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 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 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 priv *priv, uint8_t (*mac)[ETHER_ADDR_LEN])
181 struct ifreq request;
182 int ret = mlx4_ifreq(priv, SIOCGIFHWADDR, &request);
186 memcpy(mac, request.ifr_hwaddr.sa_data, 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 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 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 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 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 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 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 mlx4_rxmode_toggle(struct rte_eth_dev *dev, enum rxmode_toggle toggle)
348 struct priv *priv = dev->data->dev_private;
350 struct rte_flow_error error;
353 case RXMODE_TOGGLE_PROMISC_OFF:
354 case RXMODE_TOGGLE_PROMISC_ON:
355 mode = "promiscuous";
356 dev->data->promiscuous = toggle & 1;
358 case RXMODE_TOGGLE_ALLMULTI_OFF:
359 case RXMODE_TOGGLE_ALLMULTI_ON:
360 mode = "all multicast";
361 dev->data->all_multicast = toggle & 1;
364 if (!mlx4_flow_sync(priv, &error))
366 ERROR("cannot toggle %s mode (code %d, \"%s\"),"
367 " flow error type %d, cause %p, message: %s",
368 mode, rte_errno, strerror(rte_errno), error.type, error.cause,
369 error.message ? error.message : "(unspecified)");
373 * DPDK callback to enable promiscuous mode.
376 * Pointer to Ethernet device structure.
379 mlx4_promiscuous_enable(struct rte_eth_dev *dev)
381 mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_PROMISC_ON);
385 * DPDK callback to disable promiscuous mode.
388 * Pointer to Ethernet device structure.
391 mlx4_promiscuous_disable(struct rte_eth_dev *dev)
393 mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_PROMISC_OFF);
397 * DPDK callback to enable all multicast mode.
400 * Pointer to Ethernet device structure.
403 mlx4_allmulticast_enable(struct rte_eth_dev *dev)
405 mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_ALLMULTI_ON);
409 * DPDK callback to disable all multicast mode.
412 * Pointer to Ethernet device structure.
415 mlx4_allmulticast_disable(struct rte_eth_dev *dev)
417 mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_ALLMULTI_OFF);
421 * DPDK callback to remove a MAC address.
424 * Pointer to Ethernet device structure.
429 mlx4_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
431 struct priv *priv = dev->data->dev_private;
432 struct rte_flow_error error;
434 if (index >= RTE_DIM(priv->mac)) {
438 memset(&priv->mac[index], 0, sizeof(priv->mac[index]));
439 if (!mlx4_flow_sync(priv, &error))
441 ERROR("failed to synchronize flow rules after removing MAC address"
442 " at index %d (code %d, \"%s\"),"
443 " flow error type %d, cause %p, message: %s",
444 index, rte_errno, strerror(rte_errno), error.type, error.cause,
445 error.message ? error.message : "(unspecified)");
449 * DPDK callback to add a MAC address.
452 * Pointer to Ethernet device structure.
454 * MAC address to register.
458 * VMDq pool index to associate address with (ignored).
461 * 0 on success, negative errno value otherwise and rte_errno is set.
464 mlx4_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
465 uint32_t index, uint32_t vmdq)
467 struct priv *priv = dev->data->dev_private;
468 struct rte_flow_error error;
472 if (index >= RTE_DIM(priv->mac)) {
476 memcpy(&priv->mac[index], mac_addr, sizeof(priv->mac[index]));
477 ret = mlx4_flow_sync(priv, &error);
480 ERROR("failed to synchronize flow rules after adding MAC address"
481 " at index %d (code %d, \"%s\"),"
482 " flow error type %d, cause %p, message: %s",
483 index, rte_errno, strerror(rte_errno), error.type, error.cause,
484 error.message ? error.message : "(unspecified)");
489 * DPDK callback to configure a VLAN filter.
492 * Pointer to Ethernet device structure.
499 * 0 on success, negative errno value otherwise and rte_errno is set.
