1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2012 6WIND S.A.
3 * Copyright 2012 Mellanox Technologies, Ltd
8 * mlx4 driver initialization.
22 /* Verbs headers do not support -pedantic. */
24 #pragma GCC diagnostic ignored "-Wpedantic"
26 #include <infiniband/verbs.h>
28 #pragma GCC diagnostic error "-Wpedantic"
31 #include <rte_common.h>
32 #include <rte_config.h>
34 #include <rte_errno.h>
35 #include <rte_ethdev_driver.h>
36 #include <rte_ethdev_pci.h>
37 #include <rte_ether.h>
39 #include <rte_interrupts.h>
40 #include <rte_kvargs.h>
41 #include <rte_malloc.h>
45 #include "mlx4_glue.h"
46 #include "mlx4_flow.h"
47 #include "mlx4_rxtx.h"
48 #include "mlx4_utils.h"
50 /** Configuration structure for device arguments. */
53 uint32_t present; /**< Bit-field for existing ports. */
54 uint32_t enabled; /**< Bit-field for user-enabled ports. */
58 /* Available parameters list. */
59 const char *pmd_mlx4_init_params[] = {
64 static void mlx4_dev_stop(struct rte_eth_dev *dev);
67 * DPDK callback for Ethernet device configuration.
70 * Pointer to Ethernet device structure.
73 * 0 on success, negative errno value otherwise and rte_errno is set.
76 mlx4_dev_configure(struct rte_eth_dev *dev)
78 struct priv *priv = dev->data->dev_private;
79 struct rte_flow_error error;
82 /* Prepare internal flow rules. */
83 ret = mlx4_flow_sync(priv, &error);
85 ERROR("cannot set up internal flow rules (code %d, \"%s\"),"
86 " flow error type %d, cause %p, message: %s",
87 -ret, strerror(-ret), error.type, error.cause,
88 error.message ? error.message : "(unspecified)");
91 ret = mlx4_intr_install(priv);
93 ERROR("%p: interrupt handler installation failed",
100 * DPDK callback to start the device.
102 * Simulate device start by initializing common RSS resources and attaching
103 * all configured flows.
106 * Pointer to Ethernet device structure.
109 * 0 on success, negative errno value otherwise and rte_errno is set.
112 mlx4_dev_start(struct rte_eth_dev *dev)
114 struct priv *priv = dev->data->dev_private;
115 struct rte_flow_error error;
120 DEBUG("%p: attaching configured flows to all RX queues", (void *)dev);
122 ret = mlx4_rss_init(priv);
124 ERROR("%p: cannot initialize RSS resources: %s",
125 (void *)dev, strerror(-ret));
128 ret = mlx4_rxq_intr_enable(priv);
130 ERROR("%p: interrupt handler installation failed",
134 ret = mlx4_flow_sync(priv, &error);
136 ERROR("%p: cannot attach flow rules (code %d, \"%s\"),"
137 " flow error type %d, cause %p, message: %s",
139 -ret, strerror(-ret), error.type, error.cause,
140 error.message ? error.message : "(unspecified)");
144 dev->tx_pkt_burst = mlx4_tx_burst;
145 dev->rx_pkt_burst = mlx4_rx_burst;
153 * DPDK callback to stop the device.
155 * Simulate device stop by detaching all configured flows.
158 * Pointer to Ethernet device structure.
161 mlx4_dev_stop(struct rte_eth_dev *dev)
163 struct priv *priv = dev->data->dev_private;
167 DEBUG("%p: detaching flows from all RX queues", (void *)dev);
169 dev->tx_pkt_burst = mlx4_tx_burst_removed;
170 dev->rx_pkt_burst = mlx4_rx_burst_removed;
172 mlx4_flow_sync(priv, NULL);
173 mlx4_rxq_intr_disable(priv);
174 mlx4_rss_deinit(priv);
178 * DPDK callback to close the device.
180 * Destroy all queues and objects, free memory.
183 * Pointer to Ethernet device structure.
