1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox Technologies, Ltd
16 #include <linux/rtnetlink.h>
19 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
21 #pragma GCC diagnostic ignored "-Wpedantic"
23 #include <infiniband/verbs.h>
25 #pragma GCC diagnostic error "-Wpedantic"
28 #include <rte_malloc.h>
29 #include <rte_ethdev_driver.h>
30 #include <rte_ethdev_pci.h>
32 #include <rte_bus_pci.h>
33 #include <rte_common.h>
34 #include <rte_config.h>
35 #include <rte_eal_memconfig.h>
36 #include <rte_kvargs.h>
37 #include <rte_rwlock.h>
38 #include <rte_spinlock.h>
39 #include <rte_string_fns.h>
42 #include "mlx5_utils.h"
43 #include "mlx5_rxtx.h"
44 #include "mlx5_autoconf.h"
45 #include "mlx5_defs.h"
46 #include "mlx5_glue.h"
48 #include "mlx5_flow.h"
50 /* Device parameter to enable RX completion queue compression. */
51 #define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en"
53 /* Device parameter to enable RX completion entry padding to 128B. */
54 #define MLX5_RXQ_CQE_PAD_EN "rxq_cqe_pad_en"
56 /* Device parameter to enable padding Rx packet to cacheline size. */
57 #define MLX5_RXQ_PKT_PAD_EN "rxq_pkt_pad_en"
59 /* Device parameter to enable Multi-Packet Rx queue. */
60 #define MLX5_RX_MPRQ_EN "mprq_en"
62 /* Device parameter to configure log 2 of the number of strides for MPRQ. */
63 #define MLX5_RX_MPRQ_LOG_STRIDE_NUM "mprq_log_stride_num"
65 /* Device parameter to limit the size of memcpy'd packet for MPRQ. */
66 #define MLX5_RX_MPRQ_MAX_MEMCPY_LEN "mprq_max_memcpy_len"
68 /* Device parameter to set the minimum number of Rx queues to enable MPRQ. */
69 #define MLX5_RXQS_MIN_MPRQ "rxqs_min_mprq"
71 /* Device parameter to configure inline send. */
72 #define MLX5_TXQ_INLINE "txq_inline"
75 * Device parameter to configure the number of TX queues threshold for
76 * enabling inline send.
78 #define MLX5_TXQS_MIN_INLINE "txqs_min_inline"
81 * Device parameter to configure the number of TX queues threshold for
82 * enabling vectorized Tx.
84 #define MLX5_TXQS_MAX_VEC "txqs_max_vec"
86 /* Device parameter to enable multi-packet send WQEs. */
87 #define MLX5_TXQ_MPW_EN "txq_mpw_en"
89 /* Device parameter to include 2 dsegs in the title WQEBB. */
90 #define MLX5_TXQ_MPW_HDR_DSEG_EN "txq_mpw_hdr_dseg_en"
92 /* Device parameter to limit the size of inlining packet. */
93 #define MLX5_TXQ_MAX_INLINE_LEN "txq_max_inline_len"
95 /* Device parameter to enable hardware Tx vector. */
96 #define MLX5_TX_VEC_EN "tx_vec_en"
98 /* Device parameter to enable hardware Rx vector. */
99 #define MLX5_RX_VEC_EN "rx_vec_en"
101 /* Allow L3 VXLAN flow creation. */
102 #define MLX5_L3_VXLAN_EN "l3_vxlan_en"
104 /* Activate DV flow steering. */
105 #define MLX5_DV_FLOW_EN "dv_flow_en"
107 /* Activate Netlink support in VF mode. */
108 #define MLX5_VF_NL_EN "vf_nl_en"
110 /* Enable extending memsegs when creating a MR. */
111 #define MLX5_MR_EXT_MEMSEG_EN "mr_ext_memseg_en"
113 /* Select port representors to instantiate. */
114 #define MLX5_REPRESENTOR "representor"
116 #ifndef HAVE_IBV_MLX5_MOD_MPW
117 #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2)
118 #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3)
121 #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP
122 #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4)
125 static const char *MZ_MLX5_PMD_SHARED_DATA = "mlx5_pmd_shared_data";
127 /* Shared memory between primary and secondary processes. */
128 struct mlx5_shared_data *mlx5_shared_data;
130 /* Spinlock for mlx5_shared_data allocation. */
131 static rte_spinlock_t mlx5_shared_data_lock = RTE_SPINLOCK_INITIALIZER;
133 /* Process local data for secondary processes. */
134 static struct mlx5_local_data mlx5_local_data;
136 /** Driver-specific log messages type. */
139 /** Data associated with devices to spawn. */
140 struct mlx5_dev_spawn_data {
141 uint32_t ifindex; /**< Network interface index. */
142 uint32_t max_port; /**< IB device maximal port index. */
143 uint32_t ibv_port; /**< IB device physical port index. */
144 struct mlx5_switch_info info; /**< Switch information. */
145 struct ibv_device *ibv_dev; /**< Associated IB device. */
146 struct rte_eth_dev *eth_dev; /**< Associated Ethernet device. */
149 static LIST_HEAD(, mlx5_ibv_shared) mlx5_ibv_list = LIST_HEAD_INITIALIZER();
150 static pthread_mutex_t mlx5_ibv_list_mutex = PTHREAD_MUTEX_INITIALIZER;
153 * Allocate shared IB device context. If there is multiport device the
154 * master and representors will share this context, if there is single
155 * port dedicated IB device, the context will be used by only given
156 * port due to unification.
158 * Routine first searches the context for the specified IB device name,
159 * if found the shared context assumed and reference counter is incremented.
160 * If no context found the new one is created and initialized with specified
161 * IB device context and parameters.
164 * Pointer to the IB device attributes (name, port, etc).
167 * Pointer to mlx5_ibv_shared object on success,
168 * otherwise NULL and rte_errno is set.
170 static struct mlx5_ibv_shared *
171 mlx5_alloc_shared_ibctx(const struct mlx5_dev_spawn_data *spawn)
173 struct mlx5_ibv_shared *sh;
178 /* Secondary process should not create the shared context. */
179 assert(rte_eal_process_type() == RTE_PROC_PRIMARY);
180 pthread_mutex_lock(&mlx5_ibv_list_mutex);
181 /* Search for IB context by device name. */
182 LIST_FOREACH(sh, &mlx5_ibv_list, next) {
183 if (!strcmp(sh->ibdev_name, spawn->ibv_dev->name)) {
188 /* No device found, we have to create new shared context. */
189 assert(spawn->max_port);
190 sh = rte_zmalloc("ethdev shared ib context",
191 sizeof(struct mlx5_ibv_shared) +
193 sizeof(struct mlx5_ibv_shared_port),
194 RTE_CACHE_LINE_SIZE);
196 DRV_LOG(ERR, "shared context allocation failure");
200 /* Try to open IB device with DV first, then usual Verbs. */
202 sh->ctx = mlx5_glue->dv_open_device(spawn->ibv_dev);
205 DRV_LOG(DEBUG, "DevX is supported");
207 sh->ctx = mlx5_glue->open_device(spawn->ibv_dev);
209 err = errno ? errno : ENODEV;
212 DRV_LOG(DEBUG, "DevX is NOT supported");
214 err = mlx5_glue->query_device_ex(sh->ctx, NULL, &sh->device_attr);
216 DRV_LOG(DEBUG, "ibv_query_device_ex() failed");
220 sh->max_port = spawn->max_port;
221 strncpy(sh->ibdev_name, sh->ctx->device->name,
222 sizeof(sh->ibdev_name));
223 strncpy(sh->ibdev_path, sh->ctx->device->ibdev_path,
224 sizeof(sh->ibdev_path));
225 pthread_mutex_init(&sh->intr_mutex, NULL);
227 * Setting port_id to max unallowed value means
228 * there is no interrupt subhandler installed for
229 * the given port index i.
231 for (i = 0; i < sh->max_port; i++)
232 sh->port[i].ih_port_id = RTE_MAX_ETHPORTS;
233 sh->pd = mlx5_glue->alloc_pd(sh->ctx);
234 if (sh->pd == NULL) {
235 DRV_LOG(ERR, "PD allocation failure");
239 LIST_INSERT_HEAD(&mlx5_ibv_list, sh, next);
241 pthread_mutex_unlock(&mlx5_ibv_list_mutex);
244 pthread_mutex_unlock(&mlx5_ibv_list_mutex);
247 claim_zero(mlx5_glue->dealloc_pd(sh->pd));
249 claim_zero(mlx5_glue->close_device(sh->ctx));
257 * Free shared IB device context. Decrement counter and if zero free
258 * all allocated resources and close handles.
