5a6ae790a7de7b19a03caaa99b87b59581bec694
[dpdk.git] / drivers / net / mlx5 / linux / mlx5_os.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2015 6WIND S.A.
3  * Copyright 2020 Mellanox Technologies, Ltd
4  */
5
6 #include <stddef.h>
7 #include <unistd.h>
8 #include <string.h>
9 #include <stdint.h>
10 #include <stdlib.h>
11 #include <errno.h>
12 #include <net/if.h>
13 #include <linux/rtnetlink.h>
14 #include <linux/sockios.h>
15 #include <linux/ethtool.h>
16 #include <fcntl.h>
17
18 #include <rte_malloc.h>
19 #include <rte_ethdev_driver.h>
20 #include <rte_ethdev_pci.h>
21 #include <rte_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>
30
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>
37
38 #include "mlx5_defs.h"
39 #include "mlx5.h"
40 #include "mlx5_common_os.h"
41 #include "mlx5_utils.h"
42 #include "mlx5_rxtx.h"
43 #include "mlx5_autoconf.h"
44 #include "mlx5_mr.h"
45 #include "mlx5_flow.h"
46 #include "rte_pmd_mlx5.h"
47 #include "mlx5_verbs.h"
48 #include "mlx5_nl.h"
49 #include "mlx5_devx.h"
50
51 #define MLX5_TAGS_HLIST_ARRAY_SIZE 8192
52
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)
56 #endif
57
58 #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP
59 #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4)
60 #endif
61
62 static const char *MZ_MLX5_PMD_SHARED_DATA = "mlx5_pmd_shared_data";
63
64 /* Spinlock for mlx5_shared_data allocation. */
65 static rte_spinlock_t mlx5_shared_data_lock = RTE_SPINLOCK_INITIALIZER;
66
67 /* Process local data for secondary processes. */
68 static struct mlx5_local_data mlx5_local_data;
69
70 /**
71  * Set the completion channel file descriptor interrupt as non-blocking.
72  *
73  * @param[in] rxq_obj
74  *   Pointer to RQ channel object, which includes the channel fd
75  *
76  * @param[out] fd
77  *   The file descriptor (representing the intetrrupt) used in this channel.
78  *
79  * @return
80  *   0 on successfully setting the fd to non-blocking, non-zero otherwise.
81  */
82 int
83 mlx5_os_set_nonblock_channel_fd(int fd)
84 {
85         int flags;
86
87         flags = fcntl(fd, F_GETFL);
88         return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
89 }
90
91 /**
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.
95  *
96  * @param dev
97  *   Pointer to ibv context.
98  *
99  * @param device_attr
100  *   Pointer to mlx5 device attributes.
101  *
102  * @return
103  *   0 on success, non zero error number otherwise
104  */
105 int
106 mlx5_os_get_dev_attr(void *ctx, struct mlx5_dev_attr *device_attr)
107 {
108         int err;
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);
112         if (err)
113                 return err;
114
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;
125
126         struct mlx5dv_context dv_attr = { .comp_mask = 0 };
127         err = mlx5_glue->dv_query_device(ctx, &dv_attr);
128         if (err)
129                 return err;
130
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;
136 #endif
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;
149 #endif
150
151         return err;
152 }
153
154 /**
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()).
159  *
160  * @param[in] size
161  *   The size in bytes of the memory to allocate.
162  * @param[in] data
163  *   A pointer to the callback data.
164  *
165  * @return
166  *   Allocated buffer, NULL otherwise and rte_errno is set.
167  */
168 static void *
169 mlx5_alloc_verbs_buf(size_t size, void *data)
170 {
171         struct mlx5_priv *priv = data;
172         void *ret;
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");
177                 rte_errno = ENOMEM;
178                 return NULL;
179         }
180
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;
183
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;
188
189                 socket = ctrl->socket;
190         }
191         MLX5_ASSERT(data != NULL);
192         ret = mlx5_malloc(0, size, alignment, socket);
193         if (!ret && size)
194                 rte_errno = ENOMEM;
195         return ret;
196 }
197
198 /**
199  * Verbs callback to free a memory.
200  *
201  * @param[in] ptr
202  *   A pointer to the memory to free.
203  * @param[in] data
204  *   A pointer to the callback data.
205  */
206 static void
207 mlx5_free_verbs_buf(void *ptr, void *data __rte_unused)
208 {
209         MLX5_ASSERT(data != NULL);
210         mlx5_free(ptr);
211 }
212
213 /**
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.
217  *
218  * @param[in] priv
219  *   Pointer to the private device data structure.
220  *
221  * @return
222  *   Zero on success, positive error code otherwise.
223  */
224 static int
225 mlx5_alloc_shared_dr(struct mlx5_priv *priv)
226 {
227         struct mlx5_dev_ctx_shared *sh = priv->sh;
228         char s[MLX5_HLIST_NAMESIZE] __rte_unused;
229         int err;
230
231         MLX5_ASSERT(sh && sh->refcnt);
232         if (sh->refcnt > 1)
233                 return 0;
234         err = mlx5_alloc_table_hash_list(priv);
235         if (err)
236                 goto error;
237         /* The resources below are only valid with DV support. */
238 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
239         /* Init port id action cache list. */
240         snprintf(s, sizeof(s), "%s_port_id_action_cache", sh->ibdev_name);
241         mlx5_cache_list_init(&sh->port_id_action_list, s, 0, sh,
242                              flow_dv_port_id_create_cb,
243                              flow_dv_port_id_match_cb,
244                              flow_dv_port_id_remove_cb);
245         /* Init push vlan action cache list. */
246         snprintf(s, sizeof(s), "%s_push_vlan_action_cache", sh->ibdev_name);
247         mlx5_cache_list_init(&sh->push_vlan_action_list, s, 0, sh,
248                              flow_dv_push_vlan_create_cb,
249                              flow_dv_push_vlan_match_cb,
250                              flow_dv_push_vlan_remove_cb);
251         /* Init sample action cache list. */
252         snprintf(s, sizeof(s), "%s_sample_action_cache", sh->ibdev_name);
253         mlx5_cache_list_init(&sh->sample_action_list, s, 0, sh,
254                              flow_dv_sample_create_cb,
255                              flow_dv_sample_match_cb,
256                              flow_dv_sample_remove_cb);
257         /* Init dest array action cache list. */
258         snprintf(s, sizeof(s), "%s_dest_array_cache", sh->ibdev_name);
259         mlx5_cache_list_init(&sh->dest_array_list, s, 0, sh,
260                              flow_dv_dest_array_create_cb,
261                              flow_dv_dest_array_match_cb,
262                              flow_dv_dest_array_remove_cb);
263         /* Create tags hash list table. */
264         snprintf(s, sizeof(s), "%s_tags", sh->ibdev_name);
265         sh->tag_table = mlx5_hlist_create(s, MLX5_TAGS_HLIST_ARRAY_SIZE, 0,
266                                           MLX5_HLIST_WRITE_MOST,
267                                           flow_dv_tag_create_cb, NULL,
268                                           flow_dv_tag_remove_cb);
269         if (!sh->tag_table) {
270                 DRV_LOG(ERR, "tags with hash creation failed.");
271                 err = ENOMEM;
272                 goto error;
273         }
274         sh->tag_table->ctx = sh;
275         snprintf(s, sizeof(s), "%s_hdr_modify", sh->ibdev_name);
276         sh->modify_cmds = mlx5_hlist_create(s, MLX5_FLOW_HDR_MODIFY_HTABLE_SZ,
277                                             0, MLX5_HLIST_WRITE_MOST |
278                                             MLX5_HLIST_DIRECT_KEY,
279                                             flow_dv_modify_create_cb,
280                                             flow_dv_modify_match_cb,
281                                             flow_dv_modify_remove_cb);
282         if (!sh->modify_cmds) {
283                 DRV_LOG(ERR, "hdr modify hash creation failed");
284                 err = ENOMEM;
285                 goto error;
286         }
287         sh->modify_cmds->ctx = sh;
288         snprintf(s, sizeof(s), "%s_encaps_decaps", sh->ibdev_name);
289         sh->encaps_decaps = mlx5_hlist_create(s,
290                                               MLX5_FLOW_ENCAP_DECAP_HTABLE_SZ,
291                                               0, MLX5_HLIST_DIRECT_KEY |
292                                               MLX5_HLIST_WRITE_MOST,
293                                               flow_dv_encap_decap_create_cb,
294                                               flow_dv_encap_decap_match_cb,
295                                               flow_dv_encap_decap_remove_cb);
296         if (!sh->encaps_decaps) {
297                 DRV_LOG(ERR, "encap decap hash creation failed");
298                 err = ENOMEM;
299                 goto error;
300         }
301         sh->encaps_decaps->ctx = sh;
302 #endif
303 #ifdef HAVE_MLX5DV_DR
304         void *domain;
305
306         /* Reference counter is zero, we should initialize structures. */
307         domain = mlx5_glue->dr_create_domain(sh->ctx,
308                                              MLX5DV_DR_DOMAIN_TYPE_NIC_RX);
309         if (!domain) {
310                 DRV_LOG(ERR, "ingress mlx5dv_dr_create_domain failed");
311                 err = errno;
312                 goto error;
313         }
314         sh->rx_domain = domain;
315         domain = mlx5_glue->dr_create_domain(sh->ctx,
316                                              MLX5DV_DR_DOMAIN_TYPE_NIC_TX);
317         if (!domain) {
318                 DRV_LOG(ERR, "egress mlx5dv_dr_create_domain failed");
319                 err = errno;
320                 goto error;
321         }
322         sh->tx_domain = domain;
323 #ifdef HAVE_MLX5DV_DR_ESWITCH
324         if (priv->config.dv_esw_en) {
325                 domain  = mlx5_glue->dr_create_domain
326                         (sh->ctx, MLX5DV_DR_DOMAIN_TYPE_FDB);
327                 if (!domain) {
328                         DRV_LOG(ERR, "FDB mlx5dv_dr_create_domain failed");
329                         err = errno;
330                         goto error;
331                 }
332                 sh->fdb_domain = domain;
333                 sh->esw_drop_action = mlx5_glue->dr_create_flow_action_drop();
334         }
335 #endif
336         if (!sh->tunnel_hub)
337                 err = mlx5_alloc_tunnel_hub(sh);
338         if (err) {
339                 DRV_LOG(ERR, "mlx5_alloc_tunnel_hub failed err=%d", err);
340                 goto error;
341         }
342         if (priv->config.reclaim_mode == MLX5_RCM_AGGR) {
343                 mlx5_glue->dr_reclaim_domain_memory(sh->rx_domain, 1);
344                 mlx5_glue->dr_reclaim_domain_memory(sh->tx_domain, 1);
345                 if (sh->fdb_domain)
346                         mlx5_glue->dr_reclaim_domain_memory(sh->fdb_domain, 1);
347         }
348         sh->pop_vlan_action = mlx5_glue->dr_create_flow_action_pop_vlan();
349 #endif /* HAVE_MLX5DV_DR */
350         sh->default_miss_action =
351                         mlx5_glue->dr_create_flow_action_default_miss();
352         if (!sh->default_miss_action)
353                 DRV_LOG(WARNING, "Default miss action is not supported.");
354         return 0;
355 error:
356         /* Rollback the created objects. */
357         if (sh->rx_domain) {
358                 mlx5_glue->dr_destroy_domain(sh->rx_domain);
359                 sh->rx_domain = NULL;
360         }
361         if (sh->tx_domain) {
362                 mlx5_glue->dr_destroy_domain(sh->tx_domain);
363                 sh->tx_domain = NULL;
364         }
365         if (sh->fdb_domain) {
366                 mlx5_glue->dr_destroy_domain(sh->fdb_domain);
367                 sh->fdb_domain = NULL;
368         }
369         if (sh->esw_drop_action) {
370                 mlx5_glue->destroy_flow_action(sh->esw_drop_action);
371                 sh->esw_drop_action = NULL;
372         }
373         if (sh->pop_vlan_action) {
374                 mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
375                 sh->pop_vlan_action = NULL;
376         }
377         if (sh->encaps_decaps) {
378                 mlx5_hlist_destroy(sh->encaps_decaps);
379                 sh->encaps_decaps = NULL;
380         }
381         if (sh->modify_cmds) {
382                 mlx5_hlist_destroy(sh->modify_cmds);
383                 sh->modify_cmds = NULL;
384         }
385         if (sh->tag_table) {
386                 /* tags should be destroyed with flow before. */
387                 mlx5_hlist_destroy(sh->tag_table);
388                 sh->tag_table = NULL;
389         }
390         if (sh->tunnel_hub) {
391                 mlx5_release_tunnel_hub(sh, priv->dev_port);
392                 sh->tunnel_hub = NULL;
393         }
394         mlx5_free_table_hash_list(priv);
395         return err;
396 }
397
398 /**
399  * Destroy DR related data within private structure.
400  *
401  * @param[in] priv
402  *   Pointer to the private device data structure.
