4 * Copyright 2015 6WIND S.A.
5 * Copyright 2015 Mellanox.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of 6WIND S.A. nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46 #include <sys/ioctl.h>
47 #include <sys/socket.h>
48 #include <sys/utsname.h>
49 #include <netinet/in.h>
50 #include <linux/ethtool.h>
51 #include <linux/sockios.h>
52 #include <linux/version.h>
57 #include <rte_atomic.h>
58 #include <rte_ethdev.h>
60 #include <rte_common.h>
61 #include <rte_interrupts.h>
62 #include <rte_alarm.h>
63 #include <rte_malloc.h>
66 #include "mlx5_rxtx.h"
67 #include "mlx5_utils.h"
69 /* Add defines in case the running kernel is not the same as user headers. */
70 #ifndef ETHTOOL_GLINKSETTINGS
71 struct ethtool_link_settings {
80 uint8_t eth_tp_mdix_ctrl;
81 int8_t link_mode_masks_nwords;
83 uint32_t link_mode_masks[];
86 #define ETHTOOL_GLINKSETTINGS 0x0000004c
87 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
88 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
89 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
90 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
91 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
92 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
93 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
94 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
95 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
96 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
97 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
98 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
99 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
100 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
101 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
102 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
104 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
105 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
106 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
107 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
109 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
110 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
111 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
113 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
114 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
115 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
116 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
117 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
121 * Return private structure associated with an Ethernet device.
124 * Pointer to Ethernet device structure.
127 * Pointer to private structure.
130 mlx5_get_priv(struct rte_eth_dev *dev)
132 return dev->data->dev_private;
136 * Check if running as a secondary process.
139 * Nonzero if running as a secondary process.
142 mlx5_is_secondary(void)
144 return rte_eal_process_type() == RTE_PROC_SECONDARY;
148 * Get interface name from private structure.
151 * Pointer to private structure.
153 * Interface name output buffer.
156 * 0 on success, -1 on failure and errno is set.
159 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
163 unsigned int dev_type = 0;
164 unsigned int dev_port_prev = ~0u;
165 char match[IF_NAMESIZE] = "";
168 MKSTR(path, "%s/device/net", priv->ibdev_path);
174 while ((dent = readdir(dir)) != NULL) {
175 char *name = dent->d_name;
177 unsigned int dev_port;
180 if ((name[0] == '.') &&
181 ((name[1] == '\0') ||
182 ((name[1] == '.') && (name[2] == '\0'))))
185 MKSTR(path, "%s/device/net/%s/%s",
186 priv->ibdev_path, name,
187 (dev_type ? "dev_id" : "dev_port"));
189 file = fopen(path, "rb");
194 * Switch to dev_id when dev_port does not exist as
195 * is the case with Linux kernel versions < 3.15.
206 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
211 * Switch to dev_id when dev_port returns the same value for
212 * all ports. May happen when using a MOFED release older than
213 * 3.0 with a Linux kernel >= 3.15.
215 if (dev_port == dev_port_prev)
217 dev_port_prev = dev_port;
218 if (dev_port == (priv->port - 1u))
219 snprintf(match, sizeof(match), "%s", name);
222 if (match[0] == '\0')
224 strncpy(*ifname, match, sizeof(*ifname));
229 * Check if the counter is located on ib counters file.
235 * 1 if counter is located on ib counters file , 0 otherwise.
238 priv_is_ib_cntr(const char *cntr)
240 if (!strcmp(cntr, "out_of_buffer"))
246 * Read from sysfs entry.
249 * Pointer to private structure.
251 * Entry name relative to sysfs path.
253 * Data output buffer.
258 * 0 on success, -1 on failure and errno is set.