261 * Pointer to mlx5_ibv_shared object to free
264 mlx5_free_shared_ibctx(struct mlx5_ibv_shared *sh)
266 pthread_mutex_lock(&mlx5_ibv_list_mutex);
268 /* Check the object presence in the list. */
269 struct mlx5_ibv_shared *lctx;
271 LIST_FOREACH(lctx, &mlx5_ibv_list, next)
276 DRV_LOG(ERR, "Freeing non-existing shared IB context");
282 /* Secondary process should not free the shared context. */
283 assert(rte_eal_process_type() == RTE_PROC_PRIMARY);
286 LIST_REMOVE(sh, next);
288 * Ensure there is no async event handler installed.
289 * Only primary process handles async device events.
291 assert(!sh->intr_cnt);
293 rte_intr_callback_unregister
294 (&sh->intr_handle, mlx5_dev_interrupt_handler, sh);
295 pthread_mutex_destroy(&sh->intr_mutex);
297 claim_zero(mlx5_glue->dealloc_pd(sh->pd));
299 claim_zero(mlx5_glue->close_device(sh->ctx));
302 pthread_mutex_unlock(&mlx5_ibv_list_mutex);
306 * Initialize DR related data within private structure.
307 * Routine checks the reference counter and does actual
308 * resources creation/initialization only if counter is zero.
311 * Pointer to the private device data structure.
314 * Zero on success, positive error code otherwise.
317 mlx5_alloc_shared_dr(struct mlx5_priv *priv)
319 #ifdef HAVE_MLX5DV_DR
320 struct mlx5_ibv_shared *sh = priv->sh;
326 /* Shared DV/DR structures is already initialized. */
331 /* Reference counter is zero, we should initialize structures. */
332 ns = mlx5dv_dr_create_ns(sh->ctx, MLX5DV_DR_NS_DOMAIN_INGRESS_BYPASS);
334 DRV_LOG(ERR, "ingress mlx5dv_dr_create_ns failed");
339 ns = mlx5dv_dr_create_ns(sh->ctx, MLX5DV_DR_NS_DOMAIN_EGRESS_BYPASS);
341 DRV_LOG(ERR, "egress mlx5dv_dr_create_ns failed");
345 pthread_mutex_init(&sh->dv_mutex, NULL);
352 /* Rollback the created objects. */
354 mlx5dv_dr_destroy_ns(sh->rx_ns);
358 mlx5dv_dr_destroy_ns(sh->tx_ns);
369 * Destroy DR related data within private structure.
372 * Pointer to the private device data structure.
375 mlx5_free_shared_dr(struct mlx5_priv *priv)
377 #ifdef HAVE_MLX5DV_DR
378 struct mlx5_ibv_shared *sh;
380 if (!priv->dr_shared)
385 assert(sh->dv_refcnt);
386 if (sh->dv_refcnt && --sh->dv_refcnt)
389 mlx5dv_dr_destroy_ns(sh->rx_ns);
393 mlx5dv_dr_destroy_ns(sh->tx_ns);
396 pthread_mutex_destroy(&sh->dv_mutex);
403 * Initialize shared data between primary and secondary process.
405 * A memzone is reserved by primary process and secondary processes attach to
409 * 0 on success, a negative errno value otherwise and rte_errno is set.
412 mlx5_init_shared_data(void)
414 const struct rte_memzone *mz;
417 rte_spinlock_lock(&mlx5_shared_data_lock);
418 if (mlx5_shared_data == NULL) {
419 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
420 /* Allocate shared memory. */
421 mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA,
422 sizeof(*mlx5_shared_data),
426 "Cannot allocate mlx5 shared data\n");
430 mlx5_shared_data = mz->addr;
431 memset(mlx5_shared_data, 0, sizeof(*mlx5_shared_data));
432 rte_spinlock_init(&mlx5_shared_data->lock);
434 /* Lookup allocated shared memory. */
435 mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA);
438 "Cannot attach mlx5 shared data\n");
442 mlx5_shared_data = mz->addr;
443 memset(&mlx5_local_data, 0, sizeof(mlx5_local_data));
447 rte_spinlock_unlock(&mlx5_shared_data_lock);
452 * Uninitialize shared data between primary and secondary process.
454 * The pointer of secondary process is dereferenced and primary process frees
458 mlx5_uninit_shared_data(void)
460 const struct rte_memzone *mz;
462 rte_spinlock_lock(&mlx5_shared_data_lock);
463 if (mlx5_shared_data) {
464 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
465 mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA);
466 rte_memzone_free(mz);
468 memset(&mlx5_local_data, 0, sizeof(mlx5_local_data));
470 mlx5_shared_data = NULL;
472 rte_spinlock_unlock(&mlx5_shared_data_lock);
476 * Retrieve integer value from environment variable.
479 * Environment variable name.
482 * Integer value, 0 if the variable is not set.
485 mlx5_getenv_int(const char *name)
487 const char *val = getenv(name);
495 * Verbs callback to allocate a memory. This function should allocate the space
496 * according to the size provided residing inside a huge page.
497 * Please note that all allocation must respect the alignment from libmlx5
498 * (i.e. currently sysconf(_SC_PAGESIZE)).
501 * The size in bytes of the memory to allocate.
503 * A pointer to the callback data.
506 * Allocated buffer, NULL otherwise and rte_errno is set.
509 mlx5_alloc_verbs_buf(size_t size, void *data)
511 struct mlx5_priv *priv = data;
513 size_t alignment = sysconf(_SC_PAGESIZE);
514 unsigned int socket = SOCKET_ID_ANY;
516 if (priv->verbs_alloc_ctx.type == MLX5_VERBS_ALLOC_TYPE_TX_QUEUE) {
517 const struct mlx5_txq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
519 socket = ctrl->socket;
520 } else if (priv->verbs_alloc_ctx.type ==
521 MLX5_VERBS_ALLOC_TYPE_RX_QUEUE) {
522 const struct mlx5_rxq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
524 socket = ctrl->socket;
526 assert(data != NULL);
527 ret = rte_malloc_socket(__func__, size, alignment, socket);
534 * Verbs callback to free a memory.
537 * A pointer to the memory to free.
539 * A pointer to the callback data.
542 mlx5_free_verbs_buf(void *ptr, void *data __rte_unused)
544 assert(data != NULL);
549 * DPDK callback to close the device.
551 * Destroy all queues and objects, free memory.
554 * Pointer to Ethernet device structure.
557 mlx5_dev_close(struct rte_eth_dev *dev)
559 struct mlx5_priv *priv = dev->data->dev_private;
563 DRV_LOG(DEBUG, "port %u closing device \"%s\"",
565 ((priv->sh->ctx != NULL) ? priv->sh->ctx->device->name : ""));
566 /* In case mlx5_dev_stop() has not been called. */
567 mlx5_dev_interrupt_handler_uninstall(dev);
568 mlx5_traffic_disable(dev);
569 mlx5_flow_flush(dev, NULL);
570 /* Prevent crashes when queues are still in use. */
571 dev->rx_pkt_burst = removed_rx_burst;
572 dev->tx_pkt_burst = removed_tx_burst;
574 /* Disable datapath on secondary process. */
575 mlx5_mp_req_stop_rxtx(dev);
576 if (priv->rxqs != NULL) {
577 /* XXX race condition if mlx5_rx_burst() is still running. */
579 for (i = 0; (i != priv->rxqs_n); ++i)
580 mlx5_rxq_release(dev, i);
584 if (priv->txqs != NULL) {
585 /* XXX race condition if mlx5_tx_burst() is still running. */
587 for (i = 0; (i != priv->txqs_n); ++i)
588 mlx5_txq_release(dev, i);
592 mlx5_mprq_free_mp(dev);
593 mlx5_mr_release(dev);
595 mlx5_free_shared_dr(priv);
597 mlx5_free_shared_ibctx(priv->sh);
599 if (priv->rss_conf.rss_key != NULL)
600 rte_free(priv->rss_conf.rss_key);
601 if (priv->reta_idx != NULL)
602 rte_free(priv->reta_idx);
604 mlx5_nl_mac_addr_flush(dev);
605 if (priv->nl_socket_route >= 0)
606 close(priv->nl_socket_route);
607 if (priv->nl_socket_rdma >= 0)
608 close(priv->nl_socket_rdma);
609 if (priv->tcf_context)
610 mlx5_flow_tcf_context_destroy(priv->tcf_context);
611 ret = mlx5_hrxq_ibv_verify(dev);
613 DRV_LOG(WARNING, "port %u some hash Rx queue still remain",
615 ret = mlx5_ind_table_ibv_verify(dev);
617 DRV_LOG(WARNING, "port %u some indirection table still remain",
619 ret = mlx5_rxq_ibv_verify(dev);
621 DRV_LOG(WARNING, "port %u some Verbs Rx queue still remain",
623 ret = mlx5_rxq_verify(dev);
625 DRV_LOG(WARNING, "port %u some Rx queues still remain",
627 ret = mlx5_txq_ibv_verify(dev);
629 DRV_LOG(WARNING, "port %u some Verbs Tx queue still remain",
631 ret = mlx5_txq_verify(dev);
633 DRV_LOG(WARNING, "port %u some Tx queues still remain",
635 ret = mlx5_flow_verify(dev);
637 DRV_LOG(WARNING, "port %u some flows still remain",
639 if (priv->domain_id != RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
643 RTE_ETH_FOREACH_DEV_OF(port_id, dev->device) {
644 struct mlx5_priv *opriv =
645 rte_eth_devices[port_id].data->dev_private;
648 opriv->domain_id != priv->domain_id ||
649 &rte_eth_devices[port_id] == dev)
654 claim_zero(rte_eth_switch_domain_free(priv->domain_id));
656 memset(priv, 0, sizeof(*priv));
657 priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
659 * Reset mac_addrs to NULL such that it is not freed as part of
660 * rte_eth_dev_release_port(). mac_addrs is part of dev_private so
661 * it is freed when dev_private is freed.