403  */
404 void
405 mlx5_os_free_shared_dr(struct mlx5_priv *priv)
406 {
407         struct mlx5_dev_ctx_shared *sh = priv->sh;
408
409         MLX5_ASSERT(sh && sh->refcnt);
410         if (sh->refcnt > 1)
411                 return;
412 #ifdef HAVE_MLX5DV_DR
413         if (sh->rx_domain) {
414                 mlx5_glue->dr_destroy_domain(sh->rx_domain);
415                 sh->rx_domain = NULL;
416         }
417         if (sh->tx_domain) {
418                 mlx5_glue->dr_destroy_domain(sh->tx_domain);
419                 sh->tx_domain = NULL;
420         }
421 #ifdef HAVE_MLX5DV_DR_ESWITCH
422         if (sh->fdb_domain) {
423                 mlx5_glue->dr_destroy_domain(sh->fdb_domain);
424                 sh->fdb_domain = NULL;
425         }
426         if (sh->esw_drop_action) {
427                 mlx5_glue->destroy_flow_action(sh->esw_drop_action);
428                 sh->esw_drop_action = NULL;
429         }
430 #endif
431         if (sh->pop_vlan_action) {
432                 mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
433                 sh->pop_vlan_action = NULL;
434         }
435 #endif /* HAVE_MLX5DV_DR */
436         if (sh->default_miss_action)
437                 mlx5_glue->destroy_flow_action
438                                 (sh->default_miss_action);
439         if (sh->encaps_decaps) {
440                 mlx5_hlist_destroy(sh->encaps_decaps);
441                 sh->encaps_decaps = NULL;
442         }
443         if (sh->modify_cmds) {
444                 mlx5_hlist_destroy(sh->modify_cmds);
445                 sh->modify_cmds = NULL;
446         }
447         if (sh->tag_table) {
448                 /* tags should be destroyed with flow before. */
449                 mlx5_hlist_destroy(sh->tag_table);
450                 sh->tag_table = NULL;
451         }
452         if (sh->tunnel_hub) {
453                 mlx5_release_tunnel_hub(sh, priv->dev_port);
454                 sh->tunnel_hub = NULL;
455         }
456         mlx5_cache_list_destroy(&sh->port_id_action_list);
457         mlx5_cache_list_destroy(&sh->push_vlan_action_list);
458         mlx5_free_table_hash_list(priv);
459 }
460
461 /**
462  * Initialize shared data between primary and secondary process.
463  *
464  * A memzone is reserved by primary process and secondary processes attach to
465  * the memzone.
466  *
467  * @return
468  *   0 on success, a negative errno value otherwise and rte_errno is set.
469  */
470 static int
471 mlx5_init_shared_data(void)
472 {
473         const struct rte_memzone *mz;
474         int ret = 0;
475
476         rte_spinlock_lock(&mlx5_shared_data_lock);
477         if (mlx5_shared_data == NULL) {
478                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
479                         /* Allocate shared memory. */
480                         mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA,
481                                                  sizeof(*mlx5_shared_data),
482                                                  SOCKET_ID_ANY, 0);
483                         if (mz == NULL) {
484                                 DRV_LOG(ERR,
485                                         "Cannot allocate mlx5 shared data");
486                                 ret = -rte_errno;
487                                 goto error;
488                         }
489                         mlx5_shared_data = mz->addr;
490                         memset(mlx5_shared_data, 0, sizeof(*mlx5_shared_data));
491                         rte_spinlock_init(&mlx5_shared_data->lock);
492                 } else {
493                         /* Lookup allocated shared memory. */
494                         mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA);
495                         if (mz == NULL) {
496                                 DRV_LOG(ERR,
497                                         "Cannot attach mlx5 shared data");
498                                 ret = -rte_errno;
499                                 goto error;
500                         }
501                         mlx5_shared_data = mz->addr;
502                         memset(&mlx5_local_data, 0, sizeof(mlx5_local_data));
503                 }
504         }
505 error:
506         rte_spinlock_unlock(&mlx5_shared_data_lock);
507         return ret;
508 }
509
510 /**
511  * PMD global initialization.
512  *
513  * Independent from individual device, this function initializes global
514  * per-PMD data structures distinguishing primary and secondary processes.
515  * Hence, each initialization is called once per a process.
516  *
517  * @return
518  *   0 on success, a negative errno value otherwise and rte_errno is set.
519  */
520 static int
521 mlx5_init_once(void)
522 {
523         struct mlx5_shared_data *sd;
524         struct mlx5_local_data *ld = &mlx5_local_data;
525         int ret = 0;
526
527         if (mlx5_init_shared_data())
528                 return -rte_errno;
529         sd = mlx5_shared_data;
530         MLX5_ASSERT(sd);
531         rte_spinlock_lock(&sd->lock);
532         switch (rte_eal_process_type()) {
533         case RTE_PROC_PRIMARY:
534                 if (sd->init_done)
535                         break;
536                 LIST_INIT(&sd->mem_event_cb_list);
537                 rte_rwlock_init(&sd->mem_event_rwlock);
538                 rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
539                                                 mlx5_mr_mem_event_cb, NULL);
540                 ret = mlx5_mp_init_primary(MLX5_MP_NAME,
541                                            mlx5_mp_os_primary_handle);
542                 if (ret)
543                         goto out;
544                 sd->init_done = true;
545                 break;
546         case RTE_PROC_SECONDARY:
547                 if (ld->init_done)
548                         break;
549                 ret = mlx5_mp_init_secondary(MLX5_MP_NAME,
550                                              mlx5_mp_os_secondary_handle);
551                 if (ret)
552                         goto out;
553                 ++sd->secondary_cnt;
554                 ld->init_done = true;
555                 break;
556         default:
557                 break;
558         }
559 out:
560         rte_spinlock_unlock(&sd->lock);
561         return ret;
562 }
563
564 /**
565  * Create the Tx queue DevX/Verbs object.
566  *
567  * @param dev
568  *   Pointer to Ethernet device.
569  * @param idx
570  *   Queue index in DPDK Tx queue array.
571  *
572  * @return
573  *   0 on success, a negative errno value otherwise and rte_errno is set.
574  */
575 static int
576 mlx5_os_txq_obj_new(struct rte_eth_dev *dev, uint16_t idx)
577 {
578         struct mlx5_priv *priv = dev->data->dev_private;
579         struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
580         struct mlx5_txq_ctrl *txq_ctrl =
581                         container_of(txq_data, struct mlx5_txq_ctrl, txq);
582
583         if (txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN)
584                 return mlx5_txq_devx_obj_new(dev, idx);
585 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET
586         if (!priv->config.dv_esw_en)
587                 return mlx5_txq_devx_obj_new(dev, idx);
588 #endif
589         return mlx5_txq_ibv_obj_new(dev, idx);
590 }
591
592 /**
593  * Release an Tx DevX/verbs queue object.
594  *
595  * @param txq_obj
596  *   DevX/Verbs Tx queue object.
597  */
598 static void
599 mlx5_os_txq_obj_release(struct mlx5_txq_obj *txq_obj)
600 {
601         if (txq_obj->txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN) {
602                 mlx5_txq_devx_obj_release(txq_obj);
603                 return;
604         }
605 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET
606         if (!txq_obj->txq_ctrl->priv->config.dv_esw_en) {
607                 mlx5_txq_devx_obj_release(txq_obj);
608                 return;
609         }
610 #endif
611         mlx5_txq_ibv_obj_release(txq_obj);
612 }
613
614 /**
615  * DV flow counter mode detect and config.
616  *
617  * @param dev
618  *   Pointer to rte_eth_dev structure.
619  *
620  */
621 static void
622 mlx5_flow_counter_mode_config(struct rte_eth_dev *dev __rte_unused)
623 {
624 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
625         struct mlx5_priv *priv = dev->data->dev_private;
626         struct mlx5_dev_ctx_shared *sh = priv->sh;
627         bool fallback;
628
629 #ifndef HAVE_IBV_DEVX_ASYNC
630         fallback = true;
631 #else
632         fallback = false;
633         if (!priv->config.devx || !priv->config.dv_flow_en ||
634             !priv->config.hca_attr.flow_counters_dump ||
635             !(priv->config.hca_attr.flow_counter_bulk_alloc_bitmap & 0x4) ||
636             (mlx5_flow_dv_discover_counter_offset_support(dev) == -ENOTSUP))
637                 fallback = true;
638 #endif
639         if (fallback)
640                 DRV_LOG(INFO, "Use fall-back DV counter management. Flow "
641                         "counter dump:%d, bulk_alloc_bitmap:0x%hhx.",
642                         priv->config.hca_attr.flow_counters_dump,
643                         priv->config.hca_attr.flow_counter_bulk_alloc_bitmap);
644         /* Initialize fallback mode only on the port initializes sh. */
645         if (sh->refcnt == 1)
646                 sh->cmng.counter_fallback = fallback;
647         else if (fallback != sh->cmng.counter_fallback)
648                 DRV_LOG(WARNING, "Port %d in sh has different fallback mode "
649                         "with others:%d.", PORT_ID(priv), fallback);
650 #endif
651 }
652
653 /**
654  * Spawn an Ethernet device from Verbs information.
655  *
656  * @param dpdk_dev
657  *   Backing DPDK device.
658  * @param spawn
659  *   Verbs device parameters (name, port, switch_info) to spawn.
660  * @param config
661  *   Device configuration parameters.
662  *
663  * @return
664  *   A valid Ethernet device object on success, NULL otherwise and rte_errno
665  *   is set. The following errors are defined:
666  *
667  *   EBUSY: device is not supposed to be spawned.
668  *   EEXIST: device is already spawned
669  */
670 static struct rte_eth_dev *
671 mlx5_dev_spawn(struct rte_device *dpdk_dev,
672                struct mlx5_dev_spawn_data *spawn,
673                struct mlx5_dev_config *config)
674 {
675         const struct mlx5_switch_info *switch_info = &spawn->info;
676         struct mlx5_dev_ctx_shared *sh = NULL;
677         struct ibv_port_attr port_attr;
678         struct mlx5dv_context dv_attr = { .comp_mask = 0 };
679         struct rte_eth_dev *eth_dev = NULL;
680         struct mlx5_priv *priv = NULL;
681         int err = 0;
682         unsigned int hw_padding = 0;
683         unsigned int mps;
684         unsigned int cqe_comp;
685         unsigned int cqe_pad = 0;
686         unsigned int tunnel_en = 0;
687         unsigned int mpls_en = 0;
688         unsigned int swp = 0;
689         unsigned int mprq = 0;
690         unsigned int mprq_min_stride_size_n = 0;
691         unsigned int mprq_max_stride_size_n = 0;
692         unsigned int mprq_min_stride_num_n = 0;
693         unsigned int mprq_max_stride_num_n = 0;
694         struct rte_ether_addr mac;
695         char name[RTE_ETH_NAME_MAX_LEN];
696         int own_domain_id = 0;
697         uint16_t port_id;
698         unsigned int i;
699 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
700         struct mlx5dv_devx_port devx_port = { .comp_mask = 0 };
701 #endif
702
703         /* Determine if this port representor is supposed to be spawned. */
704         if (switch_info->representor && dpdk_dev->devargs) {
705                 struct rte_eth_devargs eth_da;
706
707                 err = rte_eth_devargs_parse(dpdk_dev->devargs->args, &eth_da);
708                 if (err) {
709                         rte_errno = -err;
710                         DRV_LOG(ERR, "failed to process device arguments: %s",
711                                 strerror(rte_errno));
712                         return NULL;
713                 }
714                 for (i = 0; i < eth_da.nb_representor_ports; ++i)
715                         if (eth_da.representor_ports[i] ==
716                             (uint16_t)switch_info->port_name)
717                                 break;
718                 if (i == eth_da.nb_representor_ports) {
719                         rte_errno = EBUSY;
720                         return NULL;
721                 }
722         }
723         /* Build device name. */
724         if (spawn->pf_bond <  0) {
725                 /* Single device. */
726                 if (!switch_info->representor)
727                         strlcpy(name, dpdk_dev->name, sizeof(name));
728                 else
729                         snprintf(name, sizeof(name), "%s_representor_%u",
730                                  dpdk_dev->name, switch_info->port_name);
731         } else {
732                 /* Bonding device. */
733                 if (!switch_info->representor)
734                         snprintf(name, sizeof(name), "%s_%s",
735                                  dpdk_dev->name,
736                                  mlx5_os_get_dev_device_name(spawn->phys_dev));
737                 else
738                         snprintf(name, sizeof(name), "%s_%s_representor_%u",
739                                  dpdk_dev->name,
740                                  mlx5_os_get_dev_device_name(spawn->phys_dev),
741                                  switch_info->port_name);
742         }
743         /* check if the device is already spawned */
744         if (rte_eth_dev_get_port_by_name(name, &port_id) == 0) {
745                 rte_errno = EEXIST;
746                 return NULL;
747         }
748         DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name);
749         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
750                 struct mlx5_mp_id mp_id;
751
752                 eth_dev = rte_eth_dev_attach_secondary(name);
753                 if (eth_dev == NULL) {
754                         DRV_LOG(ERR, "can not attach rte ethdev");
755                         rte_errno = ENOMEM;
756                         return NULL;
757                 }
758                 priv = eth_dev->data->dev_private;
759                 if (priv->sh->bond_dev != UINT16_MAX)
760                         /* For bonding port, use primary PCI device. */
761                         eth_dev->device =
762                                 rte_eth_devices[priv->sh->bond_dev].device;
763                 else
764                         eth_dev->device = dpdk_dev;
765                 eth_dev->dev_ops = &mlx5_os_dev_sec_ops;
766                 eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status;
767                 eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status;
768                 err = mlx5_proc_priv_init(eth_dev);
769                 if (err)
770                         return NULL;
771                 mp_id.port_id = eth_dev->data->port_id;
772                 strlcpy(mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
773                 /* Receive command fd from primary process */
774                 err = mlx5_mp_req_verbs_cmd_fd(&mp_id);
775                 if (err < 0)
776                         goto err_secondary;
777                 /* Remap UAR for Tx queues. */
778                 err = mlx5_tx_uar_init_secondary(eth_dev, err);
779                 if (err)
780                         goto err_secondary;
781                 /*
782                  * Ethdev pointer is still required as input since
783                  * the primary device is not accessible from the
784                  * secondary process.
785                  */
786                 eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev);
787                 eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev);
788                 return eth_dev;
789 err_secondary:
790                 mlx5_dev_close(eth_dev);
791                 return NULL;
792         }
793         /*
794          * Some parameters ("tx_db_nc" in particularly) are needed in
795          * advance to create dv/verbs device context. We proceed the
796          * devargs here to get ones, and later proceed devargs again
797          * to override some hardware settings.
