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 <netinet/in.h>
47 #include <linux/ethtool.h>
48 #include <linux/sockios.h>
51 /* DPDK headers don't like -pedantic. */
53 #pragma GCC diagnostic ignored "-Wpedantic"
55 #include <rte_atomic.h>
56 #include <rte_ethdev.h>
58 #include <rte_common.h>
59 #include <rte_interrupts.h>
60 #include <rte_alarm.h>
61 #include <rte_malloc.h>
63 #pragma GCC diagnostic error "-Wpedantic"
67 #include "mlx5_rxtx.h"
68 #include "mlx5_utils.h"
71 * Return private structure associated with an Ethernet device.
74 * Pointer to Ethernet device structure.
77 * Pointer to private structure.
80 mlx5_get_priv(struct rte_eth_dev *dev)
82 struct mlx5_secondary_data *sd;
84 if (!mlx5_is_secondary())
85 return dev->data->dev_private;
86 sd = &mlx5_secondary_data[dev->data->port_id];
87 return sd->data.dev_private;
91 * Check if running as a secondary process.
94 * Nonzero if running as a secondary process.
97 mlx5_is_secondary(void)
99 return rte_eal_process_type() != RTE_PROC_PRIMARY;
103 * Get interface name from private structure.
106 * Pointer to private structure.
108 * Interface name output buffer.
111 * 0 on success, -1 on failure and errno is set.
114 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
118 unsigned int dev_type = 0;
119 unsigned int dev_port_prev = ~0u;
120 char match[IF_NAMESIZE] = "";
123 MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
129 while ((dent = readdir(dir)) != NULL) {
130 char *name = dent->d_name;
132 unsigned int dev_port;
135 if ((name[0] == '.') &&
136 ((name[1] == '\0') ||
137 ((name[1] == '.') && (name[2] == '\0'))))
140 MKSTR(path, "%s/device/net/%s/%s",
141 priv->ctx->device->ibdev_path, name,
142 (dev_type ? "dev_id" : "dev_port"));
144 file = fopen(path, "rb");
149 * Switch to dev_id when dev_port does not exist as
150 * is the case with Linux kernel versions < 3.15.
161 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
166 * Switch to dev_id when dev_port returns the same value for
167 * all ports. May happen when using a MOFED release older than
168 * 3.0 with a Linux kernel >= 3.15.
170 if (dev_port == dev_port_prev)
172 dev_port_prev = dev_port;
173 if (dev_port == (priv->port - 1u))
174 snprintf(match, sizeof(match), "%s", name);
177 if (match[0] == '\0')
179 strncpy(*ifname, match, sizeof(*ifname));
184 * Read from sysfs entry.
187 * Pointer to private structure.
189 * Entry name relative to sysfs path.
191 * Data output buffer.
196 * 0 on success, -1 on failure and errno is set.
199 priv_sysfs_read(const struct priv *priv, const char *entry,
200 char *buf, size_t size)
202 char ifname[IF_NAMESIZE];
207 if (priv_get_ifname(priv, &ifname))
210 MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
213 file = fopen(path, "rb");
216 ret = fread(buf, 1, size, file);
218 if (((size_t)ret < size) && (ferror(file)))
228 * Write to sysfs entry.
231 * Pointer to private structure.
233 * Entry name relative to sysfs path.
240 * 0 on success, -1 on failure and errno is set.
243 priv_sysfs_write(const struct priv *priv, const char *entry,
244 char *buf, size_t size)
246 char ifname[IF_NAMESIZE];
251 if (priv_get_ifname(priv, &ifname))
254 MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
257 file = fopen(path, "wb");
260 ret = fwrite(buf, 1, size, file);
262 if (((size_t)ret < size) || (ferror(file)))
272 * Get unsigned long sysfs property.
275 * Pointer to private structure.
277 * Entry name relative to sysfs path.
279 * Value output buffer.