663 dev->data->mac_addrs = NULL;
666 const struct eth_dev_ops mlx5_dev_ops = {
667 .dev_configure = mlx5_dev_configure,
668 .dev_start = mlx5_dev_start,
669 .dev_stop = mlx5_dev_stop,
670 .dev_set_link_down = mlx5_set_link_down,
671 .dev_set_link_up = mlx5_set_link_up,
672 .dev_close = mlx5_dev_close,
673 .promiscuous_enable = mlx5_promiscuous_enable,
674 .promiscuous_disable = mlx5_promiscuous_disable,
675 .allmulticast_enable = mlx5_allmulticast_enable,
676 .allmulticast_disable = mlx5_allmulticast_disable,
677 .link_update = mlx5_link_update,
678 .stats_get = mlx5_stats_get,
679 .stats_reset = mlx5_stats_reset,
680 .xstats_get = mlx5_xstats_get,
681 .xstats_reset = mlx5_xstats_reset,
682 .xstats_get_names = mlx5_xstats_get_names,
683 .fw_version_get = mlx5_fw_version_get,
684 .dev_infos_get = mlx5_dev_infos_get,
685 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
686 .vlan_filter_set = mlx5_vlan_filter_set,
687 .rx_queue_setup = mlx5_rx_queue_setup,
688 .tx_queue_setup = mlx5_tx_queue_setup,
689 .rx_queue_release = mlx5_rx_queue_release,
690 .tx_queue_release = mlx5_tx_queue_release,
691 .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
692 .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
693 .mac_addr_remove = mlx5_mac_addr_remove,
694 .mac_addr_add = mlx5_mac_addr_add,
695 .mac_addr_set = mlx5_mac_addr_set,
696 .set_mc_addr_list = mlx5_set_mc_addr_list,
697 .mtu_set = mlx5_dev_set_mtu,
698 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
699 .vlan_offload_set = mlx5_vlan_offload_set,
700 .reta_update = mlx5_dev_rss_reta_update,
701 .reta_query = mlx5_dev_rss_reta_query,
702 .rss_hash_update = mlx5_rss_hash_update,
703 .rss_hash_conf_get = mlx5_rss_hash_conf_get,
704 .filter_ctrl = mlx5_dev_filter_ctrl,
705 .rx_descriptor_status = mlx5_rx_descriptor_status,
706 .tx_descriptor_status = mlx5_tx_descriptor_status,
707 .rx_queue_count = mlx5_rx_queue_count,
708 .rx_queue_intr_enable = mlx5_rx_intr_enable,
709 .rx_queue_intr_disable = mlx5_rx_intr_disable,
710 .is_removed = mlx5_is_removed,
713 /* Available operations from secondary process. */
714 static const struct eth_dev_ops mlx5_dev_sec_ops = {
715 .stats_get = mlx5_stats_get,
716 .stats_reset = mlx5_stats_reset,
717 .xstats_get = mlx5_xstats_get,
718 .xstats_reset = mlx5_xstats_reset,
719 .xstats_get_names = mlx5_xstats_get_names,
720 .fw_version_get = mlx5_fw_version_get,
721 .dev_infos_get = mlx5_dev_infos_get,
722 .rx_descriptor_status = mlx5_rx_descriptor_status,
723 .tx_descriptor_status = mlx5_tx_descriptor_status,
726 /* Available operations in flow isolated mode. */
727 const struct eth_dev_ops mlx5_dev_ops_isolate = {
728 .dev_configure = mlx5_dev_configure,
729 .dev_start = mlx5_dev_start,
730 .dev_stop = mlx5_dev_stop,
731 .dev_set_link_down = mlx5_set_link_down,
732 .dev_set_link_up = mlx5_set_link_up,
733 .dev_close = mlx5_dev_close,
734 .promiscuous_enable = mlx5_promiscuous_enable,
735 .promiscuous_disable = mlx5_promiscuous_disable,
736 .allmulticast_enable = mlx5_allmulticast_enable,
737 .allmulticast_disable = mlx5_allmulticast_disable,
738 .link_update = mlx5_link_update,
739 .stats_get = mlx5_stats_get,
740 .stats_reset = mlx5_stats_reset,
741 .xstats_get = mlx5_xstats_get,
742 .xstats_reset = mlx5_xstats_reset,
743 .xstats_get_names = mlx5_xstats_get_names,
744 .fw_version_get = mlx5_fw_version_get,
745 .dev_infos_get = mlx5_dev_infos_get,
746 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
747 .vlan_filter_set = mlx5_vlan_filter_set,
748 .rx_queue_setup = mlx5_rx_queue_setup,
749 .tx_queue_setup = mlx5_tx_queue_setup,
750 .rx_queue_release = mlx5_rx_queue_release,
751 .tx_queue_release = mlx5_tx_queue_release,
752 .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
753 .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
754 .mac_addr_remove = mlx5_mac_addr_remove,
755 .mac_addr_add = mlx5_mac_addr_add,
756 .mac_addr_set = mlx5_mac_addr_set,
757 .set_mc_addr_list = mlx5_set_mc_addr_list,
758 .mtu_set = mlx5_dev_set_mtu,
759 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
760 .vlan_offload_set = mlx5_vlan_offload_set,
761 .filter_ctrl = mlx5_dev_filter_ctrl,
762 .rx_descriptor_status = mlx5_rx_descriptor_status,
763 .tx_descriptor_status = mlx5_tx_descriptor_status,
764 .rx_queue_intr_enable = mlx5_rx_intr_enable,
765 .rx_queue_intr_disable = mlx5_rx_intr_disable,
766 .is_removed = mlx5_is_removed,
770 * Verify and store value for device argument.
773 * Key argument to verify.
775 * Value associated with key.
780 * 0 on success, a negative errno value otherwise and rte_errno is set.
783 mlx5_args_check(const char *key, const char *val, void *opaque)
785 struct mlx5_dev_config *config = opaque;
788 /* No-op, port representors are processed in mlx5_dev_spawn(). */
789 if (!strcmp(MLX5_REPRESENTOR, key))
792 tmp = strtoul(val, NULL, 0);
795 DRV_LOG(WARNING, "%s: \"%s\" is not a valid integer", key, val);
798 if (strcmp(MLX5_RXQ_CQE_COMP_EN, key) == 0) {
799 config->cqe_comp = !!tmp;
800 } else if (strcmp(MLX5_RXQ_CQE_PAD_EN, key) == 0) {
801 config->cqe_pad = !!tmp;
802 } else if (strcmp(MLX5_RXQ_PKT_PAD_EN, key) == 0) {
803 config->hw_padding = !!tmp;
804 } else if (strcmp(MLX5_RX_MPRQ_EN, key) == 0) {
805 config->mprq.enabled = !!tmp;
806 } else if (strcmp(MLX5_RX_MPRQ_LOG_STRIDE_NUM, key) == 0) {
807 config->mprq.stride_num_n = tmp;
808 } else if (strcmp(MLX5_RX_MPRQ_MAX_MEMCPY_LEN, key) == 0) {
809 config->mprq.max_memcpy_len = tmp;
810 } else if (strcmp(MLX5_RXQS_MIN_MPRQ, key) == 0) {
811 config->mprq.min_rxqs_num = tmp;
812 } else if (strcmp(MLX5_TXQ_INLINE, key) == 0) {
813 config->txq_inline = tmp;
814 } else if (strcmp(MLX5_TXQS_MIN_INLINE, key) == 0) {
815 config->txqs_inline = tmp;
816 } else if (strcmp(MLX5_TXQS_MAX_VEC, key) == 0) {
817 config->txqs_vec = tmp;
818 } else if (strcmp(MLX5_TXQ_MPW_EN, key) == 0) {
820 } else if (strcmp(MLX5_TXQ_MPW_HDR_DSEG_EN, key) == 0) {
821 config->mpw_hdr_dseg = !!tmp;
822 } else if (strcmp(MLX5_TXQ_MAX_INLINE_LEN, key) == 0) {
823 config->inline_max_packet_sz = tmp;
824 } else if (strcmp(MLX5_TX_VEC_EN, key) == 0) {
825 config->tx_vec_en = !!tmp;
826 } else if (strcmp(MLX5_RX_VEC_EN, key) == 0) {
827 config->rx_vec_en = !!tmp;
828 } else if (strcmp(MLX5_L3_VXLAN_EN, key) == 0) {
829 config->l3_vxlan_en = !!tmp;
830 } else if (strcmp(MLX5_VF_NL_EN, key) == 0) {
831 config->vf_nl_en = !!tmp;
832 } else if (strcmp(MLX5_DV_FLOW_EN, key) == 0) {
833 config->dv_flow_en = !!tmp;
834 } else if (strcmp(MLX5_MR_EXT_MEMSEG_EN, key) == 0) {
835 config->mr_ext_memseg_en = !!tmp;
837 DRV_LOG(WARNING, "%s: unknown parameter", key);
845 * Parse device parameters.
