1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox.
19 #include <sys/ioctl.h>
20 #include <sys/socket.h>
21 #include <sys/utsname.h>
22 #include <netinet/in.h>
23 #include <linux/ethtool.h>
24 #include <linux/sockios.h>
25 #include <linux/version.h>
30 #include <rte_atomic.h>
31 #include <rte_ethdev_driver.h>
32 #include <rte_bus_pci.h>
34 #include <rte_common.h>
35 #include <rte_interrupts.h>
36 #include <rte_alarm.h>
37 #include <rte_malloc.h>
40 #include "mlx5_glue.h"
41 #include "mlx5_rxtx.h"
42 #include "mlx5_utils.h"
44 /* Add defines in case the running kernel is not the same as user headers. */
45 #ifndef ETHTOOL_GLINKSETTINGS
46 struct ethtool_link_settings {
55 uint8_t eth_tp_mdix_ctrl;
56 int8_t link_mode_masks_nwords;
58 uint32_t link_mode_masks[];
61 #define ETHTOOL_GLINKSETTINGS 0x0000004c
62 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
63 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
64 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
65 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
66 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
67 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
68 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
69 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
70 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
71 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
72 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
73 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
74 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
75 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
76 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
77 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
79 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
80 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
81 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
82 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
84 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
85 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
86 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
88 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
89 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
90 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
91 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
92 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
96 * Get interface name from private structure.
99 * Pointer to Ethernet device.
101 * Interface name output buffer.
104 * 0 on success, a negative errno value otherwise and rte_errno is set.
107 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
109 struct priv *priv = dev->data->dev_private;
112 unsigned int dev_type = 0;
113 unsigned int dev_port_prev = ~0u;
114 char match[IF_NAMESIZE] = "";
117 MKSTR(path, "%s/device/net", priv->ibdev_path);
125 while ((dent = readdir(dir)) != NULL) {
126 char *name = dent->d_name;
128 unsigned int dev_port;
131 if ((name[0] == '.') &&
132 ((name[1] == '\0') ||
133 ((name[1] == '.') && (name[2] == '\0'))))
136 MKSTR(path, "%s/device/net/%s/%s",
137 priv->ibdev_path, name,
138 (dev_type ? "dev_id" : "dev_port"));
140 file = fopen(path, "rb");
145 * Switch to dev_id when dev_port does not exist as
146 * is the case with Linux kernel versions < 3.15.
157 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
162 * Switch to dev_id when dev_port returns the same value for
163 * all ports. May happen when using a MOFED release older than
164 * 3.0 with a Linux kernel >= 3.15.
166 if (dev_port == dev_port_prev)
168 dev_port_prev = dev_port;
169 if (dev_port == (priv->port - 1u))
170 snprintf(match, sizeof(match), "%s", name);
173 if (match[0] == '\0') {
177 strncpy(*ifname, match, sizeof(*ifname));
182 * Perform ifreq ioctl() on associated Ethernet device.
185 * Pointer to Ethernet device.
187 * Request number to pass to ioctl().
189 * Interface request structure output buffer.
192 * 0 on success, a negative errno value otherwise and rte_errno is set.
195 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
197 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
204 ret = mlx5_get_ifname(dev, &ifr->ifr_name);
207 ret = ioctl(sock, req, ifr);
223 * Pointer to Ethernet device.
225 * MTU value output buffer.
228 * 0 on success, a negative errno value otherwise and rte_errno is set.
231 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
233 struct ifreq request;
234 int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
238 *mtu = request.ifr_mtu;
246 * Pointer to Ethernet device.
251 * 0 on success, a negative errno value otherwise and rte_errno is set.
254 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
256 struct ifreq request = { .ifr_mtu = mtu, };
258 return mlx5_ifreq(dev, SIOCSIFMTU, &request);
265 * Pointer to Ethernet device.
267 * Bitmask for flags that must remain untouched.
269 * Bitmask for flags to modify.
272 * 0 on success, a negative errno value otherwise and rte_errno is set.
275 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
277 struct ifreq request;
278 int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
282 request.ifr_flags &= keep;
283 request.ifr_flags |= flags & ~keep;
284 return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
288 * DPDK callback for Ethernet device configuration.
291 * Pointer to Ethernet device structure.
294 * 0 on success, a negative errno value otherwise and rte_errno is set.
