mem: allow memseg lists to be marked as external
[dpdk.git] / drivers / net / mlx5 / mlx5.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2015 6WIND S.A.
3  * Copyright 2015 Mellanox Technologies, Ltd
4  */
5
6 #include <stddef.h>
7 #include <unistd.h>
8 #include <string.h>
9 #include <assert.h>
10 #include <dlfcn.h>
11 #include <stdint.h>
12 #include <stdlib.h>
13 #include <errno.h>
14 #include <net/if.h>
15 #include <sys/mman.h>
16 #include <linux/netlink.h>
17 #include <linux/rtnetlink.h>
18
19 /* Verbs header. */
20 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
21 #ifdef PEDANTIC
22 #pragma GCC diagnostic ignored "-Wpedantic"
23 #endif
24 #include <infiniband/verbs.h>
25 #ifdef PEDANTIC
26 #pragma GCC diagnostic error "-Wpedantic"
27 #endif
28
29 #include <rte_malloc.h>
30 #include <rte_ethdev_driver.h>
31 #include <rte_ethdev_pci.h>
32 #include <rte_pci.h>
33 #include <rte_bus_pci.h>
34 #include <rte_common.h>
35 #include <rte_config.h>
36 #include <rte_eal_memconfig.h>
37 #include <rte_kvargs.h>
38 #include <rte_rwlock.h>
39 #include <rte_spinlock.h>
40 #include <rte_string_fns.h>
41
42 #include "mlx5.h"
43 #include "mlx5_utils.h"
44 #include "mlx5_rxtx.h"
45 #include "mlx5_autoconf.h"
46 #include "mlx5_defs.h"
47 #include "mlx5_glue.h"
48 #include "mlx5_mr.h"
49
50 /* Device parameter to enable RX completion queue compression. */
51 #define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en"
52
53 /* Device parameter to enable Multi-Packet Rx queue. */
54 #define MLX5_RX_MPRQ_EN "mprq_en"
55
56 /* Device parameter to configure log 2 of the number of strides for MPRQ. */
57 #define MLX5_RX_MPRQ_LOG_STRIDE_NUM "mprq_log_stride_num"
58
59 /* Device parameter to limit the size of memcpy'd packet for MPRQ. */
60 #define MLX5_RX_MPRQ_MAX_MEMCPY_LEN "mprq_max_memcpy_len"
61
62 /* Device parameter to set the minimum number of Rx queues to enable MPRQ. */
63 #define MLX5_RXQS_MIN_MPRQ "rxqs_min_mprq"
64
65 /* Device parameter to configure inline send. */
66 #define MLX5_TXQ_INLINE "txq_inline"
67
68 /*
69  * Device parameter to configure the number of TX queues threshold for
70  * enabling inline send.
71  */
72 #define MLX5_TXQS_MIN_INLINE "txqs_min_inline"
73
74 /* Device parameter to enable multi-packet send WQEs. */
75 #define MLX5_TXQ_MPW_EN "txq_mpw_en"
76
77 /* Device parameter to include 2 dsegs in the title WQEBB. */
78 #define MLX5_TXQ_MPW_HDR_DSEG_EN "txq_mpw_hdr_dseg_en"
79
80 /* Device parameter to limit the size of inlining packet. */
81 #define MLX5_TXQ_MAX_INLINE_LEN "txq_max_inline_len"
82
83 /* Device parameter to enable hardware Tx vector. */
84 #define MLX5_TX_VEC_EN "tx_vec_en"
85
86 /* Device parameter to enable hardware Rx vector. */
87 #define MLX5_RX_VEC_EN "rx_vec_en"
88
89 /* Allow L3 VXLAN flow creation. */
90 #define MLX5_L3_VXLAN_EN "l3_vxlan_en"
91
92 /* Activate Netlink support in VF mode. */
93 #define MLX5_VF_NL_EN "vf_nl_en"
94
95 /* Select port representors to instantiate. */
96 #define MLX5_REPRESENTOR "representor"
97
98 #ifndef HAVE_IBV_MLX5_MOD_MPW
99 #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2)
100 #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3)
101 #endif
102
103 #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP
104 #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4)
105 #endif
106
107 static const char *MZ_MLX5_PMD_SHARED_DATA = "mlx5_pmd_shared_data";
108
109 /* Shared memory between primary and secondary processes. */
110 struct mlx5_shared_data *mlx5_shared_data;
111
112 /* Spinlock for mlx5_shared_data allocation. */
113 static rte_spinlock_t mlx5_shared_data_lock = RTE_SPINLOCK_INITIALIZER;
114
115 /** Driver-specific log messages type. */
116 int mlx5_logtype;
117
118 /**
119  * Prepare shared data between primary and secondary process.
120  */
121 static void
122 mlx5_prepare_shared_data(void)
123 {
124         const struct rte_memzone *mz;
125
126         rte_spinlock_lock(&mlx5_shared_data_lock);
127         if (mlx5_shared_data == NULL) {
128                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
129                         /* Allocate shared memory. */
130                         mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA,
131                                                  sizeof(*mlx5_shared_data),
132                                                  SOCKET_ID_ANY, 0);
133                 } else {
134                         /* Lookup allocated shared memory. */
135                         mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA);
136                 }
137                 if (mz == NULL)
138                         rte_panic("Cannot allocate mlx5 shared data\n");
139                 mlx5_shared_data = mz->addr;
140                 /* Initialize shared data. */
141                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
142                         LIST_INIT(&mlx5_shared_data->mem_event_cb_list);
143                         rte_rwlock_init(&mlx5_shared_data->mem_event_rwlock);
144                 }
145                 rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
146                                                 mlx5_mr_mem_event_cb, NULL);
147         }
148         rte_spinlock_unlock(&mlx5_shared_data_lock);
149 }
150
151 /**
152  * Retrieve integer value from environment variable.