261 priv_sysfs_read(const struct priv *priv, const char *entry,
262 char *buf, size_t size)
264 char ifname[IF_NAMESIZE];
269 if (priv_get_ifname(priv, &ifname))
272 if (priv_is_ib_cntr(entry)) {
273 MKSTR(path, "%s/ports/1/hw_counters/%s",
274 priv->ibdev_path, entry);
275 file = fopen(path, "rb");
277 MKSTR(path, "%s/device/net/%s/%s",
278 priv->ibdev_path, ifname, entry);
279 file = fopen(path, "rb");
283 ret = fread(buf, 1, size, file);
285 if (((size_t)ret < size) && (ferror(file)))
295 * Write to sysfs entry.
298 * Pointer to private structure.
300 * Entry name relative to sysfs path.
307 * 0 on success, -1 on failure and errno is set.
310 priv_sysfs_write(const struct priv *priv, const char *entry,
311 char *buf, size_t size)
313 char ifname[IF_NAMESIZE];
318 if (priv_get_ifname(priv, &ifname))
321 MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry);
323 file = fopen(path, "wb");
326 ret = fwrite(buf, 1, size, file);
328 if (((size_t)ret < size) || (ferror(file)))
338 * Get unsigned long sysfs property.
341 * Pointer to private structure.
343 * Entry name relative to sysfs path.
345 * Value output buffer.
348 * 0 on success, -1 on failure and errno is set.
351 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
354 unsigned long value_ret;
357 ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
359 DEBUG("cannot read %s value from sysfs: %s",
360 name, strerror(errno));
363 value_str[ret] = '\0';
365 value_ret = strtoul(value_str, NULL, 0);
367 DEBUG("invalid %s value `%s': %s", name, value_str,
376 * Set unsigned long sysfs property.
379 * Pointer to private structure.
381 * Entry name relative to sysfs path.
386 * 0 on success, -1 on failure and errno is set.
389 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
392 MKSTR(value_str, "%lu", value);
394 ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
396 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
397 name, value_str, value, strerror(errno));
404 * Perform ifreq ioctl() on associated Ethernet device.
407 * Pointer to private structure.
409 * Request number to pass to ioctl().
411 * Interface request structure output buffer.
414 * 0 on success, -1 on failure and errno is set.
417 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
419 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
424 if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
425 ret = ioctl(sock, req, ifr);
431 * Return the number of active VFs for the current device.
434 * Pointer to private structure.
435 * @param[out] num_vfs
436 * Number of active VFs.
439 * 0 on success, -1 on failure and errno is set.
442 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
444 /* The sysfs entry name depends on the operating system. */
445 const char **name = (const char *[]){
446 "device/sriov_numvfs",
447 "device/mlx5_num_vfs",
453 unsigned long ulong_num_vfs;
455 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
457 *num_vfs = ulong_num_vfs;
458 } while (*(++name) && ret);
466 * Pointer to private structure.
468 * MTU value output buffer.
471 * 0 on success, -1 on failure and errno is set.
474 priv_get_mtu(struct priv *priv, uint16_t *mtu)
476 unsigned long ulong_mtu;
478 if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
485 * Read device counter from sysfs.
488 * Pointer to private structure.
492 * Counter output buffer.
495 * 0 on success, -1 on failure and errno is set.
498 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
500 unsigned long ulong_ctr;
502 if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
512 * Pointer to private structure.
517 * 0 on success, -1 on failure and errno is set.
520 priv_set_mtu(struct priv *priv, uint16_t mtu)
524 if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
525 priv_get_mtu(priv, &new_mtu))
537 * Pointer to private structure.
539 * Bitmask for flags that must remain untouched.
541 * Bitmask for flags to modify.
544 * 0 on success, -1 on failure and errno is set.
547 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
551 if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
554 tmp |= (flags & (~keep));
555 return priv_set_sysfs_ulong(priv, "flags", tmp);
559 * Ethernet device configuration.
561 * Prepare the driver for a given number of TX and RX queues.
564 * Pointer to Ethernet device structure.
567 * 0 on success, errno value on failure.
