1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2017 6WIND S.A.
3 * Copyright 2017 Mellanox Technologies, Ltd
8 * Miscellaneous control operations for mlx4 driver.
14 #include <linux/ethtool.h>
15 #include <linux/sockios.h>
17 #include <netinet/ip.h>
23 #include <sys/ioctl.h>
24 #include <sys/socket.h>
27 /* Verbs headers do not support -pedantic. */
29 #pragma GCC diagnostic ignored "-Wpedantic"
31 #include <infiniband/verbs.h>
33 #pragma GCC diagnostic error "-Wpedantic"
36 #include <rte_bus_pci.h>
37 #include <rte_errno.h>
38 #include <rte_ethdev_driver.h>
39 #include <rte_ether.h>
42 #include <rte_string_fns.h>
45 #include "mlx4_flow.h"
46 #include "mlx4_glue.h"
47 #include "mlx4_rxtx.h"
48 #include "mlx4_utils.h"
51 * Get interface name from private structure.
54 * Pointer to private structure.
56 * Interface name output buffer.
59 * 0 on success, negative errno value otherwise and rte_errno is set.
62 mlx4_get_ifname(const struct mlx4_priv *priv, char (*ifname)[IF_NAMESIZE])
66 unsigned int dev_type = 0;
67 unsigned int dev_port_prev = ~0u;
68 char match[IF_NAMESIZE] = "";
71 MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
79 while ((dent = readdir(dir)) != NULL) {
80 char *name = dent->d_name;
82 unsigned int dev_port;
85 if ((name[0] == '.') &&
87 ((name[1] == '.') && (name[2] == '\0'))))
90 MKSTR(path, "%s/device/net/%s/%s",
91 priv->ctx->device->ibdev_path, name,
92 (dev_type ? "dev_id" : "dev_port"));
94 file = fopen(path, "rb");
99 * Switch to dev_id when dev_port does not exist as
100 * is the case with Linux kernel versions < 3.15.
111 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
116 * Switch to dev_id when dev_port returns the same value for
117 * all ports. May happen when using a MOFED release older than
118 * 3.0 with a Linux kernel >= 3.15.
120 if (dev_port == dev_port_prev)
122 dev_port_prev = dev_port;
123 if (dev_port == (priv->port - 1u))
124 strlcpy(match, name, sizeof(match));
127 if (match[0] == '\0') {
131 strncpy(*ifname, match, sizeof(*ifname));
136 * Perform ifreq ioctl() on associated Ethernet device.
139 * Pointer to private structure.
141 * Request number to pass to ioctl().
143 * Interface request structure output buffer.
146 * 0 on success, negative errno value otherwise and rte_errno is set.
149 mlx4_ifreq(const struct mlx4_priv *priv, int req, struct ifreq *ifr)
151 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
158 ret = mlx4_get_ifname(priv, &ifr->ifr_name);
159 if (!ret && ioctl(sock, req, ifr) == -1) {
168 * Get MAC address by querying netdevice.
171 * Pointer to private structure.
173 * MAC address output buffer.
176 * 0 on success, negative errno value otherwise and rte_errno is set.
179 mlx4_get_mac(struct mlx4_priv *priv, uint8_t (*mac)[RTE_ETHER_ADDR_LEN])
181 struct ifreq request;
182 int ret = mlx4_ifreq(priv, SIOCGIFHWADDR, &request);
186 memcpy(mac, request.ifr_hwaddr.sa_data, RTE_ETHER_ADDR_LEN);
194 * Pointer to private structure.
196 * MTU value output buffer.
199 * 0 on success, negative errno value otherwise and rte_errno is set.
202 mlx4_mtu_get(struct mlx4_priv *priv, uint16_t *mtu)
204 struct ifreq request;
205 int ret = mlx4_ifreq(priv, SIOCGIFMTU, &request);
209 *mtu = request.ifr_mtu;
214 * DPDK callback to change the MTU.
217 * Pointer to Ethernet device structure.
222 * 0 on success, negative errno value otherwise and rte_errno is set.
225 mlx4_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
227 struct mlx4_priv *priv = dev->data->dev_private;
228 struct ifreq request = { .ifr_mtu = mtu, };
229 int ret = mlx4_ifreq(priv, SIOCSIFMTU, &request);
241 * Pointer to private structure.