798          */
799         err = mlx5_args(config, dpdk_dev->devargs);
800         if (err) {
801                 err = rte_errno;
802                 DRV_LOG(ERR, "failed to process device arguments: %s",
803                         strerror(rte_errno));
804                 goto error;
805         }
806         if (config->dv_miss_info) {
807                 if (switch_info->master || switch_info->representor)
808                         config->dv_xmeta_en = MLX5_XMETA_MODE_META16;
809         }
810         mlx5_malloc_mem_select(config->sys_mem_en);
811         sh = mlx5_alloc_shared_dev_ctx(spawn, config);
812         if (!sh)
813                 return NULL;
814         config->devx = sh->devx;
815 #ifdef HAVE_MLX5DV_DR_ACTION_DEST_DEVX_TIR
816         config->dest_tir = 1;
817 #endif
818 #ifdef HAVE_IBV_MLX5_MOD_SWP
819         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP;
820 #endif
821         /*
822          * Multi-packet send is supported by ConnectX-4 Lx PF as well
823          * as all ConnectX-5 devices.
824          */
825 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
826         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS;
827 #endif
828 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
829         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ;
830 #endif
831         mlx5_glue->dv_query_device(sh->ctx, &dv_attr);
832         if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) {
833                 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) {
834                         DRV_LOG(DEBUG, "enhanced MPW is supported");
835                         mps = MLX5_MPW_ENHANCED;
836                 } else {
837                         DRV_LOG(DEBUG, "MPW is supported");
838                         mps = MLX5_MPW;
839                 }
840         } else {
841                 DRV_LOG(DEBUG, "MPW isn't supported");
842                 mps = MLX5_MPW_DISABLED;
843         }
844 #ifdef HAVE_IBV_MLX5_MOD_SWP
845         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP)
846                 swp = dv_attr.sw_parsing_caps.sw_parsing_offloads;
847         DRV_LOG(DEBUG, "SWP support: %u", swp);
848 #endif
849         config->swp = !!swp;
850 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
851         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) {
852                 struct mlx5dv_striding_rq_caps mprq_caps =
853                         dv_attr.striding_rq_caps;
854
855                 DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d",
856                         mprq_caps.min_single_stride_log_num_of_bytes);
857                 DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d",
858                         mprq_caps.max_single_stride_log_num_of_bytes);
859                 DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d",
860                         mprq_caps.min_single_wqe_log_num_of_strides);
861                 DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d",
862                         mprq_caps.max_single_wqe_log_num_of_strides);
863                 DRV_LOG(DEBUG, "\tsupported_qpts: %d",
864                         mprq_caps.supported_qpts);
865                 DRV_LOG(DEBUG, "device supports Multi-Packet RQ");
866                 mprq = 1;
867                 mprq_min_stride_size_n =
868                         mprq_caps.min_single_stride_log_num_of_bytes;
869                 mprq_max_stride_size_n =
870                         mprq_caps.max_single_stride_log_num_of_bytes;
871                 mprq_min_stride_num_n =
872                         mprq_caps.min_single_wqe_log_num_of_strides;
873                 mprq_max_stride_num_n =
874                         mprq_caps.max_single_wqe_log_num_of_strides;
875         }
876 #endif
877         if (RTE_CACHE_LINE_SIZE == 128 &&
878             !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP))
879                 cqe_comp = 0;
880         else
881                 cqe_comp = 1;
882         config->cqe_comp = cqe_comp;
883 #ifdef HAVE_IBV_MLX5_MOD_CQE_128B_PAD
884         /* Whether device supports 128B Rx CQE padding. */
885         cqe_pad = RTE_CACHE_LINE_SIZE == 128 &&
886                   (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_PAD);
887 #endif
888 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
889         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) {
890                 tunnel_en = ((dv_attr.tunnel_offloads_caps &
891                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) &&
892                              (dv_attr.tunnel_offloads_caps &
893                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE) &&
894                              (dv_attr.tunnel_offloads_caps &
895                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GENEVE));
896         }
897         DRV_LOG(DEBUG, "tunnel offloading is %ssupported",
898                 tunnel_en ? "" : "not ");
899 #else
900         DRV_LOG(WARNING,
901                 "tunnel offloading disabled due to old OFED/rdma-core version");
902 #endif
903         config->tunnel_en = tunnel_en;
904 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
905         mpls_en = ((dv_attr.tunnel_offloads_caps &
906                     MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) &&
907                    (dv_attr.tunnel_offloads_caps &
908                     MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP));
909         DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported",
910                 mpls_en ? "" : "not ");
911 #else
912         DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to"
913                 " old OFED/rdma-core version or firmware configuration");
914 #endif
915         config->mpls_en = mpls_en;
916         /* Check port status. */
917         err = mlx5_glue->query_port(sh->ctx, spawn->phys_port, &port_attr);
918         if (err) {
919                 DRV_LOG(ERR, "port query failed: %s", strerror(err));
920                 goto error;
921         }
922         if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
923                 DRV_LOG(ERR, "port is not configured in Ethernet mode");
924                 err = EINVAL;
925                 goto error;
926         }
927         if (port_attr.state != IBV_PORT_ACTIVE)
928                 DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)",
929                         mlx5_glue->port_state_str(port_attr.state),
930                         port_attr.state);
931         /* Allocate private eth device data. */
932         priv = mlx5_malloc(MLX5_MEM_ZERO | MLX5_MEM_RTE,
933                            sizeof(*priv),
934                            RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
935         if (priv == NULL) {
936                 DRV_LOG(ERR, "priv allocation failure");
937                 err = ENOMEM;
938                 goto error;
939         }
940         priv->sh = sh;
941         priv->dev_port = spawn->phys_port;
942         priv->pci_dev = spawn->pci_dev;
943         priv->mtu = RTE_ETHER_MTU;
944         priv->mp_id.port_id = port_id;
945         strlcpy(priv->mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
946         /* Some internal functions rely on Netlink sockets, open them now. */
947         priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA);
948         priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE);
949         priv->representor = !!switch_info->representor;
950         priv->master = !!switch_info->master;
951         priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
952         priv->vport_meta_tag = 0;
953         priv->vport_meta_mask = 0;
954         priv->pf_bond = spawn->pf_bond;
955 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
956         /*
957          * The DevX port query API is implemented. E-Switch may use
958          * either vport or reg_c[0] metadata register to match on
959          * vport index. The engaged part of metadata register is
960          * defined by mask.
961          */
962         if (switch_info->representor || switch_info->master) {
963                 devx_port.comp_mask = MLX5DV_DEVX_PORT_VPORT |
964                                       MLX5DV_DEVX_PORT_MATCH_REG_C_0;
965                 err = mlx5_glue->devx_port_query(sh->ctx, spawn->phys_port,
966                                                  &devx_port);
967                 if (err) {
968                         DRV_LOG(WARNING,
969                                 "can't query devx port %d on device %s",
970                                 spawn->phys_port,
971                                 mlx5_os_get_dev_device_name(spawn->phys_dev));
972                         devx_port.comp_mask = 0;
973                 }
974         }
975         if (devx_port.comp_mask & MLX5DV_DEVX_PORT_MATCH_REG_C_0) {
976                 priv->vport_meta_tag = devx_port.reg_c_0.value;
977                 priv->vport_meta_mask = devx_port.reg_c_0.mask;
978                 if (!priv->vport_meta_mask) {
979                         DRV_LOG(ERR, "vport zero mask for port %d"
980                                      " on bonding device %s",
981                                      spawn->phys_port,
982                                      mlx5_os_get_dev_device_name
983                                                         (spawn->phys_dev));
984                         err = ENOTSUP;
985                         goto error;
986                 }
987                 if (priv->vport_meta_tag & ~priv->vport_meta_mask) {
988                         DRV_LOG(ERR, "invalid vport tag for port %d"
989                                      " on bonding device %s",
990                                      spawn->phys_port,
991                                      mlx5_os_get_dev_device_name
992                                                         (spawn->phys_dev));
993                         err = ENOTSUP;
994                         goto error;
995                 }
996         }
997         if (devx_port.comp_mask & MLX5DV_DEVX_PORT_VPORT) {
998                 priv->vport_id = devx_port.vport_num;
999         } else if (spawn->pf_bond >= 0) {
1000                 DRV_LOG(ERR, "can't deduce vport index for port %d"
1001                              " on bonding device %s",
1002                              spawn->phys_port,
1003                              mlx5_os_get_dev_device_name(spawn->phys_dev));
1004                 err = ENOTSUP;
1005                 goto error;
1006         } else {
1007                 /* Suppose vport index in compatible way. */
1008                 priv->vport_id = switch_info->representor ?
1009                                  switch_info->port_name + 1 : -1;
1010         }
1011 #else
1012         /*
1013          * Kernel/rdma_core support single E-Switch per PF configurations
1014          * only and vport_id field contains the vport index for
1015          * associated VF, which is deduced from representor port name.
1016          * For example, let's have the IB device port 10, it has
1017          * attached network device eth0, which has port name attribute
1018          * pf0vf2, we can deduce the VF number as 2, and set vport index
1019          * as 3 (2+1). This assigning schema should be changed if the
1020          * multiple E-Switch instances per PF configurations or/and PCI
1021          * subfunctions are added.
1022          */
1023         priv->vport_id = switch_info->representor ?
1024                          switch_info->port_name + 1 : -1;
1025 #endif
1026         /* representor_id field keeps the unmodified VF index. */
1027         priv->representor_id = switch_info->representor ?
1028                                switch_info->port_name : -1;
1029         /*
1030          * Look for sibling devices in order to reuse their switch domain
1031          * if any, otherwise allocate one.
1032          */
1033         MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
1034                 const struct mlx5_priv *opriv =
1035                         rte_eth_devices[port_id].data->dev_private;
1036
1037                 if (!opriv ||
1038                     opriv->sh != priv->sh ||
1039                         opriv->domain_id ==
1040                         RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID)
1041                         continue;
1042                 priv->domain_id = opriv->domain_id;
1043                 break;
1044         }
1045         if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
1046                 err = rte_eth_switch_domain_alloc(&priv->domain_id);
1047                 if (err) {
1048                         err = rte_errno;
1049                         DRV_LOG(ERR, "unable to allocate switch domain: %s",
1050                                 strerror(rte_errno));
1051                         goto error;
1052                 }
1053                 own_domain_id = 1;
1054         }
1055         /* Override some values set by hardware configuration. */
1056         mlx5_args(config, dpdk_dev->devargs);
1057         err = mlx5_dev_check_sibling_config(priv, config);
1058         if (err)
1059                 goto error;
1060         config->hw_csum = !!(sh->device_attr.device_cap_flags_ex &
1061                             IBV_DEVICE_RAW_IP_CSUM);
1062         DRV_LOG(DEBUG, "checksum offloading is %ssupported",
1063                 (config->hw_csum ? "" : "not "));
1064 #if !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) && \
1065         !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45)
1066         DRV_LOG(DEBUG, "counters are not supported");
1067 #endif
1068 #if !defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_MLX5DV_DR)
1069         if (config->dv_flow_en) {
1070                 DRV_LOG(WARNING, "DV flow is not supported");
1071                 config->dv_flow_en = 0;
1072         }
1073 #endif
1074         config->ind_table_max_size =
1075                 sh->device_attr.max_rwq_indirection_table_size;
1076         /*
1077          * Remove this check once DPDK supports larger/variable
1078          * indirection tables.
1079          */
1080         if (config->ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512)
1081                 config->ind_table_max_size = ETH_RSS_RETA_SIZE_512;
1082         DRV_LOG(DEBUG, "maximum Rx indirection table size is %u",
1083                 config->ind_table_max_size);
1084         config->hw_vlan_strip = !!(sh->device_attr.raw_packet_caps &
1085                                   IBV_RAW_PACKET_CAP_CVLAN_STRIPPING);
1086         DRV_LOG(DEBUG, "VLAN stripping is %ssupported",
1087                 (config->hw_vlan_strip ? "" : "not "));
1088         config->hw_fcs_strip = !!(sh->device_attr.raw_packet_caps &
1089                                  IBV_RAW_PACKET_CAP_SCATTER_FCS);
1090 #if defined(HAVE_IBV_WQ_FLAG_RX_END_PADDING)
1091         hw_padding = !!sh->device_attr.rx_pad_end_addr_align;
1092 #elif defined(HAVE_IBV_WQ_FLAGS_PCI_WRITE_END_PADDING)
1093         hw_padding = !!(sh->device_attr.device_cap_flags_ex &
1094                         IBV_DEVICE_PCI_WRITE_END_PADDING);
1095 #endif
1096         if (config->hw_padding && !hw_padding) {
1097                 DRV_LOG(DEBUG, "Rx end alignment padding isn't supported");
1098                 config->hw_padding = 0;
1099         } else if (config->hw_padding) {
1100                 DRV_LOG(DEBUG, "Rx end alignment padding is enabled");
1101         }
1102         config->tso = (sh->device_attr.max_tso > 0 &&
1103                       (sh->device_attr.tso_supported_qpts &
1104                        (1 << IBV_QPT_RAW_PACKET)));
1105         if (config->tso)
1106                 config->tso_max_payload_sz = sh->device_attr.max_tso;
1107         /*
1108          * MPW is disabled by default, while the Enhanced MPW is enabled
1109          * by default.