186 mlx4_dev_close(struct rte_eth_dev *dev)
188 struct priv *priv = dev->data->dev_private;
191 DEBUG("%p: closing device \"%s\"",
193 ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
194 dev->rx_pkt_burst = mlx4_rx_burst_removed;
195 dev->tx_pkt_burst = mlx4_tx_burst_removed;
197 mlx4_flow_clean(priv);
198 mlx4_rss_deinit(priv);
199 for (i = 0; i != dev->data->nb_rx_queues; ++i)
200 mlx4_rx_queue_release(dev->data->rx_queues[i]);
201 for (i = 0; i != dev->data->nb_tx_queues; ++i)
202 mlx4_tx_queue_release(dev->data->tx_queues[i]);
203 if (priv->pd != NULL) {
204 assert(priv->ctx != NULL);
205 claim_zero(mlx4_glue->dealloc_pd(priv->pd));
206 claim_zero(mlx4_glue->close_device(priv->ctx));
208 assert(priv->ctx == NULL);
209 mlx4_intr_uninstall(priv);
210 memset(priv, 0, sizeof(*priv));
213 static const struct eth_dev_ops mlx4_dev_ops = {
214 .dev_configure = mlx4_dev_configure,
215 .dev_start = mlx4_dev_start,
216 .dev_stop = mlx4_dev_stop,
217 .dev_set_link_down = mlx4_dev_set_link_down,
218 .dev_set_link_up = mlx4_dev_set_link_up,
219 .dev_close = mlx4_dev_close,
220 .link_update = mlx4_link_update,
221 .promiscuous_enable = mlx4_promiscuous_enable,
222 .promiscuous_disable = mlx4_promiscuous_disable,
223 .allmulticast_enable = mlx4_allmulticast_enable,
224 .allmulticast_disable = mlx4_allmulticast_disable,
225 .mac_addr_remove = mlx4_mac_addr_remove,
226 .mac_addr_add = mlx4_mac_addr_add,
227 .mac_addr_set = mlx4_mac_addr_set,
228 .stats_get = mlx4_stats_get,
229 .stats_reset = mlx4_stats_reset,
230 .dev_infos_get = mlx4_dev_infos_get,
231 .dev_supported_ptypes_get = mlx4_dev_supported_ptypes_get,
232 .vlan_filter_set = mlx4_vlan_filter_set,
233 .rx_queue_setup = mlx4_rx_queue_setup,
234 .tx_queue_setup = mlx4_tx_queue_setup,
235 .rx_queue_release = mlx4_rx_queue_release,
236 .tx_queue_release = mlx4_tx_queue_release,
237 .flow_ctrl_get = mlx4_flow_ctrl_get,
238 .flow_ctrl_set = mlx4_flow_ctrl_set,
239 .mtu_set = mlx4_mtu_set,
240 .filter_ctrl = mlx4_filter_ctrl,
241 .rx_queue_intr_enable = mlx4_rx_intr_enable,
242 .rx_queue_intr_disable = mlx4_rx_intr_disable,
243 .is_removed = mlx4_is_removed,
247 * Get PCI information from struct ibv_device.
250 * Pointer to Ethernet device structure.
251 * @param[out] pci_addr
252 * PCI bus address output buffer.
255 * 0 on success, negative errno value otherwise and rte_errno is set.
258 mlx4_ibv_device_to_pci_addr(const struct ibv_device *device,
259 struct rte_pci_addr *pci_addr)
263 MKSTR(path, "%s/device/uevent", device->ibdev_path);
265 file = fopen(path, "rb");
270 while (fgets(line, sizeof(line), file) == line) {
271 size_t len = strlen(line);
274 /* Truncate long lines. */
275 if (len == (sizeof(line) - 1))
276 while (line[(len - 1)] != '\n') {
280 line[(len - 1)] = ret;
282 /* Extract information. */
285 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
289 &pci_addr->function) == 4) {
299 * Verify and store value for device argument.
302 * Key argument to verify.
304 * Value associated with key.
305 * @param[in, out] conf
306 * Shared configuration data.
309 * 0 on success, negative errno value otherwise and rte_errno is set.
312 mlx4_arg_parse(const char *key, const char *val, struct mlx4_conf *conf)
317 tmp = strtoul(val, NULL, 0);
320 WARN("%s: \"%s\" is not a valid integer", key, val);
323 if (strcmp(MLX4_PMD_PORT_KVARG, key) == 0) {
324 uint32_t ports = rte_log2_u32(conf->ports.present + 1);
327 ERROR("port index %lu outside range [0,%" PRIu32 ")",
331 if (!(conf->ports.present & (1 << tmp))) {
333 ERROR("invalid port index %lu", tmp);
336 conf->ports.enabled |= 1 << tmp;
339 WARN("%s: unknown parameter", key);
346 * Parse device parameters.
