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 "-pedantic"
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 "-pedantic"
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)
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 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
589 info->tx_offload_capa |=
590 (DEV_TX_OFFLOAD_IPV4_CKSUM |
591 DEV_TX_OFFLOAD_UDP_CKSUM |
592 DEV_TX_OFFLOAD_TCP_CKSUM);
593 if (priv_get_ifname(priv, &ifname) == 0)
594 info->if_index = if_nametoindex(ifname);
595 /* FIXME: RETA update/query API expects the callee to know the size of
596 * the indirection table, for this PMD the size varies depending on
597 * the number of RX queues, it becomes impossible to find the correct
598 * size if it is not fixed.
599 * The API should be updated to solve this problem. */
600 info->reta_size = priv->ind_table_max_size;
614 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
616 static const uint32_t ptypes[] = {
617 /* refers to rxq_cq_to_pkt_type() */
620 RTE_PTYPE_INNER_L3_IPV4,
621 RTE_PTYPE_INNER_L3_IPV6,
626 if (dev->rx_pkt_burst == mlx5_rx_burst)
632 * DPDK callback to retrieve physical link information (unlocked version).
635 * Pointer to Ethernet device structure.
636 * @param wait_to_complete
637 * Wait for request completion (ignored).
640 mlx5_link_update_unlocked(struct rte_eth_dev *dev, int wait_to_complete)
642 struct priv *priv = mlx5_get_priv(dev);
643 struct ethtool_cmd edata = {
647 struct rte_eth_link dev_link;
650 (void)wait_to_complete;
651 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
652 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
655 memset(&dev_link, 0, sizeof(dev_link));
656 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
657 (ifr.ifr_flags & IFF_RUNNING));
658 ifr.ifr_data = (void *)&edata;
659 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
660 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
664 link_speed = ethtool_cmd_speed(&edata);
665 if (link_speed == -1)
666 dev_link.link_speed = 0;
668 dev_link.link_speed = link_speed;
669 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
670 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
671 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
672 ETH_LINK_SPEED_FIXED);
673 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
674 /* Link status changed. */
675 dev->data->dev_link = dev_link;
678 /* Link status is still the same. */
683 * DPDK callback to retrieve physical link information.
686 * Pointer to Ethernet device structure.
687 * @param wait_to_complete
688 * Wait for request completion (ignored).
691 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
693 struct priv *priv = mlx5_get_priv(dev);
697 ret = mlx5_link_update_unlocked(dev, wait_to_complete);
703 * DPDK callback to change the MTU.
705 * Setting the MTU affects hardware MRU (packets larger than the MTU cannot be
706 * received). Use this as a hint to enable/disable scattered packets support
707 * and improve performance when not needed.
708 * Since failure is not an option, reconfiguring queues on the fly is not
712 * Pointer to Ethernet device structure.
717 * 0 on success, negative errno value on failure.
720 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
722 struct priv *priv = dev->data->dev_private;
725 uint16_t (*rx_func)(void *, struct rte_mbuf **, uint16_t) =
728 if (mlx5_is_secondary())
729 return -E_RTE_SECONDARY;
732 /* Set kernel interface MTU first. */
733 if (priv_set_mtu(priv, mtu)) {
735 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
739 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
741 /* Temporarily replace RX handler with a fake one, assuming it has not
742 * been copied elsewhere. */
743 dev->rx_pkt_burst = removed_rx_burst;
744 /* Make sure everyone has left mlx5_rx_burst() and uses
745 * removed_rx_burst() instead. */
748 /* Reconfigure each RX queue. */
749 for (i = 0; (i != priv->rxqs_n); ++i) {
750 struct rxq *rxq = (*priv->rxqs)[i];
752 unsigned int max_frame_len;
757 /* Calculate new maximum frame length according to MTU and
758 * toggle scattered support (sp) if necessary. */
759 max_frame_len = (priv->mtu + ETHER_HDR_LEN +
760 (ETHER_MAX_VLAN_FRAME_LEN - ETHER_MAX_LEN));
761 mb_len = rte_pktmbuf_data_room_size(rxq->mp);
762 assert(mb_len >= RTE_PKTMBUF_HEADROOM);
763 sp = (max_frame_len > (mb_len - RTE_PKTMBUF_HEADROOM));
765 ERROR("%p: RX scatter is not supported", (void *)dev);
770 /* Burst functions can now be called again. */
772 dev->rx_pkt_burst = rx_func;
780 * DPDK callback to get flow control status.