1110          */
1111         if (config->mps == MLX5_ARG_UNSET)
1112                 config->mps = (mps == MLX5_MPW_ENHANCED) ? MLX5_MPW_ENHANCED :
1113                                                           MLX5_MPW_DISABLED;
1114         else
1115                 config->mps = config->mps ? mps : MLX5_MPW_DISABLED;
1116         DRV_LOG(INFO, "%sMPS is %s",
1117                 config->mps == MLX5_MPW_ENHANCED ? "enhanced " :
1118                 config->mps == MLX5_MPW ? "legacy " : "",
1119                 config->mps != MLX5_MPW_DISABLED ? "enabled" : "disabled");
1120         if (config->cqe_comp && !cqe_comp) {
1121                 DRV_LOG(WARNING, "Rx CQE compression isn't supported");
1122                 config->cqe_comp = 0;
1123         }
1124         if (config->cqe_pad && !cqe_pad) {
1125                 DRV_LOG(WARNING, "Rx CQE padding isn't supported");
1126                 config->cqe_pad = 0;
1127         } else if (config->cqe_pad) {
1128                 DRV_LOG(INFO, "Rx CQE padding is enabled");
1129         }
1130         if (config->devx) {
1131                 err = mlx5_devx_cmd_query_hca_attr(sh->ctx, &config->hca_attr);
1132                 if (err) {
1133                         err = -err;
1134                         goto error;
1135                 }
1136 #ifdef HAVE_MLX5DV_DR_ACTION_FLOW_HIT
1137                 if (config->hca_attr.flow_hit_aso) {
1138                         sh->flow_hit_aso_en = 1;
1139                         err = mlx5_flow_aso_age_mng_init(sh);
1140                         if (err) {
1141                                 err = -err;
1142                                 goto error;
1143                         }
1144                         DRV_LOG(DEBUG, "Flow Hit ASO is supported.");
1145                 }
1146 #endif /* HAVE_MLX5DV_DR_ACTION_FLOW_HIT */
1147                 /* Check relax ordering support. */
1148                 if (!haswell_broadwell_cpu) {
1149                         sh->cmng.relaxed_ordering_write =
1150                                 config->hca_attr.relaxed_ordering_write;
1151                         sh->cmng.relaxed_ordering_read =
1152                                 config->hca_attr.relaxed_ordering_read;
1153                 } else {
1154                         sh->cmng.relaxed_ordering_read = 0;
1155                         sh->cmng.relaxed_ordering_write = 0;
1156                 }
1157                 /* Check for LRO support. */
1158                 if (config->dest_tir && config->hca_attr.lro_cap &&
1159                     config->dv_flow_en) {
1160                         /* TBD check tunnel lro caps. */
1161                         config->lro.supported = config->hca_attr.lro_cap;
1162                         DRV_LOG(DEBUG, "Device supports LRO");
1163                         /*
1164                          * If LRO timeout is not configured by application,
1165                          * use the minimal supported value.
1166                          */
1167                         if (!config->lro.timeout)
1168                                 config->lro.timeout =
1169                                 config->hca_attr.lro_timer_supported_periods[0];
1170                         DRV_LOG(DEBUG, "LRO session timeout set to %d usec",
1171                                 config->lro.timeout);
1172                         DRV_LOG(DEBUG, "LRO minimal size of TCP segment "
1173                                 "required for coalescing is %d bytes",
1174                                 config->hca_attr.lro_min_mss_size);
1175                 }
1176 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER)
1177                 if (config->hca_attr.qos.sup &&
1178                     config->hca_attr.qos.srtcm_sup &&
1179                     config->dv_flow_en) {
1180                         uint8_t reg_c_mask =
1181                                 config->hca_attr.qos.flow_meter_reg_c_ids;
1182                         /*
1183                          * Meter needs two REG_C's for color match and pre-sfx
1184                          * flow match. Here get the REG_C for color match.
1185                          * REG_C_0 and REG_C_1 is reserved for metadata feature.
1186                          */
1187                         reg_c_mask &= 0xfc;
1188                         if (__builtin_popcount(reg_c_mask) < 1) {
1189                                 priv->mtr_en = 0;
1190                                 DRV_LOG(WARNING, "No available register for"
1191                                         " meter.");
1192                         } else {
1193                                 priv->mtr_color_reg = ffs(reg_c_mask) - 1 +
1194                                                       REG_C_0;
1195                                 priv->mtr_en = 1;
1196                                 priv->mtr_reg_share =
1197                                       config->hca_attr.qos.flow_meter_reg_share;
1198                                 DRV_LOG(DEBUG, "The REG_C meter uses is %d",
1199                                         priv->mtr_color_reg);
1200                         }
1201                 }
1202 #endif
1203 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_SAMPLE)
1204                 if (config->hca_attr.log_max_ft_sampler_num > 0  &&
1205                     config->dv_flow_en) {
1206                         priv->sampler_en = 1;
1207                         DRV_LOG(DEBUG, "The Sampler enabled!\n");
1208                 } else {
1209                         priv->sampler_en = 0;
1210                         if (!config->hca_attr.log_max_ft_sampler_num)
1211                                 DRV_LOG(WARNING, "No available register for"
1212                                                 " Sampler.");
1213                         else
1214                                 DRV_LOG(DEBUG, "DV flow is not supported!\n");
1215                 }
1216 #endif
1217         }
1218         if (config->tx_pp) {
1219                 DRV_LOG(DEBUG, "Timestamp counter frequency %u kHz",
1220                         config->hca_attr.dev_freq_khz);
1221                 DRV_LOG(DEBUG, "Packet pacing is %ssupported",
1222                         config->hca_attr.qos.packet_pacing ? "" : "not ");
1223                 DRV_LOG(DEBUG, "Cross channel ops are %ssupported",
1224                         config->hca_attr.cross_channel ? "" : "not ");
1225                 DRV_LOG(DEBUG, "WQE index ignore is %ssupported",
1226                         config->hca_attr.wqe_index_ignore ? "" : "not ");
1227                 DRV_LOG(DEBUG, "Non-wire SQ feature is %ssupported",
1228                         config->hca_attr.non_wire_sq ? "" : "not ");
1229                 DRV_LOG(DEBUG, "Static WQE SQ feature is %ssupported (%d)",
1230                         config->hca_attr.log_max_static_sq_wq ? "" : "not ",
1231                         config->hca_attr.log_max_static_sq_wq);
1232                 DRV_LOG(DEBUG, "WQE rate PP mode is %ssupported",
1233                         config->hca_attr.qos.wqe_rate_pp ? "" : "not ");
1234                 if (!config->devx) {
1235                         DRV_LOG(ERR, "DevX is required for packet pacing");
1236                         err = ENODEV;
1237                         goto error;
1238                 }
1239                 if (!config->hca_attr.qos.packet_pacing) {
1240                         DRV_LOG(ERR, "Packet pacing is not supported");
1241                         err = ENODEV;
1242                         goto error;
1243                 }
1244                 if (!config->hca_attr.cross_channel) {
1245                         DRV_LOG(ERR, "Cross channel operations are"
1246                                      " required for packet pacing");
1247                         err = ENODEV;
1248                         goto error;
1249                 }
1250                 if (!config->hca_attr.wqe_index_ignore) {
1251                         DRV_LOG(ERR, "WQE index ignore feature is"
1252                                      " required for packet pacing");
1253                         err = ENODEV;
1254                         goto error;
1255                 }
1256                 if (!config->hca_attr.non_wire_sq) {
1257                         DRV_LOG(ERR, "Non-wire SQ feature is"
1258                                      " required for packet pacing");
1259                         err = ENODEV;
1260                         goto error;
1261                 }
1262                 if (!config->hca_attr.log_max_static_sq_wq) {
1263                         DRV_LOG(ERR, "Static WQE SQ feature is"
1264                                      " required for packet pacing");
1265                         err = ENODEV;
1266                         goto error;
1267                 }
1268                 if (!config->hca_attr.qos.wqe_rate_pp) {
1269                         DRV_LOG(ERR, "WQE rate mode is required"
1270                                      " for packet pacing");
1271                         err = ENODEV;
1272                         goto error;
1273                 }
1274 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET
1275                 DRV_LOG(ERR, "DevX does not provide UAR offset,"
1276                              " can't create queues for packet pacing");
1277                 err = ENODEV;
1278                 goto error;
1279 #endif
1280         }
1281         if (config->devx) {
1282                 uint32_t reg[MLX5_ST_SZ_DW(register_mtutc)];
1283
1284                 err = config->hca_attr.access_register_user ?
1285                         mlx5_devx_cmd_register_read
1286                                 (sh->ctx, MLX5_REGISTER_ID_MTUTC, 0,
1287                                 reg, MLX5_ST_SZ_DW(register_mtutc)) : ENOTSUP;
1288                 if (!err) {
1289                         uint32_t ts_mode;
1290
1291                         /* MTUTC register is read successfully. */
1292                         ts_mode = MLX5_GET(register_mtutc, reg,
1293                                            time_stamp_mode);
1294                         if (ts_mode == MLX5_MTUTC_TIMESTAMP_MODE_REAL_TIME)
1295                                 config->rt_timestamp = 1;
1296                 } else {
1297                         /* Kernel does not support register reading. */
1298                         if (config->hca_attr.dev_freq_khz ==
1299                                                  (NS_PER_S / MS_PER_S))
1300                                 config->rt_timestamp = 1;
1301                 }
1302         }
1303         /*
1304          * If HW has bug working with tunnel packet decapsulation and
1305          * scatter FCS, and decapsulation is needed, clear the hw_fcs_strip
1306          * bit. Then DEV_RX_OFFLOAD_KEEP_CRC bit will not be set anymore.
1307          */
1308         if (config->hca_attr.scatter_fcs_w_decap_disable && config->decap_en)
1309                 config->hw_fcs_strip = 0;
1310         DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported",
1311                 (config->hw_fcs_strip ? "" : "not "));
1312         if (config->mprq.enabled && mprq) {
1313                 if (config->mprq.stride_num_n &&
1314                     (config->mprq.stride_num_n > mprq_max_stride_num_n ||
1315                      config->mprq.stride_num_n < mprq_min_stride_num_n)) {
1316                         config->mprq.stride_num_n =
1317                                 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N,
1318                                                 mprq_min_stride_num_n),
1319                                         mprq_max_stride_num_n);
1320                         DRV_LOG(WARNING,
1321                                 "the number of strides"
1322                                 " for Multi-Packet RQ is out of range,"
1323                                 " setting default value (%u)",
1324                                 1 << config->mprq.stride_num_n);
1325                 }
1326                 if (config->mprq.stride_size_n &&
1327                     (config->mprq.stride_size_n > mprq_max_stride_size_n ||
1328                      config->mprq.stride_size_n < mprq_min_stride_size_n)) {
1329                         config->mprq.stride_size_n =
1330                                 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_SIZE_N,
1331                                                 mprq_min_stride_size_n),
1332                                         mprq_max_stride_size_n);
1333                         DRV_LOG(WARNING,
1334                                 "the size of a stride"
1335                                 " for Multi-Packet RQ is out of range,"
1336                                 " setting default value (%u)",
1337                                 1 << config->mprq.stride_size_n);
1338                 }
1339                 config->mprq.min_stride_size_n = mprq_min_stride_size_n;
1340                 config->mprq.max_stride_size_n = mprq_max_stride_size_n;
1341         } else if (config->mprq.enabled && !mprq) {
1342                 DRV_LOG(WARNING, "Multi-Packet RQ isn't supported");
1343                 config->mprq.enabled = 0;
1344         }
1345         if (config->max_dump_files_num == 0)
1346                 config->max_dump_files_num = 128;
1347         eth_dev = rte_eth_dev_allocate(name);
1348         if (eth_dev == NULL) {
1349                 DRV_LOG(ERR, "can not allocate rte ethdev");
1350                 err = ENOMEM;
1351                 goto error;
1352         }
1353         if (priv->representor) {
1354                 eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
1355                 eth_dev->data->representor_id = priv->representor_id;
1356         }
1357         /*
1358          * Store associated network device interface index. This index
1359          * is permanent throughout the lifetime of device. So, we may store
1360          * the ifindex here and use the cached value further.