243 * Bitmask for flags that must remain untouched.
245 * Bitmask for flags to modify.
248 * 0 on success, negative errno value otherwise and rte_errno is set.
251 mlx4_set_flags(struct mlx4_priv *priv, unsigned int keep, unsigned int flags)
253 struct ifreq request;
254 int ret = mlx4_ifreq(priv, SIOCGIFFLAGS, &request);
258 request.ifr_flags &= keep;
259 request.ifr_flags |= flags & ~keep;
260 return mlx4_ifreq(priv, SIOCSIFFLAGS, &request);
264 * Change the link state (UP / DOWN).
267 * Pointer to Ethernet device private data.
269 * Nonzero for link up, otherwise link down.
272 * 0 on success, negative errno value otherwise and rte_errno is set.
275 mlx4_dev_set_link(struct mlx4_priv *priv, int up)
280 err = mlx4_set_flags(priv, ~IFF_UP, IFF_UP);
284 err = mlx4_set_flags(priv, ~IFF_UP, ~IFF_UP);
292 * DPDK callback to bring the link DOWN.
295 * Pointer to Ethernet device structure.
298 * 0 on success, negative errno value otherwise and rte_errno is set.
301 mlx4_dev_set_link_down(struct rte_eth_dev *dev)
303 struct mlx4_priv *priv = dev->data->dev_private;
305 return mlx4_dev_set_link(priv, 0);
309 * DPDK callback to bring the link UP.
312 * Pointer to Ethernet device structure.
315 * 0 on success, negative errno value otherwise and rte_errno is set.
318 mlx4_dev_set_link_up(struct rte_eth_dev *dev)
320 struct mlx4_priv *priv = dev->data->dev_private;
322 return mlx4_dev_set_link(priv, 1);
326 * Supported Rx mode toggles.
328 * Even and odd values respectively stand for off and on.
331 RXMODE_TOGGLE_PROMISC_OFF,
332 RXMODE_TOGGLE_PROMISC_ON,
333 RXMODE_TOGGLE_ALLMULTI_OFF,
334 RXMODE_TOGGLE_ALLMULTI_ON,
338 * Helper function to toggle promiscuous and all multicast modes.
341 * Pointer to Ethernet device structure.
346 * 0 on success, a negative errno value otherwise and rte_errno is set.
349 mlx4_rxmode_toggle(struct rte_eth_dev *dev, enum rxmode_toggle toggle)
351 struct mlx4_priv *priv = dev->data->dev_private;
353 struct rte_flow_error error;
357 case RXMODE_TOGGLE_PROMISC_OFF:
358 case RXMODE_TOGGLE_PROMISC_ON:
359 mode = "promiscuous";
360 dev->data->promiscuous = toggle & 1;
362 case RXMODE_TOGGLE_ALLMULTI_OFF:
363 case RXMODE_TOGGLE_ALLMULTI_ON:
364 mode = "all multicast";
365 dev->data->all_multicast = toggle & 1;
371 ret = mlx4_flow_sync(priv, &error);
375 ERROR("cannot toggle %s mode (code %d, \"%s\"),"
376 " flow error type %d, cause %p, message: %s",
377 mode, rte_errno, strerror(rte_errno), error.type, error.cause,
378 error.message ? error.message : "(unspecified)");
383 * DPDK callback to enable promiscuous mode.
386 * Pointer to Ethernet device structure.
389 * 0 on success, a negative errno value otherwise and rte_errno is set.
392 mlx4_promiscuous_enable(struct rte_eth_dev *dev)
394 return mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_PROMISC_ON);
398 * DPDK callback to disable promiscuous mode.
401 * Pointer to Ethernet device structure.
404 * 0 on success, a negative errno value otherwise and rte_errno is set.
407 mlx4_promiscuous_disable(struct rte_eth_dev *dev)
409 return mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_PROMISC_OFF);
413 * DPDK callback to enable all multicast mode.
416 * Pointer to Ethernet device structure.
419 * 0 on success, a negative errno value otherwise and rte_errno is set.
422 mlx4_allmulticast_enable(struct rte_eth_dev *dev)
424 return mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_ALLMULTI_ON);
428 * DPDK callback to disable all multicast mode.
431 * Pointer to Ethernet device structure.
434 * 0 on success, a negative errno value otherwise and rte_errno is set.