783 * Pointer to Ethernet device structure.
784 * @param[out] fc_conf
785 * Flow control output buffer.
788 * 0 on success, negative errno value on failure.
791 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
793 struct priv *priv = dev->data->dev_private;
795 struct ethtool_pauseparam ethpause = {
796 .cmd = ETHTOOL_GPAUSEPARAM
800 if (mlx5_is_secondary())
801 return -E_RTE_SECONDARY;
803 ifr.ifr_data = (void *)ðpause;
805 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
807 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
813 fc_conf->autoneg = ethpause.autoneg;
814 if (ethpause.rx_pause && ethpause.tx_pause)
815 fc_conf->mode = RTE_FC_FULL;
816 else if (ethpause.rx_pause)
817 fc_conf->mode = RTE_FC_RX_PAUSE;
818 else if (ethpause.tx_pause)
819 fc_conf->mode = RTE_FC_TX_PAUSE;
821 fc_conf->mode = RTE_FC_NONE;
831 * DPDK callback to modify flow control parameters.
834 * Pointer to Ethernet device structure.
836 * Flow control parameters.
839 * 0 on success, negative errno value on failure.
842 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
844 struct priv *priv = dev->data->dev_private;
846 struct ethtool_pauseparam ethpause = {
847 .cmd = ETHTOOL_SPAUSEPARAM
851 if (mlx5_is_secondary())
852 return -E_RTE_SECONDARY;
854 ifr.ifr_data = (void *)ðpause;
855 ethpause.autoneg = fc_conf->autoneg;
856 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
857 (fc_conf->mode & RTE_FC_RX_PAUSE))
858 ethpause.rx_pause = 1;
860 ethpause.rx_pause = 0;
862 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
863 (fc_conf->mode & RTE_FC_TX_PAUSE))
864 ethpause.tx_pause = 1;
866 ethpause.tx_pause = 0;
869 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
871 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
885 * Get PCI information from struct ibv_device.
888 * Pointer to Ethernet device structure.
889 * @param[out] pci_addr
890 * PCI bus address output buffer.
893 * 0 on success, -1 on failure and errno is set.
896 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
897 struct rte_pci_addr *pci_addr)
901 MKSTR(path, "%s/device/uevent", device->ibdev_path);
903 file = fopen(path, "rb");
906 while (fgets(line, sizeof(line), file) == line) {
907 size_t len = strlen(line);
910 /* Truncate long lines. */
911 if (len == (sizeof(line) - 1))
912 while (line[(len - 1)] != '\n') {
916 line[(len - 1)] = ret;
918 /* Extract information. */
921 "%" SCNx16 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
925 &pci_addr->function) == 4) {
935 * Link status handler.
938 * Pointer to private structure.
940 * Pointer to the rte_eth_dev structure.
943 * Nonzero if the callback process can be called immediately.
946 priv_dev_link_status_handler(struct priv *priv, struct rte_eth_dev *dev)
948 struct ibv_async_event event;
952 /* Read all message and acknowledge them. */
954 if (ibv_get_async_event(priv->ctx, &event))
957 if (event.event_type == IBV_EVENT_PORT_ACTIVE ||
958 event.event_type == IBV_EVENT_PORT_ERR)
961 DEBUG("event type %d on port %d not handled",
962 event.event_type, event.element.port_num);
963 ibv_ack_async_event(&event);
966 if (port_change ^ priv->pending_alarm) {
967 struct rte_eth_link *link = &dev->data->dev_link;
969 priv->pending_alarm = 0;
970 mlx5_link_update_unlocked(dev, 0);
971 if (((link->link_speed == 0) && link->link_status) ||
972 ((link->link_speed != 0) && !link->link_status)) {
973 /* Inconsistent status, check again later. */
974 priv->pending_alarm = 1;
975 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
976 mlx5_dev_link_status_handler,
985 * Handle delayed link status event.
988 * Registered argument.
991 mlx5_dev_link_status_handler(void *arg)
993 struct rte_eth_dev *dev = arg;
994 struct priv *priv = dev->data->dev_private;
998 assert(priv->pending_alarm == 1);
999 ret = priv_dev_link_status_handler(priv, dev);
1002 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC);
1006 * Handle interrupts from the NIC.
1008 * @param[in] intr_handle
1009 * Interrupt handler.
1011 * Callback argument.