570 dev_configure(struct rte_eth_dev *dev)
572 struct priv *priv = dev->data->dev_private;
573 unsigned int rxqs_n = dev->data->nb_rx_queues;
574 unsigned int txqs_n = dev->data->nb_tx_queues;
577 unsigned int reta_idx_n;
578 const uint8_t use_app_rss_key =
579 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len;
581 if (use_app_rss_key &&
582 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
583 rss_hash_default_key_len)) {
584 /* MLX5 RSS only support 40bytes key. */
587 priv->rss_conf.rss_key =
588 rte_realloc(priv->rss_conf.rss_key,
589 rss_hash_default_key_len, 0);
590 if (!priv->rss_conf.rss_key) {
591 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n);
594 memcpy(priv->rss_conf.rss_key,
596 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
597 rss_hash_default_key,
598 rss_hash_default_key_len);
599 priv->rss_conf.rss_key_len = rss_hash_default_key_len;
600 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
601 priv->rxqs = (void *)dev->data->rx_queues;
602 priv->txqs = (void *)dev->data->tx_queues;
603 if (txqs_n != priv->txqs_n) {
604 INFO("%p: TX queues number update: %u -> %u",
605 (void *)dev, priv->txqs_n, txqs_n);
606 priv->txqs_n = txqs_n;
608 if (rxqs_n > priv->ind_table_max_size) {
609 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
612 if (rxqs_n == priv->rxqs_n)
614 INFO("%p: RX queues number update: %u -> %u",
615 (void *)dev, priv->rxqs_n, rxqs_n);
616 priv->rxqs_n = rxqs_n;
617 /* If the requested number of RX queues is not a power of two, use the
618 * maximum indirection table size for better balancing.
619 * The result is always rounded to the next power of two. */
620 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
621 priv->ind_table_max_size :
623 if (priv_rss_reta_index_resize(priv, reta_idx_n))
625 /* When the number of RX queues is not a power of two, the remaining
626 * table entries are padded with reused WQs and hashes are not spread
628 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
629 (*priv->reta_idx)[i] = j;
637 * DPDK callback for Ethernet device configuration.
640 * Pointer to Ethernet device structure.
643 * 0 on success, negative errno value on failure.
646 mlx5_dev_configure(struct rte_eth_dev *dev)
648 struct priv *priv = dev->data->dev_private;
651 if (mlx5_is_secondary())
652 return -E_RTE_SECONDARY;
655 ret = dev_configure(dev);
662 * DPDK callback to get information about the device.
665 * Pointer to Ethernet device structure.
667 * Info structure output buffer.
670 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
672 struct priv *priv = mlx5_get_priv(dev);
674 char ifname[IF_NAMESIZE];
676 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
679 /* FIXME: we should ask the device for these values. */
680 info->min_rx_bufsize = 32;
681 info->max_rx_pktlen = 65536;
683 * Since we need one CQ per QP, the limit is the minimum number
684 * between the two values.
686 max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
687 priv->device_attr.orig_attr.max_qp);
688 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
691 info->max_rx_queues = max;
692 info->max_tx_queues = max;
693 info->max_mac_addrs = RTE_DIM(priv->mac);
694 info->rx_offload_capa =
696 (DEV_RX_OFFLOAD_IPV4_CKSUM |
697 DEV_RX_OFFLOAD_UDP_CKSUM |
698 DEV_RX_OFFLOAD_TCP_CKSUM) :
700 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0);
702 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
704 info->tx_offload_capa |=
705 (DEV_TX_OFFLOAD_IPV4_CKSUM |
706 DEV_TX_OFFLOAD_UDP_CKSUM |
707 DEV_TX_OFFLOAD_TCP_CKSUM);
709 info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
711 info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
712 DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
713 DEV_TX_OFFLOAD_GRE_TNL_TSO);
714 if (priv_get_ifname(priv, &ifname) == 0)
715 info->if_index = if_nametoindex(ifname);
716 info->reta_size = priv->reta_idx_n ?
