1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2020 Mellanox Technologies, Ltd
13 #include <linux/rtnetlink.h>
14 #include <linux/sockios.h>
15 #include <linux/ethtool.h>
18 #include <rte_malloc.h>
19 #include <rte_ethdev_driver.h>
20 #include <rte_ethdev_pci.h>
22 #include <rte_bus_pci.h>
23 #include <rte_common.h>
24 #include <rte_kvargs.h>
25 #include <rte_rwlock.h>
26 #include <rte_spinlock.h>
27 #include <rte_string_fns.h>
28 #include <rte_alarm.h>
29 #include <rte_eal_paging.h>
31 #include <mlx5_glue.h>
32 #include <mlx5_devx_cmds.h>
33 #include <mlx5_common.h>
34 #include <mlx5_common_mp.h>
35 #include <mlx5_common_mr.h>
36 #include <mlx5_malloc.h>
38 #include "mlx5_defs.h"
40 #include "mlx5_common_os.h"
41 #include "mlx5_utils.h"
42 #include "mlx5_rxtx.h"
43 #include "mlx5_autoconf.h"
45 #include "mlx5_flow.h"
46 #include "rte_pmd_mlx5.h"
47 #include "mlx5_verbs.h"
49 #include "mlx5_devx.h"
51 #define MLX5_TAGS_HLIST_ARRAY_SIZE 8192
53 #ifndef HAVE_IBV_MLX5_MOD_MPW
54 #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2)
55 #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3)
58 #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP
59 #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4)
62 static const char *MZ_MLX5_PMD_SHARED_DATA = "mlx5_pmd_shared_data";
64 /* Spinlock for mlx5_shared_data allocation. */
65 static rte_spinlock_t mlx5_shared_data_lock = RTE_SPINLOCK_INITIALIZER;
67 /* Process local data for secondary processes. */
68 static struct mlx5_local_data mlx5_local_data;
71 * Set the completion channel file descriptor interrupt as non-blocking.
74 * Pointer to RQ channel object, which includes the channel fd
77 * The file descriptor (representing the intetrrupt) used in this channel.
80 * 0 on successfully setting the fd to non-blocking, non-zero otherwise.
83 mlx5_os_set_nonblock_channel_fd(int fd)
87 flags = fcntl(fd, F_GETFL);
88 return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
92 * Get mlx5 device attributes. The glue function query_device_ex() is called
93 * with out parameter of type 'struct ibv_device_attr_ex *'. Then fill in mlx5
94 * device attributes from the glue out parameter.
97 * Pointer to ibv context.
100 * Pointer to mlx5 device attributes.
103 * 0 on success, non zero error number otherwise
106 mlx5_os_get_dev_attr(void *ctx, struct mlx5_dev_attr *device_attr)
109 struct ibv_device_attr_ex attr_ex;
110 memset(device_attr, 0, sizeof(*device_attr));
111 err = mlx5_glue->query_device_ex(ctx, NULL, &attr_ex);
115 device_attr->device_cap_flags_ex = attr_ex.device_cap_flags_ex;
116 device_attr->max_qp_wr = attr_ex.orig_attr.max_qp_wr;
117 device_attr->max_sge = attr_ex.orig_attr.max_sge;
118 device_attr->max_cq = attr_ex.orig_attr.max_cq;
119 device_attr->max_qp = attr_ex.orig_attr.max_qp;
120 device_attr->raw_packet_caps = attr_ex.raw_packet_caps;
121 device_attr->max_rwq_indirection_table_size =
122 attr_ex.rss_caps.max_rwq_indirection_table_size;
123 device_attr->max_tso = attr_ex.tso_caps.max_tso;
124 device_attr->tso_supported_qpts = attr_ex.tso_caps.supported_qpts;
126 struct mlx5dv_context dv_attr = { .comp_mask = 0 };
127 err = mlx5_glue->dv_query_device(ctx, &dv_attr);
131 device_attr->flags = dv_attr.flags;
132 device_attr->comp_mask = dv_attr.comp_mask;
133 #ifdef HAVE_IBV_MLX5_MOD_SWP
134 device_attr->sw_parsing_offloads =
135 dv_attr.sw_parsing_caps.sw_parsing_offloads;
137 device_attr->min_single_stride_log_num_of_bytes =
138 dv_attr.striding_rq_caps.min_single_stride_log_num_of_bytes;
139 device_attr->max_single_stride_log_num_of_bytes =
140 dv_attr.striding_rq_caps.max_single_stride_log_num_of_bytes;
141 device_attr->min_single_wqe_log_num_of_strides =
142 dv_attr.striding_rq_caps.min_single_wqe_log_num_of_strides;
143 device_attr->max_single_wqe_log_num_of_strides =
144 dv_attr.striding_rq_caps.max_single_wqe_log_num_of_strides;
145 device_attr->stride_supported_qpts =
146 dv_attr.striding_rq_caps.supported_qpts;
147 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
148 device_attr->tunnel_offloads_caps = dv_attr.tunnel_offloads_caps;
155 * Verbs callback to allocate a memory. This function should allocate the space
156 * according to the size provided residing inside a huge page.
157 * Please note that all allocation must respect the alignment from libmlx5
158 * (i.e. currently rte_mem_page_size()).
161 * The size in bytes of the memory to allocate.
163 * A pointer to the callback data.
166 * Allocated buffer, NULL otherwise and rte_errno is set.
169 mlx5_alloc_verbs_buf(size_t size, void *data)
171 struct mlx5_priv *priv = data;
173 unsigned int socket = SOCKET_ID_ANY;
174 size_t alignment = rte_mem_page_size();
175 if (alignment == (size_t)-1) {
176 DRV_LOG(ERR, "Failed to get mem page size");
181 if (priv->verbs_alloc_ctx.type == MLX5_VERBS_ALLOC_TYPE_TX_QUEUE) {
182 const struct mlx5_txq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
184 socket = ctrl->socket;
185 } else if (priv->verbs_alloc_ctx.type ==
186 MLX5_VERBS_ALLOC_TYPE_RX_QUEUE) {
187 const struct mlx5_rxq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
189 socket = ctrl->socket;
191 MLX5_ASSERT(data != NULL);
192 ret = mlx5_malloc(0, size, alignment, socket);
199 * Verbs callback to free a memory.
202 * A pointer to the memory to free.
204 * A pointer to the callback data.
207 mlx5_free_verbs_buf(void *ptr, void *data __rte_unused)
209 MLX5_ASSERT(data != NULL);
214 * Initialize DR related data within private structure.
215 * Routine checks the reference counter and does actual
216 * resources creation/initialization only if counter is zero.
219 * Pointer to the private device data structure.
222 * Zero on success, positive error code otherwise.
225 mlx5_alloc_shared_dr(struct mlx5_priv *priv)
227 struct mlx5_dev_ctx_shared *sh = priv->sh;
228 char s[MLX5_HLIST_NAMESIZE];
232 err = mlx5_alloc_table_hash_list(priv);
234 DRV_LOG(DEBUG, "sh->flow_tbls[%p] already created, reuse\n",
235 (void *)sh->flow_tbls);
238 /* Create tags hash list table. */
239 snprintf(s, sizeof(s), "%s_tags", sh->ibdev_name);
240 sh->tag_table = mlx5_hlist_create(s, MLX5_TAGS_HLIST_ARRAY_SIZE);
241 if (!sh->tag_table) {
242 DRV_LOG(ERR, "tags with hash creation failed.");
246 snprintf(s, sizeof(s), "%s_hdr_modify", sh->ibdev_name);
247 sh->modify_cmds = mlx5_hlist_create(s, MLX5_FLOW_HDR_MODIFY_HTABLE_SZ);
248 if (!sh->modify_cmds) {
249 DRV_LOG(ERR, "hdr modify hash creation failed");
253 snprintf(s, sizeof(s), "%s_encaps_decaps", sh->ibdev_name);
254 sh->encaps_decaps = mlx5_hlist_create(s,
255 MLX5_FLOW_ENCAP_DECAP_HTABLE_SZ);
256 if (!sh->encaps_decaps) {
257 DRV_LOG(ERR, "encap decap hash creation failed");
261 #ifdef HAVE_MLX5DV_DR
265 /* Shared DV/DR structures is already initialized. */
270 /* Reference counter is zero, we should initialize structures. */
271 domain = mlx5_glue->dr_create_domain(sh->ctx,
272 MLX5DV_DR_DOMAIN_TYPE_NIC_RX);
274 DRV_LOG(ERR, "ingress mlx5dv_dr_create_domain failed");
278 sh->rx_domain = domain;
279 domain = mlx5_glue->dr_create_domain(sh->ctx,
280 MLX5DV_DR_DOMAIN_TYPE_NIC_TX);
282 DRV_LOG(ERR, "egress mlx5dv_dr_create_domain failed");
286 pthread_mutex_init(&sh->dv_mutex, NULL);
287 sh->tx_domain = domain;
288 #ifdef HAVE_MLX5DV_DR_ESWITCH
289 if (priv->config.dv_esw_en) {
290 domain = mlx5_glue->dr_create_domain
291 (sh->ctx, MLX5DV_DR_DOMAIN_TYPE_FDB);
293 DRV_LOG(ERR, "FDB mlx5dv_dr_create_domain failed");
297 sh->fdb_domain = domain;
298 sh->esw_drop_action = mlx5_glue->dr_create_flow_action_drop();
301 if (priv->config.reclaim_mode == MLX5_RCM_AGGR) {
302 mlx5_glue->dr_reclaim_domain_memory(sh->rx_domain, 1);
303 mlx5_glue->dr_reclaim_domain_memory(sh->tx_domain, 1);
305 mlx5_glue->dr_reclaim_domain_memory(sh->fdb_domain, 1);
307 sh->pop_vlan_action = mlx5_glue->dr_create_flow_action_pop_vlan();
308 #endif /* HAVE_MLX5DV_DR */
313 /* Rollback the created objects. */
315 mlx5_glue->dr_destroy_domain(sh->rx_domain);
316 sh->rx_domain = NULL;
319 mlx5_glue->dr_destroy_domain(sh->tx_domain);
320 sh->tx_domain = NULL;
322 if (sh->fdb_domain) {
323 mlx5_glue->dr_destroy_domain(sh->fdb_domain);
324 sh->fdb_domain = NULL;
326 if (sh->esw_drop_action) {
327 mlx5_glue->destroy_flow_action(sh->esw_drop_action);
328 sh->esw_drop_action = NULL;
330 if (sh->pop_vlan_action) {
331 mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
332 sh->pop_vlan_action = NULL;
334 if (sh->encaps_decaps) {
335 mlx5_hlist_destroy(sh->encaps_decaps, NULL, NULL);
336 sh->encaps_decaps = NULL;
338 if (sh->modify_cmds) {
339 mlx5_hlist_destroy(sh->modify_cmds, NULL, NULL);
340 sh->modify_cmds = NULL;
343 /* tags should be destroyed with flow before. */
344 mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
345 sh->tag_table = NULL;
347 mlx5_free_table_hash_list(priv);
352 * Destroy DR related data within private structure.