282 * 0 on success, -1 on failure and errno is set.
285 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
288 unsigned long value_ret;
291 ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
293 DEBUG("cannot read %s value from sysfs: %s",
294 name, strerror(errno));
297 value_str[ret] = '\0';
299 value_ret = strtoul(value_str, NULL, 0);
301 DEBUG("invalid %s value `%s': %s", name, value_str,
310 * Set unsigned long sysfs property.
313 * Pointer to private structure.
315 * Entry name relative to sysfs path.
320 * 0 on success, -1 on failure and errno is set.
323 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
326 MKSTR(value_str, "%lu", value);
328 ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
330 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
331 name, value_str, value, strerror(errno));
338 * Perform ifreq ioctl() on associated Ethernet device.
341 * Pointer to private structure.
343 * Request number to pass to ioctl().
345 * Interface request structure output buffer.
348 * 0 on success, -1 on failure and errno is set.
351 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
353 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
358 if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
359 ret = ioctl(sock, req, ifr);
365 * Return the number of active VFs for the current device.
368 * Pointer to private structure.
369 * @param[out] num_vfs
370 * Number of active VFs.
373 * 0 on success, -1 on failure and errno is set.
376 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
378 /* The sysfs entry name depends on the operating system. */
379 const char **name = (const char *[]){
380 "device/sriov_numvfs",
381 "device/mlx5_num_vfs",
387 unsigned long ulong_num_vfs;
389 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
391 *num_vfs = ulong_num_vfs;
392 } while (*(++name) && ret);
400 * Pointer to private structure.
402 * MTU value output buffer.
405 * 0 on success, -1 on failure and errno is set.
408 priv_get_mtu(struct priv *priv, uint16_t *mtu)
410 unsigned long ulong_mtu;
412 if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
422 * Pointer to private structure.
427 * 0 on success, -1 on failure and errno is set.
430 priv_set_mtu(struct priv *priv, uint16_t mtu)
434 if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
435 priv_get_mtu(priv, &new_mtu))
447 * Pointer to private structure.
449 * Bitmask for flags that must remain untouched.
451 * Bitmask for flags to modify.
454 * 0 on success, -1 on failure and errno is set.
457 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
461 if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
464 tmp |= (flags & (~keep));
465 return priv_set_sysfs_ulong(priv, "flags", tmp);
469 * Ethernet device configuration.
471 * Prepare the driver for a given number of TX and RX queues.
474 * Pointer to Ethernet device structure.
477 * 0 on success, errno value on failure.
480 dev_configure(struct rte_eth_dev *dev)
482 struct priv *priv = dev->data->dev_private;
483 unsigned int rxqs_n = dev->data->nb_rx_queues;
484 unsigned int txqs_n = dev->data->nb_tx_queues;
487 unsigned int reta_idx_n;
489 priv->rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
490 priv->rxqs = (void *)dev->data->rx_queues;
491 priv->txqs = (void *)dev->data->tx_queues;
492 if (txqs_n != priv->txqs_n) {
493 INFO("%p: TX queues number update: %u -> %u",
494 (void *)dev, priv->txqs_n, txqs_n);
495 priv->txqs_n = txqs_n;
497 if (rxqs_n > priv->ind_table_max_size) {
498 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
501 if (rxqs_n == priv->rxqs_n)
503 INFO("%p: RX queues number update: %u -> %u",
504 (void *)dev, priv->rxqs_n, rxqs_n);
505 priv->rxqs_n = rxqs_n;
506 /* If the requested number of RX queues is not a power of two, use the
507 * maximum indirection table size for better balancing.
508 * The result is always rounded to the next power of two. */
509 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
510 priv->ind_table_max_size :
512 if (priv_rss_reta_index_resize(priv, reta_idx_n))
514 /* When the number of RX queues is not a power of two, the remaining
515 * table entries are padded with reused WQs and hashes are not spread
517 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
518 (*priv->reta_idx)[i] = j;
526 * DPDK callback for Ethernet device configuration.