349 * Device arguments structure.
352 * 0 on success, negative errno value otherwise and rte_errno is set.
355 mlx4_args(struct rte_devargs *devargs, struct mlx4_conf *conf)
357 struct rte_kvargs *kvlist;
358 unsigned int arg_count;
364 kvlist = rte_kvargs_parse(devargs->args, pmd_mlx4_init_params);
365 if (kvlist == NULL) {
367 ERROR("failed to parse kvargs");
370 /* Process parameters. */
371 for (i = 0; pmd_mlx4_init_params[i]; ++i) {
372 arg_count = rte_kvargs_count(kvlist, MLX4_PMD_PORT_KVARG);
373 while (arg_count-- > 0) {
374 ret = rte_kvargs_process(kvlist,
376 (int (*)(const char *,
386 rte_kvargs_free(kvlist);
391 * Interpret RSS capabilities reported by device.
393 * This function returns the set of usable Verbs RSS hash fields, kernel
394 * quirks taken into account.
399 * Verbs protection domain.
400 * @param device_attr_ex
401 * Extended device attributes to interpret.
404 * Usable RSS hash fields mask in Verbs format.
407 mlx4_hw_rss_sup(struct ibv_context *ctx, struct ibv_pd *pd,
408 struct ibv_device_attr_ex *device_attr_ex)
410 uint64_t hw_rss_sup = device_attr_ex->rss_caps.rx_hash_fields_mask;
411 struct ibv_cq *cq = NULL;
412 struct ibv_wq *wq = NULL;
413 struct ibv_rwq_ind_table *ind = NULL;
414 struct ibv_qp *qp = NULL;
417 WARN("no RSS capabilities reported; disabling support for UDP"
418 " RSS and inner VXLAN RSS");
419 return IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4 |
420 IBV_RX_HASH_SRC_IPV6 | IBV_RX_HASH_DST_IPV6 |
421 IBV_RX_HASH_SRC_PORT_TCP | IBV_RX_HASH_DST_PORT_TCP;
423 if (!(hw_rss_sup & IBV_RX_HASH_INNER))
426 * Although reported as supported, missing code in some Linux
427 * versions (v4.15, v4.16) prevents the creation of hash QPs with
430 * There is no choice but to attempt to instantiate a temporary RSS
431 * context in order to confirm its support.
433 cq = mlx4_glue->create_cq(ctx, 1, NULL, NULL, 0);
434 wq = cq ? mlx4_glue->create_wq
436 &(struct ibv_wq_init_attr){
437 .wq_type = IBV_WQT_RQ,
443 ind = wq ? mlx4_glue->create_rwq_ind_table
445 &(struct ibv_rwq_ind_table_init_attr){
446 .log_ind_tbl_size = 0,
450 qp = ind ? mlx4_glue->create_qp_ex
452 &(struct ibv_qp_init_attr_ex){
454 (IBV_QP_INIT_ATTR_PD |
455 IBV_QP_INIT_ATTR_RX_HASH |
456 IBV_QP_INIT_ATTR_IND_TABLE),
457 .qp_type = IBV_QPT_RAW_PACKET,
461 .rx_hash_function = IBV_RX_HASH_FUNC_TOEPLITZ,
462 .rx_hash_key_len = MLX4_RSS_HASH_KEY_SIZE,
463 .rx_hash_key = mlx4_rss_hash_key_default,
464 .rx_hash_fields_mask = hw_rss_sup,
468 WARN("disabling unusable inner RSS capability due to kernel"
470 hw_rss_sup &= ~IBV_RX_HASH_INNER;
472 claim_zero(mlx4_glue->destroy_qp(qp));
475 claim_zero(mlx4_glue->destroy_rwq_ind_table(ind));
477 claim_zero(mlx4_glue->destroy_wq(wq));
479 claim_zero(mlx4_glue->destroy_cq(cq));
483 static struct rte_pci_driver mlx4_driver;
486 * DPDK callback to register a PCI device.
488 * This function creates an Ethernet device for each port of a given
492 * PCI driver structure (mlx4_driver).
494 * PCI device information.
497 * 0 on success, negative errno value otherwise and rte_errno is set.