355 * Pointer to the private device data structure.
358 mlx5_os_free_shared_dr(struct mlx5_priv *priv)
360 struct mlx5_dev_ctx_shared *sh;
362 if (!priv->dr_shared)
367 #ifdef HAVE_MLX5DV_DR
368 MLX5_ASSERT(sh->dv_refcnt);
369 if (sh->dv_refcnt && --sh->dv_refcnt)
372 mlx5_glue->dr_destroy_domain(sh->rx_domain);
373 sh->rx_domain = NULL;
376 mlx5_glue->dr_destroy_domain(sh->tx_domain);
377 sh->tx_domain = NULL;
379 #ifdef HAVE_MLX5DV_DR_ESWITCH
380 if (sh->fdb_domain) {
381 mlx5_glue->dr_destroy_domain(sh->fdb_domain);
382 sh->fdb_domain = NULL;
384 if (sh->esw_drop_action) {
385 mlx5_glue->destroy_flow_action(sh->esw_drop_action);
386 sh->esw_drop_action = NULL;
389 if (sh->pop_vlan_action) {
390 mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
391 sh->pop_vlan_action = NULL;
393 pthread_mutex_destroy(&sh->dv_mutex);
394 #endif /* HAVE_MLX5DV_DR */
395 if (sh->encaps_decaps) {
396 mlx5_hlist_destroy(sh->encaps_decaps, NULL, NULL);
397 sh->encaps_decaps = NULL;
399 if (sh->modify_cmds) {
400 mlx5_hlist_destroy(sh->modify_cmds, NULL, NULL);
401 sh->modify_cmds = NULL;
404 /* tags should be destroyed with flow before. */
405 mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
406 sh->tag_table = NULL;
408 mlx5_free_table_hash_list(priv);
412 * Initialize shared data between primary and secondary process.
414 * A memzone is reserved by primary process and secondary processes attach to
418 * 0 on success, a negative errno value otherwise and rte_errno is set.
421 mlx5_init_shared_data(void)
423 const struct rte_memzone *mz;
426 rte_spinlock_lock(&mlx5_shared_data_lock);
427 if (mlx5_shared_data == NULL) {
428 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
429 /* Allocate shared memory. */
430 mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA,
431 sizeof(*mlx5_shared_data),
435 "Cannot allocate mlx5 shared data");
439 mlx5_shared_data = mz->addr;
440 memset(mlx5_shared_data, 0, sizeof(*mlx5_shared_data));
441 rte_spinlock_init(&mlx5_shared_data->lock);
443 /* Lookup allocated shared memory. */
444 mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA);
447 "Cannot attach mlx5 shared data");
451 mlx5_shared_data = mz->addr;
452 memset(&mlx5_local_data, 0, sizeof(mlx5_local_data));
456 rte_spinlock_unlock(&mlx5_shared_data_lock);
461 * PMD global initialization.
463 * Independent from individual device, this function initializes global
464 * per-PMD data structures distinguishing primary and secondary processes.
465 * Hence, each initialization is called once per a process.
468 * 0 on success, a negative errno value otherwise and rte_errno is set.
473 struct mlx5_shared_data *sd;
474 struct mlx5_local_data *ld = &mlx5_local_data;
477 if (mlx5_init_shared_data())
479 sd = mlx5_shared_data;
481 rte_spinlock_lock(&sd->lock);
482 switch (rte_eal_process_type()) {
483 case RTE_PROC_PRIMARY:
486 LIST_INIT(&sd->mem_event_cb_list);
487 rte_rwlock_init(&sd->mem_event_rwlock);
488 rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
489 mlx5_mr_mem_event_cb, NULL);
490 ret = mlx5_mp_init_primary(MLX5_MP_NAME,
491 mlx5_mp_os_primary_handle);
494 sd->init_done = true;
496 case RTE_PROC_SECONDARY:
499 ret = mlx5_mp_init_secondary(MLX5_MP_NAME,
500 mlx5_mp_os_secondary_handle);
504 ld->init_done = true;
510 rte_spinlock_unlock(&sd->lock);
515 * Create the Tx queue DevX/Verbs object.
518 * Pointer to Ethernet device.
520 * Queue index in DPDK Tx queue array.
523 * The DevX/Verbs object initialized, NULL otherwise and rte_errno is set.
525 static struct mlx5_txq_obj *
526 mlx5_os_txq_obj_new(struct rte_eth_dev *dev, uint16_t idx)
528 struct mlx5_priv *priv = dev->data->dev_private;
529 struct mlx5_dev_config *config = &priv->config;
530 struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
531 struct mlx5_txq_ctrl *txq_ctrl =
532 container_of(txq_data, struct mlx5_txq_ctrl, txq);
535 * When DevX is supported and DV flow is enable, and dest tir is enable,
536 * hairpin functions use DevX API.
537 * When, in addition, DV E-Switch is enable and DevX uar offset is
538 * supported, all Tx functions also use DevX API.
539 * Otherwise, all Tx functions use Verbs API.
541 if (config->devx && config->dv_flow_en && config->dest_tir) {
542 if (txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN)
543 return mlx5_txq_devx_obj_new(dev, idx);
544 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET
545 if (config->dv_esw_en)
546 return mlx5_txq_devx_obj_new(dev, idx);
549 return mlx5_txq_ibv_obj_new(dev, idx);
553 * Release an Tx DevX/verbs queue object.
556 * DevX/Verbs Tx queue object.
559 mlx5_os_txq_obj_release(struct mlx5_txq_obj *txq_obj)
561 struct mlx5_dev_config *config = &txq_obj->txq_ctrl->priv->config;
563 if (config->devx && config->dv_flow_en && config->dest_tir) {
564 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET
565 if (config->dv_esw_en) {
566 mlx5_txq_devx_obj_release(txq_obj);
570 if (txq_obj->txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN) {
571 mlx5_txq_devx_obj_release(txq_obj);
575 mlx5_txq_ibv_obj_release(txq_obj);
579 * Spawn an Ethernet device from Verbs information.
582 * Backing DPDK device.
584 * Verbs device parameters (name, port, switch_info) to spawn.
586 * Device configuration parameters.
589 * A valid Ethernet device object on success, NULL otherwise and rte_errno
590 * is set. The following errors are defined:
592 * EBUSY: device is not supposed to be spawned.
593 * EEXIST: device is already spawned
595 static struct rte_eth_dev *
596 mlx5_dev_spawn(struct rte_device *dpdk_dev,
597 struct mlx5_dev_spawn_data *spawn,
598 struct mlx5_dev_config *config)
600 const struct mlx5_switch_info *switch_info = &spawn->info;
601 struct mlx5_dev_ctx_shared *sh = NULL;
602 struct ibv_port_attr port_attr;
603 struct mlx5dv_context dv_attr = { .comp_mask = 0 };
604 struct rte_eth_dev *eth_dev = NULL;
605 struct mlx5_priv *priv = NULL;
607 unsigned int hw_padding = 0;
609 unsigned int cqe_comp;
610 unsigned int cqe_pad = 0;
611 unsigned int tunnel_en = 0;
612 unsigned int mpls_en = 0;
613 unsigned int swp = 0;
614 unsigned int mprq = 0;
615 unsigned int mprq_min_stride_size_n = 0;
616 unsigned int mprq_max_stride_size_n = 0;
617 unsigned int mprq_min_stride_num_n = 0;
618 unsigned int mprq_max_stride_num_n = 0;
619 struct rte_ether_addr mac;
620 char name[RTE_ETH_NAME_MAX_LEN];
621 int own_domain_id = 0;
624 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
625 struct mlx5dv_devx_port devx_port = { .comp_mask = 0 };
628 /* Determine if this port representor is supposed to be spawned. */
629 if (switch_info->representor && dpdk_dev->devargs) {
630 struct rte_eth_devargs eth_da;
632 err = rte_eth_devargs_parse(dpdk_dev->devargs->args, ð_da);
635 DRV_LOG(ERR, "failed to process device arguments: %s",
636 strerror(rte_errno));
639 for (i = 0; i < eth_da.nb_representor_ports; ++i)
640 if (eth_da.representor_ports[i] ==
641 (uint16_t)switch_info->port_name)
643 if (i == eth_da.nb_representor_ports) {
648 /* Build device name. */
649 if (spawn->pf_bond < 0) {
651 if (!switch_info->representor)
652 strlcpy(name, dpdk_dev->name, sizeof(name));
654 snprintf(name, sizeof(name), "%s_representor_%u",
655 dpdk_dev->name, switch_info->port_name);
657 /* Bonding device. */
658 if (!switch_info->representor)
659 snprintf(name, sizeof(name), "%s_%s",
661 mlx5_os_get_dev_device_name(spawn->phys_dev));
663 snprintf(name, sizeof(name), "%s_%s_representor_%u",
665 mlx5_os_get_dev_device_name(spawn->phys_dev),
666 switch_info->port_name);
668 /* check if the device is already spawned */
669 if (rte_eth_dev_get_port_by_name(name, &port_id) == 0) {
673 DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name);
674 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
675 struct mlx5_mp_id mp_id;
677 eth_dev = rte_eth_dev_attach_secondary(name);
678 if (eth_dev == NULL) {
679 DRV_LOG(ERR, "can not attach rte ethdev");
683 eth_dev->device = dpdk_dev;
684 eth_dev->dev_ops = &mlx5_os_dev_sec_ops;
685 eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status;
686 eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status;
687 err = mlx5_proc_priv_init(eth_dev);
690 mp_id.port_id = eth_dev->data->port_id;
691 strlcpy(mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
692 /* Receive command fd from primary process */
693 err = mlx5_mp_req_verbs_cmd_fd(&mp_id);
696 /* Remap UAR for Tx queues. */
697 err = mlx5_tx_uar_init_secondary(eth_dev, err);
701 * Ethdev pointer is still required as input since
702 * the primary device is not accessible from the
705 eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev);
706 eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev);
709 mlx5_dev_close(eth_dev);
713 * Some parameters ("tx_db_nc" in particularly) are needed in
714 * advance to create dv/verbs device context. We proceed the
715 * devargs here to get ones, and later proceed devargs again
716 * to override some hardware settings.