153  *
154  * @param[in] name
155  *   Environment variable name.
156  *
157  * @return
158  *   Integer value, 0 if the variable is not set.
159  */
160 int
161 mlx5_getenv_int(const char *name)
162 {
163         const char *val = getenv(name);
164
165         if (val == NULL)
166                 return 0;
167         return atoi(val);
168 }
169
170 /**
171  * Verbs callback to allocate a memory. This function should allocate the space
172  * according to the size provided residing inside a huge page.
173  * Please note that all allocation must respect the alignment from libmlx5
174  * (i.e. currently sysconf(_SC_PAGESIZE)).
175  *
176  * @param[in] size
177  *   The size in bytes of the memory to allocate.
178  * @param[in] data
179  *   A pointer to the callback data.
180  *
181  * @return
182  *   Allocated buffer, NULL otherwise and rte_errno is set.
183  */
184 static void *
185 mlx5_alloc_verbs_buf(size_t size, void *data)
186 {
187         struct priv *priv = data;
188         void *ret;
189         size_t alignment = sysconf(_SC_PAGESIZE);
190         unsigned int socket = SOCKET_ID_ANY;
191
192         if (priv->verbs_alloc_ctx.type == MLX5_VERBS_ALLOC_TYPE_TX_QUEUE) {
193                 const struct mlx5_txq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
194
195                 socket = ctrl->socket;
196         } else if (priv->verbs_alloc_ctx.type ==
197                    MLX5_VERBS_ALLOC_TYPE_RX_QUEUE) {
198                 const struct mlx5_rxq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
199
200                 socket = ctrl->socket;
201         }
202         assert(data != NULL);
203         ret = rte_malloc_socket(__func__, size, alignment, socket);
204         if (!ret && size)
205                 rte_errno = ENOMEM;
206         return ret;
207 }
208
209 /**
210  * Verbs callback to free a memory.
211  *
212  * @param[in] ptr
213  *   A pointer to the memory to free.
214  * @param[in] data
215  *   A pointer to the callback data.
216  */
217 static void
218 mlx5_free_verbs_buf(void *ptr, void *data __rte_unused)
219 {
220         assert(data != NULL);
221         rte_free(ptr);
222 }
223
224 /**
225  * DPDK callback to close the device.
226  *
227  * Destroy all queues and objects, free memory.
228  *
229  * @param dev
230  *   Pointer to Ethernet device structure.
231  */
232 static void
233 mlx5_dev_close(struct rte_eth_dev *dev)
234 {
235         struct priv *priv = dev->data->dev_private;
236         unsigned int i;
237         int ret;
238
239         DRV_LOG(DEBUG, "port %u closing device \"%s\"",
240                 dev->data->port_id,
241                 ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
242         /* In case mlx5_dev_stop() has not been called. */
243         mlx5_dev_interrupt_handler_uninstall(dev);
244         mlx5_traffic_disable(dev);
245         mlx5_flow_flush(dev, NULL);
246         /* Prevent crashes when queues are still in use. */
247         dev->rx_pkt_burst = removed_rx_burst;
248         dev->tx_pkt_burst = removed_tx_burst;
249         if (priv->rxqs != NULL) {
250                 /* XXX race condition if mlx5_rx_burst() is still running. */
251                 usleep(1000);
252                 for (i = 0; (i != priv->rxqs_n); ++i)
253                         mlx5_rxq_release(dev, i);
254                 priv->rxqs_n = 0;
255                 priv->rxqs = NULL;
256         }
257         if (priv->txqs != NULL) {
258                 /* XXX race condition if mlx5_tx_burst() is still running. */
259                 usleep(1000);
260                 for (i = 0; (i != priv->txqs_n); ++i)
261                         mlx5_txq_release(dev, i);
262                 priv->txqs_n = 0;
263                 priv->txqs = NULL;
264         }
265         mlx5_mprq_free_mp(dev);
266         mlx5_mr_release(dev);
267         if (priv->pd != NULL) {
268                 assert(priv->ctx != NULL);
269                 claim_zero(mlx5_glue->dealloc_pd(priv->pd));
270                 claim_zero(mlx5_glue->close_device(priv->ctx));
271         } else
272                 assert(priv->ctx == NULL);
273         if (priv->rss_conf.rss_key != NULL)
274                 rte_free(priv->rss_conf.rss_key);
275         if (priv->reta_idx != NULL)
276                 rte_free(priv->reta_idx);
277         if (priv->primary_socket)
278                 mlx5_socket_uninit(dev);
279         if (priv->config.vf)
280                 mlx5_nl_mac_addr_flush(dev);
281         if (priv->nl_socket_route >= 0)
282                 close(priv->nl_socket_route);
283         if (priv->nl_socket_rdma >= 0)
284                 close(priv->nl_socket_rdma);
285         if (priv->mnl_socket)
286                 mlx5_nl_flow_socket_destroy(priv->mnl_socket);
287         ret = mlx5_hrxq_ibv_verify(dev);
288         if (ret)
289                 DRV_LOG(WARNING, "port %u some hash Rx queue still remain",
290                         dev->data->port_id);
291         ret = mlx5_ind_table_ibv_verify(dev);
292         if (ret)
293                 DRV_LOG(WARNING, "port %u some indirection table still remain",
294                         dev->data->port_id);
295         ret = mlx5_rxq_ibv_verify(dev);
296         if (ret)
297                 DRV_LOG(WARNING, "port %u some Verbs Rx queue still remain",
298                         dev->data->port_id);
299         ret = mlx5_rxq_verify(dev);
300         if (ret)
301                 DRV_LOG(WARNING, "port %u some Rx queues still remain",
302                         dev->data->port_id);
303         ret = mlx5_txq_ibv_verify(dev);
304         if (ret)
305                 DRV_LOG(WARNING, "port %u some Verbs Tx queue still remain",
306                         dev->data->port_id);
307         ret = mlx5_txq_verify(dev);
308         if (ret)
309                 DRV_LOG(WARNING, "port %u some Tx queues still remain",
310                         dev->data->port_id);
311         ret = mlx5_flow_verify(dev);
312         if (ret)
313                 DRV_LOG(WARNING, "port %u some flows still remain",