297 mlx5_dev_configure(struct rte_eth_dev *dev)
299 struct priv *priv = dev->data->dev_private;
300 unsigned int rxqs_n = dev->data->nb_rx_queues;
301 unsigned int txqs_n = dev->data->nb_tx_queues;
304 unsigned int reta_idx_n;
305 const uint8_t use_app_rss_key =
306 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
307 uint64_t supp_tx_offloads = mlx5_get_tx_port_offloads(dev);
308 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
309 uint64_t supp_rx_offloads =
310 (mlx5_get_rx_port_offloads() |
311 mlx5_get_rx_queue_offloads(dev));
312 uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
315 if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
316 ERROR("port %u some Tx offloads are not supported "
317 "requested 0x%" PRIx64 " supported 0x%" PRIx64,
318 dev->data->port_id, tx_offloads, supp_tx_offloads);
322 if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
323 ERROR("port %u some Rx offloads are not supported "
324 "requested 0x%" PRIx64 " supported 0x%" PRIx64,
325 dev->data->port_id, rx_offloads, supp_rx_offloads);
329 if (use_app_rss_key &&
330 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
331 rss_hash_default_key_len)) {
332 /* MLX5 RSS only support 40bytes key. */
336 priv->rss_conf.rss_key =
337 rte_realloc(priv->rss_conf.rss_key,
338 rss_hash_default_key_len, 0);
339 if (!priv->rss_conf.rss_key) {
340 ERROR("port %u cannot allocate RSS hash key memory (%u)",
341 dev->data->port_id, rxqs_n);
345 memcpy(priv->rss_conf.rss_key,
347 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
348 rss_hash_default_key,
349 rss_hash_default_key_len);
350 priv->rss_conf.rss_key_len = rss_hash_default_key_len;
351 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
352 priv->rxqs = (void *)dev->data->rx_queues;
353 priv->txqs = (void *)dev->data->tx_queues;
354 if (txqs_n != priv->txqs_n) {
355 INFO("port %u Tx queues number update: %u -> %u",
356 dev->data->port_id, priv->txqs_n, txqs_n);
357 priv->txqs_n = txqs_n;
359 if (rxqs_n > priv->config.ind_table_max_size) {
360 ERROR("port %u cannot handle this many Rx queues (%u)",
361 dev->data->port_id, rxqs_n);
365 if (rxqs_n == priv->rxqs_n)
367 INFO("port %u Rx queues number update: %u -> %u",
368 dev->data->port_id, priv->rxqs_n, rxqs_n);
369 priv->rxqs_n = rxqs_n;
370 /* If the requested number of RX queues is not a power of two, use the
371 * maximum indirection table size for better balancing.
372 * The result is always rounded to the next power of two. */
373 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
374 priv->config.ind_table_max_size :
376 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
379 /* When the number of RX queues is not a power of two, the remaining
380 * table entries are padded with reused WQs and hashes are not spread
382 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
383 (*priv->reta_idx)[i] = j;
391 * DPDK callback to get information about the device.
394 * Pointer to Ethernet device structure.
396 * Info structure output buffer.
399 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
401 struct priv *priv = dev->data->dev_private;
402 struct mlx5_dev_config *config = &priv->config;
404 char ifname[IF_NAMESIZE];
406 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
407 /* FIXME: we should ask the device for these values. */
408 info->min_rx_bufsize = 32;
409 info->max_rx_pktlen = 65536;
411 * Since we need one CQ per QP, the limit is the minimum number
412 * between the two values.
414 max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
415 priv->device_attr.orig_attr.max_qp);
416 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
419 info->max_rx_queues = max;
420 info->max_tx_queues = max;
421 info->max_mac_addrs = RTE_DIM(priv->mac);
422 info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
423 info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
424 info->rx_queue_offload_capa);
425 info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
426 if (mlx5_get_ifname(dev, &ifname) == 0)
427 info->if_index = if_nametoindex(ifname);
428 info->reta_size = priv->reta_idx_n ?
429 priv->reta_idx_n : config->ind_table_max_size;
430 info->hash_key_size = priv->rss_conf.rss_key_len;
431 info->speed_capa = priv->link_speed_capa;
432 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
436 * Get supported packet types.
439 * Pointer to Ethernet device structure.
442 * A pointer to the supported Packet types array.