718 err = mlx5_args(config, dpdk_dev->devargs);
721 DRV_LOG(ERR, "failed to process device arguments: %s",
722 strerror(rte_errno));
725 mlx5_malloc_mem_select(config->sys_mem_en);
726 sh = mlx5_alloc_shared_dev_ctx(spawn, config);
729 config->devx = sh->devx;
730 #ifdef HAVE_MLX5DV_DR_ACTION_DEST_DEVX_TIR
731 config->dest_tir = 1;
733 #ifdef HAVE_IBV_MLX5_MOD_SWP
734 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP;
737 * Multi-packet send is supported by ConnectX-4 Lx PF as well
738 * as all ConnectX-5 devices.
740 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
741 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS;
743 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
744 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ;
746 mlx5_glue->dv_query_device(sh->ctx, &dv_attr);
747 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) {
748 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) {
749 DRV_LOG(DEBUG, "enhanced MPW is supported");
750 mps = MLX5_MPW_ENHANCED;
752 DRV_LOG(DEBUG, "MPW is supported");
756 DRV_LOG(DEBUG, "MPW isn't supported");
757 mps = MLX5_MPW_DISABLED;
759 #ifdef HAVE_IBV_MLX5_MOD_SWP
760 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP)
761 swp = dv_attr.sw_parsing_caps.sw_parsing_offloads;
762 DRV_LOG(DEBUG, "SWP support: %u", swp);
765 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
766 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) {
767 struct mlx5dv_striding_rq_caps mprq_caps =
768 dv_attr.striding_rq_caps;
770 DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d",
771 mprq_caps.min_single_stride_log_num_of_bytes);
772 DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d",
773 mprq_caps.max_single_stride_log_num_of_bytes);
774 DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d",
775 mprq_caps.min_single_wqe_log_num_of_strides);
776 DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d",
777 mprq_caps.max_single_wqe_log_num_of_strides);
778 DRV_LOG(DEBUG, "\tsupported_qpts: %d",
779 mprq_caps.supported_qpts);
780 DRV_LOG(DEBUG, "device supports Multi-Packet RQ");
782 mprq_min_stride_size_n =
783 mprq_caps.min_single_stride_log_num_of_bytes;
784 mprq_max_stride_size_n =
785 mprq_caps.max_single_stride_log_num_of_bytes;
786 mprq_min_stride_num_n =
787 mprq_caps.min_single_wqe_log_num_of_strides;
788 mprq_max_stride_num_n =
789 mprq_caps.max_single_wqe_log_num_of_strides;
792 if (RTE_CACHE_LINE_SIZE == 128 &&
793 !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP))
797 config->cqe_comp = cqe_comp;
798 #ifdef HAVE_IBV_MLX5_MOD_CQE_128B_PAD
799 /* Whether device supports 128B Rx CQE padding. */
800 cqe_pad = RTE_CACHE_LINE_SIZE == 128 &&
801 (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_PAD);
803 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
804 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) {
805 tunnel_en = ((dv_attr.tunnel_offloads_caps &
806 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) &&
807 (dv_attr.tunnel_offloads_caps &
808 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE) &&
809 (dv_attr.tunnel_offloads_caps &
810 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GENEVE));
812 DRV_LOG(DEBUG, "tunnel offloading is %ssupported",
813 tunnel_en ? "" : "not ");
816 "tunnel offloading disabled due to old OFED/rdma-core version");
818 config->tunnel_en = tunnel_en;
819 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
820 mpls_en = ((dv_attr.tunnel_offloads_caps &
821 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) &&
822 (dv_attr.tunnel_offloads_caps &
823 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP));
824 DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported",
825 mpls_en ? "" : "not ");
827 DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to"
828 " old OFED/rdma-core version or firmware configuration");
830 config->mpls_en = mpls_en;
831 /* Check port status. */
832 err = mlx5_glue->query_port(sh->ctx, spawn->phys_port, &port_attr);
834 DRV_LOG(ERR, "port query failed: %s", strerror(err));
837 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
838 DRV_LOG(ERR, "port is not configured in Ethernet mode");
842 if (port_attr.state != IBV_PORT_ACTIVE)
843 DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)",
844 mlx5_glue->port_state_str(port_attr.state),
846 /* Allocate private eth device data. */
847 priv = mlx5_malloc(MLX5_MEM_ZERO | MLX5_MEM_RTE,
849 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
851 DRV_LOG(ERR, "priv allocation failure");
856 priv->dev_port = spawn->phys_port;
857 priv->pci_dev = spawn->pci_dev;
858 priv->mtu = RTE_ETHER_MTU;
859 priv->mp_id.port_id = port_id;
860 strlcpy(priv->mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
861 /* Some internal functions rely on Netlink sockets, open them now. */
862 priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA);
863 priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE);
864 priv->representor = !!switch_info->representor;
865 priv->master = !!switch_info->master;
866 priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
867 priv->vport_meta_tag = 0;
868 priv->vport_meta_mask = 0;
869 priv->pf_bond = spawn->pf_bond;
870 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
872 * The DevX port query API is implemented. E-Switch may use
873 * either vport or reg_c[0] metadata register to match on
874 * vport index. The engaged part of metadata register is
877 if (switch_info->representor || switch_info->master) {
878 devx_port.comp_mask = MLX5DV_DEVX_PORT_VPORT |
879 MLX5DV_DEVX_PORT_MATCH_REG_C_0;
880 err = mlx5_glue->devx_port_query(sh->ctx, spawn->phys_port,
884 "can't query devx port %d on device %s",
886 mlx5_os_get_dev_device_name(spawn->phys_dev));
887 devx_port.comp_mask = 0;
890 if (devx_port.comp_mask & MLX5DV_DEVX_PORT_MATCH_REG_C_0) {
891 priv->vport_meta_tag = devx_port.reg_c_0.value;
892 priv->vport_meta_mask = devx_port.reg_c_0.mask;
893 if (!priv->vport_meta_mask) {
894 DRV_LOG(ERR, "vport zero mask for port %d"
895 " on bonding device %s",
897 mlx5_os_get_dev_device_name
902 if (priv->vport_meta_tag & ~priv->vport_meta_mask) {
903 DRV_LOG(ERR, "invalid vport tag for port %d"
904 " on bonding device %s",
906 mlx5_os_get_dev_device_name
912 if (devx_port.comp_mask & MLX5DV_DEVX_PORT_VPORT) {
913 priv->vport_id = devx_port.vport_num;
914 } else if (spawn->pf_bond >= 0) {
915 DRV_LOG(ERR, "can't deduce vport index for port %d"
916 " on bonding device %s",
918 mlx5_os_get_dev_device_name(spawn->phys_dev));
922 /* Suppose vport index in compatible way. */
923 priv->vport_id = switch_info->representor ?
924 switch_info->port_name + 1 : -1;
928 * Kernel/rdma_core support single E-Switch per PF configurations
929 * only and vport_id field contains the vport index for
930 * associated VF, which is deduced from representor port name.
931 * For example, let's have the IB device port 10, it has
932 * attached network device eth0, which has port name attribute
933 * pf0vf2, we can deduce the VF number as 2, and set vport index
934 * as 3 (2+1). This assigning schema should be changed if the
935 * multiple E-Switch instances per PF configurations or/and PCI
936 * subfunctions are added.
938 priv->vport_id = switch_info->representor ?
939 switch_info->port_name + 1 : -1;
941 /* representor_id field keeps the unmodified VF index. */
942 priv->representor_id = switch_info->representor ?
943 switch_info->port_name : -1;
945 * Look for sibling devices in order to reuse their switch domain
946 * if any, otherwise allocate one.
948 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
949 const struct mlx5_priv *opriv =
950 rte_eth_devices[port_id].data->dev_private;
953 opriv->sh != priv->sh ||
955 RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID)
957 priv->domain_id = opriv->domain_id;
960 if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
961 err = rte_eth_switch_domain_alloc(&priv->domain_id);
964 DRV_LOG(ERR, "unable to allocate switch domain: %s",
965 strerror(rte_errno));
970 /* Override some values set by hardware configuration. */
971 mlx5_args(config, dpdk_dev->devargs);
972 err = mlx5_dev_check_sibling_config(priv, config);
975 config->hw_csum = !!(sh->device_attr.device_cap_flags_ex &
976 IBV_DEVICE_RAW_IP_CSUM);
977 DRV_LOG(DEBUG, "checksum offloading is %ssupported",
978 (config->hw_csum ? "" : "not "));
979 #if !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) && \
980 !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45)
981 DRV_LOG(DEBUG, "counters are not supported");
983 #if !defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_MLX5DV_DR)
984 if (config->dv_flow_en) {
985 DRV_LOG(WARNING, "DV flow is not supported");
986 config->dv_flow_en = 0;
989 config->ind_table_max_size =
990 sh->device_attr.max_rwq_indirection_table_size;
992 * Remove this check once DPDK supports larger/variable
993 * indirection tables.