314                         dev->data->port_id);
315         if (priv->domain_id != RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
316                 unsigned int c = 0;
317                 unsigned int i = mlx5_dev_to_port_id(dev->device, NULL, 0);
318                 uint16_t port_id[i];
319
320                 i = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, i), i);
321                 while (i--) {
322                         struct priv *opriv =
323                                 rte_eth_devices[port_id[i]].data->dev_private;
324
325                         if (!opriv ||
326                             opriv->domain_id != priv->domain_id ||
327                             &rte_eth_devices[port_id[i]] == dev)
328                                 continue;
329                         ++c;
330                 }
331                 if (!c)
332                         claim_zero(rte_eth_switch_domain_free(priv->domain_id));
333         }
334         memset(priv, 0, sizeof(*priv));
335         priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
336 }
337
338 const struct eth_dev_ops mlx5_dev_ops = {
339         .dev_configure = mlx5_dev_configure,
340         .dev_start = mlx5_dev_start,
341         .dev_stop = mlx5_dev_stop,
342         .dev_set_link_down = mlx5_set_link_down,
343         .dev_set_link_up = mlx5_set_link_up,
344         .dev_close = mlx5_dev_close,
345         .promiscuous_enable = mlx5_promiscuous_enable,
346         .promiscuous_disable = mlx5_promiscuous_disable,
347         .allmulticast_enable = mlx5_allmulticast_enable,
348         .allmulticast_disable = mlx5_allmulticast_disable,
349         .link_update = mlx5_link_update,
350         .stats_get = mlx5_stats_get,
351         .stats_reset = mlx5_stats_reset,
352         .xstats_get = mlx5_xstats_get,
353         .xstats_reset = mlx5_xstats_reset,
354         .xstats_get_names = mlx5_xstats_get_names,
355         .dev_infos_get = mlx5_dev_infos_get,
356         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
357         .vlan_filter_set = mlx5_vlan_filter_set,
358         .rx_queue_setup = mlx5_rx_queue_setup,
359         .tx_queue_setup = mlx5_tx_queue_setup,
360         .rx_queue_release = mlx5_rx_queue_release,
361         .tx_queue_release = mlx5_tx_queue_release,
362         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
363         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
364         .mac_addr_remove = mlx5_mac_addr_remove,
365         .mac_addr_add = mlx5_mac_addr_add,
366         .mac_addr_set = mlx5_mac_addr_set,
367         .set_mc_addr_list = mlx5_set_mc_addr_list,
368         .mtu_set = mlx5_dev_set_mtu,
369         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
370         .vlan_offload_set = mlx5_vlan_offload_set,
371         .reta_update = mlx5_dev_rss_reta_update,
372         .reta_query = mlx5_dev_rss_reta_query,
373         .rss_hash_update = mlx5_rss_hash_update,
374         .rss_hash_conf_get = mlx5_rss_hash_conf_get,
375         .filter_ctrl = mlx5_dev_filter_ctrl,
376         .rx_descriptor_status = mlx5_rx_descriptor_status,
377         .tx_descriptor_status = mlx5_tx_descriptor_status,
378         .rx_queue_intr_enable = mlx5_rx_intr_enable,
379         .rx_queue_intr_disable = mlx5_rx_intr_disable,
380         .is_removed = mlx5_is_removed,
381 };
382
383 static const struct eth_dev_ops mlx5_dev_sec_ops = {
384         .stats_get = mlx5_stats_get,
385         .stats_reset = mlx5_stats_reset,
386         .xstats_get = mlx5_xstats_get,
387         .xstats_reset = mlx5_xstats_reset,
388         .xstats_get_names = mlx5_xstats_get_names,
389         .dev_infos_get = mlx5_dev_infos_get,
390         .rx_descriptor_status = mlx5_rx_descriptor_status,
391         .tx_descriptor_status = mlx5_tx_descriptor_status,
392 };
393
394 /* Available operators in flow isolated mode. */
395 const struct eth_dev_ops mlx5_dev_ops_isolate = {
396         .dev_configure = mlx5_dev_configure,
397         .dev_start = mlx5_dev_start,
398         .dev_stop = mlx5_dev_stop,
399         .dev_set_link_down = mlx5_set_link_down,
400         .dev_set_link_up = mlx5_set_link_up,
401         .dev_close = mlx5_dev_close,
402         .promiscuous_enable = mlx5_promiscuous_enable,
403         .promiscuous_disable = mlx5_promiscuous_disable,
404         .allmulticast_enable = mlx5_allmulticast_enable,
405         .allmulticast_disable = mlx5_allmulticast_disable,
406         .link_update = mlx5_link_update,
407         .stats_get = mlx5_stats_get,
408         .stats_reset = mlx5_stats_reset,
409         .xstats_get = mlx5_xstats_get,
410         .xstats_reset = mlx5_xstats_reset,
411         .xstats_get_names = mlx5_xstats_get_names,
412         .dev_infos_get = mlx5_dev_infos_get,
413         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
414         .vlan_filter_set = mlx5_vlan_filter_set,
415         .rx_queue_setup = mlx5_rx_queue_setup,
416         .tx_queue_setup = mlx5_tx_queue_setup,
417         .rx_queue_release = mlx5_rx_queue_release,
418         .tx_queue_release = mlx5_tx_queue_release,
419         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
420         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
421         .mac_addr_remove = mlx5_mac_addr_remove,
422         .mac_addr_add = mlx5_mac_addr_add,
423         .mac_addr_set = mlx5_mac_addr_set,
424         .set_mc_addr_list = mlx5_set_mc_addr_list,
425         .mtu_set = mlx5_dev_set_mtu,
426         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
427         .vlan_offload_set = mlx5_vlan_offload_set,
428         .filter_ctrl = mlx5_dev_filter_ctrl,
429         .rx_descriptor_status = mlx5_rx_descriptor_status,
430         .tx_descriptor_status = mlx5_tx_descriptor_status,
431         .rx_queue_intr_enable = mlx5_rx_intr_enable,
432         .rx_queue_intr_disable = mlx5_rx_intr_disable,
433         .is_removed = mlx5_is_removed,
434 };
435
436 /**
437  * Verify and store value for device argument.