848 * Pointer to device configuration structure.
850 * Device arguments structure.
853 * 0 on success, a negative errno value otherwise and rte_errno is set.
856 mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs)
858 const char **params = (const char *[]){
859 MLX5_RXQ_CQE_COMP_EN,
863 MLX5_RX_MPRQ_LOG_STRIDE_NUM,
864 MLX5_RX_MPRQ_MAX_MEMCPY_LEN,
867 MLX5_TXQS_MIN_INLINE,
870 MLX5_TXQ_MPW_HDR_DSEG_EN,
871 MLX5_TXQ_MAX_INLINE_LEN,
877 MLX5_MR_EXT_MEMSEG_EN,
881 struct rte_kvargs *kvlist;
887 /* Following UGLY cast is done to pass checkpatch. */
888 kvlist = rte_kvargs_parse(devargs->args, params);
891 /* Process parameters. */
892 for (i = 0; (params[i] != NULL); ++i) {
893 if (rte_kvargs_count(kvlist, params[i])) {
894 ret = rte_kvargs_process(kvlist, params[i],
895 mlx5_args_check, config);
898 rte_kvargs_free(kvlist);
903 rte_kvargs_free(kvlist);
907 static struct rte_pci_driver mlx5_driver;
910 find_lower_va_bound(const struct rte_memseg_list *msl,
911 const struct rte_memseg *ms, void *arg)
920 *addr = RTE_MIN(*addr, ms->addr);
926 * Reserve UAR address space for primary process.
928 * Process local resource is used by both primary and secondary to avoid
929 * duplicate reservation. The space has to be available on both primary and
930 * secondary process, TXQ UAR maps to this area using fixed mmap w/o double
934 * 0 on success, a negative errno value otherwise and rte_errno is set.
937 mlx5_uar_init_primary(void)
939 struct mlx5_shared_data *sd = mlx5_shared_data;
940 void *addr = (void *)0;
944 /* find out lower bound of hugepage segments */
945 rte_memseg_walk(find_lower_va_bound, &addr);
946 /* keep distance to hugepages to minimize potential conflicts. */
947 addr = RTE_PTR_SUB(addr, (uintptr_t)(MLX5_UAR_OFFSET + MLX5_UAR_SIZE));
948 /* anonymous mmap, no real memory consumption. */
949 addr = mmap(addr, MLX5_UAR_SIZE,
950 PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
951 if (addr == MAP_FAILED) {
953 "Failed to reserve UAR address space, please"
954 " adjust MLX5_UAR_SIZE or try --base-virtaddr");
958 /* Accept either same addr or a new addr returned from mmap if target
961 DRV_LOG(INFO, "Reserved UAR address space: %p", addr);
962 sd->uar_base = addr; /* for primary and secondary UAR re-mmap. */
967 * Unmap UAR address space reserved for primary process.
970 mlx5_uar_uninit_primary(void)
972 struct mlx5_shared_data *sd = mlx5_shared_data;
976 munmap(sd->uar_base, MLX5_UAR_SIZE);
981 * Reserve UAR address space for secondary process, align with primary process.
984 * 0 on success, a negative errno value otherwise and rte_errno is set.
987 mlx5_uar_init_secondary(void)
989 struct mlx5_shared_data *sd = mlx5_shared_data;
990 struct mlx5_local_data *ld = &mlx5_local_data;
993 if (ld->uar_base) { /* Already reserved. */
994 assert(sd->uar_base == ld->uar_base);
997 assert(sd->uar_base);
998 /* anonymous mmap, no real memory consumption. */
999 addr = mmap(sd->uar_base, MLX5_UAR_SIZE,
1000 PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1001 if (addr == MAP_FAILED) {
1002 DRV_LOG(ERR, "UAR mmap failed: %p size: %llu",
1003 sd->uar_base, MLX5_UAR_SIZE);
1007 if (sd->uar_base != addr) {
1009 "UAR address %p size %llu occupied, please"
1010 " adjust MLX5_UAR_OFFSET or try EAL parameter"
1012 sd->uar_base, MLX5_UAR_SIZE);
1016 ld->uar_base = addr;
1017 DRV_LOG(INFO, "Reserved UAR address space: %p", addr);
1022 * Unmap UAR address space reserved for secondary process.
1025 mlx5_uar_uninit_secondary(void)
1027 struct mlx5_local_data *ld = &mlx5_local_data;
1031 munmap(ld->uar_base, MLX5_UAR_SIZE);
1032 ld->uar_base = NULL;
1036 * PMD global initialization.
1038 * Independent from individual device, this function initializes global
1039 * per-PMD data structures distinguishing primary and secondary processes.
1040 * Hence, each initialization is called once per a process.
1043 * 0 on success, a negative errno value otherwise and rte_errno is set.
1046 mlx5_init_once(void)
1048 struct mlx5_shared_data *sd;
1049 struct mlx5_local_data *ld = &mlx5_local_data;
1052 if (mlx5_init_shared_data())
1054 sd = mlx5_shared_data;
1056 rte_spinlock_lock(&sd->lock);
1057 switch (rte_eal_process_type()) {
1058 case RTE_PROC_PRIMARY:
1061 LIST_INIT(&sd->mem_event_cb_list);
1062 rte_rwlock_init(&sd->mem_event_rwlock);
1063 rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
1064 mlx5_mr_mem_event_cb, NULL);
1065 mlx5_mp_init_primary();
1066 ret = mlx5_uar_init_primary();
1069 sd->init_done = true;
1071 case RTE_PROC_SECONDARY:
1074 mlx5_mp_init_secondary();
1075 ret = mlx5_uar_init_secondary();
1078 ++sd->secondary_cnt;
1079 ld->init_done = true;
1084 rte_spinlock_unlock(&sd->lock);
1087 switch (rte_eal_process_type()) {
1088 case RTE_PROC_PRIMARY:
1089 mlx5_uar_uninit_primary();
1090 mlx5_mp_uninit_primary();
1091 rte_mem_event_callback_unregister("MLX5_MEM_EVENT_CB", NULL);
1093 case RTE_PROC_SECONDARY:
1094 mlx5_uar_uninit_secondary();
1095 mlx5_mp_uninit_secondary();
1100 rte_spinlock_unlock(&sd->lock);
1101 mlx5_uninit_shared_data();
1106 * Spawn an Ethernet device from Verbs information.
1109 * Backing DPDK device.
1111 * Verbs device parameters (name, port, switch_info) to spawn.
1113 * Device configuration parameters.
1116 * A valid Ethernet device object on success, NULL otherwise and rte_errno
1117 * is set. The following errors are defined:
1119 * EBUSY: device is not supposed to be spawned.
1120 * EEXIST: device is already spawned
1122 static struct rte_eth_dev *
1123 mlx5_dev_spawn(struct rte_device *dpdk_dev,
1124 struct mlx5_dev_spawn_data *spawn,
1125 struct mlx5_dev_config config)
1127 const struct mlx5_switch_info *switch_info = &spawn->info;
1128 struct mlx5_ibv_shared *sh = NULL;
1129 struct ibv_port_attr port_attr;
1130 struct mlx5dv_context dv_attr = { .comp_mask = 0 };
1131 struct rte_eth_dev *eth_dev = NULL;
1132 struct mlx5_priv *priv = NULL;
1134 unsigned int hw_padding = 0;
1136 unsigned int cqe_comp;
1137 unsigned int cqe_pad = 0;
1138 unsigned int tunnel_en = 0;
1139 unsigned int mpls_en = 0;
1140 unsigned int swp = 0;
1141 unsigned int mprq = 0;
1142 unsigned int mprq_min_stride_size_n = 0;
1143 unsigned int mprq_max_stride_size_n = 0;
1144 unsigned int mprq_min_stride_num_n = 0;
1145 unsigned int mprq_max_stride_num_n = 0;
1146 struct ether_addr mac;
1147 char name[RTE_ETH_NAME_MAX_LEN];
1148 int own_domain_id = 0;
1152 /* Determine if this port representor is supposed to be spawned. */
1153 if (switch_info->representor && dpdk_dev->devargs) {
1154 struct rte_eth_devargs eth_da;
1156 err = rte_eth_devargs_parse(dpdk_dev->devargs->args, ð_da);
1159 DRV_LOG(ERR, "failed to process device arguments: %s",
1160 strerror(rte_errno));
1163 for (i = 0; i < eth_da.nb_representor_ports; ++i)
1164 if (eth_da.representor_ports[i] ==
1165 (uint16_t)switch_info->port_name)
1167 if (i == eth_da.nb_representor_ports) {
1172 /* Build device name. */
1173 if (!switch_info->representor)
1174 strlcpy(name, dpdk_dev->name, sizeof(name));
1176 snprintf(name, sizeof(name), "%s_representor_%u",
1177 dpdk_dev->name, switch_info->port_name);
1178 /* check if the device is already spawned */
1179 if (rte_eth_dev_get_port_by_name(name, &port_id) == 0) {
1183 DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name);
1184 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1185 eth_dev = rte_eth_dev_attach_secondary(name);
1186 if (eth_dev == NULL) {
1187 DRV_LOG(ERR, "can not attach rte ethdev");
1191 eth_dev->device = dpdk_dev;
1192 eth_dev->dev_ops = &mlx5_dev_sec_ops;
1193 /* Receive command fd from primary process */
1194 err = mlx5_mp_req_verbs_cmd_fd(eth_dev);
1197 /* Remap UAR for Tx queues. */
1198 err = mlx5_tx_uar_remap(eth_dev, err);
1202 * Ethdev pointer is still required as input since
1203 * the primary device is not accessible from the
1204 * secondary process.