995 if (config->ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512)
996 config->ind_table_max_size = ETH_RSS_RETA_SIZE_512;
997 DRV_LOG(DEBUG, "maximum Rx indirection table size is %u",
998 config->ind_table_max_size);
999 config->hw_vlan_strip = !!(sh->device_attr.raw_packet_caps &
1000 IBV_RAW_PACKET_CAP_CVLAN_STRIPPING);
1001 DRV_LOG(DEBUG, "VLAN stripping is %ssupported",
1002 (config->hw_vlan_strip ? "" : "not "));
1003 config->hw_fcs_strip = !!(sh->device_attr.raw_packet_caps &
1004 IBV_RAW_PACKET_CAP_SCATTER_FCS);
1005 #if defined(HAVE_IBV_WQ_FLAG_RX_END_PADDING)
1006 hw_padding = !!sh->device_attr.rx_pad_end_addr_align;
1007 #elif defined(HAVE_IBV_WQ_FLAGS_PCI_WRITE_END_PADDING)
1008 hw_padding = !!(sh->device_attr.device_cap_flags_ex &
1009 IBV_DEVICE_PCI_WRITE_END_PADDING);
1011 if (config->hw_padding && !hw_padding) {
1012 DRV_LOG(DEBUG, "Rx end alignment padding isn't supported");
1013 config->hw_padding = 0;
1014 } else if (config->hw_padding) {
1015 DRV_LOG(DEBUG, "Rx end alignment padding is enabled");
1017 config->tso = (sh->device_attr.max_tso > 0 &&
1018 (sh->device_attr.tso_supported_qpts &
1019 (1 << IBV_QPT_RAW_PACKET)));
1021 config->tso_max_payload_sz = sh->device_attr.max_tso;
1023 * MPW is disabled by default, while the Enhanced MPW is enabled
1026 if (config->mps == MLX5_ARG_UNSET)
1027 config->mps = (mps == MLX5_MPW_ENHANCED) ? MLX5_MPW_ENHANCED :
1030 config->mps = config->mps ? mps : MLX5_MPW_DISABLED;
1031 DRV_LOG(INFO, "%sMPS is %s",
1032 config->mps == MLX5_MPW_ENHANCED ? "enhanced " :
1033 config->mps == MLX5_MPW ? "legacy " : "",
1034 config->mps != MLX5_MPW_DISABLED ? "enabled" : "disabled");
1035 if (config->cqe_comp && !cqe_comp) {
1036 DRV_LOG(WARNING, "Rx CQE compression isn't supported");
1037 config->cqe_comp = 0;
1039 if (config->cqe_pad && !cqe_pad) {
1040 DRV_LOG(WARNING, "Rx CQE padding isn't supported");
1041 config->cqe_pad = 0;
1042 } else if (config->cqe_pad) {
1043 DRV_LOG(INFO, "Rx CQE padding is enabled");
1046 priv->counter_fallback = 0;
1047 err = mlx5_devx_cmd_query_hca_attr(sh->ctx, &config->hca_attr);
1052 if (!config->hca_attr.flow_counters_dump)
1053 priv->counter_fallback = 1;
1054 #ifndef HAVE_IBV_DEVX_ASYNC
1055 priv->counter_fallback = 1;
1057 if (priv->counter_fallback)
1058 DRV_LOG(INFO, "Use fall-back DV counter management");
1059 /* Check for LRO support. */
1060 if (config->dest_tir && config->hca_attr.lro_cap &&
1061 config->dv_flow_en) {
1062 /* TBD check tunnel lro caps. */
1063 config->lro.supported = config->hca_attr.lro_cap;
1064 DRV_LOG(DEBUG, "Device supports LRO");
1066 * If LRO timeout is not configured by application,
1067 * use the minimal supported value.
1069 if (!config->lro.timeout)
1070 config->lro.timeout =
1071 config->hca_attr.lro_timer_supported_periods[0];
1072 DRV_LOG(DEBUG, "LRO session timeout set to %d usec",
1073 config->lro.timeout);
1075 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER)
1076 if (config->hca_attr.qos.sup &&
1077 config->hca_attr.qos.srtcm_sup &&
1078 config->dv_flow_en) {
1079 uint8_t reg_c_mask =
1080 config->hca_attr.qos.flow_meter_reg_c_ids;
1082 * Meter needs two REG_C's for color match and pre-sfx
1083 * flow match. Here get the REG_C for color match.
1084 * REG_C_0 and REG_C_1 is reserved for metadata feature.
1087 if (__builtin_popcount(reg_c_mask) < 1) {
1089 DRV_LOG(WARNING, "No available register for"
1092 priv->mtr_color_reg = ffs(reg_c_mask) - 1 +
1095 priv->mtr_reg_share =
1096 config->hca_attr.qos.flow_meter_reg_share;
1097 DRV_LOG(DEBUG, "The REG_C meter uses is %d",
1098 priv->mtr_color_reg);
1103 if (config->tx_pp) {
1104 DRV_LOG(DEBUG, "Timestamp counter frequency %u kHz",
1105 config->hca_attr.dev_freq_khz);
1106 DRV_LOG(DEBUG, "Packet pacing is %ssupported",
1107 config->hca_attr.qos.packet_pacing ? "" : "not ");
1108 DRV_LOG(DEBUG, "Cross channel ops are %ssupported",
1109 config->hca_attr.cross_channel ? "" : "not ");
1110 DRV_LOG(DEBUG, "WQE index ignore is %ssupported",
1111 config->hca_attr.wqe_index_ignore ? "" : "not ");
1112 DRV_LOG(DEBUG, "Non-wire SQ feature is %ssupported",
1113 config->hca_attr.non_wire_sq ? "" : "not ");
1114 DRV_LOG(DEBUG, "Static WQE SQ feature is %ssupported (%d)",
1115 config->hca_attr.log_max_static_sq_wq ? "" : "not ",
1116 config->hca_attr.log_max_static_sq_wq);
1117 DRV_LOG(DEBUG, "WQE rate PP mode is %ssupported",
1118 config->hca_attr.qos.wqe_rate_pp ? "" : "not ");
1119 if (!config->devx) {
1120 DRV_LOG(ERR, "DevX is required for packet pacing");
1124 if (!config->hca_attr.qos.packet_pacing) {
1125 DRV_LOG(ERR, "Packet pacing is not supported");
1129 if (!config->hca_attr.cross_channel) {
1130 DRV_LOG(ERR, "Cross channel operations are"
1131 " required for packet pacing");
1135 if (!config->hca_attr.wqe_index_ignore) {
1136 DRV_LOG(ERR, "WQE index ignore feature is"
1137 " required for packet pacing");
1141 if (!config->hca_attr.non_wire_sq) {
1142 DRV_LOG(ERR, "Non-wire SQ feature is"
1143 " required for packet pacing");
1147 if (!config->hca_attr.log_max_static_sq_wq) {
1148 DRV_LOG(ERR, "Static WQE SQ feature is"
1149 " required for packet pacing");
1153 if (!config->hca_attr.qos.wqe_rate_pp) {
1154 DRV_LOG(ERR, "WQE rate mode is required"
1155 " for packet pacing");
1159 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET
1160 DRV_LOG(ERR, "DevX does not provide UAR offset,"
1161 " can't create queues for packet pacing");
1167 uint32_t reg[MLX5_ST_SZ_DW(register_mtutc)];
1169 err = config->hca_attr.access_register_user ?
1170 mlx5_devx_cmd_register_read
1171 (sh->ctx, MLX5_REGISTER_ID_MTUTC, 0,
1172 reg, MLX5_ST_SZ_DW(register_mtutc)) : ENOTSUP;
1176 /* MTUTC register is read successfully. */
1177 ts_mode = MLX5_GET(register_mtutc, reg,
1179 if (ts_mode == MLX5_MTUTC_TIMESTAMP_MODE_REAL_TIME)
1180 config->rt_timestamp = 1;
1182 /* Kernel does not support register reading. */
1183 if (config->hca_attr.dev_freq_khz ==
1184 (NS_PER_S / MS_PER_S))
1185 config->rt_timestamp = 1;
1189 * If HW has bug working with tunnel packet decapsulation and
1190 * scatter FCS, and decapsulation is needed, clear the hw_fcs_strip
1191 * bit. Then DEV_RX_OFFLOAD_KEEP_CRC bit will not be set anymore.
1193 if (config->hca_attr.scatter_fcs_w_decap_disable && config->decap_en)
1194 config->hw_fcs_strip = 0;
1195 DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported",
1196 (config->hw_fcs_strip ? "" : "not "));
1197 if (config->mprq.enabled && mprq) {
1198 if (config->mprq.stride_num_n &&
1199 (config->mprq.stride_num_n > mprq_max_stride_num_n ||
1200 config->mprq.stride_num_n < mprq_min_stride_num_n)) {
1201 config->mprq.stride_num_n =
1202 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N,
1203 mprq_min_stride_num_n),
1204 mprq_max_stride_num_n);
1206 "the number of strides"
1207 " for Multi-Packet RQ is out of range,"
1208 " setting default value (%u)",
1209 1 << config->mprq.stride_num_n);
1211 if (config->mprq.stride_size_n &&
1212 (config->mprq.stride_size_n > mprq_max_stride_size_n ||
1213 config->mprq.stride_size_n < mprq_min_stride_size_n)) {
1214 config->mprq.stride_size_n =
1215 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_SIZE_N,
1216 mprq_min_stride_size_n),
1217 mprq_max_stride_size_n);
1219 "the size of a stride"
1220 " for Multi-Packet RQ is out of range,"
1221 " setting default value (%u)",
1222 1 << config->mprq.stride_size_n);
1224 config->mprq.min_stride_size_n = mprq_min_stride_size_n;
1225 config->mprq.max_stride_size_n = mprq_max_stride_size_n;
1226 } else if (config->mprq.enabled && !mprq) {
1227 DRV_LOG(WARNING, "Multi-Packet RQ isn't supported");
1228 config->mprq.enabled = 0;
1230 if (config->max_dump_files_num == 0)
1231 config->max_dump_files_num = 128;
1232 eth_dev = rte_eth_dev_allocate(name);
1233 if (eth_dev == NULL) {
1234 DRV_LOG(ERR, "can not allocate rte ethdev");
1238 if (priv->representor) {
1239 eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
1240 eth_dev->data->representor_id = priv->representor_id;
1243 * Store associated network device interface index. This index
1244 * is permanent throughout the lifetime of device. So, we may store
1245 * the ifindex here and use the cached value further.