438  *
439  * @param[in] key
440  *   Key argument to verify.
441  * @param[in] val
442  *   Value associated with key.
443  * @param opaque
444  *   User data.
445  *
446  * @return
447  *   0 on success, a negative errno value otherwise and rte_errno is set.
448  */
449 static int
450 mlx5_args_check(const char *key, const char *val, void *opaque)
451 {
452         struct mlx5_dev_config *config = opaque;
453         unsigned long tmp;
454
455         /* No-op, port representors are processed in mlx5_dev_spawn(). */
456         if (!strcmp(MLX5_REPRESENTOR, key))
457                 return 0;
458         errno = 0;
459         tmp = strtoul(val, NULL, 0);
460         if (errno) {
461                 rte_errno = errno;
462                 DRV_LOG(WARNING, "%s: \"%s\" is not a valid integer", key, val);
463                 return -rte_errno;
464         }
465         if (strcmp(MLX5_RXQ_CQE_COMP_EN, key) == 0) {
466                 config->cqe_comp = !!tmp;
467         } else if (strcmp(MLX5_RX_MPRQ_EN, key) == 0) {
468                 config->mprq.enabled = !!tmp;
469         } else if (strcmp(MLX5_RX_MPRQ_LOG_STRIDE_NUM, key) == 0) {
470                 config->mprq.stride_num_n = tmp;
471         } else if (strcmp(MLX5_RX_MPRQ_MAX_MEMCPY_LEN, key) == 0) {
472                 config->mprq.max_memcpy_len = tmp;
473         } else if (strcmp(MLX5_RXQS_MIN_MPRQ, key) == 0) {
474                 config->mprq.min_rxqs_num = tmp;
475         } else if (strcmp(MLX5_TXQ_INLINE, key) == 0) {
476                 config->txq_inline = tmp;
477         } else if (strcmp(MLX5_TXQS_MIN_INLINE, key) == 0) {
478                 config->txqs_inline = tmp;
479         } else if (strcmp(MLX5_TXQ_MPW_EN, key) == 0) {
480                 config->mps = !!tmp;
481         } else if (strcmp(MLX5_TXQ_MPW_HDR_DSEG_EN, key) == 0) {
482                 config->mpw_hdr_dseg = !!tmp;
483         } else if (strcmp(MLX5_TXQ_MAX_INLINE_LEN, key) == 0) {
484                 config->inline_max_packet_sz = tmp;
485         } else if (strcmp(MLX5_TX_VEC_EN, key) == 0) {
486                 config->tx_vec_en = !!tmp;
487         } else if (strcmp(MLX5_RX_VEC_EN, key) == 0) {
488                 config->rx_vec_en = !!tmp;
489         } else if (strcmp(MLX5_L3_VXLAN_EN, key) == 0) {
490                 config->l3_vxlan_en = !!tmp;
491         } else if (strcmp(MLX5_VF_NL_EN, key) == 0) {
492                 config->vf_nl_en = !!tmp;
493         } else {
494                 DRV_LOG(WARNING, "%s: unknown parameter", key);
495                 rte_errno = EINVAL;
496                 return -rte_errno;
497         }
498         return 0;
499 }
500
501 /**
502  * Parse device parameters.
503  *
504  * @param config
505  *   Pointer to device configuration structure.
506  * @param devargs
507  *   Device arguments structure.
508  *
509  * @return
510  *   0 on success, a negative errno value otherwise and rte_errno is set.
511  */
512 static int
513 mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs)
514 {
515         const char **params = (const char *[]){
516                 MLX5_RXQ_CQE_COMP_EN,
517                 MLX5_RX_MPRQ_EN,
518                 MLX5_RX_MPRQ_LOG_STRIDE_NUM,
519                 MLX5_RX_MPRQ_MAX_MEMCPY_LEN,
520                 MLX5_RXQS_MIN_MPRQ,
521                 MLX5_TXQ_INLINE,
522                 MLX5_TXQS_MIN_INLINE,
523                 MLX5_TXQ_MPW_EN,
524                 MLX5_TXQ_MPW_HDR_DSEG_EN,
525                 MLX5_TXQ_MAX_INLINE_LEN,
526                 MLX5_TX_VEC_EN,
527                 MLX5_RX_VEC_EN,
528                 MLX5_L3_VXLAN_EN,
529                 MLX5_VF_NL_EN,
530                 MLX5_REPRESENTOR,
531                 NULL,
532         };
533         struct rte_kvargs *kvlist;
534         int ret = 0;
535         int i;
536
537         if (devargs == NULL)
538                 return 0;
539         /* Following UGLY cast is done to pass checkpatch. */
540         kvlist = rte_kvargs_parse(devargs->args, params);
541         if (kvlist == NULL)
542                 return 0;
543         /* Process parameters. */
544         for (i = 0; (params[i] != NULL); ++i) {
545                 if (rte_kvargs_count(kvlist, params[i])) {
546                         ret = rte_kvargs_process(kvlist, params[i],
547                                                  mlx5_args_check, config);
548                         if (ret) {
549                                 rte_errno = EINVAL;
550                                 rte_kvargs_free(kvlist);
551                                 return -rte_errno;
552                         }
553                 }
554         }
555         rte_kvargs_free(kvlist);
556         return 0;
557 }
558
559 static struct rte_pci_driver mlx5_driver;
560
561 /*
562  * Reserved UAR address space for TXQ UAR(hw doorbell) mapping, process
563  * local resource used by both primary and secondary to avoid duplicate
564  * reservation.