437 mlx4_allmulticast_disable(struct rte_eth_dev *dev)
439 return mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_ALLMULTI_OFF);
443 * DPDK callback to remove a MAC address.
446 * Pointer to Ethernet device structure.
451 mlx4_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
453 struct mlx4_priv *priv = dev->data->dev_private;
454 struct rte_flow_error error;
456 if (index >= RTE_DIM(priv->mac) - priv->mac_mc) {
460 memset(&priv->mac[index], 0, sizeof(priv->mac[index]));
461 if (!mlx4_flow_sync(priv, &error))
463 ERROR("failed to synchronize flow rules after removing MAC address"
464 " at index %d (code %d, \"%s\"),"
465 " flow error type %d, cause %p, message: %s",
466 index, rte_errno, strerror(rte_errno), error.type, error.cause,
467 error.message ? error.message : "(unspecified)");
471 * DPDK callback to add a MAC address.
474 * Pointer to Ethernet device structure.
476 * MAC address to register.
480 * VMDq pool index to associate address with (ignored).
483 * 0 on success, negative errno value otherwise and rte_errno is set.
486 mlx4_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr,
487 uint32_t index, uint32_t vmdq)
489 struct mlx4_priv *priv = dev->data->dev_private;
490 struct rte_flow_error error;
494 if (index >= RTE_DIM(priv->mac) - priv->mac_mc) {
498 memcpy(&priv->mac[index], mac_addr, sizeof(priv->mac[index]));
499 ret = mlx4_flow_sync(priv, &error);
502 ERROR("failed to synchronize flow rules after adding MAC address"
503 " at index %d (code %d, \"%s\"),"
504 " flow error type %d, cause %p, message: %s",
505 index, rte_errno, strerror(rte_errno), error.type, error.cause,
506 error.message ? error.message : "(unspecified)");
511 * DPDK callback to configure multicast addresses.
514 * Pointer to Ethernet device structure.
516 * List of MAC addresses to register.
518 * Number of entries in list.
521 * 0 on success, negative errno value otherwise and rte_errno is set.
524 mlx4_set_mc_addr_list(struct rte_eth_dev *dev, struct rte_ether_addr *list,
527 struct mlx4_priv *priv = dev->data->dev_private;
528 struct rte_flow_error error;
531 if (num > RTE_DIM(priv->mac)) {
536 * Make sure there is enough room to increase the number of
537 * multicast entries without overwriting standard entries.
539 if (num > priv->mac_mc) {
542 for (i = RTE_DIM(priv->mac) - num;
543 i != RTE_DIM(priv->mac) - priv->mac_mc;
545 if (!rte_is_zero_ether_addr(&priv->mac[i])) {
549 } else if (num < priv->mac_mc) {
550 /* Clear unused entries. */
551 memset(priv->mac + RTE_DIM(priv->mac) - priv->mac_mc,
553 sizeof(priv->mac[0]) * (priv->mac_mc - num));
555 memcpy(priv->mac + RTE_DIM(priv->mac) - num, list, sizeof(*list) * num);
557 ret = mlx4_flow_sync(priv, &error);
560 ERROR("failed to synchronize flow rules after modifying MC list,"
561 " (code %d, \"%s\"), flow error type %d, cause %p, message: %s",
562 rte_errno, strerror(rte_errno), error.type, error.cause,
563 error.message ? error.message : "(unspecified)");
568 * DPDK callback to configure a VLAN filter.
571 * Pointer to Ethernet device structure.
578 * 0 on success, negative errno value otherwise and rte_errno is set.
581 mlx4_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
583 struct mlx4_priv *priv = dev->data->dev_private;
584 struct rte_flow_error error;
585 unsigned int vidx = vlan_id / 64;
586 unsigned int vbit = vlan_id % 64;
590 if (vidx >= RTE_DIM(dev->data->vlan_filter_conf.ids)) {
594 v = &dev->data->vlan_filter_conf.ids[vidx];
595 *v &= ~(UINT64_C(1) << vbit);
596 *v |= (uint64_t)!!on << vbit;
597 ret = mlx4_flow_sync(priv, &error);
600 ERROR("failed to synchronize flow rules after %s VLAN filter on ID %u"
601 " (code %d, \"%s\"), "
602 " flow error type %d, cause %p, message: %s",
603 on ? "enabling" : "disabling", vlan_id,
604 rte_errno, strerror(rte_errno), error.type, error.cause,
605 error.message ? error.message : "(unspecified)");
610 * DPDK callback to set the primary MAC address.