445 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
447 static const uint32_t ptypes[] = {
448 /* refers to rxq_cq_to_pkt_type() */
450 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
451 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
452 RTE_PTYPE_L4_NONFRAG,
456 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
457 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
458 RTE_PTYPE_INNER_L4_NONFRAG,
459 RTE_PTYPE_INNER_L4_FRAG,
460 RTE_PTYPE_INNER_L4_TCP,
461 RTE_PTYPE_INNER_L4_UDP,
465 if (dev->rx_pkt_burst == mlx5_rx_burst ||
466 dev->rx_pkt_burst == mlx5_rx_burst_vec)
472 * DPDK callback to retrieve physical link information.
475 * Pointer to Ethernet device structure.
478 * 0 on success, a negative errno value otherwise and rte_errno is set.
481 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev)
483 struct priv *priv = dev->data->dev_private;
484 struct ethtool_cmd edata = {
485 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
488 struct rte_eth_link dev_link;
492 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
494 WARN("port %u ioctl(SIOCGIFFLAGS) failed: %s",
495 dev->data->port_id, strerror(rte_errno));
498 memset(&dev_link, 0, sizeof(dev_link));
499 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
500 (ifr.ifr_flags & IFF_RUNNING));
501 ifr.ifr_data = (void *)&edata;
502 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
504 WARN("port %u ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
505 dev->data->port_id, strerror(rte_errno));
508 link_speed = ethtool_cmd_speed(&edata);
509 if (link_speed == -1)
510 dev_link.link_speed = 0;
512 dev_link.link_speed = link_speed;
513 priv->link_speed_capa = 0;
514 if (edata.supported & SUPPORTED_Autoneg)
515 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
516 if (edata.supported & (SUPPORTED_1000baseT_Full |
517 SUPPORTED_1000baseKX_Full))
518 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
519 if (edata.supported & SUPPORTED_10000baseKR_Full)
520 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
521 if (edata.supported & (SUPPORTED_40000baseKR4_Full |
522 SUPPORTED_40000baseCR4_Full |
523 SUPPORTED_40000baseSR4_Full |
524 SUPPORTED_40000baseLR4_Full))
525 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
526 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
527 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
528 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
529 ETH_LINK_SPEED_FIXED);
530 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
531 /* Link status changed. */
532 dev->data->dev_link = dev_link;
535 /* Link status is still the same. */
541 * Retrieve physical link information (unlocked version using new ioctl).
544 * Pointer to Ethernet device structure.
547 * 0 on success, a negative errno value otherwise and rte_errno is set.
550 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev)
552 struct priv *priv = dev->data->dev_private;
553 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
555 struct rte_eth_link dev_link;
559 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
561 WARN("port %u ioctl(SIOCGIFFLAGS) failed: %s",
562 dev->data->port_id, strerror(rte_errno));
565 memset(&dev_link, 0, sizeof(dev_link));
566 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
567 (ifr.ifr_flags & IFF_RUNNING));
568 ifr.ifr_data = (void *)&gcmd;
569 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
571 DEBUG("port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
572 " failed: %s", dev->data->port_id, strerror(rte_errno));
575 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
577 alignas(struct ethtool_link_settings)
578 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
579 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
580 struct ethtool_link_settings *ecmd = (void *)data;
583 ifr.ifr_data = (void *)ecmd;
584 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
586 DEBUG("port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
587 " failed: %s", dev->data->port_id, strerror(rte_errno));
590 dev_link.link_speed = ecmd->speed;
591 sc = ecmd->link_mode_masks[0] |
592 ((uint64_t)ecmd->link_mode_masks[1] << 32);
593 priv->link_speed_capa = 0;
594 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
595 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
596 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
597 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
598 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
599 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
600 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
601 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
602 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
603 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
604 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
605 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
606 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
607 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
608 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
609 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
610 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
611 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
612 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
613 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
614 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
615 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
616 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
617 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
618 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
619 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
620 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
621 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
622 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
623 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
624 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
625 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
626 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
627 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
628 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
629 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
630 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
631 ETH_LINK_SPEED_FIXED);
632 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
633 /* Link status changed. */
634 dev->data->dev_link = dev_link;
637 /* Link status is still the same. */
643 * Enable receiving and transmitting traffic.
646 * Pointer to Ethernet device.
649 mlx5_link_start(struct rte_eth_dev *dev)
651 struct priv *priv = dev->data->dev_private;
654 dev->tx_pkt_burst = mlx5_select_tx_function(dev);
655 dev->rx_pkt_burst = mlx5_select_rx_function(dev);
656 ret = mlx5_traffic_enable(dev);
658 ERROR("port %u error occurred while configuring control flows:"
659 " %s", dev->data->port_id, strerror(rte_errno));
662 ret = mlx5_flow_start(dev, &priv->flows);
664 ERROR("port %u error occurred while configuring flows: %s",
665 dev->data->port_id, strerror(rte_errno));
669 * Disable receiving and transmitting traffic.