717 priv->reta_idx_n : priv->ind_table_max_size;
718 info->hash_key_size = priv->rss_conf.rss_key_len;
719 info->speed_capa = priv->link_speed_capa;
724 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
726 static const uint32_t ptypes[] = {
727 /* refers to rxq_cq_to_pkt_type() */
729 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
730 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
731 RTE_PTYPE_L4_NONFRAG,
735 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
736 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
737 RTE_PTYPE_INNER_L4_NONFRAG,
738 RTE_PTYPE_INNER_L4_FRAG,
739 RTE_PTYPE_INNER_L4_TCP,
740 RTE_PTYPE_INNER_L4_UDP,
744 if (dev->rx_pkt_burst == mlx5_rx_burst ||
745 dev->rx_pkt_burst == mlx5_rx_burst_vec)
751 * DPDK callback to retrieve physical link information.
754 * Pointer to Ethernet device structure.
755 * @param wait_to_complete
756 * Wait for request completion (ignored).
759 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
761 struct priv *priv = mlx5_get_priv(dev);
762 struct ethtool_cmd edata = {
763 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
766 struct rte_eth_link dev_link;
769 /* priv_lock() is not taken to allow concurrent calls. */
771 (void)wait_to_complete;
772 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
773 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
776 memset(&dev_link, 0, sizeof(dev_link));
777 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
778 (ifr.ifr_flags & IFF_RUNNING));
779 ifr.ifr_data = (void *)&edata;
780 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
781 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
785 link_speed = ethtool_cmd_speed(&edata);
786 if (link_speed == -1)
787 dev_link.link_speed = 0;
789 dev_link.link_speed = link_speed;
790 priv->link_speed_capa = 0;
791 if (edata.supported & SUPPORTED_Autoneg)
792 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
793 if (edata.supported & (SUPPORTED_1000baseT_Full |
794 SUPPORTED_1000baseKX_Full))
795 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
796 if (edata.supported & SUPPORTED_10000baseKR_Full)
797 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
798 if (edata.supported & (SUPPORTED_40000baseKR4_Full |
799 SUPPORTED_40000baseCR4_Full |
800 SUPPORTED_40000baseSR4_Full |
801 SUPPORTED_40000baseLR4_Full))
802 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
803 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
804 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
805 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
806 ETH_LINK_SPEED_FIXED);
807 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
808 /* Link status changed. */
809 dev->data->dev_link = dev_link;
812 /* Link status is still the same. */
817 * Retrieve physical link information (unlocked version using new ioctl).
820 * Pointer to Ethernet device structure.
821 * @param wait_to_complete
822 * Wait for request completion (ignored).
825 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
827 struct priv *priv = mlx5_get_priv(dev);
828 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
830 struct rte_eth_link dev_link;
833 (void)wait_to_complete;
834 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
835 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
838 memset(&dev_link, 0, sizeof(dev_link));
839 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
840 (ifr.ifr_flags & IFF_RUNNING));
841 ifr.ifr_data = (void *)&gcmd;
842 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
843 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
847 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
849 alignas(struct ethtool_link_settings)
850 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
851 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
852 struct ethtool_link_settings *ecmd = (void *)data;
855 ifr.ifr_data = (void *)ecmd;
856 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
857 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
861 dev_link.link_speed = ecmd->speed;
862 sc = ecmd->link_mode_masks[0] |
863 ((uint64_t)ecmd->link_mode_masks[1] << 32);
864 priv->link_speed_capa = 0;
865 if (sc & ETHTOOL_LINK_MODE_Autoneg_BIT)
866 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
867 if (sc & (ETHTOOL_LINK_MODE_1000baseT_Full_BIT |
868 ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))
869 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
870 if (sc & (ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT |
871 ETHTOOL_LINK_MODE_10000baseKR_Full_BIT |
872 ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))
873 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
874 if (sc & (ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT |
875 ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))
876 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
877 if (sc & (ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT |
878 ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT |
879 ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT |
880 ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))
881 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
882 if (sc & (ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT |
883 ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT |
884 ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT |
885 ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))
886 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
887 if (sc & (ETHTOOL_LINK_MODE_25000baseCR_Full_BIT |
888 ETHTOOL_LINK_MODE_25000baseKR_Full_BIT |
889 ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))
890 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
891 if (sc & (ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT |
892 ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))
893 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
894 if (sc & (ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT |
895 ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT |
896 ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT |
897 ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))
898 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
899 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
900 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
901 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
902 ETH_LINK_SPEED_FIXED);
903 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
904 /* Link status changed. */
905 dev->data->dev_link = dev_link;
908 /* Link status is still the same. */
913 * DPDK callback to retrieve physical link information.