502 mlx4_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
504 struct priv *priv = dev->data->dev_private;
505 struct rte_flow_error error;
506 unsigned int vidx = vlan_id / 64;
507 unsigned int vbit = vlan_id % 64;
511 if (vidx >= RTE_DIM(dev->data->vlan_filter_conf.ids)) {
515 v = &dev->data->vlan_filter_conf.ids[vidx];
516 *v &= ~(UINT64_C(1) << vbit);
517 *v |= (uint64_t)!!on << vbit;
518 ret = mlx4_flow_sync(priv, &error);
521 ERROR("failed to synchronize flow rules after %s VLAN filter on ID %u"
522 " (code %d, \"%s\"), "
523 " flow error type %d, cause %p, message: %s",
524 on ? "enabling" : "disabling", vlan_id,
525 rte_errno, strerror(rte_errno), error.type, error.cause,
526 error.message ? error.message : "(unspecified)");
531 * DPDK callback to set the primary MAC address.
534 * Pointer to Ethernet device structure.
536 * MAC address to register.
539 * 0 on success, negative errno value otherwise and rte_errno is set.
542 mlx4_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
544 return mlx4_mac_addr_add(dev, mac_addr, 0, 0);
548 * DPDK callback to get information about the device.
551 * Pointer to Ethernet device structure.
553 * Info structure output buffer.
556 mlx4_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
558 struct priv *priv = dev->data->dev_private;
560 char ifname[IF_NAMESIZE];
562 /* FIXME: we should ask the device for these values. */
563 info->min_rx_bufsize = 32;
564 info->max_rx_pktlen = 65536;
566 * Since we need one CQ per QP, the limit is the minimum number
567 * between the two values.
569 max = ((priv->device_attr.max_cq > priv->device_attr.max_qp) ?
570 priv->device_attr.max_qp : priv->device_attr.max_cq);
571 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
574 info->max_rx_queues = max;
575 info->max_tx_queues = max;
576 info->max_mac_addrs = RTE_DIM(priv->mac);
577 info->tx_offload_capa = mlx4_get_tx_port_offloads(priv);
578 info->rx_queue_offload_capa = mlx4_get_rx_queue_offloads(priv);
579 info->rx_offload_capa = (mlx4_get_rx_port_offloads(priv) |
580 info->rx_queue_offload_capa);
581 if (mlx4_get_ifname(priv, &ifname) == 0)
582 info->if_index = if_nametoindex(ifname);
583 info->hash_key_size = MLX4_RSS_HASH_KEY_SIZE;
593 * DPDK callback to get device statistics.
596 * Pointer to Ethernet device structure.
598 * Stats structure output buffer.
601 mlx4_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
603 struct rte_eth_stats tmp;
607 memset(&tmp, 0, sizeof(tmp));
608 /* Add software counters. */
609 for (i = 0; i != dev->data->nb_rx_queues; ++i) {
610 struct rxq *rxq = dev->data->rx_queues[i];
614 idx = rxq->stats.idx;
615 if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
616 tmp.q_ipackets[idx] += rxq->stats.ipackets;
617 tmp.q_ibytes[idx] += rxq->stats.ibytes;
618 tmp.q_errors[idx] += (rxq->stats.idropped +
619 rxq->stats.rx_nombuf);
621 tmp.ipackets += rxq->stats.ipackets;
622 tmp.ibytes += rxq->stats.ibytes;
623 tmp.ierrors += rxq->stats.idropped;
624 tmp.rx_nombuf += rxq->stats.rx_nombuf;
626 for (i = 0; i != dev->data->nb_tx_queues; ++i) {
627 struct txq *txq = dev->data->tx_queues[i];
631 idx = txq->stats.idx;
632 if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
633 tmp.q_opackets[idx] += txq->stats.opackets;
634 tmp.q_obytes[idx] += txq->stats.obytes;
635 tmp.q_errors[idx] += txq->stats.odropped;
637 tmp.opackets += txq->stats.opackets;
638 tmp.obytes += txq->stats.obytes;
639 tmp.oerrors += txq->stats.odropped;
646 * DPDK callback to clear device statistics.
649 * Pointer to Ethernet device structure.
652 mlx4_stats_reset(struct rte_eth_dev *dev)
656 for (i = 0; i != dev->data->nb_rx_queues; ++i) {
657 struct rxq *rxq = dev->data->rx_queues[i];
660 rxq->stats = (struct mlx4_rxq_stats){
661 .idx = rxq->stats.idx,
664 for (i = 0; i != dev->data->nb_tx_queues; ++i) {
665 struct txq *txq = dev->data->tx_queues[i];
668 txq->stats = (struct mlx4_txq_stats){
669 .idx = txq->stats.idx,
675 * DPDK callback to retrieve physical link information.