1247 MLX5_ASSERT(spawn->ifindex);
1248 priv->if_index = spawn->ifindex;
1249 if (priv->pf_bond >= 0 && priv->master) {
1250 /* Get bond interface info */
1251 err = mlx5_sysfs_bond_info(priv->if_index,
1252 &priv->bond_ifindex,
1255 DRV_LOG(ERR, "unable to get bond info: %s",
1256 strerror(rte_errno));
1258 DRV_LOG(INFO, "PF device %u, bond device %u(%s)",
1259 priv->if_index, priv->bond_ifindex,
1262 eth_dev->data->dev_private = priv;
1263 priv->dev_data = eth_dev->data;
1264 eth_dev->data->mac_addrs = priv->mac;
1265 eth_dev->device = dpdk_dev;
1266 /* Configure the first MAC address by default. */
1267 if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) {
1269 "port %u cannot get MAC address, is mlx5_en"
1270 " loaded? (errno: %s)",
1271 eth_dev->data->port_id, strerror(rte_errno));
1276 "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
1277 eth_dev->data->port_id,
1278 mac.addr_bytes[0], mac.addr_bytes[1],
1279 mac.addr_bytes[2], mac.addr_bytes[3],
1280 mac.addr_bytes[4], mac.addr_bytes[5]);
1281 #ifdef RTE_LIBRTE_MLX5_DEBUG
1283 char ifname[IF_NAMESIZE];
1285 if (mlx5_get_ifname(eth_dev, &ifname) == 0)
1286 DRV_LOG(DEBUG, "port %u ifname is \"%s\"",
1287 eth_dev->data->port_id, ifname);
1289 DRV_LOG(DEBUG, "port %u ifname is unknown",
1290 eth_dev->data->port_id);
1293 /* Get actual MTU if possible. */
1294 err = mlx5_get_mtu(eth_dev, &priv->mtu);
1299 DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id,
1301 /* Initialize burst functions to prevent crashes before link-up. */
1302 eth_dev->rx_pkt_burst = removed_rx_burst;
1303 eth_dev->tx_pkt_burst = removed_tx_burst;
1304 eth_dev->dev_ops = &mlx5_os_dev_ops;
1305 eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status;
1306 eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status;
1307 eth_dev->rx_queue_count = mlx5_rx_queue_count;
1308 /* Register MAC address. */
1309 claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
1310 if (config->vf && config->vf_nl_en)
1311 mlx5_nl_mac_addr_sync(priv->nl_socket_route,
1312 mlx5_ifindex(eth_dev),
1313 eth_dev->data->mac_addrs,
1314 MLX5_MAX_MAC_ADDRESSES);
1316 priv->ctrl_flows = 0;
1317 TAILQ_INIT(&priv->flow_meters);
1318 TAILQ_INIT(&priv->flow_meter_profiles);
1319 /* Hint libmlx5 to use PMD allocator for data plane resources */
1320 mlx5_glue->dv_set_context_attr(sh->ctx,
1321 MLX5DV_CTX_ATTR_BUF_ALLOCATORS,
1322 (void *)((uintptr_t)&(struct mlx5dv_ctx_allocators){
1323 .alloc = &mlx5_alloc_verbs_buf,
1324 .free = &mlx5_free_verbs_buf,
1327 /* Bring Ethernet device up. */
1328 DRV_LOG(DEBUG, "port %u forcing Ethernet interface up",
1329 eth_dev->data->port_id);
1330 mlx5_set_link_up(eth_dev);
1332 * Even though the interrupt handler is not installed yet,
1333 * interrupts will still trigger on the async_fd from
1334 * Verbs context returned by ibv_open_device().
1336 mlx5_link_update(eth_dev, 0);
1337 #ifdef HAVE_MLX5DV_DR_ESWITCH
1338 if (!(config->hca_attr.eswitch_manager && config->dv_flow_en &&
1339 (switch_info->representor || switch_info->master)))
1340 config->dv_esw_en = 0;
1342 config->dv_esw_en = 0;
1344 /* Detect minimal data bytes to inline. */
1345 mlx5_set_min_inline(spawn, config);
1346 /* Store device configuration on private structure. */
1347 priv->config = *config;
1348 /* Create context for virtual machine VLAN workaround. */
1349 priv->vmwa_context = mlx5_vlan_vmwa_init(eth_dev, spawn->ifindex);
1350 if (config->dv_flow_en) {
1351 err = mlx5_alloc_shared_dr(priv);
1355 * RSS id is shared with meter flow id. Meter flow id can only
1356 * use the 24 MSB of the register.
1358 priv->qrss_id_pool = mlx5_flow_id_pool_alloc(UINT32_MAX >>
1359 MLX5_MTR_COLOR_BITS);
1360 if (!priv->qrss_id_pool) {
1361 DRV_LOG(ERR, "can't create flow id pool");
1367 * Initialize the dev_ops structure with DevX/Verbs function pointers.
1368 * When DevX is supported and both DV flow and dest tir are enabled, all
1369 * Rx functions use DevX API (except for drop that has not yet been
1370 * implemented in DevX).
1372 if (config->devx && config->dv_flow_en && config->dest_tir) {
1373 priv->obj_ops = devx_obj_ops;
1374 priv->obj_ops.drop_action_create =
1375 ibv_obj_ops.drop_action_create;
1376 priv->obj_ops.drop_action_destroy =
1377 ibv_obj_ops.drop_action_destroy;
1379 priv->obj_ops = ibv_obj_ops;
1381 /* The Tx objects are managed by a specific linux wrapper functions. */
1382 priv->obj_ops.txq_obj_new = mlx5_os_txq_obj_new;
1383 priv->obj_ops.txq_obj_release = mlx5_os_txq_obj_release;
1384 /* Supported Verbs flow priority number detection. */
1385 err = mlx5_flow_discover_priorities(eth_dev);
1390 priv->config.flow_prio = err;
1391 if (!priv->config.dv_esw_en &&
1392 priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
1393 DRV_LOG(WARNING, "metadata mode %u is not supported "
1394 "(no E-Switch)", priv->config.dv_xmeta_en);
1395 priv->config.dv_xmeta_en = MLX5_XMETA_MODE_LEGACY;
1397 mlx5_set_metadata_mask(eth_dev);
1398 if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1399 !priv->sh->dv_regc0_mask) {
1400 DRV_LOG(ERR, "metadata mode %u is not supported "
1401 "(no metadata reg_c[0] is available)",
1402 priv->config.dv_xmeta_en);
1407 * Allocate the buffer for flow creating, just once.
1408 * The allocation must be done before any flow creating.
1410 mlx5_flow_alloc_intermediate(eth_dev);
1411 /* Query availability of metadata reg_c's. */
1412 err = mlx5_flow_discover_mreg_c(eth_dev);
1417 if (!mlx5_flow_ext_mreg_supported(eth_dev)) {
1419 "port %u extensive metadata register is not supported",
1420 eth_dev->data->port_id);
1421 if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
1422 DRV_LOG(ERR, "metadata mode %u is not supported "
1423 "(no metadata registers available)",
1424 priv->config.dv_xmeta_en);
1429 if (priv->config.dv_flow_en &&
1430 priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1431 mlx5_flow_ext_mreg_supported(eth_dev) &&
1432 priv->sh->dv_regc0_mask) {
1433 priv->mreg_cp_tbl = mlx5_hlist_create(MLX5_FLOW_MREG_HNAME,
1434 MLX5_FLOW_MREG_HTABLE_SZ);
1435 if (!priv->mreg_cp_tbl) {
1443 if (priv->mreg_cp_tbl)
1444 mlx5_hlist_destroy(priv->mreg_cp_tbl, NULL, NULL);
1446 mlx5_os_free_shared_dr(priv);
1447 if (priv->nl_socket_route >= 0)
1448 close(priv->nl_socket_route);
1449 if (priv->nl_socket_rdma >= 0)
1450 close(priv->nl_socket_rdma);
1451 if (priv->vmwa_context)
1452 mlx5_vlan_vmwa_exit(priv->vmwa_context);
1453 if (priv->qrss_id_pool)
1454 mlx5_flow_id_pool_release(priv->qrss_id_pool);
1456 claim_zero(rte_eth_switch_domain_free(priv->domain_id));
1458 if (eth_dev != NULL)
1459 eth_dev->data->dev_private = NULL;
1461 if (eth_dev != NULL) {
1462 /* mac_addrs must not be freed alone because part of
1465 eth_dev->data->mac_addrs = NULL;
1466 rte_eth_dev_release_port(eth_dev);
1469 mlx5_free_shared_dev_ctx(sh);
1470 MLX5_ASSERT(err > 0);
1476 * Comparison callback to sort device data.
1478 * This is meant to be used with qsort().
1481 * Pointer to pointer to first data object.
1483 * Pointer to pointer to second data object.
1486 * 0 if both objects are equal, less than 0 if the first argument is less
1487 * than the second, greater than 0 otherwise.
1490 mlx5_dev_spawn_data_cmp(const void *a, const void *b)
1492 const struct mlx5_switch_info *si_a =
1493 &((const struct mlx5_dev_spawn_data *)a)->info;
1494 const struct mlx5_switch_info *si_b =
1495 &((const struct mlx5_dev_spawn_data *)b)->info;
1498 /* Master device first. */
1499 ret = si_b->master - si_a->master;
1502 /* Then representor devices. */
1503 ret = si_b->representor - si_a->representor;
1506 /* Unidentified devices come last in no specific order. */
1507 if (!si_a->representor)
1509 /* Order representors by name. */
1510 return si_a->port_name - si_b->port_name;
1514 * Match PCI information for possible slaves of bonding device.
1516 * @param[in] ibv_dev
1517 * Pointer to Infiniband device structure.
1518 * @param[in] pci_dev
1519 * Pointer to PCI device structure to match PCI address.
1520 * @param[in] nl_rdma
1521 * Netlink RDMA group socket handle.
1524 * negative value if no bonding device found, otherwise
1525 * positive index of slave PF in bonding.
1528 mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev,
1529 const struct rte_pci_device *pci_dev,
1532 char ifname[IF_NAMESIZE + 1];
1533 unsigned int ifindex;
1539 * Try to get master device name. If something goes
1540 * wrong suppose the lack of kernel support and no
1545 if (!strstr(ibv_dev->name, "bond"))
1547 np = mlx5_nl_portnum(nl_rdma, ibv_dev->name);
1551 * The Master device might not be on the predefined
1552 * port (not on port index 1, it is not garanted),
1553 * we have to scan all Infiniband device port and
1556 for (i = 1; i <= np; ++i) {
1557 /* Check whether Infiniband port is populated. */
1558 ifindex = mlx5_nl_ifindex(nl_rdma, ibv_dev->name, i);
1561 if (!if_indextoname(ifindex, ifname))
1563 /* Try to read bonding slave names from sysfs. */
1565 "/sys/class/net/%s/master/bonding/slaves", ifname);
1566 file = fopen(slaves, "r");
1572 /* Use safe format to check maximal buffer length. */
1573 MLX5_ASSERT(atol(RTE_STR(IF_NAMESIZE)) == IF_NAMESIZE);
1574 while (fscanf(file, "%" RTE_STR(IF_NAMESIZE) "s", ifname) == 1) {
1575 char tmp_str[IF_NAMESIZE + 32];
1576 struct rte_pci_addr pci_addr;
1577 struct mlx5_switch_info info;
1579 /* Process slave interface names in the loop. */
1580 snprintf(tmp_str, sizeof(tmp_str),
1581 "/sys/class/net/%s", ifname);
1582 if (mlx5_dev_to_pci_addr(tmp_str, &pci_addr)) {
1583 DRV_LOG(WARNING, "can not get PCI address"
1584 " for netdev \"%s\"", ifname);
1587 if (pci_dev->addr.domain != pci_addr.domain ||
1588 pci_dev->addr.bus != pci_addr.bus ||
1589 pci_dev->addr.devid != pci_addr.devid ||
1590 pci_dev->addr.function != pci_addr.function)
1592 /* Slave interface PCI address match found. */
1594 snprintf(tmp_str, sizeof(tmp_str),
1595 "/sys/class/net/%s/phys_port_name", ifname);
1596 file = fopen(tmp_str, "rb");
1599 info.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET;
1600 if (fscanf(file, "%32s", tmp_str) == 1)
1601 mlx5_translate_port_name(tmp_str, &info);
1602 if (info.name_type == MLX5_PHYS_PORT_NAME_TYPE_LEGACY ||
1603 info.name_type == MLX5_PHYS_PORT_NAME_TYPE_UPLINK)
1604 pf = info.port_name;
1613 * DPDK callback to register a PCI device.