500 mlx4_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
502 struct ibv_device **list;
503 struct ibv_device *ibv_dev;
505 struct ibv_context *attr_ctx = NULL;
506 struct ibv_device_attr device_attr;
507 struct ibv_device_attr_ex device_attr_ex;
508 struct mlx4_conf conf = {
515 assert(pci_drv == &mlx4_driver);
516 list = mlx4_glue->get_device_list(&i);
520 if (rte_errno == ENOSYS)
521 ERROR("cannot list devices, is ib_uverbs loaded?");
526 * For each listed device, check related sysfs entry against
527 * the provided PCI ID.
530 struct rte_pci_addr pci_addr;
533 DEBUG("checking device \"%s\"", list[i]->name);
534 if (mlx4_ibv_device_to_pci_addr(list[i], &pci_addr))
536 if ((pci_dev->addr.domain != pci_addr.domain) ||
537 (pci_dev->addr.bus != pci_addr.bus) ||
538 (pci_dev->addr.devid != pci_addr.devid) ||
539 (pci_dev->addr.function != pci_addr.function))
541 vf = (pci_dev->id.device_id ==
542 PCI_DEVICE_ID_MELLANOX_CONNECTX3VF);
543 INFO("PCI information matches, using device \"%s\" (VF: %s)",
544 list[i]->name, (vf ? "true" : "false"));
545 attr_ctx = mlx4_glue->open_device(list[i]);
549 if (attr_ctx == NULL) {
550 mlx4_glue->free_device_list(list);
554 ERROR("cannot access device, is mlx4_ib loaded?");
558 ERROR("cannot use device, are drivers up to date?");
566 DEBUG("device opened");
567 if (mlx4_glue->query_device(attr_ctx, &device_attr)) {
571 INFO("%u port(s) detected", device_attr.phys_port_cnt);
572 conf.ports.present |= (UINT64_C(1) << device_attr.phys_port_cnt) - 1;
573 if (mlx4_args(pci_dev->device.devargs, &conf)) {
574 ERROR("failed to process device arguments");
578 /* Use all ports when none are defined */
579 if (!conf.ports.enabled)
580 conf.ports.enabled = conf.ports.present;
581 /* Retrieve extended device attributes. */
582 if (mlx4_glue->query_device_ex(attr_ctx, NULL, &device_attr_ex)) {
586 assert(device_attr.max_sge >= MLX4_MAX_SGE);
587 for (i = 0; i < device_attr.phys_port_cnt; i++) {
588 uint32_t port = i + 1; /* ports are indexed from one */
589 struct ibv_context *ctx = NULL;
590 struct ibv_port_attr port_attr;
591 struct ibv_pd *pd = NULL;
592 struct priv *priv = NULL;
593 struct rte_eth_dev *eth_dev = NULL;
594 struct ether_addr mac;
596 /* If port is not enabled, skip. */
597 if (!(conf.ports.enabled & (1 << i)))
599 DEBUG("using port %u", port);
600 ctx = mlx4_glue->open_device(ibv_dev);
605 /* Check port status. */
606 err = mlx4_glue->query_port(ctx, port, &port_attr);
609 ERROR("port query failed: %s", strerror(rte_errno));
612 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
614 ERROR("port %d is not configured in Ethernet mode",
618 if (port_attr.state != IBV_PORT_ACTIVE)
619 DEBUG("port %d is not active: \"%s\" (%d)",
620 port, mlx4_glue->port_state_str(port_attr.state),
622 /* Make asynchronous FD non-blocking to handle interrupts. */
623 if (mlx4_fd_set_non_blocking(ctx->async_fd) < 0) {
624 ERROR("cannot make asynchronous FD non-blocking: %s",
625 strerror(rte_errno));
628 /* Allocate protection domain. */
629 pd = mlx4_glue->alloc_pd(ctx);
632 ERROR("PD allocation failure");
635 /* from rte_ethdev.c */
636 priv = rte_zmalloc("ethdev private structure",
638 RTE_CACHE_LINE_SIZE);
641 ERROR("priv allocation failure");
645 priv->device_attr = device_attr;
648 priv->mtu = ETHER_MTU;
650 priv->hw_csum = !!(device_attr.device_cap_flags &
651 IBV_DEVICE_RAW_IP_CSUM);
652 DEBUG("checksum offloading is %ssupported",
653 (priv->hw_csum ? "" : "not "));
654 /* Only ConnectX-3 Pro supports tunneling. */
655 priv->hw_csum_l2tun =
657 (device_attr.vendor_part_id ==
658 PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO);
659 DEBUG("L2 tunnel checksum offloads are %ssupported",
660 priv->hw_csum_l2tun ? "" : "not ");
661 priv->hw_rss_sup = mlx4_hw_rss_sup(priv->ctx, priv->pd,
663 DEBUG("supported RSS hash fields mask: %016" PRIx64,
665 priv->hw_fcs_strip = !!(device_attr_ex.raw_packet_caps &
666 IBV_RAW_PACKET_CAP_SCATTER_FCS);
667 DEBUG("FCS stripping toggling is %ssupported",
668 priv->hw_fcs_strip ? "" : "not ");