565  * The space has to be available on both primary and secondary process,
566  * TXQ UAR maps to this area using fixed mmap w/o double check.
567  */
568 static void *uar_base;
569
570 static int
571 find_lower_va_bound(const struct rte_memseg_list *msl,
572                 const struct rte_memseg *ms, void *arg)
573 {
574         void **addr = arg;
575
576         if (msl->external)
577                 return 0;
578         if (*addr == NULL)
579                 *addr = ms->addr;
580         else
581                 *addr = RTE_MIN(*addr, ms->addr);
582
583         return 0;
584 }
585
586 /**
587  * Reserve UAR address space for primary process.
588  *
589  * @param[in] dev
590  *   Pointer to Ethernet device.
591  *
592  * @return
593  *   0 on success, a negative errno value otherwise and rte_errno is set.
594  */
595 static int
596 mlx5_uar_init_primary(struct rte_eth_dev *dev)
597 {
598         struct priv *priv = dev->data->dev_private;
599         void *addr = (void *)0;
600
601         if (uar_base) { /* UAR address space mapped. */
602                 priv->uar_base = uar_base;
603                 return 0;
604         }
605         /* find out lower bound of hugepage segments */
606         rte_memseg_walk(find_lower_va_bound, &addr);
607
608         /* keep distance to hugepages to minimize potential conflicts. */
609         addr = RTE_PTR_SUB(addr, (uintptr_t)(MLX5_UAR_OFFSET + MLX5_UAR_SIZE));
610         /* anonymous mmap, no real memory consumption. */
611         addr = mmap(addr, MLX5_UAR_SIZE,
612                     PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
613         if (addr == MAP_FAILED) {
614                 DRV_LOG(ERR,
615                         "port %u failed to reserve UAR address space, please"
616                         " adjust MLX5_UAR_SIZE or try --base-virtaddr",
617                         dev->data->port_id);
618                 rte_errno = ENOMEM;
619                 return -rte_errno;
620         }
621         /* Accept either same addr or a new addr returned from mmap if target
622          * range occupied.
623          */
624         DRV_LOG(INFO, "port %u reserved UAR address space: %p",
625                 dev->data->port_id, addr);
626         priv->uar_base = addr; /* for primary and secondary UAR re-mmap. */
627         uar_base = addr; /* process local, don't reserve again. */
628         return 0;
629 }
630
631 /**
632  * Reserve UAR address space for secondary process, align with
633  * primary process.
634  *
635  * @param[in] dev
636  *   Pointer to Ethernet device.
637  *
638  * @return
639  *   0 on success, a negative errno value otherwise and rte_errno is set.
640  */
641 static int
642 mlx5_uar_init_secondary(struct rte_eth_dev *dev)
643 {
644         struct priv *priv = dev->data->dev_private;
645         void *addr;
646
647         assert(priv->uar_base);
648         if (uar_base) { /* already reserved. */
649                 assert(uar_base == priv->uar_base);
650                 return 0;
651         }
652         /* anonymous mmap, no real memory consumption. */
653         addr = mmap(priv->uar_base, MLX5_UAR_SIZE,
654                     PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
655         if (addr == MAP_FAILED) {
656                 DRV_LOG(ERR, "port %u UAR mmap failed: %p size: %llu",
657                         dev->data->port_id, priv->uar_base, MLX5_UAR_SIZE);
658                 rte_errno = ENXIO;
659                 return -rte_errno;
660         }
661         if (priv->uar_base != addr) {
662                 DRV_LOG(ERR,
663                         "port %u UAR address %p size %llu occupied, please"
664                         " adjust MLX5_UAR_OFFSET or try EAL parameter"
665                         " --base-virtaddr",
666                         dev->data->port_id, priv->uar_base, MLX5_UAR_SIZE);
667                 rte_errno = ENXIO;
668                 return -rte_errno;
669         }
670         uar_base = addr; /* process local, don't reserve again */
671         DRV_LOG(INFO, "port %u reserved UAR address space: %p",
672                 dev->data->port_id, addr);
673         return 0;
674 }
675
676 /**
677  * Spawn an Ethernet device from Verbs information.
678  *
679  * @param dpdk_dev
680  *   Backing DPDK device.
681  * @param ibv_dev
682  *   Verbs device.
683  * @param vf
684  *   If nonzero, enable VF-specific features.
685  * @param[in] switch_info
686  *   Switch properties of Ethernet device.
687  *
688  * @return
689  *   A valid Ethernet device object on success, NULL otherwise and rte_errno
690  *   is set. The following error is defined:
691  *
692  *   EBUSY: device is not supposed to be spawned.