1615 * This function spawns Ethernet devices out of a given PCI device.
1617 * @param[in] pci_drv
1618 * PCI driver structure (mlx5_driver).
1619 * @param[in] pci_dev
1620 * PCI device information.
1623 * 0 on success, a negative errno value otherwise and rte_errno is set.
1626 mlx5_os_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1627 struct rte_pci_device *pci_dev)
1629 struct ibv_device **ibv_list;
1631 * Number of found IB Devices matching with requested PCI BDF.
1632 * nd != 1 means there are multiple IB devices over the same
1633 * PCI device and we have representors and master.
1635 unsigned int nd = 0;
1637 * Number of found IB device Ports. nd = 1 and np = 1..n means
1638 * we have the single multiport IB device, and there may be
1639 * representors attached to some of found ports.
1641 unsigned int np = 0;
1643 * Number of DPDK ethernet devices to Spawn - either over
1644 * multiple IB devices or multiple ports of single IB device.
1645 * Actually this is the number of iterations to spawn.
1647 unsigned int ns = 0;
1650 * < 0 - no bonding device (single one)
1651 * >= 0 - bonding device (value is slave PF index)
1654 struct mlx5_dev_spawn_data *list = NULL;
1655 struct mlx5_dev_config dev_config;
1656 unsigned int dev_config_vf;
1659 if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1660 mlx5_pmd_socket_init();
1661 ret = mlx5_init_once();
1663 DRV_LOG(ERR, "unable to init PMD global data: %s",
1664 strerror(rte_errno));
1668 ibv_list = mlx5_glue->get_device_list(&ret);
1670 rte_errno = errno ? errno : ENOSYS;
1671 DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?");
1675 * First scan the list of all Infiniband devices to find
1676 * matching ones, gathering into the list.
1678 struct ibv_device *ibv_match[ret + 1];
1679 int nl_route = mlx5_nl_init(NETLINK_ROUTE);
1680 int nl_rdma = mlx5_nl_init(NETLINK_RDMA);
1684 struct rte_pci_addr pci_addr;
1686 DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name);
1687 bd = mlx5_device_bond_pci_match
1688 (ibv_list[ret], pci_dev, nl_rdma);
1691 * Bonding device detected. Only one match is allowed,
1692 * the bonding is supported over multi-port IB device,
1693 * there should be no matches on representor PCI
1694 * functions or non VF LAG bonding devices with
1695 * specified address.
1699 "multiple PCI match on bonding device"
1700 "\"%s\" found", ibv_list[ret]->name);
1705 DRV_LOG(INFO, "PCI information matches for"
1706 " slave %d bonding device \"%s\"",
1707 bd, ibv_list[ret]->name);
1708 ibv_match[nd++] = ibv_list[ret];
1711 if (mlx5_dev_to_pci_addr
1712 (ibv_list[ret]->ibdev_path, &pci_addr))
1714 if (pci_dev->addr.domain != pci_addr.domain ||
1715 pci_dev->addr.bus != pci_addr.bus ||
1716 pci_dev->addr.devid != pci_addr.devid ||
1717 pci_dev->addr.function != pci_addr.function)
1719 DRV_LOG(INFO, "PCI information matches for device \"%s\"",
1720 ibv_list[ret]->name);
1721 ibv_match[nd++] = ibv_list[ret];
1723 ibv_match[nd] = NULL;
1725 /* No device matches, just complain and bail out. */
1727 "no Verbs device matches PCI device " PCI_PRI_FMT ","
1728 " are kernel drivers loaded?",
1729 pci_dev->addr.domain, pci_dev->addr.bus,
1730 pci_dev->addr.devid, pci_dev->addr.function);
1737 * Found single matching device may have multiple ports.
1738 * Each port may be representor, we have to check the port
1739 * number and check the representors existence.
1742 np = mlx5_nl_portnum(nl_rdma, ibv_match[0]->name);
1744 DRV_LOG(WARNING, "can not get IB device \"%s\""
1745 " ports number", ibv_match[0]->name);
1746 if (bd >= 0 && !np) {
1747 DRV_LOG(ERR, "can not get ports"
1748 " for bonding device");
1754 #ifndef HAVE_MLX5DV_DR_DEVX_PORT
1757 * This may happen if there is VF LAG kernel support and
1758 * application is compiled with older rdma_core library.
1761 "No kernel/verbs support for VF LAG bonding found.");
1762 rte_errno = ENOTSUP;
1768 * Now we can determine the maximal
1769 * amount of devices to be spawned.
1771 list = mlx5_malloc(MLX5_MEM_ZERO,
1772 sizeof(struct mlx5_dev_spawn_data) *
1774 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
1776 DRV_LOG(ERR, "spawn data array allocation failure");
1781 if (bd >= 0 || np > 1) {
1783 * Single IB device with multiple ports found,
1784 * it may be E-Switch master device and representors.
1785 * We have to perform identification through the ports.
1787 MLX5_ASSERT(nl_rdma >= 0);
1788 MLX5_ASSERT(ns == 0);
1789 MLX5_ASSERT(nd == 1);
1791 for (i = 1; i <= np; ++i) {
1792 list[ns].max_port = np;
1793 list[ns].phys_port = i;
1794 list[ns].phys_dev = ibv_match[0];
1795 list[ns].eth_dev = NULL;
1796 list[ns].pci_dev = pci_dev;
1797 list[ns].pf_bond = bd;
1798 list[ns].ifindex = mlx5_nl_ifindex
1800 mlx5_os_get_dev_device_name
1801 (list[ns].phys_dev), i);
1802 if (!list[ns].ifindex) {
1804 * No network interface index found for the
1805 * specified port, it means there is no
1806 * representor on this port. It's OK,
1807 * there can be disabled ports, for example
1808 * if sriov_numvfs < sriov_totalvfs.
1814 ret = mlx5_nl_switch_info
1818 if (ret || (!list[ns].info.representor &&
1819 !list[ns].info.master)) {
1821 * We failed to recognize representors with
1822 * Netlink, let's try to perform the task
1825 ret = mlx5_sysfs_switch_info
1829 if (!ret && bd >= 0) {
1830 switch (list[ns].info.name_type) {
1831 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1832 if (list[ns].info.port_name == bd)
1835 case MLX5_PHYS_PORT_NAME_TYPE_PFHPF:
1837 case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1838 if (list[ns].info.pf_num == bd)
1846 if (!ret && (list[ns].info.representor ^
1847 list[ns].info.master))
1852 "unable to recognize master/representors"
1853 " on the IB device with multiple ports");
1860 * The existence of several matching entries (nd > 1) means
1861 * port representors have been instantiated. No existing Verbs
1862 * call nor sysfs entries can tell them apart, this can only
1863 * be done through Netlink calls assuming kernel drivers are
1864 * recent enough to support them.
1866 * In the event of identification failure through Netlink,
1867 * try again through sysfs, then:
1869 * 1. A single IB device matches (nd == 1) with single
1870 * port (np=0/1) and is not a representor, assume
1871 * no switch support.
1873 * 2. Otherwise no safe assumptions can be made;
1874 * complain louder and bail out.
1876 for (i = 0; i != nd; ++i) {
1877 memset(&list[ns].info, 0, sizeof(list[ns].info));
1878 list[ns].max_port = 1;
1879 list[ns].phys_port = 1;
1880 list[ns].phys_dev = ibv_match[i];
1881 list[ns].eth_dev = NULL;
1882 list[ns].pci_dev = pci_dev;
1883 list[ns].pf_bond = -1;
1884 list[ns].ifindex = 0;
1886 list[ns].ifindex = mlx5_nl_ifindex
1888 mlx5_os_get_dev_device_name
1889 (list[ns].phys_dev), 1);
1890 if (!list[ns].ifindex) {
1891 char ifname[IF_NAMESIZE];
1894 * Netlink failed, it may happen with old
1895 * ib_core kernel driver (before 4.16).
1896 * We can assume there is old driver because
1897 * here we are processing single ports IB
1898 * devices. Let's try sysfs to retrieve
1899 * the ifindex. The method works for
1900 * master device only.
1904 * Multiple devices found, assume
1905 * representors, can not distinguish
1906 * master/representor and retrieve
1907 * ifindex via sysfs.
1911 ret = mlx5_get_ifname_sysfs
1912 (ibv_match[i]->ibdev_path, ifname);
1915 if_nametoindex(ifname);
1916 if (!list[ns].ifindex) {
1918 * No network interface index found
1919 * for the specified device, it means
1920 * there it is neither representor
1928 ret = mlx5_nl_switch_info
1932 if (ret || (!list[ns].info.representor &&
1933 !list[ns].info.master)) {
1935 * We failed to recognize representors with
1936 * Netlink, let's try to perform the task
1939 ret = mlx5_sysfs_switch_info
1943 if (!ret && (list[ns].info.representor ^
1944 list[ns].info.master)) {
1946 } else if ((nd == 1) &&
1947 !list[ns].info.representor &&
1948 !list[ns].info.master) {
1950 * Single IB device with
1951 * one physical port and
1952 * attached network device.
1953 * May be SRIOV is not enabled
1954 * or there is no representors.
1956 DRV_LOG(INFO, "no E-Switch support detected");
1963 "unable to recognize master/representors"
1964 " on the multiple IB devices");
1972 * Sort list to probe devices in natural order for users convenience
1973 * (i.e. master first, then representors from lowest to highest ID).