613 * Pointer to Ethernet device structure.
615 * MAC address to register.
618 * 0 on success, negative errno value otherwise and rte_errno is set.
621 mlx4_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
623 return mlx4_mac_addr_add(dev, mac_addr, 0, 0);
627 * DPDK callback to get information about the device.
630 * Pointer to Ethernet device structure.
632 * Info structure output buffer.
635 mlx4_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
637 struct mlx4_priv *priv = dev->data->dev_private;
640 /* FIXME: we should ask the device for these values. */
641 info->min_rx_bufsize = 32;
642 info->max_rx_pktlen = 65536;
644 * Since we need one CQ per QP, the limit is the minimum number
645 * between the two values.
647 max = ((priv->device_attr.max_cq > priv->device_attr.max_qp) ?
648 priv->device_attr.max_qp : priv->device_attr.max_cq);
649 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
652 info->max_rx_queues = max;
653 info->max_tx_queues = max;
654 info->max_mac_addrs = RTE_DIM(priv->mac);
655 info->tx_offload_capa = mlx4_get_tx_port_offloads(priv);
656 info->rx_queue_offload_capa = mlx4_get_rx_queue_offloads(priv);
657 info->rx_offload_capa = (mlx4_get_rx_port_offloads(priv) |
658 info->rx_queue_offload_capa);
659 info->if_index = priv->if_index;
660 info->hash_key_size = MLX4_RSS_HASH_KEY_SIZE;
667 info->flow_type_rss_offloads = mlx4_conv_rss_types(priv, 0, 1);
673 * Get firmware version of a device.
676 * Ethernet device port.
678 * String output allocated by caller.
680 * Size of the output string, including terminating null byte.
683 * 0 on success, or the size of the non truncated string if too big.
685 int mlx4_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
687 struct mlx4_priv *priv = dev->data->dev_private;
688 struct ibv_device_attr *attr = &priv->device_attr;
689 size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
694 strlcpy(fw_ver, attr->fw_ver, fw_size);
699 * DPDK callback to get device statistics.
702 * Pointer to Ethernet device structure.
704 * Stats structure output buffer.
707 mlx4_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
709 struct rte_eth_stats tmp;
713 memset(&tmp, 0, sizeof(tmp));
714 /* Add software counters. */
715 for (i = 0; i != dev->data->nb_rx_queues; ++i) {
716 struct rxq *rxq = dev->data->rx_queues[i];
720 idx = rxq->stats.idx;
721 if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
722 tmp.q_ipackets[idx] += rxq->stats.ipackets;
723 tmp.q_ibytes[idx] += rxq->stats.ibytes;
724 tmp.q_errors[idx] += (rxq->stats.idropped +
725 rxq->stats.rx_nombuf);
727 tmp.ipackets += rxq->stats.ipackets;
728 tmp.ibytes += rxq->stats.ibytes;
729 tmp.ierrors += rxq->stats.idropped;
730 tmp.rx_nombuf += rxq->stats.rx_nombuf;
732 for (i = 0; i != dev->data->nb_tx_queues; ++i) {
733 struct txq *txq = dev->data->tx_queues[i];
737 idx = txq->stats.idx;
738 if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
739 tmp.q_opackets[idx] += txq->stats.opackets;
740 tmp.q_obytes[idx] += txq->stats.obytes;
742 tmp.opackets += txq->stats.opackets;
743 tmp.obytes += txq->stats.obytes;
744 tmp.oerrors += txq->stats.odropped;
751 * DPDK callback to clear device statistics.
754 * Pointer to Ethernet device structure.
757 * alwasy 0 on success
760 mlx4_stats_reset(struct rte_eth_dev *dev)
764 for (i = 0; i != dev->data->nb_rx_queues; ++i) {
765 struct rxq *rxq = dev->data->rx_queues[i];
768 rxq->stats = (struct mlx4_rxq_stats){
769 .idx = rxq->stats.idx,
772 for (i = 0; i != dev->data->nb_tx_queues; ++i) {
773 struct txq *txq = dev->data->tx_queues[i];
776 txq->stats = (struct mlx4_txq_stats){
777 .idx = txq->stats.idx,
785 * DPDK callback to retrieve physical link information.