693  */
694 static struct rte_eth_dev *
695 mlx5_dev_spawn(struct rte_device *dpdk_dev,
696                struct ibv_device *ibv_dev,
697                int vf,
698                const struct mlx5_switch_info *switch_info)
699 {
700         struct ibv_context *ctx;
701         struct ibv_device_attr_ex attr;
702         struct ibv_port_attr port_attr;
703         struct ibv_pd *pd = NULL;
704         struct mlx5dv_context dv_attr = { .comp_mask = 0 };
705         struct mlx5_dev_config config = {
706                 .vf = !!vf,
707                 .mps = MLX5_ARG_UNSET,
708                 .tx_vec_en = 1,
709                 .rx_vec_en = 1,
710                 .mpw_hdr_dseg = 0,
711                 .txq_inline = MLX5_ARG_UNSET,
712                 .txqs_inline = MLX5_ARG_UNSET,
713                 .inline_max_packet_sz = MLX5_ARG_UNSET,
714                 .vf_nl_en = 1,
715                 .mprq = {
716                         .enabled = 0,
717                         .stride_num_n = MLX5_MPRQ_STRIDE_NUM_N,
718                         .max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN,
719                         .min_rxqs_num = MLX5_MPRQ_MIN_RXQS,
720                 },
721         };
722         struct rte_eth_dev *eth_dev = NULL;
723         struct priv *priv = NULL;
724         int err = 0;
725         unsigned int mps;
726         unsigned int cqe_comp;
727         unsigned int tunnel_en = 0;
728         unsigned int mpls_en = 0;
729         unsigned int swp = 0;
730         unsigned int mprq = 0;
731         unsigned int mprq_min_stride_size_n = 0;
732         unsigned int mprq_max_stride_size_n = 0;
733         unsigned int mprq_min_stride_num_n = 0;
734         unsigned int mprq_max_stride_num_n = 0;
735 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
736         struct ibv_counter_set_description cs_desc = { .counter_type = 0 };
737 #endif
738         struct ether_addr mac;
739         char name[RTE_ETH_NAME_MAX_LEN];
740         int own_domain_id = 0;
741         unsigned int i;
742
743         /* Determine if this port representor is supposed to be spawned. */
744         if (switch_info->representor && dpdk_dev->devargs) {
745                 struct rte_eth_devargs eth_da;
746
747                 err = rte_eth_devargs_parse(dpdk_dev->devargs->args, &eth_da);
748                 if (err) {
749                         rte_errno = -err;
750                         DRV_LOG(ERR, "failed to process device arguments: %s",
751                                 strerror(rte_errno));
752                         return NULL;
753                 }
754                 for (i = 0; i < eth_da.nb_representor_ports; ++i)
755                         if (eth_da.representor_ports[i] ==
756                             (uint16_t)switch_info->port_name)
757                                 break;
758                 if (i == eth_da.nb_representor_ports) {
759                         rte_errno = EBUSY;
760                         return NULL;
761                 }
762         }
763         /* Prepare shared data between primary and secondary process. */
764         mlx5_prepare_shared_data();
765         errno = 0;
766         ctx = mlx5_glue->open_device(ibv_dev);
767         if (!ctx) {
768                 rte_errno = errno ? errno : ENODEV;
769                 return NULL;
770         }
771 #ifdef HAVE_IBV_MLX5_MOD_SWP
772         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP;
773 #endif
774         /*
775          * Multi-packet send is supported by ConnectX-4 Lx PF as well
776          * as all ConnectX-5 devices.
777          */
778 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
779         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS;
780 #endif
781 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
782         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ;
783 #endif
784         mlx5_glue->dv_query_device(ctx, &dv_attr);
785         if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) {
786                 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) {
787                         DRV_LOG(DEBUG, "enhanced MPW is supported");
788                         mps = MLX5_MPW_ENHANCED;
789                 } else {
790                         DRV_LOG(DEBUG, "MPW is supported");
791                         mps = MLX5_MPW;
792                 }
793         } else {
794                 DRV_LOG(DEBUG, "MPW isn't supported");
795                 mps = MLX5_MPW_DISABLED;
796         }
797 #ifdef HAVE_IBV_MLX5_MOD_SWP
798         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP)
799                 swp = dv_attr.sw_parsing_caps.sw_parsing_offloads;
800         DRV_LOG(DEBUG, "SWP support: %u", swp);
801 #endif
802         config.swp = !!swp;
803 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
804         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) {
805                 struct mlx5dv_striding_rq_caps mprq_caps =
806                         dv_attr.striding_rq_caps;
807
808                 DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d",
809                         mprq_caps.min_single_stride_log_num_of_bytes);
810                 DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d",
811                         mprq_caps.max_single_stride_log_num_of_bytes);
812                 DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d",
813                         mprq_caps.min_single_wqe_log_num_of_strides);
814                 DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d",
815                         mprq_caps.max_single_wqe_log_num_of_strides);
816                 DRV_LOG(DEBUG, "\tsupported_qpts: %d",
817                         mprq_caps.supported_qpts);
818                 DRV_LOG(DEBUG, "device supports Multi-Packet RQ");
819                 mprq = 1;
820                 mprq_min_stride_size_n =
821                         mprq_caps.min_single_stride_log_num_of_bytes;
822                 mprq_max_stride_size_n =
823                         mprq_caps.max_single_stride_log_num_of_bytes;
824                 mprq_min_stride_num_n =
825                         mprq_caps.min_single_wqe_log_num_of_strides;
826                 mprq_max_stride_num_n =
827                         mprq_caps.max_single_wqe_log_num_of_strides;
828                 config.mprq.stride_num_n = RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N,
829                                                    mprq_min_stride_num_n);
830         }
831 #endif
832         if (RTE_CACHE_LINE_SIZE == 128 &&
833             !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP))
834                 cqe_comp = 0;
835         else
836                 cqe_comp = 1;
837         config.cqe_comp = cqe_comp;
838 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
839         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) {
840                 tunnel_en = ((dv_attr.tunnel_offloads_caps &
841                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) &&
842                              (dv_attr.tunnel_offloads_caps &
843                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE));
844         }
845         DRV_LOG(DEBUG, "tunnel offloading is %ssupported",
846                 tunnel_en ? "" : "not ");
847 #else
848         DRV_LOG(WARNING,
849                 "tunnel offloading disabled due to old OFED/rdma-core version");
850 #endif
851         config.tunnel_en = tunnel_en;
852 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
853         mpls_en = ((dv_attr.tunnel_offloads_caps &
854                     MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) &&