1014 mlx5_dev_interrupt_handler(struct rte_intr_handle *intr_handle, void *cb_arg)
1016 struct rte_eth_dev *dev = cb_arg;
1017 struct priv *priv = dev->data->dev_private;
1022 ret = priv_dev_link_status_handler(priv, dev);
1025 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC);
1029 * Uninstall interrupt handler.
1032 * Pointer to private structure.
1034 * Pointer to the rte_eth_dev structure.
1037 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1039 if (!dev->data->dev_conf.intr_conf.lsc)
1041 rte_intr_callback_unregister(&priv->intr_handle,
1042 mlx5_dev_interrupt_handler,
1044 if (priv->pending_alarm)
1045 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1046 priv->pending_alarm = 0;
1047 priv->intr_handle.fd = 0;
1048 priv->intr_handle.type = 0;
1052 * Install interrupt handler.
1055 * Pointer to private structure.
1057 * Pointer to the rte_eth_dev structure.
1060 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1064 if (!dev->data->dev_conf.intr_conf.lsc)
1066 assert(priv->ctx->async_fd > 0);
1067 flags = fcntl(priv->ctx->async_fd, F_GETFL);
1068 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1070 INFO("failed to change file descriptor async event queue");
1071 dev->data->dev_conf.intr_conf.lsc = 0;
1073 priv->intr_handle.fd = priv->ctx->async_fd;
1074 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1075 rte_intr_callback_register(&priv->intr_handle,
1076 mlx5_dev_interrupt_handler,
1082 * Change the link state (UP / DOWN).
1085 * Pointer to Ethernet device structure.
1087 * Nonzero for link up, otherwise link down.
1090 * 0 on success, errno value on failure.
1093 priv_set_link(struct priv *priv, int up)
1095 struct rte_eth_dev *dev = priv->dev;
1099 err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
1102 priv_select_tx_function(priv);
1103 priv_select_rx_function(priv);
1105 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
1108 dev->rx_pkt_burst = removed_rx_burst;
1109 dev->tx_pkt_burst = removed_tx_burst;
1115 * DPDK callback to bring the link DOWN.
1118 * Pointer to Ethernet device structure.
1121 * 0 on success, errno value on failure.
1124 mlx5_set_link_down(struct rte_eth_dev *dev)
1126 struct priv *priv = dev->data->dev_private;
1130 err = priv_set_link(priv, 0);
1136 * DPDK callback to bring the link UP.
1139 * Pointer to Ethernet device structure.
1142 * 0 on success, errno value on failure.
1145 mlx5_set_link_up(struct rte_eth_dev *dev)
1147 struct priv *priv = dev->data->dev_private;
1151 err = priv_set_link(priv, 1);
1157 * Configure secondary process queues from a private data pointer (primary
1158 * or secondary) and update burst callbacks. Can take place only once.
1160 * All queues must have been previously created by the primary process to
1161 * avoid undefined behavior.
1164 * Private data pointer from either primary or secondary process.
1167 * Private data pointer from secondary process, NULL in case of error.
1170 mlx5_secondary_data_setup(struct priv *priv)
1172 unsigned int port_id = 0;
1173 struct mlx5_secondary_data *sd;
1176 unsigned int nb_tx_queues;
1177 unsigned int nb_rx_queues;
1180 /* priv must be valid at this point. */
1181 assert(priv != NULL);
1182 /* priv->dev must also be valid but may point to local memory from
1183 * another process, possibly with the same address and must not
1184 * be dereferenced yet. */
1185 assert(priv->dev != NULL);
1186 /* Determine port ID by finding out where priv comes from. */
1188 sd = &mlx5_secondary_data[port_id];
1189 rte_spinlock_lock(&sd->lock);
1190 /* Primary process? */
1191 if (sd->primary_priv == priv)
1193 /* Secondary process? */
1194 if (sd->data.dev_private == priv)
1196 rte_spinlock_unlock(&sd->lock);