1361          */
1362         MLX5_ASSERT(spawn->ifindex);
1363         priv->if_index = spawn->ifindex;
1364         if (priv->pf_bond >= 0 && priv->master) {
1365                 /* Get bond interface info */
1366                 err = mlx5_sysfs_bond_info(priv->if_index,
1367                                      &priv->bond_ifindex,
1368                                      priv->bond_name);
1369                 if (err)
1370                         DRV_LOG(ERR, "unable to get bond info: %s",
1371                                 strerror(rte_errno));
1372                 else
1373                         DRV_LOG(INFO, "PF device %u, bond device %u(%s)",
1374                                 priv->if_index, priv->bond_ifindex,
1375                                 priv->bond_name);
1376         }
1377         eth_dev->data->dev_private = priv;
1378         priv->dev_data = eth_dev->data;
1379         eth_dev->data->mac_addrs = priv->mac;
1380         if (spawn->pf_bond < 0) {
1381                 eth_dev->device = dpdk_dev;
1382         } else {
1383                 /* Use primary bond PCI as device. */
1384                 if (sh->bond_dev == UINT16_MAX) {
1385                         sh->bond_dev = eth_dev->data->port_id;
1386                         eth_dev->device = dpdk_dev;
1387                 } else {
1388                         eth_dev->device = rte_eth_devices[sh->bond_dev].device;
1389                 }
1390         }
1391         eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
1392         /* Configure the first MAC address by default. */
1393         if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) {
1394                 DRV_LOG(ERR,
1395                         "port %u cannot get MAC address, is mlx5_en"
1396                         " loaded? (errno: %s)",
1397                         eth_dev->data->port_id, strerror(rte_errno));
1398                 err = ENODEV;
1399                 goto error;
1400         }
1401         DRV_LOG(INFO,
1402                 "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
1403                 eth_dev->data->port_id,
1404                 mac.addr_bytes[0], mac.addr_bytes[1],
1405                 mac.addr_bytes[2], mac.addr_bytes[3],
1406                 mac.addr_bytes[4], mac.addr_bytes[5]);
1407 #ifdef RTE_LIBRTE_MLX5_DEBUG
1408         {
1409                 char ifname[IF_NAMESIZE];
1410
1411                 if (mlx5_get_ifname(eth_dev, &ifname) == 0)
1412                         DRV_LOG(DEBUG, "port %u ifname is \"%s\"",
1413                                 eth_dev->data->port_id, ifname);
1414                 else
1415                         DRV_LOG(DEBUG, "port %u ifname is unknown",
1416                                 eth_dev->data->port_id);
1417         }
1418 #endif
1419         /* Get actual MTU if possible. */
1420         err = mlx5_get_mtu(eth_dev, &priv->mtu);
1421         if (err) {
1422                 err = rte_errno;
1423                 goto error;
1424         }
1425         DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id,
1426                 priv->mtu);
1427         /* Initialize burst functions to prevent crashes before link-up. */
1428         eth_dev->rx_pkt_burst = removed_rx_burst;
1429         eth_dev->tx_pkt_burst = removed_tx_burst;
1430         eth_dev->dev_ops = &mlx5_os_dev_ops;
1431         eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status;
1432         eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status;
1433         eth_dev->rx_queue_count = mlx5_rx_queue_count;
1434         /* Register MAC address. */
1435         claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
1436         if (config->vf && config->vf_nl_en)
1437                 mlx5_nl_mac_addr_sync(priv->nl_socket_route,
1438                                       mlx5_ifindex(eth_dev),
1439                                       eth_dev->data->mac_addrs,
1440                                       MLX5_MAX_MAC_ADDRESSES);
1441         priv->flows = 0;
1442         priv->ctrl_flows = 0;
1443         rte_spinlock_init(&priv->flow_list_lock);
1444         TAILQ_INIT(&priv->flow_meters);
1445         TAILQ_INIT(&priv->flow_meter_profiles);
1446         /* Hint libmlx5 to use PMD allocator for data plane resources */
1447         mlx5_glue->dv_set_context_attr(sh->ctx,
1448                         MLX5DV_CTX_ATTR_BUF_ALLOCATORS,
1449                         (void *)((uintptr_t)&(struct mlx5dv_ctx_allocators){
1450                                 .alloc = &mlx5_alloc_verbs_buf,
1451                                 .free = &mlx5_free_verbs_buf,
1452                                 .data = priv,
1453                         }));
1454         /* Bring Ethernet device up. */
1455         DRV_LOG(DEBUG, "port %u forcing Ethernet interface up",
1456                 eth_dev->data->port_id);
1457         mlx5_set_link_up(eth_dev);
1458         /*
1459          * Even though the interrupt handler is not installed yet,
1460          * interrupts will still trigger on the async_fd from
1461          * Verbs context returned by ibv_open_device().
1462          */
1463         mlx5_link_update(eth_dev, 0);
1464 #ifdef HAVE_MLX5DV_DR_ESWITCH
1465         if (!(config->hca_attr.eswitch_manager && config->dv_flow_en &&
1466               (switch_info->representor || switch_info->master)))
1467                 config->dv_esw_en = 0;
1468 #else
1469         config->dv_esw_en = 0;
1470 #endif
1471         /* Detect minimal data bytes to inline. */
1472         mlx5_set_min_inline(spawn, config);
1473         /* Store device configuration on private structure. */
1474         priv->config = *config;
1475         /* Create context for virtual machine VLAN workaround. */
1476         priv->vmwa_context = mlx5_vlan_vmwa_init(eth_dev, spawn->ifindex);
1477         if (config->dv_flow_en) {
1478                 err = mlx5_alloc_shared_dr(priv);
1479                 if (err)
1480                         goto error;
1481         }
1482         if (config->devx && config->dv_flow_en && config->dest_tir) {
1483                 priv->obj_ops = devx_obj_ops;
1484                 priv->obj_ops.drop_action_create =
1485                                                 ibv_obj_ops.drop_action_create;
1486                 priv->obj_ops.drop_action_destroy =
1487                                                 ibv_obj_ops.drop_action_destroy;
1488 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET
1489                 priv->obj_ops.txq_obj_modify = ibv_obj_ops.txq_obj_modify;
1490 #else
1491                 if (config->dv_esw_en)
1492                         priv->obj_ops.txq_obj_modify =
1493                                                 ibv_obj_ops.txq_obj_modify;
1494 #endif
1495                 /* Use specific wrappers for Tx object. */
1496                 priv->obj_ops.txq_obj_new = mlx5_os_txq_obj_new;
1497                 priv->obj_ops.txq_obj_release = mlx5_os_txq_obj_release;
1498
1499         } else {
1500                 priv->obj_ops = ibv_obj_ops;
1501         }
1502         priv->drop_queue.hrxq = mlx5_drop_action_create(eth_dev);
1503         if (!priv->drop_queue.hrxq)
1504                 goto error;
1505         /* Supported Verbs flow priority number detection. */
1506         err = mlx5_flow_discover_priorities(eth_dev);
1507         if (err < 0) {
1508                 err = -err;
1509                 goto error;
1510         }
1511         priv->config.flow_prio = err;
1512         if (!priv->config.dv_esw_en &&
1513             priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
1514                 DRV_LOG(WARNING, "metadata mode %u is not supported "
1515                                  "(no E-Switch)", priv->config.dv_xmeta_en);
1516                 priv->config.dv_xmeta_en = MLX5_XMETA_MODE_LEGACY;
1517         }
1518         mlx5_set_metadata_mask(eth_dev);
1519         if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1520             !priv->sh->dv_regc0_mask) {
1521                 DRV_LOG(ERR, "metadata mode %u is not supported "
1522                              "(no metadata reg_c[0] is available)",
1523                              priv->config.dv_xmeta_en);
1524                         err = ENOTSUP;
1525                         goto error;
1526         }
1527         mlx5_cache_list_init(&priv->hrxqs, "hrxq", 0, eth_dev,
1528                              mlx5_hrxq_create_cb,
1529                              mlx5_hrxq_match_cb,
1530                              mlx5_hrxq_remove_cb);
1531         /* Query availability of metadata reg_c's. */
1532         err = mlx5_flow_discover_mreg_c(eth_dev);
1533         if (err < 0) {
1534                 err = -err;
1535                 goto error;
1536         }
1537         if (!mlx5_flow_ext_mreg_supported(eth_dev)) {
1538                 DRV_LOG(DEBUG,
1539                         "port %u extensive metadata register is not supported",
1540                         eth_dev->data->port_id);
1541                 if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
1542                         DRV_LOG(ERR, "metadata mode %u is not supported "
1543                                      "(no metadata registers available)",
1544                                      priv->config.dv_xmeta_en);
1545                         err = ENOTSUP;
1546                         goto error;
1547                 }
1548         }
1549         if (priv->config.dv_flow_en &&
1550             priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1551             mlx5_flow_ext_mreg_supported(eth_dev) &&
1552             priv->sh->dv_regc0_mask) {
1553                 priv->mreg_cp_tbl = mlx5_hlist_create(MLX5_FLOW_MREG_HNAME,
1554                                                       MLX5_FLOW_MREG_HTABLE_SZ,
1555                                                       0, 0,
1556                                                       flow_dv_mreg_create_cb,
1557                                                       NULL,
1558                                                       flow_dv_mreg_remove_cb);
1559                 if (!priv->mreg_cp_tbl) {
1560                         err = ENOMEM;
1561                         goto error;
1562                 }
1563                 priv->mreg_cp_tbl->ctx = eth_dev;
1564         }
1565         rte_spinlock_init(&priv->shared_act_sl);
1566         mlx5_flow_counter_mode_config(eth_dev);
1567         if (priv->config.dv_flow_en)
1568                 eth_dev->data->dev_flags |= RTE_ETH_DEV_FLOW_OPS_THREAD_SAFE;
1569         return eth_dev;
1570 error:
1571         if (priv) {
1572                 if (priv->mreg_cp_tbl)
1573                         mlx5_hlist_destroy(priv->mreg_cp_tbl);
1574                 if (priv->sh)
1575                         mlx5_os_free_shared_dr(priv);
1576                 if (priv->nl_socket_route >= 0)
1577                         close(priv->nl_socket_route);
1578                 if (priv->nl_socket_rdma >= 0)
1579                         close(priv->nl_socket_rdma);
1580                 if (priv->vmwa_context)
1581                         mlx5_vlan_vmwa_exit(priv->vmwa_context);
1582                 if (eth_dev && priv->drop_queue.hrxq)
1583                         mlx5_drop_action_destroy(eth_dev);
1584                 if (own_domain_id)
1585                         claim_zero(rte_eth_switch_domain_free(priv->domain_id));
1586                 mlx5_cache_list_destroy(&priv->hrxqs);
1587                 mlx5_free(priv);
1588                 if (eth_dev != NULL)
1589                         eth_dev->data->dev_private = NULL;
1590         }
1591         if (eth_dev != NULL) {
1592                 /* mac_addrs must not be freed alone because part of
1593                  * dev_private
1594                  **/
1595                 eth_dev->data->mac_addrs = NULL;
1596                 rte_eth_dev_release_port(eth_dev);
1597         }
1598         if (sh)
1599                 mlx5_free_shared_dev_ctx(sh);
1600         MLX5_ASSERT(err > 0);
1601         rte_errno = err;
1602         return NULL;
1603 }
1604
1605 /**
1606  * Comparison callback to sort device data.
1607  *
1608  * This is meant to be used with qsort().
1609  *
1610  * @param a[in]
1611  *   Pointer to pointer to first data object.
1612  * @param b[in]
1613  *   Pointer to pointer to second data object.
1614  *
1615  * @return
1616  *   0 if both objects are equal, less than 0 if the first argument is less
1617  *   than the second, greater than 0 otherwise.
1618  */
1619 static int
1620 mlx5_dev_spawn_data_cmp(const void *a, const void *b)
1621 {
1622         const struct mlx5_switch_info *si_a =
1623                 &((const struct mlx5_dev_spawn_data *)a)->info;
1624         const struct mlx5_switch_info *si_b =
1625                 &((const struct mlx5_dev_spawn_data *)b)->info;
1626         int ret;
1627
1628         /* Master device first. */
1629         ret = si_b->master - si_a->master;
1630         if (ret)
1631                 return ret;
1632         /* Then representor devices. */
1633         ret = si_b->representor - si_a->representor;
1634         if (ret)
1635                 return ret;
1636         /* Unidentified devices come last in no specific order. */
1637         if (!si_a->representor)
1638                 return 0;
1639         /* Order representors by name. */
1640         return si_a->port_name - si_b->port_name;
1641 }
1642
1643 /**
1644  * Match PCI information for possible slaves of bonding device.
1645  *
1646  * @param[in] ibv_dev
1647  *   Pointer to Infiniband device structure.
1648  * @param[in] pci_dev
1649  *   Pointer to PCI device structure to match PCI address.
1650  * @param[in] nl_rdma
1651  *   Netlink RDMA group socket handle.
1652  *
1653  * @return
1654  *   negative value if no bonding device found, otherwise
1655  *   positive index of slave PF in bonding.
1656  */
1657 static int
1658 mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev,
1659                            const struct rte_pci_device *pci_dev,
1660                            int nl_rdma)
1661 {
1662         char ifname[IF_NAMESIZE + 1];
1663         unsigned int ifindex;
1664         unsigned int np, i;
1665         FILE *file = NULL;
1666         int pf = -1;
1667
1668         /*
1669          * Try to get master device name. If something goes
1670          * wrong suppose the lack of kernel support and no
1671          * bonding devices.
1672          */
1673         if (nl_rdma < 0)
1674                 return -1;
1675         if (!strstr(ibv_dev->name, "bond"))
1676                 return -1;
1677         np = mlx5_nl_portnum(nl_rdma, ibv_dev->name);
1678         if (!np)
1679                 return -1;
1680         /*
1681          * The Master device might not be on the predefined
1682          * port (not on port index 1, it is not garanted),
1683          * we have to scan all Infiniband device port and
1684          * find master.
1685          */
1686         for (i = 1; i <= np; ++i) {
1687                 /* Check whether Infiniband port is populated. */
1688                 ifindex = mlx5_nl_ifindex(nl_rdma, ibv_dev->name, i);
1689                 if (!ifindex)
1690                         continue;
1691                 if (!if_indextoname(ifindex, ifname))
1692                         continue;
1693                 /* Try to read bonding slave names from sysfs. */
1694                 MKSTR(slaves,
1695                       "/sys/class/net/%s/master/bonding/slaves", ifname);
1696                 file = fopen(slaves, "r");
1697                 if (file)
1698                         break;
1699         }
1700         if (!file)
1701                 return -1;
1702         /* Use safe format to check maximal buffer length. */
1703         MLX5_ASSERT(atol(RTE_STR(IF_NAMESIZE)) == IF_NAMESIZE);
1704         while (fscanf(file, "%" RTE_STR(IF_NAMESIZE) "s", ifname) == 1) {
1705                 char tmp_str[IF_NAMESIZE + 32];
1706                 struct rte_pci_addr pci_addr;
1707                 struct mlx5_switch_info info;
1708
1709                 /* Process slave interface names in the loop. */
1710                 snprintf(tmp_str, sizeof(tmp_str),
1711                          "/sys/class/net/%s", ifname);
1712                 if (mlx5_dev_to_pci_addr(tmp_str, &pci_addr)) {
1713                         DRV_LOG(WARNING, "can not get PCI address"
1714                                          " for netdev \"%s\"", ifname);
1715                         continue;
1716                 }
1717                 if (pci_dev->addr.domain != pci_addr.domain ||
1718                     pci_dev->addr.bus != pci_addr.bus ||
1719                     pci_dev->addr.devid != pci_addr.devid ||
1720                     pci_dev->addr.function != pci_addr.function)
1721                         continue;
1722                 /* Slave interface PCI address match found. */
1723                 fclose(file);
1724                 snprintf(tmp_str, sizeof(tmp_str),
1725                          "/sys/class/net/%s/phys_port_name", ifname);
1726                 file = fopen(tmp_str, "rb");
1727                 if (!file)
1728                         break;
1729                 info.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET;
1730                 if (fscanf(file, "%32s", tmp_str) == 1)
1731                         mlx5_translate_port_name(tmp_str, &info);
1732                 if (info.name_type == MLX5_PHYS_PORT_NAME_TYPE_LEGACY ||
1733                     info.name_type == MLX5_PHYS_PORT_NAME_TYPE_UPLINK)
1734                         pf = info.port_name;
1735                 break;
1736         }
1737         if (file)
1738                 fclose(file);
1739         return pf;
1740 }
1741
1742 /**
1743  * DPDK callback to register a PCI device.