1975 qsort(list, ns, sizeof(*list), mlx5_dev_spawn_data_cmp);
1976 /* Device specific configuration. */
1977 switch (pci_dev->id.device_id) {
1978 case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF:
1979 case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF:
1980 case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF:
1981 case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF:
1982 case PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF:
1983 case PCI_DEVICE_ID_MELLANOX_CONNECTX6VF:
1984 case PCI_DEVICE_ID_MELLANOX_CONNECTX6DXVF:
1991 for (i = 0; i != ns; ++i) {
1994 /* Default configuration. */
1995 memset(&dev_config, 0, sizeof(struct mlx5_dev_config));
1996 dev_config.vf = dev_config_vf;
1997 dev_config.mps = MLX5_ARG_UNSET;
1998 dev_config.dbnc = MLX5_ARG_UNSET;
1999 dev_config.rx_vec_en = 1;
2000 dev_config.txq_inline_max = MLX5_ARG_UNSET;
2001 dev_config.txq_inline_min = MLX5_ARG_UNSET;
2002 dev_config.txq_inline_mpw = MLX5_ARG_UNSET;
2003 dev_config.txqs_inline = MLX5_ARG_UNSET;
2004 dev_config.vf_nl_en = 1;
2005 dev_config.mr_ext_memseg_en = 1;
2006 dev_config.mprq.max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN;
2007 dev_config.mprq.min_rxqs_num = MLX5_MPRQ_MIN_RXQS;
2008 dev_config.dv_esw_en = 1;
2009 dev_config.dv_flow_en = 1;
2010 dev_config.decap_en = 1;
2011 dev_config.log_hp_size = MLX5_ARG_UNSET;
2012 list[i].eth_dev = mlx5_dev_spawn(&pci_dev->device,
2015 if (!list[i].eth_dev) {
2016 if (rte_errno != EBUSY && rte_errno != EEXIST)
2018 /* Device is disabled or already spawned. Ignore it. */
2021 restore = list[i].eth_dev->data->dev_flags;
2022 rte_eth_copy_pci_info(list[i].eth_dev, pci_dev);
2023 /* Restore non-PCI flags cleared by the above call. */
2024 list[i].eth_dev->data->dev_flags |= restore;
2025 rte_eth_dev_probing_finish(list[i].eth_dev);
2029 "probe of PCI device " PCI_PRI_FMT " aborted after"
2030 " encountering an error: %s",
2031 pci_dev->addr.domain, pci_dev->addr.bus,
2032 pci_dev->addr.devid, pci_dev->addr.function,
2033 strerror(rte_errno));
2037 if (!list[i].eth_dev)
2039 mlx5_dev_close(list[i].eth_dev);
2040 /* mac_addrs must not be freed because in dev_private */
2041 list[i].eth_dev->data->mac_addrs = NULL;
2042 claim_zero(rte_eth_dev_release_port(list[i].eth_dev));
2044 /* Restore original error. */
2051 * Do the routine cleanup:
2052 * - close opened Netlink sockets
2053 * - free allocated spawn data array
2054 * - free the Infiniband device list
2062 MLX5_ASSERT(ibv_list);
2063 mlx5_glue->free_device_list(ibv_list);
2068 mlx5_config_doorbell_mapping_env(const struct mlx5_dev_config *config)
2073 MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
2074 /* Get environment variable to store. */
2075 env = getenv(MLX5_SHUT_UP_BF);
2076 value = env ? !!strcmp(env, "0") : MLX5_ARG_UNSET;
2077 if (config->dbnc == MLX5_ARG_UNSET)
2078 setenv(MLX5_SHUT_UP_BF, MLX5_SHUT_UP_BF_DEFAULT, 1);
2080 setenv(MLX5_SHUT_UP_BF,
2081 config->dbnc == MLX5_TXDB_NCACHED ? "1" : "0", 1);
2086 mlx5_restore_doorbell_mapping_env(int value)
2088 MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
2089 /* Restore the original environment variable state. */
2090 if (value == MLX5_ARG_UNSET)
2091 unsetenv(MLX5_SHUT_UP_BF);
2093 setenv(MLX5_SHUT_UP_BF, value ? "1" : "0", 1);
2097 * Extract pdn of PD object using DV API.
2100 * Pointer to the verbs PD object.
2102 * Pointer to the PD object number variable.
2105 * 0 on success, error value otherwise.
2108 mlx5_os_get_pdn(void *pd, uint32_t *pdn)
2110 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
2111 struct mlx5dv_obj obj;
2112 struct mlx5dv_pd pd_info;
2116 obj.pd.out = &pd_info;
2117 ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_PD);
2119 DRV_LOG(DEBUG, "Fail to get PD object info");
2128 #endif /* HAVE_IBV_FLOW_DV_SUPPORT */
2132 * Function API to open IB device.
2134 * This function calls the Linux glue APIs to open a device.
2137 * Pointer to the IB device attributes (name, port, etc).
2138 * @param[out] config
2139 * Pointer to device configuration structure.
2141 * Pointer to shared context structure.
2144 * 0 on success, a positive error value otherwise.
2147 mlx5_os_open_device(const struct mlx5_dev_spawn_data *spawn,
2148 const struct mlx5_dev_config *config,
2149 struct mlx5_dev_ctx_shared *sh)
2154 sh->numa_node = spawn->pci_dev->device.numa_node;
2155 pthread_mutex_init(&sh->txpp.mutex, NULL);
2157 * Configure environment variable "MLX5_BF_SHUT_UP"
2158 * before the device creation. The rdma_core library
2159 * checks the variable at device creation and
2160 * stores the result internally.
2162 dbmap_env = mlx5_config_doorbell_mapping_env(config);
2163 /* Try to open IB device with DV first, then usual Verbs. */
2165 sh->ctx = mlx5_glue->dv_open_device(spawn->phys_dev);
2168 DRV_LOG(DEBUG, "DevX is supported");
2169 /* The device is created, no need for environment. */
2170 mlx5_restore_doorbell_mapping_env(dbmap_env);
2172 /* The environment variable is still configured. */
2173 sh->ctx = mlx5_glue->open_device(spawn->phys_dev);
2174 err = errno ? errno : ENODEV;
2176 * The environment variable is not needed anymore,
2177 * all device creation attempts are completed.
2179 mlx5_restore_doorbell_mapping_env(dbmap_env);
2182 DRV_LOG(DEBUG, "DevX is NOT supported");
2189 * Install shared asynchronous device events handler.
2190 * This function is implemented to support event sharing
2191 * between multiple ports of single IB device.
2194 * Pointer to mlx5_dev_ctx_shared object.
2197 mlx5_os_dev_shared_handler_install(struct mlx5_dev_ctx_shared *sh)
2202 sh->intr_handle.fd = -1;
2203 flags = fcntl(((struct ibv_context *)sh->ctx)->async_fd, F_GETFL);
2204 ret = fcntl(((struct ibv_context *)sh->ctx)->async_fd,
2205 F_SETFL, flags | O_NONBLOCK);
2207 DRV_LOG(INFO, "failed to change file descriptor async event"
2210 sh->intr_handle.fd = ((struct ibv_context *)sh->ctx)->async_fd;
2211 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
2212 if (rte_intr_callback_register(&sh->intr_handle,
2213 mlx5_dev_interrupt_handler, sh)) {
2214 DRV_LOG(INFO, "Fail to install the shared interrupt.");
2215 sh->intr_handle.fd = -1;
2219 #ifdef HAVE_IBV_DEVX_ASYNC
2220 sh->intr_handle_devx.fd = -1;
2222 (void *)mlx5_glue->devx_create_cmd_comp(sh->ctx);
2223 struct mlx5dv_devx_cmd_comp *devx_comp = sh->devx_comp;
2225 DRV_LOG(INFO, "failed to allocate devx_comp.");
2228 flags = fcntl(devx_comp->fd, F_GETFL);
2229 ret = fcntl(devx_comp->fd, F_SETFL, flags | O_NONBLOCK);
2231 DRV_LOG(INFO, "failed to change file descriptor"
2235 sh->intr_handle_devx.fd = devx_comp->fd;
2236 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
2237 if (rte_intr_callback_register(&sh->intr_handle_devx,
2238 mlx5_dev_interrupt_handler_devx, sh)) {
2239 DRV_LOG(INFO, "Fail to install the devx shared"
2241 sh->intr_handle_devx.fd = -1;
2243 #endif /* HAVE_IBV_DEVX_ASYNC */
2248 * Uninstall shared asynchronous device events handler.
2249 * This function is implemented to support event sharing
2250 * between multiple ports of single IB device.
2253 * Pointer to mlx5_dev_ctx_shared object.
2256 mlx5_os_dev_shared_handler_uninstall(struct mlx5_dev_ctx_shared *sh)
2258 if (sh->intr_handle.fd >= 0)
2259 mlx5_intr_callback_unregister(&sh->intr_handle,
2260 mlx5_dev_interrupt_handler, sh);
2261 #ifdef HAVE_IBV_DEVX_ASYNC
2262 if (sh->intr_handle_devx.fd >= 0)
2263 rte_intr_callback_unregister(&sh->intr_handle_devx,
2264 mlx5_dev_interrupt_handler_devx, sh);
2266 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
2271 * Read statistics by a named counter.
2274 * Pointer to the private device data structure.
2275 * @param[in] ctr_name
2276 * Pointer to the name of the statistic counter to read
2278 * Pointer to read statistic value.
2280 * 0 on success and stat is valud, 1 if failed to read the value
2285 mlx5_os_read_dev_stat(struct mlx5_priv *priv, const char *ctr_name,
2291 MKSTR(path, "%s/ports/%d/hw_counters/%s",
2292 priv->sh->ibdev_path,
2295 fd = open(path, O_RDONLY);
2297 * in switchdev the file location is not per port
2298 * but rather in <ibdev_path>/hw_counters/<file_name>.
2301 MKSTR(path1, "%s/hw_counters/%s",
2302 priv->sh->ibdev_path,
2304 fd = open(path1, O_RDONLY);
2307 char buf[21] = {'\0'};
2308 ssize_t n = read(fd, buf, sizeof(buf));
2312 *stat = strtoull(buf, NULL, 10);
2322 * Set the reg_mr and dereg_mr call backs
2324 * @param reg_mr_cb[out]
2325 * Pointer to reg_mr func
2326 * @param dereg_mr_cb[out]
2327 * Pointer to dereg_mr func
2331 mlx5_os_set_reg_mr_cb(mlx5_reg_mr_t *reg_mr_cb,
2332 mlx5_dereg_mr_t *dereg_mr_cb)
2334 *reg_mr_cb = mlx5_verbs_ops.reg_mr;
2335 *dereg_mr_cb = mlx5_verbs_ops.dereg_mr;
2339 * Remove a MAC address from device
2342 * Pointer to Ethernet device structure.