1197 if (++port_id == RTE_DIM(mlx5_secondary_data))
1200 /* Switch to secondary private structure. If private data has already
1201 * been updated by another thread, there is nothing else to do. */
1202 priv = sd->data.dev_private;
1203 if (priv->dev->data == &sd->data)
1205 /* Sanity checks. Secondary private structure is supposed to point
1206 * to local eth_dev, itself still pointing to the shared device data
1207 * structure allocated by the primary process. */
1208 assert(sd->shared_dev_data != &sd->data);
1209 assert(sd->data.nb_tx_queues == 0);
1210 assert(sd->data.tx_queues == NULL);
1211 assert(sd->data.nb_rx_queues == 0);
1212 assert(sd->data.rx_queues == NULL);
1213 assert(priv != sd->primary_priv);
1214 assert(priv->dev->data == sd->shared_dev_data);
1215 assert(priv->txqs_n == 0);
1216 assert(priv->txqs == NULL);
1217 assert(priv->rxqs_n == 0);
1218 assert(priv->rxqs == NULL);
1219 nb_tx_queues = sd->shared_dev_data->nb_tx_queues;
1220 nb_rx_queues = sd->shared_dev_data->nb_rx_queues;
1221 /* Allocate local storage for queues. */
1222 tx_queues = rte_zmalloc("secondary ethdev->tx_queues",
1223 sizeof(sd->data.tx_queues[0]) * nb_tx_queues,
1224 RTE_CACHE_LINE_SIZE);
1225 rx_queues = rte_zmalloc("secondary ethdev->rx_queues",
1226 sizeof(sd->data.rx_queues[0]) * nb_rx_queues,
1227 RTE_CACHE_LINE_SIZE);
1228 if (tx_queues == NULL || rx_queues == NULL)
1230 /* Lock to prevent control operations during setup. */
1233 for (i = 0; i != nb_tx_queues; ++i) {
1234 struct txq *primary_txq = (*sd->primary_priv->txqs)[i];
1235 struct txq_ctrl *primary_txq_ctrl;
1236 struct txq_ctrl *txq_ctrl;
1238 if (primary_txq == NULL)
1240 primary_txq_ctrl = container_of(primary_txq,
1241 struct txq_ctrl, txq);
1242 txq_ctrl = rte_calloc_socket("TXQ", 1, sizeof(*txq_ctrl), 0,
1243 primary_txq_ctrl->socket);
1244 if (txq_ctrl != NULL) {
1245 if (txq_setup(priv->dev,
1247 primary_txq->elts_n,
1248 primary_txq_ctrl->socket,
1250 txq_ctrl->txq.stats.idx =
1251 primary_txq->stats.idx;
1252 tx_queues[i] = &txq_ctrl->txq;
1258 txq_ctrl = tx_queues[--i];
1259 txq_cleanup(txq_ctrl);
1265 for (i = 0; i != nb_rx_queues; ++i) {
1266 struct rxq *primary_rxq = (*sd->primary_priv->rxqs)[i];
1268 if (primary_rxq == NULL)
1270 /* Not supported yet. */
1271 rx_queues[i] = NULL;
1273 /* Update everything. */
1274 priv->txqs = (void *)tx_queues;
1275 priv->txqs_n = nb_tx_queues;
1276 priv->rxqs = (void *)rx_queues;
1277 priv->rxqs_n = nb_rx_queues;
1278 sd->data.rx_queues = rx_queues;
1279 sd->data.tx_queues = tx_queues;
1280 sd->data.nb_rx_queues = nb_rx_queues;
1281 sd->data.nb_tx_queues = nb_tx_queues;
1282 sd->data.dev_link = sd->shared_dev_data->dev_link;
1283 sd->data.mtu = sd->shared_dev_data->mtu;
1284 memcpy(sd->data.rx_queue_state, sd->shared_dev_data->rx_queue_state,
1285 sizeof(sd->data.rx_queue_state));
1286 memcpy(sd->data.tx_queue_state, sd->shared_dev_data->tx_queue_state,
1287 sizeof(sd->data.tx_queue_state));
1288 sd->data.dev_flags = sd->shared_dev_data->dev_flags;
1289 /* Use local data from now on. */
1291 priv->dev->data = &sd->data;
1293 priv_select_tx_function(priv);
1294 priv_select_rx_function(priv);
1297 /* More sanity checks. */
1298 assert(priv->dev->data == &sd->data);
1299 rte_spinlock_unlock(&sd->lock);
1303 rte_free(tx_queues);
1304 rte_free(rx_queues);
1305 rte_spinlock_unlock(&sd->lock);
1310 * Configure the TX function to use.
1313 * Pointer to private structure.
1316 priv_select_tx_function(struct priv *priv)
1318 priv->dev->tx_pkt_burst = mlx5_tx_burst;
1322 * Configure the RX function to use.
1325 * Pointer to private structure.
1328 priv_select_rx_function(struct priv *priv)
1330 priv->dev->rx_pkt_burst = mlx5_rx_burst;