669 /* Configure the first MAC address by default. */
670 if (mlx4_get_mac(priv, &mac.addr_bytes)) {
671 ERROR("cannot get MAC address, is mlx4_en loaded?"
672 " (rte_errno: %s)", strerror(rte_errno));
675 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
677 mac.addr_bytes[0], mac.addr_bytes[1],
678 mac.addr_bytes[2], mac.addr_bytes[3],
679 mac.addr_bytes[4], mac.addr_bytes[5]);
680 /* Register MAC address. */
684 char ifname[IF_NAMESIZE];
686 if (mlx4_get_ifname(priv, &ifname) == 0)
687 DEBUG("port %u ifname is \"%s\"",
690 DEBUG("port %u ifname is unknown", priv->port);
693 /* Get actual MTU if possible. */
694 mlx4_mtu_get(priv, &priv->mtu);
695 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
696 /* from rte_ethdev.c */
698 char name[RTE_ETH_NAME_MAX_LEN];
700 snprintf(name, sizeof(name), "%s port %u",
701 mlx4_glue->get_device_name(ibv_dev), port);
702 eth_dev = rte_eth_dev_allocate(name);
704 if (eth_dev == NULL) {
705 ERROR("can not allocate rte ethdev");
709 eth_dev->data->dev_private = priv;
710 eth_dev->data->mac_addrs = priv->mac;
711 eth_dev->device = &pci_dev->device;
712 rte_eth_copy_pci_info(eth_dev, pci_dev);
713 eth_dev->device->driver = &mlx4_driver.driver;
714 /* Initialize local interrupt handle for current port. */
715 priv->intr_handle = (struct rte_intr_handle){
717 .type = RTE_INTR_HANDLE_EXT,
720 * Override ethdev interrupt handle pointer with private
721 * handle instead of that of the parent PCI device used by
722 * default. This prevents it from being shared between all
723 * ports of the same PCI device since each of them is
724 * associated its own Verbs context.
726 * Rx interrupts in particular require this as the PMD has
727 * no control over the registration of queue interrupts
728 * besides setting up eth_dev->intr_handle, the rest is
729 * handled by rte_intr_rx_ctl().
731 eth_dev->intr_handle = &priv->intr_handle;
733 eth_dev->dev_ops = &mlx4_dev_ops;
734 /* Bring Ethernet device up. */
735 DEBUG("forcing Ethernet interface up");
736 mlx4_dev_set_link_up(priv->dev);
737 /* Update link status once if waiting for LSC. */
738 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
739 mlx4_link_update(eth_dev, 0);
744 claim_zero(mlx4_glue->dealloc_pd(pd));
746 claim_zero(mlx4_glue->close_device(ctx));
748 rte_eth_dev_release_port(eth_dev);
751 if (i == device_attr.phys_port_cnt)
754 * XXX if something went wrong in the loop above, there is a resource
755 * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
756 * long as the dpdk does not provide a way to deallocate a ethdev and a
757 * way to enumerate the registered ethdevs to free the previous ones.
761 claim_zero(mlx4_glue->close_device(attr_ctx));
763 mlx4_glue->free_device_list(list);
764 assert(rte_errno >= 0);
768 static const struct rte_pci_id mlx4_pci_id_map[] = {
770 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
771 PCI_DEVICE_ID_MELLANOX_CONNECTX3)
774 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
775 PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO)
778 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
779 PCI_DEVICE_ID_MELLANOX_CONNECTX3VF)
786 static struct rte_pci_driver mlx4_driver = {
788 .name = MLX4_DRIVER_NAME
790 .id_table = mlx4_pci_id_map,
791 .probe = mlx4_pci_probe,
792 .drv_flags = RTE_PCI_DRV_INTR_LSC |
793 RTE_PCI_DRV_INTR_RMV,
796 #ifdef RTE_LIBRTE_MLX4_DLOPEN_DEPS
799 * Suffix RTE_EAL_PMD_PATH with "-glue".