529 * Pointer to Ethernet device structure.
532 * 0 on success, negative errno value on failure.
535 mlx5_dev_configure(struct rte_eth_dev *dev)
537 struct priv *priv = dev->data->dev_private;
540 if (mlx5_is_secondary())
541 return -E_RTE_SECONDARY;
544 ret = dev_configure(dev);
551 * DPDK callback to get information about the device.
554 * Pointer to Ethernet device structure.
556 * Info structure output buffer.
559 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
561 struct priv *priv = mlx5_get_priv(dev);
563 char ifname[IF_NAMESIZE];
566 /* FIXME: we should ask the device for these values. */
567 info->min_rx_bufsize = 32;
568 info->max_rx_pktlen = 65536;
570 * Since we need one CQ per QP, the limit is the minimum number
571 * between the two values.
573 max = ((priv->device_attr.max_cq > priv->device_attr.max_qp) ?
574 priv->device_attr.max_qp : priv->device_attr.max_cq);
575 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
578 info->max_rx_queues = max;
579 info->max_tx_queues = max;
580 info->max_mac_addrs = RTE_DIM(priv->mac);
581 info->rx_offload_capa =
583 (DEV_RX_OFFLOAD_IPV4_CKSUM |
584 DEV_RX_OFFLOAD_UDP_CKSUM |
585 DEV_RX_OFFLOAD_TCP_CKSUM) :
587 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0);
589 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
591 info->tx_offload_capa |=
592 (DEV_TX_OFFLOAD_IPV4_CKSUM |
593 DEV_TX_OFFLOAD_UDP_CKSUM |
594 DEV_TX_OFFLOAD_TCP_CKSUM);
595 if (priv_get_ifname(priv, &ifname) == 0)
596 info->if_index = if_nametoindex(ifname);
597 /* FIXME: RETA update/query API expects the callee to know the size of
598 * the indirection table, for this PMD the size varies depending on
599 * the number of RX queues, it becomes impossible to find the correct
600 * size if it is not fixed.
601 * The API should be updated to solve this problem. */
602 info->reta_size = priv->ind_table_max_size;
603 info->hash_key_size = ((*priv->rss_conf) ?
604 (*priv->rss_conf)[0]->rss_key_len :
606 info->speed_capa = priv->link_speed_capa;
611 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
613 static const uint32_t ptypes[] = {
614 /* refers to rxq_cq_to_pkt_type() */
617 RTE_PTYPE_INNER_L3_IPV4,
618 RTE_PTYPE_INNER_L3_IPV6,
623 if (dev->rx_pkt_burst == mlx5_rx_burst)
629 * DPDK callback to retrieve physical link information (unlocked version).
632 * Pointer to Ethernet device structure.
633 * @param wait_to_complete
634 * Wait for request completion (ignored).
637 mlx5_link_update_unlocked(struct rte_eth_dev *dev, int wait_to_complete)
639 struct priv *priv = mlx5_get_priv(dev);
640 struct ethtool_cmd edata = {
641 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
644 struct rte_eth_link dev_link;
647 (void)wait_to_complete;
648 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
649 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
652 memset(&dev_link, 0, sizeof(dev_link));
653 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
654 (ifr.ifr_flags & IFF_RUNNING));
655 ifr.ifr_data = (void *)&edata;
656 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
657 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
661 link_speed = ethtool_cmd_speed(&edata);
662 if (link_speed == -1)
663 dev_link.link_speed = 0;
665 dev_link.link_speed = link_speed;
666 priv->link_speed_capa = 0;
667 if (edata.supported & SUPPORTED_Autoneg)
668 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
669 if (edata.supported & (SUPPORTED_1000baseT_Full |
670 SUPPORTED_1000baseKX_Full))
671 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
672 if (edata.supported & SUPPORTED_10000baseKR_Full)
673 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
674 if (edata.supported & (SUPPORTED_40000baseKR4_Full |
675 SUPPORTED_40000baseCR4_Full |
676 SUPPORTED_40000baseSR4_Full |
677 SUPPORTED_40000baseLR4_Full))
678 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
679 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
680 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
681 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
682 ETH_LINK_SPEED_FIXED);
683 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
684 /* Link status changed. */
685 dev->data->dev_link = dev_link;
688 /* Link status is still the same. */
693 * DPDK callback to retrieve physical link information.