1744  *
1745  * This function spawns Ethernet devices out of a given PCI device.
1746  *
1747  * @param[in] pci_drv
1748  *   PCI driver structure (mlx5_driver).
1749  * @param[in] pci_dev
1750  *   PCI device information.
1751  *
1752  * @return
1753  *   0 on success, a negative errno value otherwise and rte_errno is set.
1754  */
1755 int
1756 mlx5_os_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1757                   struct rte_pci_device *pci_dev)
1758 {
1759         struct ibv_device **ibv_list;
1760         /*
1761          * Number of found IB Devices matching with requested PCI BDF.
1762          * nd != 1 means there are multiple IB devices over the same
1763          * PCI device and we have representors and master.
1764          */
1765         unsigned int nd = 0;
1766         /*
1767          * Number of found IB device Ports. nd = 1 and np = 1..n means
1768          * we have the single multiport IB device, and there may be
1769          * representors attached to some of found ports.
1770          */
1771         unsigned int np = 0;
1772         /*
1773          * Number of DPDK ethernet devices to Spawn - either over
1774          * multiple IB devices or multiple ports of single IB device.
1775          * Actually this is the number of iterations to spawn.
1776          */
1777         unsigned int ns = 0;
1778         /*
1779          * Bonding device
1780          *   < 0 - no bonding device (single one)
1781          *  >= 0 - bonding device (value is slave PF index)
1782          */
1783         int bd = -1;
1784         struct mlx5_dev_spawn_data *list = NULL;
1785         struct mlx5_dev_config dev_config;
1786         unsigned int dev_config_vf;
1787         int ret;
1788
1789         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1790                 mlx5_pmd_socket_init();
1791         ret = mlx5_init_once();
1792         if (ret) {
1793                 DRV_LOG(ERR, "unable to init PMD global data: %s",
1794                         strerror(rte_errno));
1795                 return -rte_errno;
1796         }
1797         errno = 0;
1798         ibv_list = mlx5_glue->get_device_list(&ret);
1799         if (!ibv_list) {
1800                 rte_errno = errno ? errno : ENOSYS;
1801                 DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?");
1802                 return -rte_errno;
1803         }
1804         /*
1805          * First scan the list of all Infiniband devices to find
1806          * matching ones, gathering into the list.
1807          */
1808         struct ibv_device *ibv_match[ret + 1];
1809         int nl_route = mlx5_nl_init(NETLINK_ROUTE);
1810         int nl_rdma = mlx5_nl_init(NETLINK_RDMA);
1811         unsigned int i;
1812
1813         while (ret-- > 0) {
1814                 struct rte_pci_addr pci_addr;
1815
1816                 DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name);
1817                 bd = mlx5_device_bond_pci_match
1818                                 (ibv_list[ret], pci_dev, nl_rdma);
1819                 if (bd >= 0) {
1820                         /*
1821                          * Bonding device detected. Only one match is allowed,
1822                          * the bonding is supported over multi-port IB device,
1823                          * there should be no matches on representor PCI
1824                          * functions or non VF LAG bonding devices with
1825                          * specified address.
1826                          */
1827                         if (nd) {
1828                                 DRV_LOG(ERR,
1829                                         "multiple PCI match on bonding device"
1830                                         "\"%s\" found", ibv_list[ret]->name);
1831                                 rte_errno = ENOENT;
1832                                 ret = -rte_errno;
1833                                 goto exit;
1834                         }
1835                         DRV_LOG(INFO, "PCI information matches for"
1836                                       " slave %d bonding device \"%s\"",
1837                                       bd, ibv_list[ret]->name);
1838                         ibv_match[nd++] = ibv_list[ret];
1839                         break;
1840                 }
1841                 if (mlx5_dev_to_pci_addr
1842                         (ibv_list[ret]->ibdev_path, &pci_addr))
1843                         continue;
1844                 if (pci_dev->addr.domain != pci_addr.domain ||
1845                     pci_dev->addr.bus != pci_addr.bus ||
1846                     pci_dev->addr.devid != pci_addr.devid ||
1847                     pci_dev->addr.function != pci_addr.function)
1848                         continue;
1849                 DRV_LOG(INFO, "PCI information matches for device \"%s\"",
1850                         ibv_list[ret]->name);
1851                 ibv_match[nd++] = ibv_list[ret];
1852         }
1853         ibv_match[nd] = NULL;
1854         if (!nd) {
1855                 /* No device matches, just complain and bail out. */
1856                 DRV_LOG(WARNING,
1857                         "no Verbs device matches PCI device " PCI_PRI_FMT ","
1858                         " are kernel drivers loaded?",
1859                         pci_dev->addr.domain, pci_dev->addr.bus,
1860                         pci_dev->addr.devid, pci_dev->addr.function);
1861                 rte_errno = ENOENT;
1862                 ret = -rte_errno;
1863                 goto exit;
1864         }
1865         if (nd == 1) {
1866                 /*
1867                  * Found single matching device may have multiple ports.
1868                  * Each port may be representor, we have to check the port
1869                  * number and check the representors existence.
1870                  */
1871                 if (nl_rdma >= 0)
1872                         np = mlx5_nl_portnum(nl_rdma, ibv_match[0]->name);
1873                 if (!np)
1874                         DRV_LOG(WARNING, "can not get IB device \"%s\""
1875                                          " ports number", ibv_match[0]->name);
1876                 if (bd >= 0 && !np) {
1877                         DRV_LOG(ERR, "can not get ports"
1878                                      " for bonding device");
1879                         rte_errno = ENOENT;
1880                         ret = -rte_errno;
1881                         goto exit;
1882                 }
1883         }
1884 #ifndef HAVE_MLX5DV_DR_DEVX_PORT
1885         if (bd >= 0) {
1886                 /*
1887                  * This may happen if there is VF LAG kernel support and
1888                  * application is compiled with older rdma_core library.
1889                  */
1890                 DRV_LOG(ERR,
1891                         "No kernel/verbs support for VF LAG bonding found.");
1892                 rte_errno = ENOTSUP;
1893                 ret = -rte_errno;
1894                 goto exit;
1895         }
1896 #endif
1897         /*
1898          * Now we can determine the maximal
1899          * amount of devices to be spawned.
1900          */
1901         list = mlx5_malloc(MLX5_MEM_ZERO,
1902                            sizeof(struct mlx5_dev_spawn_data) *
1903                            (np ? np : nd),
1904                            RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
1905         if (!list) {
1906                 DRV_LOG(ERR, "spawn data array allocation failure");
1907                 rte_errno = ENOMEM;
1908                 ret = -rte_errno;
1909                 goto exit;
1910         }
1911         if (bd >= 0 || np > 1) {
1912                 /*
1913                  * Single IB device with multiple ports found,
1914                  * it may be E-Switch master device and representors.
1915                  * We have to perform identification through the ports.
1916                  */
1917                 MLX5_ASSERT(nl_rdma >= 0);
1918                 MLX5_ASSERT(ns == 0);
1919                 MLX5_ASSERT(nd == 1);
1920                 MLX5_ASSERT(np);
1921                 for (i = 1; i <= np; ++i) {
1922                         list[ns].max_port = np;
1923                         list[ns].phys_port = i;
1924                         list[ns].phys_dev = ibv_match[0];
1925                         list[ns].eth_dev = NULL;
1926                         list[ns].pci_dev = pci_dev;
1927                         list[ns].pf_bond = bd;
1928                         list[ns].ifindex = mlx5_nl_ifindex
1929                                 (nl_rdma,
1930                                 mlx5_os_get_dev_device_name
1931                                                 (list[ns].phys_dev), i);
1932                         if (!list[ns].ifindex) {
1933                                 /*
1934                                  * No network interface index found for the
1935                                  * specified port, it means there is no
1936                                  * representor on this port. It's OK,
1937                                  * there can be disabled ports, for example
1938                                  * if sriov_numvfs < sriov_totalvfs.
1939                                  */
1940                                 continue;
1941                         }
1942                         ret = -1;
1943                         if (nl_route >= 0)
1944                                 ret = mlx5_nl_switch_info
1945                                                (nl_route,
1946                                                 list[ns].ifindex,
1947                                                 &list[ns].info);
1948                         if (ret || (!list[ns].info.representor &&
1949                                     !list[ns].info.master)) {
1950                                 /*
1951                                  * We failed to recognize representors with
1952                                  * Netlink, let's try to perform the task
1953                                  * with sysfs.
1954                                  */
1955                                 ret =  mlx5_sysfs_switch_info
1956                                                 (list[ns].ifindex,
1957                                                  &list[ns].info);
1958                         }
1959 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
1960                         if (!ret && bd >= 0) {
1961                                 switch (list[ns].info.name_type) {
1962                                 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1963                                         if (list[ns].info.port_name == bd)
1964                                                 ns++;
1965                                         break;
1966                                 case MLX5_PHYS_PORT_NAME_TYPE_PFHPF:
1967                                         /* Fallthrough */
1968                                 case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1969                                         if (list[ns].info.pf_num == bd)
1970                                                 ns++;
1971                                         break;
1972                                 default:
1973                                         break;
1974                                 }
1975                                 continue;
1976                         }
1977 #endif
1978                         if (!ret && (list[ns].info.representor ^
1979                                      list[ns].info.master))
1980                                 ns++;
1981                 }
1982                 if (!ns) {
1983                         DRV_LOG(ERR,
1984                                 "unable to recognize master/representors"
1985                                 " on the IB device with multiple ports");
1986                         rte_errno = ENOENT;
1987                         ret = -rte_errno;
1988                         goto exit;
1989                 }
1990         } else {
1991                 /*
1992                  * The existence of several matching entries (nd > 1) means
1993                  * port representors have been instantiated. No existing Verbs
1994                  * call nor sysfs entries can tell them apart, this can only
1995                  * be done through Netlink calls assuming kernel drivers are
1996                  * recent enough to support them.
1997                  *
1998                  * In the event of identification failure through Netlink,
1999                  * try again through sysfs, then:
2000                  *
2001                  * 1. A single IB device matches (nd == 1) with single
2002                  *    port (np=0/1) and is not a representor, assume
2003                  *    no switch support.
2004                  *
2005                  * 2. Otherwise no safe assumptions can be made;
2006                  *    complain louder and bail out.
2007                  */
2008                 for (i = 0; i != nd; ++i) {
2009                         memset(&list[ns].info, 0, sizeof(list[ns].info));
2010                         list[ns].max_port = 1;
2011                         list[ns].phys_port = 1;
2012                         list[ns].phys_dev = ibv_match[i];
2013                         list[ns].eth_dev = NULL;
2014                         list[ns].pci_dev = pci_dev;
2015                         list[ns].pf_bond = -1;
2016                         list[ns].ifindex = 0;
2017                         if (nl_rdma >= 0)
2018                                 list[ns].ifindex = mlx5_nl_ifindex
2019                                 (nl_rdma,
2020                                 mlx5_os_get_dev_device_name
2021                                                 (list[ns].phys_dev), 1);
2022                         if (!list[ns].ifindex) {
2023                                 char ifname[IF_NAMESIZE];
2024
2025                                 /*
2026                                  * Netlink failed, it may happen with old
2027                                  * ib_core kernel driver (before 4.16).
2028                                  * We can assume there is old driver because
2029                                  * here we are processing single ports IB
2030                                  * devices. Let's try sysfs to retrieve
2031                                  * the ifindex. The method works for
2032                                  * master device only.
2033                                  */
2034                                 if (nd > 1) {
2035                                         /*
2036                                          * Multiple devices found, assume
2037                                          * representors, can not distinguish
2038                                          * master/representor and retrieve
2039                                          * ifindex via sysfs.
2040                                          */
2041                                         continue;
2042                                 }
2043                                 ret = mlx5_get_ifname_sysfs
2044                                         (ibv_match[i]->ibdev_path, ifname);
2045                                 if (!ret)
2046                                         list[ns].ifindex =
2047                                                 if_nametoindex(ifname);
2048                                 if (!list[ns].ifindex) {
2049                                         /*
2050                                          * No network interface index found
2051                                          * for the specified device, it means
2052                                          * there it is neither representor
2053                                          * nor master.
2054                                          */
2055                                         continue;
2056                                 }
2057                         }
2058                         ret = -1;
2059                         if (nl_route >= 0)
2060                                 ret = mlx5_nl_switch_info
2061                                                (nl_route,
2062                                                 list[ns].ifindex,
2063                                                 &list[ns].info);
2064                         if (ret || (!list[ns].info.representor &&
2065                                     !list[ns].info.master)) {
2066                                 /*
2067                                  * We failed to recognize representors with
2068                                  * Netlink, let's try to perform the task
2069                                  * with sysfs.
2070                                  */
2071                                 ret =  mlx5_sysfs_switch_info
2072                                                 (list[ns].ifindex,
2073                                                  &list[ns].info);
2074                         }
2075                         if (!ret && (list[ns].info.representor ^
2076                                      list[ns].info.master)) {
2077                                 ns++;
2078                         } else if ((nd == 1) &&
2079                                    !list[ns].info.representor &&
2080                                    !list[ns].info.master) {
2081                                 /*
2082                                  * Single IB device with
2083                                  * one physical port and
2084                                  * attached network device.
2085                                  * May be SRIOV is not enabled
2086                                  * or there is no representors.