1206 eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev);
1207 eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev);
1210 sh = mlx5_alloc_shared_ibctx(spawn);
1213 config.devx = sh->devx;
1214 #ifdef HAVE_IBV_MLX5_MOD_SWP
1215 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP;
1218 * Multi-packet send is supported by ConnectX-4 Lx PF as well
1219 * as all ConnectX-5 devices.
1221 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1222 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS;
1224 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
1225 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ;
1227 mlx5_glue->dv_query_device(sh->ctx, &dv_attr);
1228 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) {
1229 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) {
1230 DRV_LOG(DEBUG, "enhanced MPW is supported");
1231 mps = MLX5_MPW_ENHANCED;
1233 DRV_LOG(DEBUG, "MPW is supported");
1237 DRV_LOG(DEBUG, "MPW isn't supported");
1238 mps = MLX5_MPW_DISABLED;
1240 #ifdef HAVE_IBV_MLX5_MOD_SWP
1241 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP)
1242 swp = dv_attr.sw_parsing_caps.sw_parsing_offloads;
1243 DRV_LOG(DEBUG, "SWP support: %u", swp);
1246 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
1247 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) {
1248 struct mlx5dv_striding_rq_caps mprq_caps =
1249 dv_attr.striding_rq_caps;
1251 DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d",
1252 mprq_caps.min_single_stride_log_num_of_bytes);
1253 DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d",
1254 mprq_caps.max_single_stride_log_num_of_bytes);
1255 DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d",
1256 mprq_caps.min_single_wqe_log_num_of_strides);
1257 DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d",
1258 mprq_caps.max_single_wqe_log_num_of_strides);
1259 DRV_LOG(DEBUG, "\tsupported_qpts: %d",
1260 mprq_caps.supported_qpts);
1261 DRV_LOG(DEBUG, "device supports Multi-Packet RQ");
1263 mprq_min_stride_size_n =
1264 mprq_caps.min_single_stride_log_num_of_bytes;
1265 mprq_max_stride_size_n =
1266 mprq_caps.max_single_stride_log_num_of_bytes;
1267 mprq_min_stride_num_n =
1268 mprq_caps.min_single_wqe_log_num_of_strides;
1269 mprq_max_stride_num_n =
1270 mprq_caps.max_single_wqe_log_num_of_strides;
1271 config.mprq.stride_num_n = RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N,
1272 mprq_min_stride_num_n);
1275 if (RTE_CACHE_LINE_SIZE == 128 &&
1276 !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP))
1280 config.cqe_comp = cqe_comp;
1281 #ifdef HAVE_IBV_MLX5_MOD_CQE_128B_PAD
1282 /* Whether device supports 128B Rx CQE padding. */
1283 cqe_pad = RTE_CACHE_LINE_SIZE == 128 &&
1284 (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_PAD);
1286 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1287 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) {
1288 tunnel_en = ((dv_attr.tunnel_offloads_caps &
1289 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) &&
1290 (dv_attr.tunnel_offloads_caps &
1291 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE));
1293 DRV_LOG(DEBUG, "tunnel offloading is %ssupported",
1294 tunnel_en ? "" : "not ");
1297 "tunnel offloading disabled due to old OFED/rdma-core version");
1299 config.tunnel_en = tunnel_en;
1300 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1301 mpls_en = ((dv_attr.tunnel_offloads_caps &
1302 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) &&
1303 (dv_attr.tunnel_offloads_caps &
1304 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP));
1305 DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported",
1306 mpls_en ? "" : "not ");
1308 DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to"
1309 " old OFED/rdma-core version or firmware configuration");
1311 config.mpls_en = mpls_en;
1312 /* Check port status. */
1313 err = mlx5_glue->query_port(sh->ctx, spawn->ibv_port, &port_attr);
1315 DRV_LOG(ERR, "port query failed: %s", strerror(err));
1318 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
1319 DRV_LOG(ERR, "port is not configured in Ethernet mode");
1323 if (port_attr.state != IBV_PORT_ACTIVE)
1324 DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)",
1325 mlx5_glue->port_state_str(port_attr.state),
1327 /* Allocate private eth device data. */
1328 priv = rte_zmalloc("ethdev private structure",
1330 RTE_CACHE_LINE_SIZE);
1332 DRV_LOG(ERR, "priv allocation failure");
1337 priv->ibv_port = spawn->ibv_port;
1338 priv->mtu = ETHER_MTU;
1340 /* Initialize UAR access locks for 32bit implementations. */
1341 rte_spinlock_init(&priv->uar_lock_cq);
1342 for (i = 0; i < MLX5_UAR_PAGE_NUM_MAX; i++)
1343 rte_spinlock_init(&priv->uar_lock[i]);
1345 /* Some internal functions rely on Netlink sockets, open them now. */
1346 priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA);
1347 priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE);
1349 priv->representor = !!switch_info->representor;
1350 priv->master = !!switch_info->master;
1351 priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
1353 * Currently we support single E-Switch per PF configurations
1354 * only and vport_id field contains the vport index for
1355 * associated VF, which is deduced from representor port name.
1356 * For example, let's have the IB device port 10, it has
1357 * attached network device eth0, which has port name attribute
1358 * pf0vf2, we can deduce the VF number as 2, and set vport index
1359 * as 3 (2+1). This assigning schema should be changed if the
1360 * multiple E-Switch instances per PF configurations or/and PCI
1361 * subfunctions are added.
1363 priv->vport_id = switch_info->representor ?
1364 switch_info->port_name + 1 : -1;
1365 /* representor_id field keeps the unmodified port/VF index. */
1366 priv->representor_id = switch_info->representor ?
1367 switch_info->port_name : -1;
1369 * Look for sibling devices in order to reuse their switch domain
1370 * if any, otherwise allocate one.
1372 RTE_ETH_FOREACH_DEV_OF(port_id, dpdk_dev) {
1373 const struct mlx5_priv *opriv =
1374 rte_eth_devices[port_id].data->dev_private;
1378 RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID)
1380 priv->domain_id = opriv->domain_id;
1383 if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
1384 err = rte_eth_switch_domain_alloc(&priv->domain_id);
1387 DRV_LOG(ERR, "unable to allocate switch domain: %s",
1388 strerror(rte_errno));
1393 err = mlx5_args(&config, dpdk_dev->devargs);
1396 DRV_LOG(ERR, "failed to process device arguments: %s",
1397 strerror(rte_errno));
1400 config.hw_csum = !!(sh->device_attr.device_cap_flags_ex &
1401 IBV_DEVICE_RAW_IP_CSUM);
1402 DRV_LOG(DEBUG, "checksum offloading is %ssupported",
1403 (config.hw_csum ? "" : "not "));
1404 #if !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) && \
1405 !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45)
1406 DRV_LOG(DEBUG, "counters are not supported");
1408 #ifndef HAVE_IBV_FLOW_DV_SUPPORT
1409 if (config.dv_flow_en) {
1410 DRV_LOG(WARNING, "DV flow is not supported");
1411 config.dv_flow_en = 0;
1414 config.ind_table_max_size =
1415 sh->device_attr.rss_caps.max_rwq_indirection_table_size;
1417 * Remove this check once DPDK supports larger/variable
1418 * indirection tables.