916 * Pointer to Ethernet device structure.
917 * @param wait_to_complete
918 * Wait for request completion (ignored).
921 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
923 struct utsname utsname;
926 if (uname(&utsname) == -1 ||
927 sscanf(utsname.release, "%d.%d.%d",
928 &ver[0], &ver[1], &ver[2]) != 3 ||
929 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
930 return mlx5_link_update_unlocked_gset(dev, wait_to_complete);
931 return mlx5_link_update_unlocked_gs(dev, wait_to_complete);
935 * DPDK callback to change the MTU.
938 * Pointer to Ethernet device structure.
943 * 0 on success, negative errno value on failure.
946 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
948 struct priv *priv = dev->data->dev_private;
952 if (mlx5_is_secondary())
953 return -E_RTE_SECONDARY;
956 ret = priv_get_mtu(priv, &kern_mtu);
959 /* Set kernel interface MTU first. */
960 ret = priv_set_mtu(priv, mtu);
963 ret = priv_get_mtu(priv, &kern_mtu);
966 if (kern_mtu == mtu) {
968 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
974 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
982 * DPDK callback to get flow control status.
985 * Pointer to Ethernet device structure.
986 * @param[out] fc_conf
987 * Flow control output buffer.
990 * 0 on success, negative errno value on failure.
993 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
995 struct priv *priv = dev->data->dev_private;
997 struct ethtool_pauseparam ethpause = {
998 .cmd = ETHTOOL_GPAUSEPARAM
1002 if (mlx5_is_secondary())
1003 return -E_RTE_SECONDARY;
1005 ifr.ifr_data = (void *)ðpause;
1007 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1009 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
1015 fc_conf->autoneg = ethpause.autoneg;
1016 if (ethpause.rx_pause && ethpause.tx_pause)
1017 fc_conf->mode = RTE_FC_FULL;
1018 else if (ethpause.rx_pause)
1019 fc_conf->mode = RTE_FC_RX_PAUSE;
1020 else if (ethpause.tx_pause)
1021 fc_conf->mode = RTE_FC_TX_PAUSE;
1023 fc_conf->mode = RTE_FC_NONE;
1033 * DPDK callback to modify flow control parameters.
1036 * Pointer to Ethernet device structure.
1037 * @param[in] fc_conf
1038 * Flow control parameters.
1041 * 0 on success, negative errno value on failure.
1044 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1046 struct priv *priv = dev->data->dev_private;
1048 struct ethtool_pauseparam ethpause = {
1049 .cmd = ETHTOOL_SPAUSEPARAM
1053 if (mlx5_is_secondary())
1054 return -E_RTE_SECONDARY;
1056 ifr.ifr_data = (void *)ðpause;
1057 ethpause.autoneg = fc_conf->autoneg;
1058 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1059 (fc_conf->mode & RTE_FC_RX_PAUSE))
1060 ethpause.rx_pause = 1;
1062 ethpause.rx_pause = 0;
1064 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1065 (fc_conf->mode & RTE_FC_TX_PAUSE))
1066 ethpause.tx_pause = 1;
1068 ethpause.tx_pause = 0;
1071 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1073 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1087 * Get PCI information from struct ibv_device.
1090 * Pointer to Ethernet device structure.
1091 * @param[out] pci_addr
1092 * PCI bus address output buffer.
1095 * 0 on success, -1 on failure and errno is set.
1098 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1099 struct rte_pci_addr *pci_addr)
1103 MKSTR(path, "%s/device/uevent", device->ibdev_path);
1105 file = fopen(path, "rb");
1108 while (fgets(line, sizeof(line), file) == line) {
1109 size_t len = strlen(line);
1112 /* Truncate long lines. */
1113 if (len == (sizeof(line) - 1))
1114 while (line[(len - 1)] != '\n') {
1118 line[(len - 1)] = ret;
1120 /* Extract information. */
1123 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1127 &pci_addr->function) == 4) {
1137 * Update the link status.