2087                                  */
2088                                 DRV_LOG(INFO, "no E-Switch support detected");
2089                                 ns++;
2090                                 break;
2091                         }
2092                 }
2093                 if (!ns) {
2094                         DRV_LOG(ERR,
2095                                 "unable to recognize master/representors"
2096                                 " on the multiple IB devices");
2097                         rte_errno = ENOENT;
2098                         ret = -rte_errno;
2099                         goto exit;
2100                 }
2101         }
2102         MLX5_ASSERT(ns);
2103         /*
2104          * Sort list to probe devices in natural order for users convenience
2105          * (i.e. master first, then representors from lowest to highest ID).
2106          */
2107         qsort(list, ns, sizeof(*list), mlx5_dev_spawn_data_cmp);
2108         /* Device specific configuration. */
2109         switch (pci_dev->id.device_id) {
2110         case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF:
2111         case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF:
2112         case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF:
2113         case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF:
2114         case PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF:
2115         case PCI_DEVICE_ID_MELLANOX_CONNECTX6VF:
2116         case PCI_DEVICE_ID_MELLANOX_CONNECTXVF:
2117                 dev_config_vf = 1;
2118                 break;
2119         default:
2120                 dev_config_vf = 0;
2121                 break;
2122         }
2123         for (i = 0; i != ns; ++i) {
2124                 uint32_t restore;
2125
2126                 /* Default configuration. */
2127                 memset(&dev_config, 0, sizeof(struct mlx5_dev_config));
2128                 dev_config.vf = dev_config_vf;
2129                 dev_config.mps = MLX5_ARG_UNSET;
2130                 dev_config.dbnc = MLX5_ARG_UNSET;
2131                 dev_config.rx_vec_en = 1;
2132                 dev_config.txq_inline_max = MLX5_ARG_UNSET;
2133                 dev_config.txq_inline_min = MLX5_ARG_UNSET;
2134                 dev_config.txq_inline_mpw = MLX5_ARG_UNSET;
2135                 dev_config.txqs_inline = MLX5_ARG_UNSET;
2136                 dev_config.vf_nl_en = 1;
2137                 dev_config.mr_ext_memseg_en = 1;
2138                 dev_config.mprq.max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN;
2139                 dev_config.mprq.min_rxqs_num = MLX5_MPRQ_MIN_RXQS;
2140                 dev_config.dv_esw_en = 1;
2141                 dev_config.dv_flow_en = 1;
2142                 dev_config.decap_en = 1;
2143                 dev_config.log_hp_size = MLX5_ARG_UNSET;
2144                 list[i].eth_dev = mlx5_dev_spawn(&pci_dev->device,
2145                                                  &list[i],
2146                                                  &dev_config);
2147                 if (!list[i].eth_dev) {
2148                         if (rte_errno != EBUSY && rte_errno != EEXIST)
2149                                 break;
2150                         /* Device is disabled or already spawned. Ignore it. */
2151                         continue;
2152                 }
2153                 restore = list[i].eth_dev->data->dev_flags;
2154                 rte_eth_copy_pci_info(list[i].eth_dev, pci_dev);
2155                 /* Restore non-PCI flags cleared by the above call. */
2156                 list[i].eth_dev->data->dev_flags |= restore;
2157                 rte_eth_dev_probing_finish(list[i].eth_dev);
2158         }
2159         if (i != ns) {
2160                 DRV_LOG(ERR,
2161                         "probe of PCI device " PCI_PRI_FMT " aborted after"
2162                         " encountering an error: %s",
2163                         pci_dev->addr.domain, pci_dev->addr.bus,
2164                         pci_dev->addr.devid, pci_dev->addr.function,
2165                         strerror(rte_errno));
2166                 ret = -rte_errno;
2167                 /* Roll back. */
2168                 while (i--) {
2169                         if (!list[i].eth_dev)
2170                                 continue;
2171                         mlx5_dev_close(list[i].eth_dev);
2172                         /* mac_addrs must not be freed because in dev_private */
2173                         list[i].eth_dev->data->mac_addrs = NULL;
2174                         claim_zero(rte_eth_dev_release_port(list[i].eth_dev));
2175                 }
2176                 /* Restore original error. */
2177                 rte_errno = -ret;
2178         } else {
2179                 ret = 0;
2180         }
2181 exit:
2182         /*
2183          * Do the routine cleanup:
2184          * - close opened Netlink sockets
2185          * - free allocated spawn data array
2186          * - free the Infiniband device list
2187          */
2188         if (nl_rdma >= 0)
2189                 close(nl_rdma);
2190         if (nl_route >= 0)
2191                 close(nl_route);
2192         if (list)
2193                 mlx5_free(list);
2194         MLX5_ASSERT(ibv_list);
2195         mlx5_glue->free_device_list(ibv_list);
2196         return ret;
2197 }
2198
2199 static int
2200 mlx5_config_doorbell_mapping_env(const struct mlx5_dev_config *config)
2201 {
2202         char *env;
2203         int value;
2204
2205         MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
2206         /* Get environment variable to store. */
2207         env = getenv(MLX5_SHUT_UP_BF);
2208         value = env ? !!strcmp(env, "0") : MLX5_ARG_UNSET;
2209         if (config->dbnc == MLX5_ARG_UNSET)
2210                 setenv(MLX5_SHUT_UP_BF, MLX5_SHUT_UP_BF_DEFAULT, 1);
2211         else
2212                 setenv(MLX5_SHUT_UP_BF,
2213                        config->dbnc == MLX5_TXDB_NCACHED ? "1" : "0", 1);
2214         return value;
2215 }
2216
2217 static void
2218 mlx5_restore_doorbell_mapping_env(int value)
2219 {
2220         MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
2221         /* Restore the original environment variable state. */
2222         if (value == MLX5_ARG_UNSET)
2223                 unsetenv(MLX5_SHUT_UP_BF);
2224         else
2225                 setenv(MLX5_SHUT_UP_BF, value ? "1" : "0", 1);
2226 }
2227
2228 /**
2229  * Extract pdn of PD object using DV API.
2230  *
2231  * @param[in] pd
2232  *   Pointer to the verbs PD object.
2233  * @param[out] pdn
2234  *   Pointer to the PD object number variable.
2235  *
2236  * @return
2237  *   0 on success, error value otherwise.
2238  */
2239 int
2240 mlx5_os_get_pdn(void *pd, uint32_t *pdn)
2241 {
2242 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
2243         struct mlx5dv_obj obj;
2244         struct mlx5dv_pd pd_info;
2245         int ret = 0;
2246
2247         obj.pd.in = pd;
2248         obj.pd.out = &pd_info;
2249         ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_PD);
2250         if (ret) {
2251                 DRV_LOG(DEBUG, "Fail to get PD object info");
2252                 return ret;
2253         }
2254         *pdn = pd_info.pdn;
2255         return 0;
2256 #else
2257         (void)pd;
2258         (void)pdn;
2259         return -ENOTSUP;
2260 #endif /* HAVE_IBV_FLOW_DV_SUPPORT */
2261 }
2262
2263 /**
2264  * Function API to open IB device.
2265  *
2266  * This function calls the Linux glue APIs to open a device.
2267  *
2268  * @param[in] spawn
2269  *   Pointer to the IB device attributes (name, port, etc).
2270  * @param[out] config
2271  *   Pointer to device configuration structure.
2272  * @param[out] sh
2273  *   Pointer to shared context structure.
2274  *
2275  * @return
2276  *   0 on success, a positive error value otherwise.
2277  */
2278 int
2279 mlx5_os_open_device(const struct mlx5_dev_spawn_data *spawn,
2280                      const struct mlx5_dev_config *config,
2281                      struct mlx5_dev_ctx_shared *sh)
2282 {
2283         int dbmap_env;
2284         int err = 0;
2285
2286         sh->numa_node = spawn->pci_dev->device.numa_node;
2287         pthread_mutex_init(&sh->txpp.mutex, NULL);
2288         /*
2289          * Configure environment variable "MLX5_BF_SHUT_UP"
2290          * before the device creation. The rdma_core library
2291          * checks the variable at device creation and
2292          * stores the result internally.
2293          */
2294         dbmap_env = mlx5_config_doorbell_mapping_env(config);
2295         /* Try to open IB device with DV first, then usual Verbs. */
2296         errno = 0;
2297         sh->ctx = mlx5_glue->dv_open_device(spawn->phys_dev);
2298         if (sh->ctx) {
2299                 sh->devx = 1;
2300                 DRV_LOG(DEBUG, "DevX is supported");
2301                 /* The device is created, no need for environment. */
2302                 mlx5_restore_doorbell_mapping_env(dbmap_env);
2303         } else {
2304                 /* The environment variable is still configured. */
2305                 sh->ctx = mlx5_glue->open_device(spawn->phys_dev);
2306                 err = errno ? errno : ENODEV;
2307                 /*
2308                  * The environment variable is not needed anymore,
2309                  * all device creation attempts are completed.
2310                  */
2311                 mlx5_restore_doorbell_mapping_env(dbmap_env);
2312                 if (!sh->ctx)
2313                         return err;
2314                 DRV_LOG(DEBUG, "DevX is NOT supported");
2315                 err = 0;
2316         }
2317         return err;
2318 }
2319
2320 /**
2321  * Install shared asynchronous device events handler.
2322  * This function is implemented to support event sharing
2323  * between multiple ports of single IB device.
2324  *
2325  * @param sh
2326  *   Pointer to mlx5_dev_ctx_shared object.
2327  */
2328 void
2329 mlx5_os_dev_shared_handler_install(struct mlx5_dev_ctx_shared *sh)
2330 {
2331         int ret;
2332         int flags;
2333
2334         sh->intr_handle.fd = -1;
2335         flags = fcntl(((struct ibv_context *)sh->ctx)->async_fd, F_GETFL);
2336         ret = fcntl(((struct ibv_context *)sh->ctx)->async_fd,
2337                     F_SETFL, flags | O_NONBLOCK);
2338         if (ret) {
2339                 DRV_LOG(INFO, "failed to change file descriptor async event"
2340                         " queue");
2341         } else {
2342                 sh->intr_handle.fd = ((struct ibv_context *)sh->ctx)->async_fd;
2343                 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
2344                 if (rte_intr_callback_register(&sh->intr_handle,
2345                                         mlx5_dev_interrupt_handler, sh)) {
2346                         DRV_LOG(INFO, "Fail to install the shared interrupt.");
2347                         sh->intr_handle.fd = -1;
2348                 }
2349         }
2350         if (sh->devx) {
2351 #ifdef HAVE_IBV_DEVX_ASYNC
2352                 sh->intr_handle_devx.fd = -1;
2353                 sh->devx_comp =
2354                         (void *)mlx5_glue->devx_create_cmd_comp(sh->ctx);
2355                 struct mlx5dv_devx_cmd_comp *devx_comp = sh->devx_comp;
2356                 if (!devx_comp) {
2357                         DRV_LOG(INFO, "failed to allocate devx_comp.");
2358                         return;
2359                 }
2360                 flags = fcntl(devx_comp->fd, F_GETFL);
2361                 ret = fcntl(devx_comp->fd, F_SETFL, flags | O_NONBLOCK);
2362                 if (ret) {
2363                         DRV_LOG(INFO, "failed to change file descriptor"
2364                                 " devx comp");
2365                         return;
2366                 }
2367                 sh->intr_handle_devx.fd = devx_comp->fd;
2368                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
2369                 if (rte_intr_callback_register(&sh->intr_handle_devx,
2370                                         mlx5_dev_interrupt_handler_devx, sh)) {
2371                         DRV_LOG(INFO, "Fail to install the devx shared"
2372                                 " interrupt.");
2373                         sh->intr_handle_devx.fd = -1;
2374                 }
2375 #endif /* HAVE_IBV_DEVX_ASYNC */
2376         }
2377 }
2378
2379 /**
2380  * Uninstall shared asynchronous device events handler.
2381  * This function is implemented to support event sharing
2382  * between multiple ports of single IB device.
2383  *
2384  * @param dev
2385  *   Pointer to mlx5_dev_ctx_shared object.
2386  */
2387 void
2388 mlx5_os_dev_shared_handler_uninstall(struct mlx5_dev_ctx_shared *sh)
2389 {
2390         if (sh->intr_handle.fd >= 0)
2391                 mlx5_intr_callback_unregister(&sh->intr_handle,
2392                                               mlx5_dev_interrupt_handler, sh);
2393 #ifdef HAVE_IBV_DEVX_ASYNC
2394         if (sh->intr_handle_devx.fd >= 0)
2395                 rte_intr_callback_unregister(&sh->intr_handle_devx,
2396                                   mlx5_dev_interrupt_handler_devx, sh);
2397         if (sh->devx_comp)
2398                 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
2399 #endif
2400 }
2401
2402 /**
2403  * Read statistics by a named counter.
2404  *
2405  * @param[in] priv
2406  *   Pointer to the private device data structure.
2407  * @param[in] ctr_name
2408  *   Pointer to the name of the statistic counter to read
2409  * @param[out] stat
2410  *   Pointer to read statistic value.
2411  * @return
2412  *   0 on success and stat is valud, 1 if failed to read the value
2413  *   rte_errno is set.
2414  *
2415  */
2416 int
2417 mlx5_os_read_dev_stat(struct mlx5_priv *priv, const char *ctr_name,
2418                       uint64_t *stat)
2419 {
2420         int fd;
2421
2422         if (priv->sh) {
2423                 MKSTR(path, "%s/ports/%d/hw_counters/%s",
2424                       priv->sh->ibdev_path,
2425                       priv->dev_port,
2426                       ctr_name);
2427                 fd = open(path, O_RDONLY);
2428                 /*
2429                  * in switchdev the file location is not per port
2430                  * but rather in <ibdev_path>/hw_counters/<file_name>.