855                    (dv_attr.tunnel_offloads_caps &
856                     MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP));
857         DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported",
858                 mpls_en ? "" : "not ");
859 #else
860         DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to"
861                 " old OFED/rdma-core version or firmware configuration");
862 #endif
863         config.mpls_en = mpls_en;
864         err = mlx5_glue->query_device_ex(ctx, NULL, &attr);
865         if (err) {
866                 DEBUG("ibv_query_device_ex() failed");
867                 goto error;
868         }
869         if (!switch_info->representor)
870                 rte_strlcpy(name, dpdk_dev->name, sizeof(name));
871         else
872                 snprintf(name, sizeof(name), "%s_representor_%u",
873                          dpdk_dev->name, switch_info->port_name);
874         DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name);
875         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
876                 eth_dev = rte_eth_dev_attach_secondary(name);
877                 if (eth_dev == NULL) {
878                         DRV_LOG(ERR, "can not attach rte ethdev");
879                         rte_errno = ENOMEM;
880                         err = rte_errno;
881                         goto error;
882                 }
883                 eth_dev->device = dpdk_dev;
884                 eth_dev->dev_ops = &mlx5_dev_sec_ops;
885                 err = mlx5_uar_init_secondary(eth_dev);
886                 if (err) {
887                         err = rte_errno;
888                         goto error;
889                 }
890                 /* Receive command fd from primary process */
891                 err = mlx5_socket_connect(eth_dev);
892                 if (err < 0) {
893                         err = rte_errno;
894                         goto error;
895                 }
896                 /* Remap UAR for Tx queues. */
897                 err = mlx5_tx_uar_remap(eth_dev, err);
898                 if (err) {
899                         err = rte_errno;
900                         goto error;
901                 }
902                 /*
903                  * Ethdev pointer is still required as input since
904                  * the primary device is not accessible from the
905                  * secondary process.
906                  */
907                 eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev);
908                 eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev);
909                 claim_zero(mlx5_glue->close_device(ctx));
910                 return eth_dev;
911         }
912         /* Check port status. */
913         err = mlx5_glue->query_port(ctx, 1, &port_attr);
914         if (err) {
915                 DRV_LOG(ERR, "port query failed: %s", strerror(err));
916                 goto error;
917         }
918         if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
919                 DRV_LOG(ERR, "port is not configured in Ethernet mode");
920                 err = EINVAL;
921                 goto error;
922         }
923         if (port_attr.state != IBV_PORT_ACTIVE)
924                 DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)",
925                         mlx5_glue->port_state_str(port_attr.state),
926                         port_attr.state);
927         /* Allocate protection domain. */
928         pd = mlx5_glue->alloc_pd(ctx);
929         if (pd == NULL) {
930                 DRV_LOG(ERR, "PD allocation failure");
931                 err = ENOMEM;
932                 goto error;
933         }
934         priv = rte_zmalloc("ethdev private structure",
935                            sizeof(*priv),
936                            RTE_CACHE_LINE_SIZE);
937         if (priv == NULL) {
938                 DRV_LOG(ERR, "priv allocation failure");
939                 err = ENOMEM;
940                 goto error;
941         }
942         priv->ctx = ctx;
943         strncpy(priv->ibdev_name, priv->ctx->device->name,
944                 sizeof(priv->ibdev_name));
945         strncpy(priv->ibdev_path, priv->ctx->device->ibdev_path,
946                 sizeof(priv->ibdev_path));
947         priv->device_attr = attr;
948         priv->pd = pd;
949         priv->mtu = ETHER_MTU;
950 #ifndef RTE_ARCH_64
951         /* Initialize UAR access locks for 32bit implementations. */
952         rte_spinlock_init(&priv->uar_lock_cq);
953         for (i = 0; i < MLX5_UAR_PAGE_NUM_MAX; i++)
954                 rte_spinlock_init(&priv->uar_lock[i]);
955 #endif
956         /* Some internal functions rely on Netlink sockets, open them now. */
957         priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA);
958         priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE);
959         priv->nl_sn = 0;
960         priv->representor = !!switch_info->representor;
961         priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
962         priv->representor_id =
963                 switch_info->representor ? switch_info->port_name : -1;
964         /*
965          * Look for sibling devices in order to reuse their switch domain
966          * if any, otherwise allocate one.
967          */
968         i = mlx5_dev_to_port_id(dpdk_dev, NULL, 0);
969         if (i > 0) {
970                 uint16_t port_id[i];
971
972                 i = RTE_MIN(mlx5_dev_to_port_id(dpdk_dev, port_id, i), i);
973                 while (i--) {
974                         const struct priv *opriv =
975                                 rte_eth_devices[port_id[i]].data->dev_private;
976
977                         if (!opriv ||
978                             opriv->domain_id ==
979                             RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID)
980                                 continue;
981                         priv->domain_id = opriv->domain_id;
982                         break;
983                 }
984         }
985         if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
986                 err = rte_eth_switch_domain_alloc(&priv->domain_id);
987                 if (err) {
988                         err = rte_errno;
989                         DRV_LOG(ERR, "unable to allocate switch domain: %s",
990                                 strerror(rte_errno));
991                         goto error;
992                 }
993                 own_domain_id = 1;
994         }
995         err = mlx5_args(&config, dpdk_dev->devargs);
996         if (err) {
997                 err = rte_errno;
998                 DRV_LOG(ERR, "failed to process device arguments: %s",
999                         strerror(rte_errno));
1000                 goto error;
1001         }
1002         config.hw_csum = !!(attr.device_cap_flags_ex & IBV_DEVICE_RAW_IP_CSUM);
1003         DRV_LOG(DEBUG, "checksum offloading is %ssupported",
1004                 (config.hw_csum ? "" : "not "));
1005 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
1006         config.flow_counter_en = !!attr.max_counter_sets;
1007         mlx5_glue->describe_counter_set(ctx, 0, &cs_desc);
1008         DRV_LOG(DEBUG, "counter type = %d, num of cs = %ld, attributes = %d",
1009                 cs_desc.counter_type, cs_desc.num_of_cs,
1010                 cs_desc.attributes);
1011 #endif
1012         config.ind_table_max_size =
1013                 attr.rss_caps.max_rwq_indirection_table_size;
1014         /*
1015          * Remove this check once DPDK supports larger/variable
1016          * indirection tables.