696 * Pointer to Ethernet device structure.
697 * @param wait_to_complete
698 * Wait for request completion (ignored).
701 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
703 struct priv *priv = mlx5_get_priv(dev);
707 ret = mlx5_link_update_unlocked(dev, wait_to_complete);
713 * DPDK callback to change the MTU.
715 * Setting the MTU affects hardware MRU (packets larger than the MTU cannot be
716 * received). Use this as a hint to enable/disable scattered packets support
717 * and improve performance when not needed.
718 * Since failure is not an option, reconfiguring queues on the fly is not
722 * Pointer to Ethernet device structure.
727 * 0 on success, negative errno value on failure.
730 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
732 struct priv *priv = dev->data->dev_private;
735 uint16_t (*rx_func)(void *, struct rte_mbuf **, uint16_t) =
737 unsigned int max_frame_len;
739 int restart = priv->started;
741 if (mlx5_is_secondary())
742 return -E_RTE_SECONDARY;
745 /* Set kernel interface MTU first. */
746 if (priv_set_mtu(priv, mtu)) {
748 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
752 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
753 /* Temporarily replace RX handler with a fake one, assuming it has not
754 * been copied elsewhere. */
755 dev->rx_pkt_burst = removed_rx_burst;
756 /* Make sure everyone has left mlx5_rx_burst() and uses
757 * removed_rx_burst() instead. */
760 /* MTU does not include header and CRC. */
761 max_frame_len = ETHER_HDR_LEN + mtu + ETHER_CRC_LEN;
762 /* Check if at least one queue is going to need a SGE update. */
763 for (i = 0; i != priv->rxqs_n; ++i) {
764 struct rxq *rxq = (*priv->rxqs)[i];
766 unsigned int size = RTE_PKTMBUF_HEADROOM + max_frame_len;
771 mb_len = rte_pktmbuf_data_room_size(rxq->mp);
772 assert(mb_len >= RTE_PKTMBUF_HEADROOM);
774 * Determine the number of SGEs needed for a full packet
775 * and round it to the next power of two.
777 sges_n = log2above((size / mb_len) + !!(size % mb_len));
778 if (sges_n != rxq->sges_n)
782 * If all queues have the right number of SGEs, a simple rehash
783 * of their buffers is enough, otherwise SGE information can only
784 * be updated in a queue by recreating it. All resources that depend
785 * on queues (flows, indirection tables) must be recreated as well in
788 rehash = (i == priv->rxqs_n);
790 /* Clean up everything as with mlx5_dev_stop(). */
791 priv_special_flow_disable_all(priv);
792 priv_mac_addrs_disable(priv);
793 priv_destroy_hash_rxqs(priv);
794 priv_fdir_disable(priv);
795 priv_dev_interrupt_handler_uninstall(priv, dev);
798 /* Reconfigure each RX queue. */
799 for (i = 0; (i != priv->rxqs_n); ++i) {
800 struct rxq *rxq = (*priv->rxqs)[i];
801 struct rxq_ctrl *rxq_ctrl =
802 container_of(rxq, struct rxq_ctrl, rxq);
809 mb_len = rte_pktmbuf_data_room_size(rxq->mp);
810 assert(mb_len >= RTE_PKTMBUF_HEADROOM);
811 /* Toggle scattered support (sp) if necessary. */
812 sp = (max_frame_len > (mb_len - RTE_PKTMBUF_HEADROOM));
813 /* Provide new values to rxq_setup(). */
814 dev->data->dev_conf.rxmode.jumbo_frame = sp;
815 dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame_len;
817 ret = rxq_rehash(dev, rxq_ctrl);
819 ret = rxq_ctrl_setup(dev, rxq_ctrl, 1 << rxq->elts_n,