801 * This function performs a sanity check on RTE_EAL_PMD_PATH before
802 * suffixing its last component.
805 * Output buffer, should be large enough otherwise NULL is returned.
810 * Pointer to @p buf or @p NULL in case suffix cannot be appended.
813 mlx4_glue_path(char *buf, size_t size)
815 static const char *const bad[] = { "/", ".", "..", NULL };
816 const char *path = RTE_EAL_PMD_PATH;
817 size_t len = strlen(path);
821 while (len && path[len - 1] == '/')
823 for (off = len; off && path[off - 1] != '/'; --off)
825 for (i = 0; bad[i]; ++i)
826 if (!strncmp(path + off, bad[i], (int)(len - off)))
828 i = snprintf(buf, size, "%.*s-glue", (int)len, path);
829 if (i == -1 || (size_t)i >= size)
833 ERROR("unable to append \"-glue\" to last component of"
834 " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\"),"
835 " please re-configure DPDK");
840 * Initialization routine for run-time dependency on rdma-core.
845 char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")];
846 const char *path[] = {
848 * A basic security check is necessary before trusting
849 * MLX4_GLUE_PATH, which may override RTE_EAL_PMD_PATH.
851 (geteuid() == getuid() && getegid() == getgid() ?
852 getenv("MLX4_GLUE_PATH") : NULL),
854 * When RTE_EAL_PMD_PATH is set, use its glue-suffixed
855 * variant, otherwise let dlopen() look up libraries on its
859 mlx4_glue_path(glue_path, sizeof(glue_path)) : ""),
866 while (!handle && i != RTE_DIM(path)) {
875 end = strpbrk(path[i], ":;");
877 end = path[i] + strlen(path[i]);
883 ret = snprintf(name, sizeof(name), "%.*s%s" MLX4_GLUE,
885 (!len || *(end - 1) == '/') ? "" : "/");
888 if (sizeof(name) != (size_t)ret + 1)
890 DEBUG("looking for rdma-core glue as \"%s\"", name);
891 handle = dlopen(name, RTLD_LAZY);
902 WARN("cannot load glue library: %s", dlmsg);
905 sym = dlsym(handle, "mlx4_glue");
910 ERROR("cannot resolve glue symbol: %s", dlmsg);
918 WARN("cannot initialize PMD due to missing run-time"
919 " dependency on rdma-core libraries (libibverbs,"
927 * Driver initialization routine.
929 RTE_INIT(rte_mlx4_pmd_init);
931 rte_mlx4_pmd_init(void)
934 * MLX4_DEVICE_FATAL_CLEANUP tells ibv_destroy functions we
935 * want to get success errno value in case of calling them
936 * when the device was removed.
938 setenv("MLX4_DEVICE_FATAL_CLEANUP", "1", 1);
940 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
941 * huge pages. Calling ibv_fork_init() during init allows
942 * applications to use fork() safely for purposes other than
943 * using this PMD, which is not supported in forked processes.
945 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
946 #ifdef RTE_LIBRTE_MLX4_DLOPEN_DEPS
947 if (mlx4_glue_init())
952 /* Glue structure must not contain any NULL pointers. */
956 for (i = 0; i != sizeof(*mlx4_glue) / sizeof(void *); ++i)
957 assert(((const void *const *)mlx4_glue)[i]);
960 if (strcmp(mlx4_glue->version, MLX4_GLUE_VERSION)) {
961 ERROR("rdma-core glue \"%s\" mismatch: \"%s\" is required",
962 mlx4_glue->version, MLX4_GLUE_VERSION);
965 mlx4_glue->fork_init();
966 rte_pci_register(&mlx4_driver);
969 RTE_PMD_EXPORT_NAME(net_mlx4, __COUNTER__);
970 RTE_PMD_REGISTER_PCI_TABLE(net_mlx4, mlx4_pci_id_map);
971 RTE_PMD_REGISTER_KMOD_DEP(net_mlx4,
972 "* ib_uverbs & mlx4_en & mlx4_core & mlx4_ib");