2431                  */
2432                 if (fd == -1) {
2433                         MKSTR(path1, "%s/hw_counters/%s",
2434                               priv->sh->ibdev_path,
2435                               ctr_name);
2436                         fd = open(path1, O_RDONLY);
2437                 }
2438                 if (fd != -1) {
2439                         char buf[21] = {'\0'};
2440                         ssize_t n = read(fd, buf, sizeof(buf));
2441
2442                         close(fd);
2443                         if (n != -1) {
2444                                 *stat = strtoull(buf, NULL, 10);
2445                                 return 0;
2446                         }
2447                 }
2448         }
2449         *stat = 0;
2450         return 1;
2451 }
2452
2453 /**
2454  * Set the reg_mr and dereg_mr call backs
2455  *
2456  * @param reg_mr_cb[out]
2457  *   Pointer to reg_mr func
2458  * @param dereg_mr_cb[out]
2459  *   Pointer to dereg_mr func
2460  *
2461  */
2462 void
2463 mlx5_os_set_reg_mr_cb(mlx5_reg_mr_t *reg_mr_cb,
2464                       mlx5_dereg_mr_t *dereg_mr_cb)
2465 {
2466         *reg_mr_cb = mlx5_verbs_ops.reg_mr;
2467         *dereg_mr_cb = mlx5_verbs_ops.dereg_mr;
2468 }
2469
2470 /**
2471  * Remove a MAC address from device
2472  *
2473  * @param dev
2474  *   Pointer to Ethernet device structure.
2475  * @param index
2476  *   MAC address index.
2477  */
2478 void
2479 mlx5_os_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
2480 {
2481         struct mlx5_priv *priv = dev->data->dev_private;
2482         const int vf = priv->config.vf;
2483
2484         if (vf)
2485                 mlx5_nl_mac_addr_remove(priv->nl_socket_route,
2486                                         mlx5_ifindex(dev), priv->mac_own,
2487                                         &dev->data->mac_addrs[index], index);
2488 }
2489
2490 /**
2491  * Adds a MAC address to the device
2492  *
2493  * @param dev
2494  *   Pointer to Ethernet device structure.
2495  * @param mac_addr
2496  *   MAC address to register.
2497  * @param index
2498  *   MAC address index.
2499  *
2500  * @return
2501  *   0 on success, a negative errno value otherwise
2502  */
2503 int
2504 mlx5_os_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac,
2505                      uint32_t index)
2506 {
2507         struct mlx5_priv *priv = dev->data->dev_private;
2508         const int vf = priv->config.vf;
2509         int ret = 0;
2510
2511         if (vf)
2512                 ret = mlx5_nl_mac_addr_add(priv->nl_socket_route,
2513                                            mlx5_ifindex(dev), priv->mac_own,
2514                                            mac, index);
2515         return ret;
2516 }
2517
2518 /**
2519  * Modify a VF MAC address
2520  *
2521  * @param priv
2522  *   Pointer to device private data.
2523  * @param mac_addr
2524  *   MAC address to modify into.
2525  * @param iface_idx
2526  *   Net device interface index
2527  * @param vf_index
2528  *   VF index
2529  *
2530  * @return
2531  *   0 on success, a negative errno value otherwise
2532  */
2533 int
2534 mlx5_os_vf_mac_addr_modify(struct mlx5_priv *priv,
2535                            unsigned int iface_idx,
2536                            struct rte_ether_addr *mac_addr,
2537                            int vf_index)
2538 {
2539         return mlx5_nl_vf_mac_addr_modify
2540                 (priv->nl_socket_route, iface_idx, mac_addr, vf_index);
2541 }
2542
2543 /**
2544  * Set device promiscuous mode
2545  *
2546  * @param dev
2547  *   Pointer to Ethernet device structure.
2548  * @param enable
2549  *   0 - promiscuous is disabled, otherwise - enabled
2550  *
2551  * @return
2552  *   0 on success, a negative error value otherwise
2553  */
2554 int
2555 mlx5_os_set_promisc(struct rte_eth_dev *dev, int enable)
2556 {
2557         struct mlx5_priv *priv = dev->data->dev_private;
2558
2559         return mlx5_nl_promisc(priv->nl_socket_route,
2560                                mlx5_ifindex(dev), !!enable);
2561 }
2562
2563 /**
2564  * Set device promiscuous mode
2565  *
2566  * @param dev
2567  *   Pointer to Ethernet device structure.
2568  * @param enable
2569  *   0 - all multicase is disabled, otherwise - enabled
2570  *
2571  * @return
2572  *   0 on success, a negative error value otherwise
2573  */
2574 int
2575 mlx5_os_set_allmulti(struct rte_eth_dev *dev, int enable)
2576 {
2577         struct mlx5_priv *priv = dev->data->dev_private;
2578
2579         return mlx5_nl_allmulti(priv->nl_socket_route,
2580                                 mlx5_ifindex(dev), !!enable);
2581 }
2582
2583 /**
2584  * Flush device MAC addresses
2585  *
2586  * @param dev
2587  *   Pointer to Ethernet device structure.
2588  *
2589  */
2590 void
2591 mlx5_os_mac_addr_flush(struct rte_eth_dev *dev)
2592 {
2593         struct mlx5_priv *priv = dev->data->dev_private;
2594
2595         mlx5_nl_mac_addr_flush(priv->nl_socket_route, mlx5_ifindex(dev),
2596                                dev->data->mac_addrs,
2597                                MLX5_MAX_MAC_ADDRESSES, priv->mac_own);
2598 }
2599
2600 const struct eth_dev_ops mlx5_os_dev_ops = {
2601         .dev_configure = mlx5_dev_configure,
2602         .dev_start = mlx5_dev_start,
2603         .dev_stop = mlx5_dev_stop,
2604         .dev_set_link_down = mlx5_set_link_down,
2605         .dev_set_link_up = mlx5_set_link_up,
2606         .dev_close = mlx5_dev_close,
2607         .promiscuous_enable = mlx5_promiscuous_enable,
2608         .promiscuous_disable = mlx5_promiscuous_disable,
2609         .allmulticast_enable = mlx5_allmulticast_enable,
2610         .allmulticast_disable = mlx5_allmulticast_disable,
2611         .link_update = mlx5_link_update,
2612         .stats_get = mlx5_stats_get,
2613         .stats_reset = mlx5_stats_reset,
2614         .xstats_get = mlx5_xstats_get,
2615         .xstats_reset = mlx5_xstats_reset,
2616         .xstats_get_names = mlx5_xstats_get_names,
2617         .fw_version_get = mlx5_fw_version_get,
2618         .dev_infos_get = mlx5_dev_infos_get,
2619         .read_clock = mlx5_txpp_read_clock,
2620         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
2621         .vlan_filter_set = mlx5_vlan_filter_set,
2622         .rx_queue_setup = mlx5_rx_queue_setup,
2623         .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup,
2624         .tx_queue_setup = mlx5_tx_queue_setup,
2625         .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup,
2626         .rx_queue_release = mlx5_rx_queue_release,
2627         .tx_queue_release = mlx5_tx_queue_release,
2628         .rx_queue_start = mlx5_rx_queue_start,
2629         .rx_queue_stop = mlx5_rx_queue_stop,
2630         .tx_queue_start = mlx5_tx_queue_start,
2631         .tx_queue_stop = mlx5_tx_queue_stop,
2632         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
2633         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
2634         .mac_addr_remove = mlx5_mac_addr_remove,
2635         .mac_addr_add = mlx5_mac_addr_add,
2636         .mac_addr_set = mlx5_mac_addr_set,
2637         .set_mc_addr_list = mlx5_set_mc_addr_list,
2638         .mtu_set = mlx5_dev_set_mtu,
2639         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
2640         .vlan_offload_set = mlx5_vlan_offload_set,
2641         .reta_update = mlx5_dev_rss_reta_update,
2642         .reta_query = mlx5_dev_rss_reta_query,
2643         .rss_hash_update = mlx5_rss_hash_update,
2644         .rss_hash_conf_get = mlx5_rss_hash_conf_get,
2645         .filter_ctrl = mlx5_dev_filter_ctrl,
2646         .rxq_info_get = mlx5_rxq_info_get,
2647         .txq_info_get = mlx5_txq_info_get,
2648         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2649         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2650         .rx_queue_intr_enable = mlx5_rx_intr_enable,
2651         .rx_queue_intr_disable = mlx5_rx_intr_disable,
2652         .is_removed = mlx5_is_removed,
2653         .udp_tunnel_port_add  = mlx5_udp_tunnel_port_add,
2654         .get_module_info = mlx5_get_module_info,
2655         .get_module_eeprom = mlx5_get_module_eeprom,
2656         .hairpin_cap_get = mlx5_hairpin_cap_get,
2657         .mtr_ops_get = mlx5_flow_meter_ops_get,
2658         .hairpin_bind = mlx5_hairpin_bind,
2659         .hairpin_unbind = mlx5_hairpin_unbind,
2660         .hairpin_get_peer_ports = mlx5_hairpin_get_peer_ports,
2661         .hairpin_queue_peer_update = mlx5_hairpin_queue_peer_update,
2662         .hairpin_queue_peer_bind = mlx5_hairpin_queue_peer_bind,
2663         .hairpin_queue_peer_unbind = mlx5_hairpin_queue_peer_unbind,
2664 };
2665
2666 /* Available operations from secondary process. */
2667 const struct eth_dev_ops mlx5_os_dev_sec_ops = {
2668         .stats_get = mlx5_stats_get,
2669         .stats_reset = mlx5_stats_reset,
2670         .xstats_get = mlx5_xstats_get,
2671         .xstats_reset = mlx5_xstats_reset,
2672         .xstats_get_names = mlx5_xstats_get_names,
2673         .fw_version_get = mlx5_fw_version_get,
2674         .dev_infos_get = mlx5_dev_infos_get,
2675         .read_clock = mlx5_txpp_read_clock,
2676         .rx_queue_start = mlx5_rx_queue_start,
2677         .rx_queue_stop = mlx5_rx_queue_stop,
2678         .tx_queue_start = mlx5_tx_queue_start,
2679         .tx_queue_stop = mlx5_tx_queue_stop,
2680         .rxq_info_get = mlx5_rxq_info_get,
2681         .txq_info_get = mlx5_txq_info_get,
2682         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2683         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2684         .get_module_info = mlx5_get_module_info,
2685         .get_module_eeprom = mlx5_get_module_eeprom,
2686 };
2687
2688 /* Available operations in flow isolated mode. */
2689 const struct eth_dev_ops mlx5_os_dev_ops_isolate = {
2690         .dev_configure = mlx5_dev_configure,
2691         .dev_start = mlx5_dev_start,
2692         .dev_stop = mlx5_dev_stop,
2693         .dev_set_link_down = mlx5_set_link_down,
2694         .dev_set_link_up = mlx5_set_link_up,
2695         .dev_close = mlx5_dev_close,
2696         .promiscuous_enable = mlx5_promiscuous_enable,
2697         .promiscuous_disable = mlx5_promiscuous_disable,
2698         .allmulticast_enable = mlx5_allmulticast_enable,
2699         .allmulticast_disable = mlx5_allmulticast_disable,
2700         .link_update = mlx5_link_update,
2701         .stats_get = mlx5_stats_get,
2702         .stats_reset = mlx5_stats_reset,
2703         .xstats_get = mlx5_xstats_get,
2704         .xstats_reset = mlx5_xstats_reset,
2705         .xstats_get_names = mlx5_xstats_get_names,
2706         .fw_version_get = mlx5_fw_version_get,
2707         .dev_infos_get = mlx5_dev_infos_get,
2708         .read_clock = mlx5_txpp_read_clock,
2709         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
2710         .vlan_filter_set = mlx5_vlan_filter_set,
2711         .rx_queue_setup = mlx5_rx_queue_setup,
2712         .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup,
2713         .tx_queue_setup = mlx5_tx_queue_setup,
2714         .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup,
2715         .rx_queue_release = mlx5_rx_queue_release,
2716         .tx_queue_release = mlx5_tx_queue_release,
2717         .rx_queue_start = mlx5_rx_queue_start,
2718         .rx_queue_stop = mlx5_rx_queue_stop,
2719         .tx_queue_start = mlx5_tx_queue_start,
2720         .tx_queue_stop = mlx5_tx_queue_stop,
2721         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
2722         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
2723         .mac_addr_remove = mlx5_mac_addr_remove,
2724         .mac_addr_add = mlx5_mac_addr_add,
2725         .mac_addr_set = mlx5_mac_addr_set,
2726         .set_mc_addr_list = mlx5_set_mc_addr_list,
2727         .mtu_set = mlx5_dev_set_mtu,
2728         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
2729         .vlan_offload_set = mlx5_vlan_offload_set,
2730         .filter_ctrl = mlx5_dev_filter_ctrl,
2731         .rxq_info_get = mlx5_rxq_info_get,
2732         .txq_info_get = mlx5_txq_info_get,
2733         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2734         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2735         .rx_queue_intr_enable = mlx5_rx_intr_enable,
2736         .rx_queue_intr_disable = mlx5_rx_intr_disable,
2737         .is_removed = mlx5_is_removed,
2738         .get_module_info = mlx5_get_module_info,
2739         .get_module_eeprom = mlx5_get_module_eeprom,
2740         .hairpin_cap_get = mlx5_hairpin_cap_get,
2741         .mtr_ops_get = mlx5_flow_meter_ops_get,
2742         .hairpin_bind = mlx5_hairpin_bind,
2743         .hairpin_unbind = mlx5_hairpin_unbind,
2744         .hairpin_get_peer_ports = mlx5_hairpin_get_peer_ports,
2745         .hairpin_queue_peer_update = mlx5_hairpin_queue_peer_update,
2746         .hairpin_queue_peer_bind = mlx5_hairpin_queue_peer_bind,
2747         .hairpin_queue_peer_unbind = mlx5_hairpin_queue_peer_unbind,
2748 };