820 rxq_ctrl->socket, NULL, rxq->mp);
823 /* Attempt to roll back in case of error. */
824 tmp = (mb_len << rxq->sges_n) - RTE_PKTMBUF_HEADROOM;
825 if (max_frame_len != tmp) {
829 /* Double fault, disable RX. */
833 * Use a safe RX burst function in case of error, otherwise mimic
837 ERROR("unable to reconfigure RX queues, RX disabled");
838 rx_func = removed_rx_burst;
839 } else if (restart &&
841 !priv_create_hash_rxqs(priv) &&
842 !priv_rehash_flows(priv)) {
843 if (dev->data->dev_conf.fdir_conf.mode == RTE_FDIR_MODE_NONE)
844 priv_fdir_enable(priv);
845 priv_dev_interrupt_handler_install(priv, dev);
848 /* Burst functions can now be called again. */
850 dev->rx_pkt_burst = rx_func;
858 * DPDK callback to get flow control status.
861 * Pointer to Ethernet device structure.
862 * @param[out] fc_conf
863 * Flow control output buffer.
866 * 0 on success, negative errno value on failure.
869 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
871 struct priv *priv = dev->data->dev_private;
873 struct ethtool_pauseparam ethpause = {
874 .cmd = ETHTOOL_GPAUSEPARAM
878 if (mlx5_is_secondary())
879 return -E_RTE_SECONDARY;
881 ifr.ifr_data = (void *)ðpause;
883 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
885 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
891 fc_conf->autoneg = ethpause.autoneg;
892 if (ethpause.rx_pause && ethpause.tx_pause)
893 fc_conf->mode = RTE_FC_FULL;
894 else if (ethpause.rx_pause)
895 fc_conf->mode = RTE_FC_RX_PAUSE;
896 else if (ethpause.tx_pause)
897 fc_conf->mode = RTE_FC_TX_PAUSE;
899 fc_conf->mode = RTE_FC_NONE;
909 * DPDK callback to modify flow control parameters.
912 * Pointer to Ethernet device structure.
914 * Flow control parameters.
917 * 0 on success, negative errno value on failure.
920 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
922 struct priv *priv = dev->data->dev_private;
924 struct ethtool_pauseparam ethpause = {
925 .cmd = ETHTOOL_SPAUSEPARAM
929 if (mlx5_is_secondary())
930 return -E_RTE_SECONDARY;
932 ifr.ifr_data = (void *)ðpause;
933 ethpause.autoneg = fc_conf->autoneg;
934 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
935 (fc_conf->mode & RTE_FC_RX_PAUSE))
936 ethpause.rx_pause = 1;
938 ethpause.rx_pause = 0;
940 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
941 (fc_conf->mode & RTE_FC_TX_PAUSE))
942 ethpause.tx_pause = 1;
944 ethpause.tx_pause = 0;
947 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
949 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
963 * Get PCI information from struct ibv_device.
966 * Pointer to Ethernet device structure.
967 * @param[out] pci_addr
968 * PCI bus address output buffer.
971 * 0 on success, -1 on failure and errno is set.
974 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
975 struct rte_pci_addr *pci_addr)
979 MKSTR(path, "%s/device/uevent", device->ibdev_path);
981 file = fopen(path, "rb");
984 while (fgets(line, sizeof(line), file) == line) {
985 size_t len = strlen(line);
988 /* Truncate long lines. */
989 if (len == (sizeof(line) - 1))
990 while (line[(len - 1)] != '\n') {
994 line[(len - 1)] = ret;
996 /* Extract information. */
999 "%" SCNx16 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1003 &pci_addr->function) == 4) {
1013 * Link status handler.