1420 if (config.ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512)
1421 config.ind_table_max_size = ETH_RSS_RETA_SIZE_512;
1422 DRV_LOG(DEBUG, "maximum Rx indirection table size is %u",
1423 config.ind_table_max_size);
1424 config.hw_vlan_strip = !!(sh->device_attr.raw_packet_caps &
1425 IBV_RAW_PACKET_CAP_CVLAN_STRIPPING);
1426 DRV_LOG(DEBUG, "VLAN stripping is %ssupported",
1427 (config.hw_vlan_strip ? "" : "not "));
1428 config.hw_fcs_strip = !!(sh->device_attr.raw_packet_caps &
1429 IBV_RAW_PACKET_CAP_SCATTER_FCS);
1430 DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported",
1431 (config.hw_fcs_strip ? "" : "not "));
1432 #if defined(HAVE_IBV_WQ_FLAG_RX_END_PADDING)
1433 hw_padding = !!sh->device_attr.rx_pad_end_addr_align;
1434 #elif defined(HAVE_IBV_WQ_FLAGS_PCI_WRITE_END_PADDING)
1435 hw_padding = !!(sh->device_attr.device_cap_flags_ex &
1436 IBV_DEVICE_PCI_WRITE_END_PADDING);
1438 if (config.hw_padding && !hw_padding) {
1439 DRV_LOG(DEBUG, "Rx end alignment padding isn't supported");
1440 config.hw_padding = 0;
1441 } else if (config.hw_padding) {
1442 DRV_LOG(DEBUG, "Rx end alignment padding is enabled");
1444 config.tso = (sh->device_attr.tso_caps.max_tso > 0 &&
1445 (sh->device_attr.tso_caps.supported_qpts &
1446 (1 << IBV_QPT_RAW_PACKET)));
1448 config.tso_max_payload_sz = sh->device_attr.tso_caps.max_tso;
1450 * MPW is disabled by default, while the Enhanced MPW is enabled
1453 if (config.mps == MLX5_ARG_UNSET)
1454 config.mps = (mps == MLX5_MPW_ENHANCED) ? MLX5_MPW_ENHANCED :
1457 config.mps = config.mps ? mps : MLX5_MPW_DISABLED;
1458 DRV_LOG(INFO, "%sMPS is %s",
1459 config.mps == MLX5_MPW_ENHANCED ? "enhanced " : "",
1460 config.mps != MLX5_MPW_DISABLED ? "enabled" : "disabled");
1461 if (config.cqe_comp && !cqe_comp) {
1462 DRV_LOG(WARNING, "Rx CQE compression isn't supported");
1463 config.cqe_comp = 0;
1465 if (config.cqe_pad && !cqe_pad) {
1466 DRV_LOG(WARNING, "Rx CQE padding isn't supported");
1468 } else if (config.cqe_pad) {
1469 DRV_LOG(INFO, "Rx CQE padding is enabled");
1471 if (config.mprq.enabled && mprq) {
1472 if (config.mprq.stride_num_n > mprq_max_stride_num_n ||
1473 config.mprq.stride_num_n < mprq_min_stride_num_n) {
1474 config.mprq.stride_num_n =
1475 RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N,
1476 mprq_min_stride_num_n);
1478 "the number of strides"
1479 " for Multi-Packet RQ is out of range,"
1480 " setting default value (%u)",
1481 1 << config.mprq.stride_num_n);
1483 config.mprq.min_stride_size_n = mprq_min_stride_size_n;
1484 config.mprq.max_stride_size_n = mprq_max_stride_size_n;
1485 } else if (config.mprq.enabled && !mprq) {
1486 DRV_LOG(WARNING, "Multi-Packet RQ isn't supported");
1487 config.mprq.enabled = 0;
1489 eth_dev = rte_eth_dev_allocate(name);
1490 if (eth_dev == NULL) {
1491 DRV_LOG(ERR, "can not allocate rte ethdev");
1495 /* Flag to call rte_eth_dev_release_port() in rte_eth_dev_close(). */
1496 eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
1497 if (priv->representor) {
1498 eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
1499 eth_dev->data->representor_id = priv->representor_id;
1501 eth_dev->data->dev_private = priv;
1502 priv->dev_data = eth_dev->data;
1503 eth_dev->data->mac_addrs = priv->mac;
1504 eth_dev->device = dpdk_dev;
1505 /* Configure the first MAC address by default. */
1506 if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) {
1508 "port %u cannot get MAC address, is mlx5_en"
1509 " loaded? (errno: %s)",
1510 eth_dev->data->port_id, strerror(rte_errno));
1515 "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
1516 eth_dev->data->port_id,
1517 mac.addr_bytes[0], mac.addr_bytes[1],
1518 mac.addr_bytes[2], mac.addr_bytes[3],
1519 mac.addr_bytes[4], mac.addr_bytes[5]);
1522 char ifname[IF_NAMESIZE];
1524 if (mlx5_get_ifname(eth_dev, &ifname) == 0)
1525 DRV_LOG(DEBUG, "port %u ifname is \"%s\"",
1526 eth_dev->data->port_id, ifname);
1528 DRV_LOG(DEBUG, "port %u ifname is unknown",
1529 eth_dev->data->port_id);
1532 /* Get actual MTU if possible. */
1533 err = mlx5_get_mtu(eth_dev, &priv->mtu);
1538 DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id,
1540 /* Initialize burst functions to prevent crashes before link-up. */
1541 eth_dev->rx_pkt_burst = removed_rx_burst;
1542 eth_dev->tx_pkt_burst = removed_tx_burst;
1543 eth_dev->dev_ops = &mlx5_dev_ops;
1544 /* Register MAC address. */
1545 claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
1546 if (config.vf && config.vf_nl_en)
1547 mlx5_nl_mac_addr_sync(eth_dev);
1548 priv->tcf_context = mlx5_flow_tcf_context_create();
1549 if (!priv->tcf_context) {
1552 "flow rules relying on switch offloads will not be"
1553 " supported: cannot open libmnl socket: %s",
1554 strerror(rte_errno));
1556 struct rte_flow_error error;
1557 unsigned int ifindex = mlx5_ifindex(eth_dev);
1562 "cannot retrieve network interface index";
1564 err = mlx5_flow_tcf_init(priv->tcf_context,
1569 "flow rules relying on switch offloads will"
1570 " not be supported: %s: %s",
1571 error.message, strerror(rte_errno));
1572 mlx5_flow_tcf_context_destroy(priv->tcf_context);
1573 priv->tcf_context = NULL;
1576 if (config.dv_flow_en) {
1577 err = mlx5_alloc_shared_dr(priv);
1581 TAILQ_INIT(&priv->flows);
1582 TAILQ_INIT(&priv->ctrl_flows);
1583 /* Hint libmlx5 to use PMD allocator for data plane resources */
1584 struct mlx5dv_ctx_allocators alctr = {
1585 .alloc = &mlx5_alloc_verbs_buf,
1586 .free = &mlx5_free_verbs_buf,
1589 mlx5_glue->dv_set_context_attr(sh->ctx,
1590 MLX5DV_CTX_ATTR_BUF_ALLOCATORS,
1591 (void *)((uintptr_t)&alctr));
1592 /* Bring Ethernet device up. */
1593 DRV_LOG(DEBUG, "port %u forcing Ethernet interface up",
1594 eth_dev->data->port_id);
1595 mlx5_set_link_up(eth_dev);
1597 * Even though the interrupt handler is not installed yet,
1598 * interrupts will still trigger on the async_fd from
1599 * Verbs context returned by ibv_open_device().
1601 mlx5_link_update(eth_dev, 0);
1602 /* Store device configuration on private structure. */
1603 priv->config = config;
1604 /* Supported Verbs flow priority number detection. */
1605 err = mlx5_flow_discover_priorities(eth_dev);
1610 priv->config.flow_prio = err;
1612 * Once the device is added to the list of memory event
1613 * callback, its global MR cache table cannot be expanded
1614 * on the fly because of deadlock. If it overflows, lookup
1615 * should be done by searching MR list linearly, which is slow.
1617 err = mlx5_mr_btree_init(&priv->mr.cache,
1618 MLX5_MR_BTREE_CACHE_N * 2,
1619 eth_dev->device->numa_node);
1624 /* Add device to memory callback list. */
1625 rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock);
1626 LIST_INSERT_HEAD(&mlx5_shared_data->mem_event_cb_list,
1627 priv, mem_event_cb);
1628 rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock);
1633 mlx5_free_shared_dr(priv);
1634 if (priv->nl_socket_route >= 0)
1635 close(priv->nl_socket_route);
1636 if (priv->nl_socket_rdma >= 0)
1637 close(priv->nl_socket_rdma);
1638 if (priv->tcf_context)
1639 mlx5_flow_tcf_context_destroy(priv->tcf_context);
1641 claim_zero(rte_eth_switch_domain_free(priv->domain_id));
1643 if (eth_dev != NULL)
1644 eth_dev->data->dev_private = NULL;
1646 if (eth_dev != NULL) {
1647 /* mac_addrs must not be freed alone because part of dev_private */
1648 eth_dev->data->mac_addrs = NULL;
1649 rte_eth_dev_release_port(eth_dev);
1652 mlx5_free_shared_ibctx(sh);
1659 * Comparison callback to sort device data.