2344 * MAC address index.
2347 mlx5_os_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
2349 struct mlx5_priv *priv = dev->data->dev_private;
2350 const int vf = priv->config.vf;
2353 mlx5_nl_mac_addr_remove(priv->nl_socket_route,
2354 mlx5_ifindex(dev), priv->mac_own,
2355 &dev->data->mac_addrs[index], index);
2359 * Adds a MAC address to the device
2362 * Pointer to Ethernet device structure.
2364 * MAC address to register.
2366 * MAC address index.
2369 * 0 on success, a negative errno value otherwise
2372 mlx5_os_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac,
2375 struct mlx5_priv *priv = dev->data->dev_private;
2376 const int vf = priv->config.vf;
2380 ret = mlx5_nl_mac_addr_add(priv->nl_socket_route,
2381 mlx5_ifindex(dev), priv->mac_own,
2387 * Modify a VF MAC address
2390 * Pointer to device private data.
2392 * MAC address to modify into.
2394 * Net device interface index
2399 * 0 on success, a negative errno value otherwise
2402 mlx5_os_vf_mac_addr_modify(struct mlx5_priv *priv,
2403 unsigned int iface_idx,
2404 struct rte_ether_addr *mac_addr,
2407 return mlx5_nl_vf_mac_addr_modify
2408 (priv->nl_socket_route, iface_idx, mac_addr, vf_index);
2412 * Set device promiscuous mode
2415 * Pointer to Ethernet device structure.
2417 * 0 - promiscuous is disabled, otherwise - enabled
2420 * 0 on success, a negative error value otherwise
2423 mlx5_os_set_promisc(struct rte_eth_dev *dev, int enable)
2425 struct mlx5_priv *priv = dev->data->dev_private;
2427 return mlx5_nl_promisc(priv->nl_socket_route,
2428 mlx5_ifindex(dev), !!enable);
2432 * Set device promiscuous mode
2435 * Pointer to Ethernet device structure.
2437 * 0 - all multicase is disabled, otherwise - enabled
2440 * 0 on success, a negative error value otherwise
2443 mlx5_os_set_allmulti(struct rte_eth_dev *dev, int enable)
2445 struct mlx5_priv *priv = dev->data->dev_private;
2447 return mlx5_nl_allmulti(priv->nl_socket_route,
2448 mlx5_ifindex(dev), !!enable);
2452 * Flush device MAC addresses
2455 * Pointer to Ethernet device structure.
2459 mlx5_os_mac_addr_flush(struct rte_eth_dev *dev)
2461 struct mlx5_priv *priv = dev->data->dev_private;
2463 mlx5_nl_mac_addr_flush(priv->nl_socket_route, mlx5_ifindex(dev),
2464 dev->data->mac_addrs,
2465 MLX5_MAX_MAC_ADDRESSES, priv->mac_own);
2468 const struct eth_dev_ops mlx5_os_dev_ops = {
2469 .dev_configure = mlx5_dev_configure,
2470 .dev_start = mlx5_dev_start,
2471 .dev_stop = mlx5_dev_stop,
2472 .dev_set_link_down = mlx5_set_link_down,
2473 .dev_set_link_up = mlx5_set_link_up,
2474 .dev_close = mlx5_dev_close,
2475 .promiscuous_enable = mlx5_promiscuous_enable,
2476 .promiscuous_disable = mlx5_promiscuous_disable,
2477 .allmulticast_enable = mlx5_allmulticast_enable,
2478 .allmulticast_disable = mlx5_allmulticast_disable,
2479 .link_update = mlx5_link_update,
2480 .stats_get = mlx5_stats_get,
2481 .stats_reset = mlx5_stats_reset,
2482 .xstats_get = mlx5_xstats_get,
2483 .xstats_reset = mlx5_xstats_reset,
2484 .xstats_get_names = mlx5_xstats_get_names,
2485 .fw_version_get = mlx5_fw_version_get,
2486 .dev_infos_get = mlx5_dev_infos_get,
2487 .read_clock = mlx5_txpp_read_clock,
2488 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
2489 .vlan_filter_set = mlx5_vlan_filter_set,
2490 .rx_queue_setup = mlx5_rx_queue_setup,
2491 .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup,
2492 .tx_queue_setup = mlx5_tx_queue_setup,
2493 .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup,
2494 .rx_queue_release = mlx5_rx_queue_release,
2495 .tx_queue_release = mlx5_tx_queue_release,
2496 .rx_queue_start = mlx5_rx_queue_start,
2497 .rx_queue_stop = mlx5_rx_queue_stop,
2498 .tx_queue_start = mlx5_tx_queue_start,
2499 .tx_queue_stop = mlx5_tx_queue_stop,
2500 .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
2501 .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
2502 .mac_addr_remove = mlx5_mac_addr_remove,
2503 .mac_addr_add = mlx5_mac_addr_add,
2504 .mac_addr_set = mlx5_mac_addr_set,
2505 .set_mc_addr_list = mlx5_set_mc_addr_list,
2506 .mtu_set = mlx5_dev_set_mtu,
2507 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
2508 .vlan_offload_set = mlx5_vlan_offload_set,
2509 .reta_update = mlx5_dev_rss_reta_update,
2510 .reta_query = mlx5_dev_rss_reta_query,
2511 .rss_hash_update = mlx5_rss_hash_update,
2512 .rss_hash_conf_get = mlx5_rss_hash_conf_get,
2513 .filter_ctrl = mlx5_dev_filter_ctrl,
2514 .rxq_info_get = mlx5_rxq_info_get,
2515 .txq_info_get = mlx5_txq_info_get,
2516 .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2517 .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2518 .rx_queue_intr_enable = mlx5_rx_intr_enable,
2519 .rx_queue_intr_disable = mlx5_rx_intr_disable,
2520 .is_removed = mlx5_is_removed,
2521 .udp_tunnel_port_add = mlx5_udp_tunnel_port_add,
2522 .get_module_info = mlx5_get_module_info,
2523 .get_module_eeprom = mlx5_get_module_eeprom,
2524 .hairpin_cap_get = mlx5_hairpin_cap_get,
2525 .mtr_ops_get = mlx5_flow_meter_ops_get,
2528 /* Available operations from secondary process. */
2529 const struct eth_dev_ops mlx5_os_dev_sec_ops = {
2530 .stats_get = mlx5_stats_get,
2531 .stats_reset = mlx5_stats_reset,
2532 .xstats_get = mlx5_xstats_get,
2533 .xstats_reset = mlx5_xstats_reset,
2534 .xstats_get_names = mlx5_xstats_get_names,
2535 .fw_version_get = mlx5_fw_version_get,
2536 .dev_infos_get = mlx5_dev_infos_get,
2537 .read_clock = mlx5_txpp_read_clock,
2538 .rx_queue_start = mlx5_rx_queue_start,
2539 .rx_queue_stop = mlx5_rx_queue_stop,
2540 .tx_queue_start = mlx5_tx_queue_start,
2541 .tx_queue_stop = mlx5_tx_queue_stop,
2542 .rxq_info_get = mlx5_rxq_info_get,
2543 .txq_info_get = mlx5_txq_info_get,
2544 .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2545 .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2546 .get_module_info = mlx5_get_module_info,
2547 .get_module_eeprom = mlx5_get_module_eeprom,
2550 /* Available operations in flow isolated mode. */
2551 const struct eth_dev_ops mlx5_os_dev_ops_isolate = {
2552 .dev_configure = mlx5_dev_configure,
2553 .dev_start = mlx5_dev_start,
2554 .dev_stop = mlx5_dev_stop,
2555 .dev_set_link_down = mlx5_set_link_down,
2556 .dev_set_link_up = mlx5_set_link_up,
2557 .dev_close = mlx5_dev_close,
2558 .promiscuous_enable = mlx5_promiscuous_enable,
2559 .promiscuous_disable = mlx5_promiscuous_disable,
2560 .allmulticast_enable = mlx5_allmulticast_enable,
2561 .allmulticast_disable = mlx5_allmulticast_disable,
2562 .link_update = mlx5_link_update,
2563 .stats_get = mlx5_stats_get,
2564 .stats_reset = mlx5_stats_reset,
2565 .xstats_get = mlx5_xstats_get,
2566 .xstats_reset = mlx5_xstats_reset,
2567 .xstats_get_names = mlx5_xstats_get_names,
2568 .fw_version_get = mlx5_fw_version_get,
2569 .dev_infos_get = mlx5_dev_infos_get,
2570 .read_clock = mlx5_txpp_read_clock,
2571 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
2572 .vlan_filter_set = mlx5_vlan_filter_set,
2573 .rx_queue_setup = mlx5_rx_queue_setup,
2574 .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup,
2575 .tx_queue_setup = mlx5_tx_queue_setup,
2576 .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup,
2577 .rx_queue_release = mlx5_rx_queue_release,
2578 .tx_queue_release = mlx5_tx_queue_release,
2579 .rx_queue_start = mlx5_rx_queue_start,
2580 .rx_queue_stop = mlx5_rx_queue_stop,
2581 .tx_queue_start = mlx5_tx_queue_start,
2582 .tx_queue_stop = mlx5_tx_queue_stop,
2583 .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
2584 .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
2585 .mac_addr_remove = mlx5_mac_addr_remove,
2586 .mac_addr_add = mlx5_mac_addr_add,
2587 .mac_addr_set = mlx5_mac_addr_set,
2588 .set_mc_addr_list = mlx5_set_mc_addr_list,
2589 .mtu_set = mlx5_dev_set_mtu,
2590 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
2591 .vlan_offload_set = mlx5_vlan_offload_set,
2592 .filter_ctrl = mlx5_dev_filter_ctrl,
2593 .rxq_info_get = mlx5_rxq_info_get,
2594 .txq_info_get = mlx5_txq_info_get,
2595 .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2596 .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2597 .rx_queue_intr_enable = mlx5_rx_intr_enable,
2598 .rx_queue_intr_disable = mlx5_rx_intr_disable,
2599 .is_removed = mlx5_is_removed,
2600 .get_module_info = mlx5_get_module_info,
2601 .get_module_eeprom = mlx5_get_module_eeprom,
2602 .hairpin_cap_get = mlx5_hairpin_cap_get,
2603 .mtr_ops_get = mlx5_flow_meter_ops_get,