1016 * Pointer to private structure.
1018 * Pointer to the rte_eth_dev structure.
1021 * Nonzero if the callback process can be called immediately.
1024 priv_dev_link_status_handler(struct priv *priv, struct rte_eth_dev *dev)
1026 struct ibv_async_event event;
1027 int port_change = 0;
1030 /* Read all message and acknowledge them. */
1032 if (ibv_get_async_event(priv->ctx, &event))
1035 if (event.event_type == IBV_EVENT_PORT_ACTIVE ||
1036 event.event_type == IBV_EVENT_PORT_ERR)
1039 DEBUG("event type %d on port %d not handled",
1040 event.event_type, event.element.port_num);
1041 ibv_ack_async_event(&event);
1044 if (port_change ^ priv->pending_alarm) {
1045 struct rte_eth_link *link = &dev->data->dev_link;
1047 priv->pending_alarm = 0;
1048 mlx5_link_update_unlocked(dev, 0);
1049 if (((link->link_speed == 0) && link->link_status) ||
1050 ((link->link_speed != 0) && !link->link_status)) {
1051 /* Inconsistent status, check again later. */
1052 priv->pending_alarm = 1;
1053 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
1054 mlx5_dev_link_status_handler,
1063 * Handle delayed link status event.
1066 * Registered argument.
1069 mlx5_dev_link_status_handler(void *arg)
1071 struct rte_eth_dev *dev = arg;
1072 struct priv *priv = dev->data->dev_private;
1076 assert(priv->pending_alarm == 1);
1077 ret = priv_dev_link_status_handler(priv, dev);
1080 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1084 * Handle interrupts from the NIC.
1086 * @param[in] intr_handle
1087 * Interrupt handler.
1089 * Callback argument.
1092 mlx5_dev_interrupt_handler(struct rte_intr_handle *intr_handle, void *cb_arg)
1094 struct rte_eth_dev *dev = cb_arg;
1095 struct priv *priv = dev->data->dev_private;
1100 ret = priv_dev_link_status_handler(priv, dev);
1103 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1107 * Uninstall interrupt handler.
1110 * Pointer to private structure.
1112 * Pointer to the rte_eth_dev structure.
1115 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1117 if (!dev->data->dev_conf.intr_conf.lsc)
1119 rte_intr_callback_unregister(&priv->intr_handle,
1120 mlx5_dev_interrupt_handler,
1122 if (priv->pending_alarm)
1123 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1124 priv->pending_alarm = 0;
1125 priv->intr_handle.fd = 0;
1126 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1130 * Install interrupt handler.
1133 * Pointer to private structure.
1135 * Pointer to the rte_eth_dev structure.
1138 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1142 if (!dev->data->dev_conf.intr_conf.lsc)
1144 assert(priv->ctx->async_fd > 0);
1145 flags = fcntl(priv->ctx->async_fd, F_GETFL);
1146 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1148 INFO("failed to change file descriptor async event queue");
1149 dev->data->dev_conf.intr_conf.lsc = 0;
1151 priv->intr_handle.fd = priv->ctx->async_fd;
1152 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1153 rte_intr_callback_register(&priv->intr_handle,
1154 mlx5_dev_interrupt_handler,
1160 * Change the link state (UP / DOWN).
1163 * Pointer to Ethernet device structure.
1165 * Nonzero for link up, otherwise link down.
1168 * 0 on success, errno value on failure.
1171 priv_set_link(struct priv *priv, int up)
1173 struct rte_eth_dev *dev = priv->dev;
1177 err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
1180 priv_select_tx_function(priv);
1181 priv_select_rx_function(priv);
1183 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
1186 dev->rx_pkt_burst = removed_rx_burst;
1187 dev->tx_pkt_burst = removed_tx_burst;
1193 * DPDK callback to bring the link DOWN.