1140 * Pointer to private structure.
1143 * Zero if the callback process can be called immediately.
1146 priv_link_status_update(struct priv *priv)
1148 struct rte_eth_link *link = &priv->dev->data->dev_link;
1150 mlx5_link_update(priv->dev, 0);
1151 if (((link->link_speed == 0) && link->link_status) ||
1152 ((link->link_speed != 0) && !link->link_status)) {
1154 * Inconsistent status. Event likely occurred before the
1155 * kernel netdevice exposes the new status.
1157 if (!priv->pending_alarm) {
1158 priv->pending_alarm = 1;
1159 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
1160 mlx5_dev_link_status_handler,
1164 } else if (unlikely(priv->pending_alarm)) {
1165 /* Link interrupt occurred while alarm is already scheduled. */
1166 priv->pending_alarm = 0;
1167 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
1173 * Device status handler.
1176 * Pointer to private structure.
1178 * Pointer to event flags holder.
1181 * Events bitmap of callback process which can be called immediately.
1184 priv_dev_status_handler(struct priv *priv)
1186 struct ibv_async_event event;
1189 /* Read all message and acknowledge them. */
1191 if (ibv_get_async_event(priv->ctx, &event))
1193 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1194 event.event_type == IBV_EVENT_PORT_ERR) &&
1195 (priv->dev->data->dev_conf.intr_conf.lsc == 1))
1196 ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
1197 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1198 priv->dev->data->dev_conf.intr_conf.rmv == 1)
1199 ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
1201 DEBUG("event type %d on port %d not handled",
1202 event.event_type, event.element.port_num);
1203 ibv_ack_async_event(&event);
1205 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1206 if (priv_link_status_update(priv))
1207 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1212 * Handle delayed link status event.
1215 * Registered argument.
1218 mlx5_dev_link_status_handler(void *arg)
1220 struct rte_eth_dev *dev = arg;
1221 struct priv *priv = dev->data->dev_private;
1225 assert(priv->pending_alarm == 1);
1226 priv->pending_alarm = 0;
1227 ret = priv_link_status_update(priv);
1230 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
1235 * Handle interrupts from the NIC.
1237 * @param[in] intr_handle
1238 * Interrupt handler.
1240 * Callback argument.
1243 mlx5_dev_interrupt_handler(void *cb_arg)
1245 struct rte_eth_dev *dev = cb_arg;
1246 struct priv *priv = dev->data->dev_private;
1250 events = priv_dev_status_handler(priv);
1252 if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1253 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
1255 if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1256 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL,
1261 * Handle interrupts from the socket.
1264 * Callback argument.
1267 mlx5_dev_handler_socket(void *cb_arg)
1269 struct rte_eth_dev *dev = cb_arg;
1270 struct priv *priv = dev->data->dev_private;
1273 priv_socket_handle(priv);
1278 * Uninstall interrupt handler.
1281 * Pointer to private structure.
1283 * Pointer to the rte_eth_dev structure.
1286 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1288 if (dev->data->dev_conf.intr_conf.lsc ||
1289 dev->data->dev_conf.intr_conf.rmv)
1290 rte_intr_callback_unregister(&priv->intr_handle,
1291 mlx5_dev_interrupt_handler, dev);
1292 if (priv->primary_socket)
1293 rte_intr_callback_unregister(&priv->intr_handle_socket,
1294 mlx5_dev_handler_socket, dev);
1295 if (priv->pending_alarm)
1296 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1297 priv->pending_alarm = 0;
1298 priv->intr_handle.fd = 0;
1299 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1300 priv->intr_handle_socket.fd = 0;
1301 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1305 * Install interrupt handler.
1308 * Pointer to private structure.
1310 * Pointer to the rte_eth_dev structure.