788 * Pointer to Ethernet device structure.
789 * @param wait_to_complete
790 * Wait for request completion (ignored).
793 * 0 on success, negative errno value otherwise and rte_errno is set.
796 mlx4_link_update(struct rte_eth_dev *dev, int wait_to_complete)
798 const struct mlx4_priv *priv = dev->data->dev_private;
799 struct ethtool_cmd edata = {
803 struct rte_eth_link dev_link;
810 (void)wait_to_complete;
811 if (mlx4_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
812 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(rte_errno));
815 memset(&dev_link, 0, sizeof(dev_link));
816 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
817 (ifr.ifr_flags & IFF_RUNNING));
818 ifr.ifr_data = (void *)&edata;
819 if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
820 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
821 strerror(rte_errno));
824 link_speed = ethtool_cmd_speed(&edata);
825 if (link_speed == -1)
826 dev_link.link_speed = ETH_SPEED_NUM_NONE;
828 dev_link.link_speed = link_speed;
829 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
830 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
831 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
832 ETH_LINK_SPEED_FIXED);
833 dev->data->dev_link = dev_link;
838 * DPDK callback to get flow control status.
841 * Pointer to Ethernet device structure.
842 * @param[out] fc_conf
843 * Flow control output buffer.
846 * 0 on success, negative errno value otherwise and rte_errno is set.
849 mlx4_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
851 struct mlx4_priv *priv = dev->data->dev_private;
853 struct ethtool_pauseparam ethpause = {
854 .cmd = ETHTOOL_GPAUSEPARAM,
858 ifr.ifr_data = (void *)ðpause;
859 if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
861 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
863 strerror(rte_errno));
866 fc_conf->autoneg = ethpause.autoneg;
867 if (ethpause.rx_pause && ethpause.tx_pause)
868 fc_conf->mode = RTE_FC_FULL;
869 else if (ethpause.rx_pause)
870 fc_conf->mode = RTE_FC_RX_PAUSE;
871 else if (ethpause.tx_pause)
872 fc_conf->mode = RTE_FC_TX_PAUSE;
874 fc_conf->mode = RTE_FC_NONE;
882 * DPDK callback to modify flow control parameters.
885 * Pointer to Ethernet device structure.
887 * Flow control parameters.
890 * 0 on success, negative errno value otherwise and rte_errno is set.
893 mlx4_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
895 struct mlx4_priv *priv = dev->data->dev_private;
897 struct ethtool_pauseparam ethpause = {
898 .cmd = ETHTOOL_SPAUSEPARAM,
902 ifr.ifr_data = (void *)ðpause;
903 ethpause.autoneg = fc_conf->autoneg;
904 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
905 (fc_conf->mode & RTE_FC_RX_PAUSE))
906 ethpause.rx_pause = 1;
908 ethpause.rx_pause = 0;
909 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
910 (fc_conf->mode & RTE_FC_TX_PAUSE))
911 ethpause.tx_pause = 1;
913 ethpause.tx_pause = 0;
914 if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
916 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
918 strerror(rte_errno));
928 * DPDK callback to retrieve the received packet types that are recognized
932 * Pointer to Ethernet device structure.
935 * Pointer to an array of recognized packet types if in Rx burst mode,
939 mlx4_dev_supported_ptypes_get(struct rte_eth_dev *dev)
941 static const uint32_t ptypes[] = {
942 /* refers to rxq_cq_to_pkt_type() */
944 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
945 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
951 static const uint32_t ptypes_l2tun[] = {
952 /* refers to rxq_cq_to_pkt_type() */
954 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
955 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
959 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
960 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
963 struct mlx4_priv *priv = dev->data->dev_private;
965 if (dev->rx_pkt_burst == mlx4_rx_burst) {
966 if (priv->hw_csum_l2tun)
975 * Check if mlx4 device was removed.
978 * Pointer to Ethernet device structure.
981 * 1 when device is removed, otherwise 0.
984 mlx4_is_removed(struct rte_eth_dev *dev)
986 struct ibv_device_attr device_attr;
987 struct mlx4_priv *priv = dev->data->dev_private;
989 if (mlx4_glue->query_device(priv->ctx, &device_attr) == EIO)