1196 * Pointer to Ethernet device structure.
1199 * 0 on success, errno value on failure.
1202 mlx5_set_link_down(struct rte_eth_dev *dev)
1204 struct priv *priv = dev->data->dev_private;
1208 err = priv_set_link(priv, 0);
1214 * DPDK callback to bring the link UP.
1217 * Pointer to Ethernet device structure.
1220 * 0 on success, errno value on failure.
1223 mlx5_set_link_up(struct rte_eth_dev *dev)
1225 struct priv *priv = dev->data->dev_private;
1229 err = priv_set_link(priv, 1);
1235 * Configure secondary process queues from a private data pointer (primary
1236 * or secondary) and update burst callbacks. Can take place only once.
1238 * All queues must have been previously created by the primary process to
1239 * avoid undefined behavior.
1242 * Private data pointer from either primary or secondary process.
1245 * Private data pointer from secondary process, NULL in case of error.
1248 mlx5_secondary_data_setup(struct priv *priv)
1250 unsigned int port_id = 0;
1251 struct mlx5_secondary_data *sd;
1254 unsigned int nb_tx_queues;
1255 unsigned int nb_rx_queues;
1258 /* priv must be valid at this point. */
1259 assert(priv != NULL);
1260 /* priv->dev must also be valid but may point to local memory from
1261 * another process, possibly with the same address and must not
1262 * be dereferenced yet. */
1263 assert(priv->dev != NULL);
1264 /* Determine port ID by finding out where priv comes from. */
1266 sd = &mlx5_secondary_data[port_id];
1267 rte_spinlock_lock(&sd->lock);
1268 /* Primary process? */
1269 if (sd->primary_priv == priv)
1271 /* Secondary process? */
1272 if (sd->data.dev_private == priv)
1274 rte_spinlock_unlock(&sd->lock);
1275 if (++port_id == RTE_DIM(mlx5_secondary_data))
1278 /* Switch to secondary private structure. If private data has already
1279 * been updated by another thread, there is nothing else to do. */
1280 priv = sd->data.dev_private;
1281 if (priv->dev->data == &sd->data)
1283 /* Sanity checks. Secondary private structure is supposed to point
1284 * to local eth_dev, itself still pointing to the shared device data
1285 * structure allocated by the primary process. */
1286 assert(sd->shared_dev_data != &sd->data);
1287 assert(sd->data.nb_tx_queues == 0);
1288 assert(sd->data.tx_queues == NULL);
1289 assert(sd->data.nb_rx_queues == 0);
1290 assert(sd->data.rx_queues == NULL);
1291 assert(priv != sd->primary_priv);
1292 assert(priv->dev->data == sd->shared_dev_data);
1293 assert(priv->txqs_n == 0);
1294 assert(priv->txqs == NULL);
1295 assert(priv->rxqs_n == 0);
1296 assert(priv->rxqs == NULL);
1297 nb_tx_queues = sd->shared_dev_data->nb_tx_queues;
1298 nb_rx_queues = sd->shared_dev_data->nb_rx_queues;
1299 /* Allocate local storage for queues. */
1300 tx_queues = rte_zmalloc("secondary ethdev->tx_queues",
1301 sizeof(sd->data.tx_queues[0]) * nb_tx_queues,
1302 RTE_CACHE_LINE_SIZE);
1303 rx_queues = rte_zmalloc("secondary ethdev->rx_queues",
1304 sizeof(sd->data.rx_queues[0]) * nb_rx_queues,
1305 RTE_CACHE_LINE_SIZE);