1661 * This is meant to be used with qsort().
1664 * Pointer to pointer to first data object.
1666 * Pointer to pointer to second data object.
1669 * 0 if both objects are equal, less than 0 if the first argument is less
1670 * than the second, greater than 0 otherwise.
1673 mlx5_dev_spawn_data_cmp(const void *a, const void *b)
1675 const struct mlx5_switch_info *si_a =
1676 &((const struct mlx5_dev_spawn_data *)a)->info;
1677 const struct mlx5_switch_info *si_b =
1678 &((const struct mlx5_dev_spawn_data *)b)->info;
1681 /* Master device first. */
1682 ret = si_b->master - si_a->master;
1685 /* Then representor devices. */
1686 ret = si_b->representor - si_a->representor;
1689 /* Unidentified devices come last in no specific order. */
1690 if (!si_a->representor)
1692 /* Order representors by name. */
1693 return si_a->port_name - si_b->port_name;
1697 * DPDK callback to register a PCI device.
1699 * This function spawns Ethernet devices out of a given PCI device.
1701 * @param[in] pci_drv
1702 * PCI driver structure (mlx5_driver).
1703 * @param[in] pci_dev
1704 * PCI device information.
1707 * 0 on success, a negative errno value otherwise and rte_errno is set.
1710 mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1711 struct rte_pci_device *pci_dev)
1713 struct ibv_device **ibv_list;
1715 * Number of found IB Devices matching with requested PCI BDF.
1716 * nd != 1 means there are multiple IB devices over the same
1717 * PCI device and we have representors and master.
1719 unsigned int nd = 0;
1721 * Number of found IB device Ports. nd = 1 and np = 1..n means
1722 * we have the single multiport IB device, and there may be
1723 * representors attached to some of found ports.
1725 unsigned int np = 0;
1727 * Number of DPDK ethernet devices to Spawn - either over
1728 * multiple IB devices or multiple ports of single IB device.
1729 * Actually this is the number of iterations to spawn.
1731 unsigned int ns = 0;
1732 struct mlx5_dev_config dev_config;
1735 ret = mlx5_init_once();
1737 DRV_LOG(ERR, "unable to init PMD global data: %s",
1738 strerror(rte_errno));
1741 assert(pci_drv == &mlx5_driver);
1743 ibv_list = mlx5_glue->get_device_list(&ret);
1745 rte_errno = errno ? errno : ENOSYS;
1746 DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?");
1750 * First scan the list of all Infiniband devices to find
1751 * matching ones, gathering into the list.
1753 struct ibv_device *ibv_match[ret + 1];
1759 struct rte_pci_addr pci_addr;
1761 DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name);
1762 if (mlx5_ibv_device_to_pci_addr(ibv_list[ret], &pci_addr))
1764 if (pci_dev->addr.domain != pci_addr.domain ||
1765 pci_dev->addr.bus != pci_addr.bus ||
1766 pci_dev->addr.devid != pci_addr.devid ||
1767 pci_dev->addr.function != pci_addr.function)
1769 DRV_LOG(INFO, "PCI information matches for device \"%s\"",
1770 ibv_list[ret]->name);
1771 ibv_match[nd++] = ibv_list[ret];
1773 ibv_match[nd] = NULL;
1775 /* No device matches, just complain and bail out. */
1776 mlx5_glue->free_device_list(ibv_list);
1778 "no Verbs device matches PCI device " PCI_PRI_FMT ","
1779 " are kernel drivers loaded?",
1780 pci_dev->addr.domain, pci_dev->addr.bus,
1781 pci_dev->addr.devid, pci_dev->addr.function);
1786 nl_route = mlx5_nl_init(NETLINK_ROUTE);
1787 nl_rdma = mlx5_nl_init(NETLINK_RDMA);
1790 * Found single matching device may have multiple ports.
1791 * Each port may be representor, we have to check the port
1792 * number and check the representors existence.
1795 np = mlx5_nl_portnum(nl_rdma, ibv_match[0]->name);
1797 DRV_LOG(WARNING, "can not get IB device \"%s\""
1798 " ports number", ibv_match[0]->name);
1801 * Now we can determine the maximal
1802 * amount of devices to be spawned.
1804 struct mlx5_dev_spawn_data list[np ? np : nd];
1808 * Single IB device with multiple ports found,
1809 * it may be E-Switch master device and representors.
1810 * We have to perform identification trough the ports.
1812 assert(nl_rdma >= 0);
1815 for (i = 1; i <= np; ++i) {
1816 list[ns].max_port = np;
1817 list[ns].ibv_port = i;
1818 list[ns].ibv_dev = ibv_match[0];
1819 list[ns].eth_dev = NULL;
1820 list[ns].ifindex = mlx5_nl_ifindex
1821 (nl_rdma, list[ns].ibv_dev->name, i);
1822 if (!list[ns].ifindex) {
1824 * No network interface index found for the
1825 * specified port, it means there is no
1826 * representor on this port. It's OK,
1827 * there can be disabled ports, for example
1828 * if sriov_numvfs < sriov_totalvfs.
1834 ret = mlx5_nl_switch_info
1838 if (ret || (!list[ns].info.representor &&
1839 !list[ns].info.master)) {
1841 * We failed to recognize representors with
1842 * Netlink, let's try to perform the task
1845 ret = mlx5_sysfs_switch_info
1849 if (!ret && (list[ns].info.representor ^
1850 list[ns].info.master))
1855 "unable to recognize master/representors"
1856 " on the IB device with multiple ports");
1863 * The existence of several matching entries (nd > 1) means
1864 * port representors have been instantiated. No existing Verbs
1865 * call nor sysfs entries can tell them apart, this can only
1866 * be done through Netlink calls assuming kernel drivers are
1867 * recent enough to support them.
1869 * In the event of identification failure through Netlink,
1870 * try again through sysfs, then:
1872 * 1. A single IB device matches (nd == 1) with single
1873 * port (np=0/1) and is not a representor, assume
1874 * no switch support.
1876 * 2. Otherwise no safe assumptions can be made;
1877 * complain louder and bail out.
1880 for (i = 0; i != nd; ++i) {
1881 memset(&list[ns].info, 0, sizeof(list[ns].info));
1882 list[ns].max_port = 1;
1883 list[ns].ibv_port = 1;
1884 list[ns].ibv_dev = ibv_match[i];
1885 list[ns].eth_dev = NULL;
1886 list[ns].ifindex = 0;
1888 list[ns].ifindex = mlx5_nl_ifindex
1889 (nl_rdma, list[ns].ibv_dev->name, 1);
1890 if (!list[ns].ifindex) {
1892 * No network interface index found for the
1893 * specified device, it means there it is not
1894 * a representor/master.
1900 ret = mlx5_nl_switch_info
1904 if (ret || (!list[ns].info.representor &&
1905 !list[ns].info.master)) {
1907 * We failed to recognize representors with
1908 * Netlink, let's try to perform the task
1911 ret = mlx5_sysfs_switch_info
1915 if (!ret && (list[ns].info.representor ^
1916 list[ns].info.master)) {
1918 } else if ((nd == 1) &&
1919 !list[ns].info.representor &&
1920 !list[ns].info.master) {
1922 * Single IB device with
1923 * one physical port and
1924 * attached network device.
1925 * May be SRIOV is not enabled
1926 * or there is no representors.
1928 DRV_LOG(INFO, "no E-Switch support detected");
1935 "unable to recognize master/representors"
1936 " on the multiple IB devices");
1944 * Sort list to probe devices in natural order for users convenience
1945 * (i.e. master first, then representors from lowest to highest ID).