672 * Pointer to Ethernet device.
675 mlx5_link_stop(struct rte_eth_dev *dev)
677 struct priv *priv = dev->data->dev_private;
679 mlx5_flow_stop(dev, &priv->flows);
680 mlx5_traffic_disable(dev);
681 dev->rx_pkt_burst = removed_rx_burst;
682 dev->tx_pkt_burst = removed_tx_burst;
686 * Querying the link status till it changes to the desired state.
687 * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS.
690 * Pointer to Ethernet device.
692 * Link desired status.
695 * 0 on success, a negative errno value otherwise and rte_errno is set.
698 mlx5_force_link_status_change(struct rte_eth_dev *dev, int status)
702 while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) {
703 mlx5_link_update(dev, 0);
704 if (dev->data->dev_link.link_status == status)
714 * DPDK callback to retrieve physical link information.
717 * Pointer to Ethernet device structure.
718 * @param wait_to_complete
719 * Wait for request completion (ignored).
722 * 0 on success, a negative errno value otherwise and rte_errno is set.
725 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
727 struct utsname utsname;
730 struct rte_eth_link dev_link = dev->data->dev_link;
732 if (uname(&utsname) == -1 ||
733 sscanf(utsname.release, "%d.%d.%d",
734 &ver[0], &ver[1], &ver[2]) != 3 ||
735 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
736 ret = mlx5_link_update_unlocked_gset(dev);
738 ret = mlx5_link_update_unlocked_gs(dev);
741 /* If lsc interrupt is disabled, should always be ready for traffic. */
742 if (!dev->data->dev_conf.intr_conf.lsc) {
743 mlx5_link_start(dev);
746 /* Re-select burst callbacks only if link status has been changed. */
747 if (!ret && dev_link.link_status != dev->data->dev_link.link_status) {
748 if (dev->data->dev_link.link_status == ETH_LINK_UP)
749 mlx5_link_start(dev);
757 * DPDK callback to change the MTU.
760 * Pointer to Ethernet device structure.
765 * 0 on success, a negative errno value otherwise and rte_errno is set.
768 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
770 struct priv *priv = dev->data->dev_private;
771 uint16_t kern_mtu = 0;
774 ret = mlx5_get_mtu(dev, &kern_mtu);
777 /* Set kernel interface MTU first. */
778 ret = mlx5_set_mtu(dev, mtu);
781 ret = mlx5_get_mtu(dev, &kern_mtu);
784 if (kern_mtu == mtu) {
786 DEBUG("port %u adapter MTU set to %u", dev->data->port_id, mtu);
794 * DPDK callback to get flow control status.
797 * Pointer to Ethernet device structure.
798 * @param[out] fc_conf
799 * Flow control output buffer.
802 * 0 on success, a negative errno value otherwise and rte_errno is set.
805 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
808 struct ethtool_pauseparam ethpause = {
809 .cmd = ETHTOOL_GPAUSEPARAM
813 ifr.ifr_data = (void *)ðpause;
814 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
816 WARN("port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
817 " %s", dev->data->port_id, strerror(rte_errno));
820 fc_conf->autoneg = ethpause.autoneg;
821 if (ethpause.rx_pause && ethpause.tx_pause)
822 fc_conf->mode = RTE_FC_FULL;
823 else if (ethpause.rx_pause)
824 fc_conf->mode = RTE_FC_RX_PAUSE;
825 else if (ethpause.tx_pause)
826 fc_conf->mode = RTE_FC_TX_PAUSE;
828 fc_conf->mode = RTE_FC_NONE;
833 * DPDK callback to modify flow control parameters.
836 * Pointer to Ethernet device structure.
838 * Flow control parameters.
841 * 0 on success, a negative errno value otherwise and rte_errno is set.
844 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
847 struct ethtool_pauseparam ethpause = {
848 .cmd = ETHTOOL_SPAUSEPARAM
852 ifr.ifr_data = (void *)ðpause;
853 ethpause.autoneg = fc_conf->autoneg;
854 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
855 (fc_conf->mode & RTE_FC_RX_PAUSE))
856 ethpause.rx_pause = 1;
858 ethpause.rx_pause = 0;
860 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
861 (fc_conf->mode & RTE_FC_TX_PAUSE))
862 ethpause.tx_pause = 1;
864 ethpause.tx_pause = 0;
865 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
867 WARN("port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
868 " failed: %s", dev->data->port_id, strerror(rte_errno));
875 * Get PCI information from struct ibv_device.