1306 if (tx_queues == NULL || rx_queues == NULL)
1308 /* Lock to prevent control operations during setup. */
1311 for (i = 0; i != nb_tx_queues; ++i) {
1312 struct txq *primary_txq = (*sd->primary_priv->txqs)[i];
1313 struct txq_ctrl *primary_txq_ctrl;
1314 struct txq_ctrl *txq_ctrl;
1316 if (primary_txq == NULL)
1318 primary_txq_ctrl = container_of(primary_txq,
1319 struct txq_ctrl, txq);
1320 txq_ctrl = rte_calloc_socket("TXQ", 1, sizeof(*txq_ctrl) +
1321 (1 << primary_txq->elts_n) *
1322 sizeof(struct rte_mbuf *), 0,
1323 primary_txq_ctrl->socket);
1324 if (txq_ctrl != NULL) {
1325 if (txq_ctrl_setup(priv->dev,
1327 1 << primary_txq->elts_n,
1328 primary_txq_ctrl->socket,
1330 txq_ctrl->txq.stats.idx =
1331 primary_txq->stats.idx;
1332 tx_queues[i] = &txq_ctrl->txq;
1338 txq_ctrl = tx_queues[--i];
1339 txq_cleanup(txq_ctrl);
1345 for (i = 0; i != nb_rx_queues; ++i) {
1346 struct rxq_ctrl *primary_rxq =
1347 container_of((*sd->primary_priv->rxqs)[i],
1348 struct rxq_ctrl, rxq);
1350 if (primary_rxq == NULL)
1352 /* Not supported yet. */
1353 rx_queues[i] = NULL;
1355 /* Update everything. */
1356 priv->txqs = (void *)tx_queues;
1357 priv->txqs_n = nb_tx_queues;
1358 priv->rxqs = (void *)rx_queues;
1359 priv->rxqs_n = nb_rx_queues;
1360 sd->data.rx_queues = rx_queues;
1361 sd->data.tx_queues = tx_queues;
1362 sd->data.nb_rx_queues = nb_rx_queues;
1363 sd->data.nb_tx_queues = nb_tx_queues;
1364 sd->data.dev_link = sd->shared_dev_data->dev_link;
1365 sd->data.mtu = sd->shared_dev_data->mtu;
1366 memcpy(sd->data.rx_queue_state, sd->shared_dev_data->rx_queue_state,
1367 sizeof(sd->data.rx_queue_state));
1368 memcpy(sd->data.tx_queue_state, sd->shared_dev_data->tx_queue_state,
1369 sizeof(sd->data.tx_queue_state));
1370 sd->data.dev_flags = sd->shared_dev_data->dev_flags;
1371 /* Use local data from now on. */
1373 priv->dev->data = &sd->data;
1375 priv_select_tx_function(priv);
1376 priv_select_rx_function(priv);
1379 /* More sanity checks. */
1380 assert(priv->dev->data == &sd->data);
1381 rte_spinlock_unlock(&sd->lock);
1385 rte_free(tx_queues);
1386 rte_free(rx_queues);
1387 rte_spinlock_unlock(&sd->lock);
1392 * Configure the TX function to use.
1395 * Pointer to private structure.
1398 priv_select_tx_function(struct priv *priv)
1400 priv->dev->tx_pkt_burst = mlx5_tx_burst;
1401 /* Display warning for unsupported configurations. */
1402 if (priv->sriov && priv->mps)
1403 WARN("multi-packet send WQE cannot be used on a SR-IOV setup");
1404 /* Select appropriate TX function. */
1405 if ((priv->sriov == 0) && priv->mps && priv->txq_inline) {
1406 priv->dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1407 DEBUG("selected MPW inline TX function");
1408 } else if ((priv->sriov == 0) && priv->mps) {
1409 priv->dev->tx_pkt_burst = mlx5_tx_burst_mpw;
1410 DEBUG("selected MPW TX function");
1415 * Configure the RX function to use.
1418 * Pointer to private structure.
1421 priv_select_rx_function(struct priv *priv)
1423 priv->dev->rx_pkt_burst = mlx5_rx_burst;