1313 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1317 assert(!mlx5_is_secondary());
1318 assert(priv->ctx->async_fd > 0);
1319 flags = fcntl(priv->ctx->async_fd, F_GETFL);
1320 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1322 INFO("failed to change file descriptor async event queue");
1323 dev->data->dev_conf.intr_conf.lsc = 0;
1324 dev->data->dev_conf.intr_conf.rmv = 0;
1326 if (dev->data->dev_conf.intr_conf.lsc ||
1327 dev->data->dev_conf.intr_conf.rmv) {
1328 priv->intr_handle.fd = priv->ctx->async_fd;
1329 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1330 rte_intr_callback_register(&priv->intr_handle,
1331 mlx5_dev_interrupt_handler, dev);
1334 rc = priv_socket_init(priv);
1335 if (!rc && priv->primary_socket) {
1336 priv->intr_handle_socket.fd = priv->primary_socket;
1337 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1338 rte_intr_callback_register(&priv->intr_handle_socket,
1339 mlx5_dev_handler_socket, dev);
1344 * Change the link state (UP / DOWN).
1347 * Pointer to private data structure.
1349 * Pointer to rte_eth_dev structure.
1351 * Nonzero for link up, otherwise link down.
1354 * 0 on success, errno value on failure.
1357 priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up)
1362 err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
1365 priv_dev_select_tx_function(priv, dev);
1366 priv_dev_select_rx_function(priv, dev);
1368 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
1371 dev->rx_pkt_burst = removed_rx_burst;
1372 dev->tx_pkt_burst = removed_tx_burst;
1378 * DPDK callback to bring the link DOWN.
1381 * Pointer to Ethernet device structure.
1384 * 0 on success, errno value on failure.
1387 mlx5_set_link_down(struct rte_eth_dev *dev)
1389 struct priv *priv = dev->data->dev_private;
1393 err = priv_dev_set_link(priv, dev, 0);
1399 * DPDK callback to bring the link UP.
1402 * Pointer to Ethernet device structure.
1405 * 0 on success, errno value on failure.
1408 mlx5_set_link_up(struct rte_eth_dev *dev)
1410 struct priv *priv = dev->data->dev_private;
1414 err = priv_dev_set_link(priv, dev, 1);
1420 * Configure the TX function to use.
1423 * Pointer to private data structure.
1425 * Pointer to rte_eth_dev structure.
1428 priv_dev_select_tx_function(struct priv *priv, struct rte_eth_dev *dev)
1430 assert(priv != NULL);
1431 assert(dev != NULL);
1432 dev->tx_pkt_burst = mlx5_tx_burst;
1433 /* Select appropriate TX function. */
1434 if (priv->mps == MLX5_MPW_ENHANCED) {
1435 if (priv_check_vec_tx_support(priv) > 0) {
1436 if (priv_check_raw_vec_tx_support(priv) > 0)
1437 dev->tx_pkt_burst = mlx5_tx_burst_raw_vec;
1439 dev->tx_pkt_burst = mlx5_tx_burst_vec;
1440 DEBUG("selected Enhanced MPW TX vectorized function");
1442 dev->tx_pkt_burst = mlx5_tx_burst_empw;
1443 DEBUG("selected Enhanced MPW TX function");
1445 } else if (priv->mps && priv->txq_inline) {
1446 dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1447 DEBUG("selected MPW inline TX function");
1448 } else if (priv->mps) {
1449 dev->tx_pkt_burst = mlx5_tx_burst_mpw;
1450 DEBUG("selected MPW TX function");
1455 * Configure the RX function to use.
1458 * Pointer to private data structure.
1460 * Pointer to rte_eth_dev structure.
1463 priv_dev_select_rx_function(struct priv *priv, struct rte_eth_dev *dev)
1465 assert(priv != NULL);
1466 assert(dev != NULL);
1467 if (priv_check_vec_rx_support(priv) > 0) {
1468 dev->rx_pkt_burst = mlx5_rx_burst_vec;
1469 DEBUG("selected RX vectorized function");
1471 dev->rx_pkt_burst = mlx5_rx_burst;