878 * Pointer to Ethernet device structure.
879 * @param[out] pci_addr
880 * PCI bus address output buffer.
883 * 0 on success, a negative errno value otherwise and rte_errno is set.
886 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
887 struct rte_pci_addr *pci_addr)
891 MKSTR(path, "%s/device/uevent", device->ibdev_path);
893 file = fopen(path, "rb");
898 while (fgets(line, sizeof(line), file) == line) {
899 size_t len = strlen(line);
902 /* Truncate long lines. */
903 if (len == (sizeof(line) - 1))
904 while (line[(len - 1)] != '\n') {
908 line[(len - 1)] = ret;
910 /* Extract information. */
913 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
917 &pci_addr->function) == 4) {
927 * Update the link status.
930 * Pointer to Ethernet device.
933 * Zero if the callback process can be called immediately, negative errno
934 * value otherwise and rte_errno is set.
937 mlx5_link_status_update(struct rte_eth_dev *dev)
939 struct priv *priv = dev->data->dev_private;
940 struct rte_eth_link *link = &dev->data->dev_link;
943 ret = mlx5_link_update(dev, 0);
946 if (((link->link_speed == 0) && link->link_status) ||
947 ((link->link_speed != 0) && !link->link_status)) {
949 * Inconsistent status. Event likely occurred before the
950 * kernel netdevice exposes the new status.
952 if (!priv->pending_alarm) {
953 priv->pending_alarm = 1;
954 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
955 mlx5_dev_link_status_handler,
959 } else if (unlikely(priv->pending_alarm)) {
960 /* Link interrupt occurred while alarm is already scheduled. */
961 priv->pending_alarm = 0;
962 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
968 * Device status handler.
971 * Pointer to Ethernet device.
973 * Pointer to event flags holder.
976 * Events bitmap of callback process which can be called immediately.
979 mlx5_dev_status_handler(struct rte_eth_dev *dev)
981 struct priv *priv = dev->data->dev_private;
982 struct ibv_async_event event;
985 /* Read all message and acknowledge them. */
987 if (mlx5_glue->get_async_event(priv->ctx, &event))
989 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
990 event.event_type == IBV_EVENT_PORT_ERR) &&
991 (dev->data->dev_conf.intr_conf.lsc == 1))
992 ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
993 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
994 dev->data->dev_conf.intr_conf.rmv == 1)
995 ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
997 DEBUG("port %u event type %d on not handled",
998 dev->data->port_id, event.event_type);
999 mlx5_glue->ack_async_event(&event);
1001 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1002 if (mlx5_link_status_update(dev))
1003 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1008 * Handle delayed link status event.
1011 * Registered argument.
1014 mlx5_dev_link_status_handler(void *arg)
1016 struct rte_eth_dev *dev = arg;
1017 struct priv *priv = dev->data->dev_private;
1020 priv->pending_alarm = 0;
1021 ret = mlx5_link_status_update(dev);
1023 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1027 * Handle interrupts from the NIC.
1029 * @param[in] intr_handle
1030 * Interrupt handler.
1032 * Callback argument.
1035 mlx5_dev_interrupt_handler(void *cb_arg)
1037 struct rte_eth_dev *dev = cb_arg;
1040 events = mlx5_dev_status_handler(dev);
1041 if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1042 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1043 if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1044 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1048 * Handle interrupts from the socket.
1051 * Callback argument.
1054 mlx5_dev_handler_socket(void *cb_arg)
1056 struct rte_eth_dev *dev = cb_arg;
1058 mlx5_socket_handle(dev);
1062 * Uninstall interrupt handler.
1065 * Pointer to Ethernet device.
1068 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1070 struct priv *priv = dev->data->dev_private;
1072 if (dev->data->dev_conf.intr_conf.lsc ||
1073 dev->data->dev_conf.intr_conf.rmv)
1074 rte_intr_callback_unregister(&priv->intr_handle,
1075 mlx5_dev_interrupt_handler, dev);
1076 if (priv->primary_socket)
1077 rte_intr_callback_unregister(&priv->intr_handle_socket,
1078 mlx5_dev_handler_socket, dev);
1079 if (priv->pending_alarm) {
1080 priv->pending_alarm = 0;
1081 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1083 priv->intr_handle.fd = 0;
1084 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1085 priv->intr_handle_socket.fd = 0;
1086 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1090 * Install interrupt handler.