678 * Pointer to Ethernet device structure.
679 * @param wait_to_complete
680 * Wait for request completion (ignored).
683 * 0 on success, negative errno value otherwise and rte_errno is set.
686 mlx4_link_update(struct rte_eth_dev *dev, int wait_to_complete)
688 const struct priv *priv = dev->data->dev_private;
689 struct ethtool_cmd edata = {
693 struct rte_eth_link dev_link;
700 (void)wait_to_complete;
701 if (mlx4_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
702 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(rte_errno));
705 memset(&dev_link, 0, sizeof(dev_link));
706 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
707 (ifr.ifr_flags & IFF_RUNNING));
708 ifr.ifr_data = (void *)&edata;
709 if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
710 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
711 strerror(rte_errno));
714 link_speed = ethtool_cmd_speed(&edata);
715 if (link_speed == -1)
716 dev_link.link_speed = 0;
718 dev_link.link_speed = link_speed;
719 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
720 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
721 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
722 ETH_LINK_SPEED_FIXED);
723 dev->data->dev_link = dev_link;
728 * DPDK callback to get flow control status.
731 * Pointer to Ethernet device structure.
732 * @param[out] fc_conf
733 * Flow control output buffer.
736 * 0 on success, negative errno value otherwise and rte_errno is set.
739 mlx4_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
741 struct priv *priv = dev->data->dev_private;
743 struct ethtool_pauseparam ethpause = {
744 .cmd = ETHTOOL_GPAUSEPARAM,
748 ifr.ifr_data = (void *)ðpause;
749 if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
751 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
753 strerror(rte_errno));
756 fc_conf->autoneg = ethpause.autoneg;
757 if (ethpause.rx_pause && ethpause.tx_pause)
758 fc_conf->mode = RTE_FC_FULL;
759 else if (ethpause.rx_pause)
760 fc_conf->mode = RTE_FC_RX_PAUSE;
761 else if (ethpause.tx_pause)
762 fc_conf->mode = RTE_FC_TX_PAUSE;
764 fc_conf->mode = RTE_FC_NONE;
772 * DPDK callback to modify flow control parameters.
775 * Pointer to Ethernet device structure.
777 * Flow control parameters.
780 * 0 on success, negative errno value otherwise and rte_errno is set.
783 mlx4_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
785 struct priv *priv = dev->data->dev_private;
787 struct ethtool_pauseparam ethpause = {
788 .cmd = ETHTOOL_SPAUSEPARAM,
792 ifr.ifr_data = (void *)ðpause;
793 ethpause.autoneg = fc_conf->autoneg;
794 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
795 (fc_conf->mode & RTE_FC_RX_PAUSE))
796 ethpause.rx_pause = 1;
798 ethpause.rx_pause = 0;
799 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
800 (fc_conf->mode & RTE_FC_TX_PAUSE))
801 ethpause.tx_pause = 1;
803 ethpause.tx_pause = 0;
804 if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
806 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
808 strerror(rte_errno));
818 * DPDK callback to retrieve the received packet types that are recognized
822 * Pointer to Ethernet device structure.
825 * Pointer to an array of recognized packet types if in Rx burst mode,
829 mlx4_dev_supported_ptypes_get(struct rte_eth_dev *dev)
831 static const uint32_t ptypes[] = {
832 /* refers to rxq_cq_to_pkt_type() */
834 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
835 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
841 static const uint32_t ptypes_l2tun[] = {
842 /* refers to rxq_cq_to_pkt_type() */
844 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
845 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
849 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
850 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
853 struct priv *priv = dev->data->dev_private;
855 if (dev->rx_pkt_burst == mlx4_rx_burst) {
856 if (priv->hw_csum_l2tun)
865 * Check if mlx4 device was removed.
868 * Pointer to Ethernet device structure.
871 * 1 when device is removed, otherwise 0.
874 mlx4_is_removed(struct rte_eth_dev *dev)
876 struct ibv_device_attr device_attr;
877 struct priv *priv = dev->data->dev_private;
879 if (mlx4_glue->query_device(priv->ctx, &device_attr) == EIO)