1947 qsort(list, ns, sizeof(*list), mlx5_dev_spawn_data_cmp);
1948 /* Default configuration. */
1949 dev_config = (struct mlx5_dev_config){
1951 .mps = MLX5_ARG_UNSET,
1954 .txq_inline = MLX5_ARG_UNSET,
1955 .txqs_inline = MLX5_ARG_UNSET,
1956 .txqs_vec = MLX5_ARG_UNSET,
1957 .inline_max_packet_sz = MLX5_ARG_UNSET,
1959 .mr_ext_memseg_en = 1,
1961 .enabled = 0, /* Disabled by default. */
1962 .stride_num_n = MLX5_MPRQ_STRIDE_NUM_N,
1963 .max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN,
1964 .min_rxqs_num = MLX5_MPRQ_MIN_RXQS,
1967 /* Device specific configuration. */
1968 switch (pci_dev->id.device_id) {
1969 case PCI_DEVICE_ID_MELLANOX_CONNECTX5BF:
1970 dev_config.txqs_vec = MLX5_VPMD_MAX_TXQS_BLUEFIELD;
1972 case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF:
1973 case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF:
1974 case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF:
1975 case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF:
1981 /* Set architecture-dependent default value if unset. */
1982 if (dev_config.txqs_vec == MLX5_ARG_UNSET)
1983 dev_config.txqs_vec = MLX5_VPMD_MAX_TXQS;
1984 for (i = 0; i != ns; ++i) {
1987 list[i].eth_dev = mlx5_dev_spawn(&pci_dev->device,
1990 if (!list[i].eth_dev) {
1991 if (rte_errno != EBUSY && rte_errno != EEXIST)
1993 /* Device is disabled or already spawned. Ignore it. */
1996 restore = list[i].eth_dev->data->dev_flags;
1997 rte_eth_copy_pci_info(list[i].eth_dev, pci_dev);
1998 /* Restore non-PCI flags cleared by the above call. */
1999 list[i].eth_dev->data->dev_flags |= restore;
2000 rte_eth_dev_probing_finish(list[i].eth_dev);
2004 "probe of PCI device " PCI_PRI_FMT " aborted after"
2005 " encountering an error: %s",
2006 pci_dev->addr.domain, pci_dev->addr.bus,
2007 pci_dev->addr.devid, pci_dev->addr.function,
2008 strerror(rte_errno));
2012 if (!list[i].eth_dev)
2014 mlx5_dev_close(list[i].eth_dev);
2015 /* mac_addrs must not be freed because in dev_private */
2016 list[i].eth_dev->data->mac_addrs = NULL;
2017 claim_zero(rte_eth_dev_release_port(list[i].eth_dev));
2019 /* Restore original error. */
2026 * Do the routine cleanup:
2027 * - close opened Netlink sockets
2028 * - free the Infiniband device list
2035 mlx5_glue->free_device_list(ibv_list);
2040 * DPDK callback to remove a PCI device.
2042 * This function removes all Ethernet devices belong to a given PCI device.
2044 * @param[in] pci_dev
2045 * Pointer to the PCI device.
2048 * 0 on success, the function cannot fail.
2051 mlx5_pci_remove(struct rte_pci_device *pci_dev)
2054 struct rte_eth_dev *port;
2056 for (port_id = 0; port_id < RTE_MAX_ETHPORTS; port_id++) {
2057 port = &rte_eth_devices[port_id];
2058 if (port->state != RTE_ETH_DEV_UNUSED &&
2059 port->device == &pci_dev->device)
2060 rte_eth_dev_close(port_id);
2065 static const struct rte_pci_id mlx5_pci_id_map[] = {
2067 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2068 PCI_DEVICE_ID_MELLANOX_CONNECTX4)
2071 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2072 PCI_DEVICE_ID_MELLANOX_CONNECTX4VF)
2075 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2076 PCI_DEVICE_ID_MELLANOX_CONNECTX4LX)
2079 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2080 PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF)
2083 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2084 PCI_DEVICE_ID_MELLANOX_CONNECTX5)
2087 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2088 PCI_DEVICE_ID_MELLANOX_CONNECTX5VF)
2091 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2092 PCI_DEVICE_ID_MELLANOX_CONNECTX5EX)
2095 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2096 PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF)
2099 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2100 PCI_DEVICE_ID_MELLANOX_CONNECTX5BF)
2103 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2104 PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF)
2107 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2108 PCI_DEVICE_ID_MELLANOX_CONNECTX6)
2111 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
2112 PCI_DEVICE_ID_MELLANOX_CONNECTX6VF)
2119 static struct rte_pci_driver mlx5_driver = {
2121 .name = MLX5_DRIVER_NAME
2123 .id_table = mlx5_pci_id_map,
2124 .probe = mlx5_pci_probe,
2125 .remove = mlx5_pci_remove,
2126 .dma_map = mlx5_dma_map,
2127 .dma_unmap = mlx5_dma_unmap,
2128 .drv_flags = (RTE_PCI_DRV_INTR_LSC | RTE_PCI_DRV_INTR_RMV |
2129 RTE_PCI_DRV_PROBE_AGAIN),
2132 #ifdef RTE_IBVERBS_LINK_DLOPEN
2135 * Suffix RTE_EAL_PMD_PATH with "-glue".
2137 * This function performs a sanity check on RTE_EAL_PMD_PATH before
2138 * suffixing its last component.
2141 * Output buffer, should be large enough otherwise NULL is returned.
2146 * Pointer to @p buf or @p NULL in case suffix cannot be appended.
2149 mlx5_glue_path(char *buf, size_t size)
2151 static const char *const bad[] = { "/", ".", "..", NULL };
2152 const char *path = RTE_EAL_PMD_PATH;
2153 size_t len = strlen(path);
2157 while (len && path[len - 1] == '/')
2159 for (off = len; off && path[off - 1] != '/'; --off)
2161 for (i = 0; bad[i]; ++i)
2162 if (!strncmp(path + off, bad[i], (int)(len - off)))
2164 i = snprintf(buf, size, "%.*s-glue", (int)len, path);
2165 if (i == -1 || (size_t)i >= size)
2170 "unable to append \"-glue\" to last component of"
2171 " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\"),"
2172 " please re-configure DPDK");
2177 * Initialization routine for run-time dependency on rdma-core.
2180 mlx5_glue_init(void)
2182 char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")];
2183 const char *path[] = {
2185 * A basic security check is necessary before trusting
2186 * MLX5_GLUE_PATH, which may override RTE_EAL_PMD_PATH.
2188 (geteuid() == getuid() && getegid() == getgid() ?
2189 getenv("MLX5_GLUE_PATH") : NULL),
2191 * When RTE_EAL_PMD_PATH is set, use its glue-suffixed
2192 * variant, otherwise let dlopen() look up libraries on its
2195 (*RTE_EAL_PMD_PATH ?
2196 mlx5_glue_path(glue_path, sizeof(glue_path)) : ""),
2199 void *handle = NULL;
2203 while (!handle && i != RTE_DIM(path)) {
2212 end = strpbrk(path[i], ":;");
2214 end = path[i] + strlen(path[i]);
2215 len = end - path[i];
2220 ret = snprintf(name, sizeof(name), "%.*s%s" MLX5_GLUE,
2222 (!len || *(end - 1) == '/') ? "" : "/");
2225 if (sizeof(name) != (size_t)ret + 1)
2227 DRV_LOG(DEBUG, "looking for rdma-core glue as \"%s\"",
2229 handle = dlopen(name, RTLD_LAZY);
2240 DRV_LOG(WARNING, "cannot load glue library: %s", dlmsg);
2243 sym = dlsym(handle, "mlx5_glue");
2244 if (!sym || !*sym) {
2248 DRV_LOG(ERR, "cannot resolve glue symbol: %s", dlmsg);
2257 "cannot initialize PMD due to missing run-time dependency on"
2258 " rdma-core libraries (libibverbs, libmlx5)");
2265 * Driver initialization routine.
2267 RTE_INIT(rte_mlx5_pmd_init)
2269 /* Initialize driver log type. */
2270 mlx5_logtype = rte_log_register("pmd.net.mlx5");
2271 if (mlx5_logtype >= 0)
2272 rte_log_set_level(mlx5_logtype, RTE_LOG_NOTICE);
2274 /* Build the static tables for Verbs conversion. */
2275 mlx5_set_ptype_table();
2276 mlx5_set_cksum_table();
2277 mlx5_set_swp_types_table();
2279 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
2280 * huge pages. Calling ibv_fork_init() during init allows
2281 * applications to use fork() safely for purposes other than
2282 * using this PMD, which is not supported in forked processes.
2284 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
2285 /* Match the size of Rx completion entry to the size of a cacheline. */
2286 if (RTE_CACHE_LINE_SIZE == 128)
2287 setenv("MLX5_CQE_SIZE", "128", 0);
2289 * MLX5_DEVICE_FATAL_CLEANUP tells ibv_destroy functions to
2290 * cleanup all the Verbs resources even when the device was removed.
2292 setenv("MLX5_DEVICE_FATAL_CLEANUP", "1", 1);
2293 #ifdef RTE_IBVERBS_LINK_DLOPEN
2294 if (mlx5_glue_init())
2299 /* Glue structure must not contain any NULL pointers. */
2303 for (i = 0; i != sizeof(*mlx5_glue) / sizeof(void *); ++i)
2304 assert(((const void *const *)mlx5_glue)[i]);
2307 if (strcmp(mlx5_glue->version, MLX5_GLUE_VERSION)) {
2309 "rdma-core glue \"%s\" mismatch: \"%s\" is required",
2310 mlx5_glue->version, MLX5_GLUE_VERSION);
2313 mlx5_glue->fork_init();
2314 rte_pci_register(&mlx5_driver);
2317 RTE_PMD_EXPORT_NAME(net_mlx5, __COUNTER__);
2318 RTE_PMD_REGISTER_PCI_TABLE(net_mlx5, mlx5_pci_id_map);
2319 RTE_PMD_REGISTER_KMOD_DEP(net_mlx5, "* ib_uverbs & mlx5_core & mlx5_ib");