1093 * Pointer to Ethernet device.
1096 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1098 struct priv *priv = dev->data->dev_private;
1102 assert(priv->ctx->async_fd > 0);
1103 flags = fcntl(priv->ctx->async_fd, F_GETFL);
1104 ret = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1106 INFO("port %u failed to change file descriptor async event"
1107 " queue", dev->data->port_id);
1108 dev->data->dev_conf.intr_conf.lsc = 0;
1109 dev->data->dev_conf.intr_conf.rmv = 0;
1111 if (dev->data->dev_conf.intr_conf.lsc ||
1112 dev->data->dev_conf.intr_conf.rmv) {
1113 priv->intr_handle.fd = priv->ctx->async_fd;
1114 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1115 rte_intr_callback_register(&priv->intr_handle,
1116 mlx5_dev_interrupt_handler, dev);
1118 ret = mlx5_socket_init(dev);
1120 ERROR("port %u cannot initialise socket: %s",
1121 dev->data->port_id, strerror(rte_errno));
1122 else if (priv->primary_socket) {
1123 priv->intr_handle_socket.fd = priv->primary_socket;
1124 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1125 rte_intr_callback_register(&priv->intr_handle_socket,
1126 mlx5_dev_handler_socket, dev);
1131 * DPDK callback to bring the link DOWN.
1134 * Pointer to Ethernet device structure.
1137 * 0 on success, a negative errno value otherwise and rte_errno is set.
1140 mlx5_set_link_down(struct rte_eth_dev *dev)
1142 return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1146 * DPDK callback to bring the link UP.
1149 * Pointer to Ethernet device structure.
1152 * 0 on success, a negative errno value otherwise and rte_errno is set.
1155 mlx5_set_link_up(struct rte_eth_dev *dev)
1157 return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1161 * Configure the TX function to use.
1164 * Pointer to private data structure.
1167 * Pointer to selected Tx burst function.
1170 mlx5_select_tx_function(struct rte_eth_dev *dev)
1172 struct priv *priv = dev->data->dev_private;
1173 eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1174 struct mlx5_dev_config *config = &priv->config;
1175 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1176 int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1177 DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1178 DEV_TX_OFFLOAD_GRE_TNL_TSO));
1179 int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1181 assert(priv != NULL);
1182 /* Select appropriate TX function. */
1183 if (vlan_insert || tso)
1184 return tx_pkt_burst;
1185 if (config->mps == MLX5_MPW_ENHANCED) {
1186 if (mlx5_check_vec_tx_support(dev) > 0) {
1187 if (mlx5_check_raw_vec_tx_support(dev) > 0)
1188 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1190 tx_pkt_burst = mlx5_tx_burst_vec;
1191 DEBUG("port %u selected enhanced MPW Tx vectorized"
1192 " function", dev->data->port_id);
1194 tx_pkt_burst = mlx5_tx_burst_empw;
1195 DEBUG("port %u selected enhanced MPW Tx function",
1196 dev->data->port_id);
1198 } else if (config->mps && (config->txq_inline > 0)) {
1199 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1200 DEBUG("port %u selected MPW inline Tx function",
1201 dev->data->port_id);
1202 } else if (config->mps) {
1203 tx_pkt_burst = mlx5_tx_burst_mpw;
1204 DEBUG("port %u selected MPW Tx function", dev->data->port_id);
1206 return tx_pkt_burst;
1210 * Configure the RX function to use.
1213 * Pointer to private data structure.
1216 * Pointer to selected Rx burst function.
1219 mlx5_select_rx_function(struct rte_eth_dev *dev)
1221 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1223 assert(dev != NULL);
1224 if (mlx5_check_vec_rx_support(dev) > 0) {
1225 rx_pkt_burst = mlx5_rx_burst_vec;
1226 DEBUG("port %u selected Rx vectorized function",
1227 dev->data->port_id);
1229 return rx_pkt_burst;
1233 * Check if mlx5 device was removed.
1236 * Pointer to Ethernet device structure.
1239 * 1 when device is removed, otherwise 0.
1242 mlx5_is_removed(struct rte_eth_dev *dev)
1244 struct ibv_device_attr device_attr;
1245 struct priv *priv = dev->data->dev_private;
1247 if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)