1017          */
1018         if (config.ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512)
1019                 config.ind_table_max_size = ETH_RSS_RETA_SIZE_512;
1020         DRV_LOG(DEBUG, "maximum Rx indirection table size is %u",
1021                 config.ind_table_max_size);
1022         config.hw_vlan_strip = !!(attr.raw_packet_caps &
1023                                   IBV_RAW_PACKET_CAP_CVLAN_STRIPPING);
1024         DRV_LOG(DEBUG, "VLAN stripping is %ssupported",
1025                 (config.hw_vlan_strip ? "" : "not "));
1026         config.hw_fcs_strip = !!(attr.raw_packet_caps &
1027                                  IBV_RAW_PACKET_CAP_SCATTER_FCS);
1028         DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported",
1029                 (config.hw_fcs_strip ? "" : "not "));
1030 #ifdef HAVE_IBV_WQ_FLAG_RX_END_PADDING
1031         config.hw_padding = !!attr.rx_pad_end_addr_align;
1032 #endif
1033         DRV_LOG(DEBUG, "hardware Rx end alignment padding is %ssupported",
1034                 (config.hw_padding ? "" : "not "));
1035         config.tso = (attr.tso_caps.max_tso > 0 &&
1036                       (attr.tso_caps.supported_qpts &
1037                        (1 << IBV_QPT_RAW_PACKET)));
1038         if (config.tso)
1039                 config.tso_max_payload_sz = attr.tso_caps.max_tso;
1040         /*
1041          * MPW is disabled by default, while the Enhanced MPW is enabled
1042          * by default.
1043          */
1044         if (config.mps == MLX5_ARG_UNSET)
1045                 config.mps = (mps == MLX5_MPW_ENHANCED) ? MLX5_MPW_ENHANCED :
1046                                                           MLX5_MPW_DISABLED;
1047         else
1048                 config.mps = config.mps ? mps : MLX5_MPW_DISABLED;
1049         DRV_LOG(INFO, "%sMPS is %s",
1050                 config.mps == MLX5_MPW_ENHANCED ? "enhanced " : "",
1051                 config.mps != MLX5_MPW_DISABLED ? "enabled" : "disabled");
1052         if (config.cqe_comp && !cqe_comp) {
1053                 DRV_LOG(WARNING, "Rx CQE compression isn't supported");
1054                 config.cqe_comp = 0;
1055         }
1056         if (config.mprq.enabled && mprq) {
1057                 if (config.mprq.stride_num_n > mprq_max_stride_num_n ||
1058                     config.mprq.stride_num_n < mprq_min_stride_num_n) {
1059                         config.mprq.stride_num_n =
1060                                 RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N,
1061                                         mprq_min_stride_num_n);
1062                         DRV_LOG(WARNING,
1063                                 "the number of strides"
1064                                 " for Multi-Packet RQ is out of range,"
1065                                 " setting default value (%u)",
1066                                 1 << config.mprq.stride_num_n);
1067                 }
1068                 config.mprq.min_stride_size_n = mprq_min_stride_size_n;
1069                 config.mprq.max_stride_size_n = mprq_max_stride_size_n;
1070         } else if (config.mprq.enabled && !mprq) {
1071                 DRV_LOG(WARNING, "Multi-Packet RQ isn't supported");
1072                 config.mprq.enabled = 0;
1073         }
1074         eth_dev = rte_eth_dev_allocate(name);
1075         if (eth_dev == NULL) {
1076                 DRV_LOG(ERR, "can not allocate rte ethdev");
1077                 err = ENOMEM;
1078                 goto error;
1079         }
1080         if (priv->representor)
1081                 eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
1082         eth_dev->data->dev_private = priv;
1083         priv->dev_data = eth_dev->data;
1084         eth_dev->data->mac_addrs = priv->mac;
1085         eth_dev->device = dpdk_dev;
1086         eth_dev->device->driver = &mlx5_driver.driver;
1087         err = mlx5_uar_init_primary(eth_dev);
1088         if (err) {
1089                 err = rte_errno;
1090                 goto error;
1091         }
1092         /* Configure the first MAC address by default. */
1093         if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) {
1094                 DRV_LOG(ERR,
1095                         "port %u cannot get MAC address, is mlx5_en"
1096                         " loaded? (errno: %s)",
1097                         eth_dev->data->port_id, strerror(rte_errno));
1098                 err = ENODEV;
1099                 goto error;
1100         }
1101         DRV_LOG(INFO,
1102                 "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
1103                 eth_dev->data->port_id,
1104                 mac.addr_bytes[0], mac.addr_bytes[1],
1105                 mac.addr_bytes[2], mac.addr_bytes[3],
1106                 mac.addr_bytes[4], mac.addr_bytes[5]);
1107 #ifndef NDEBUG
1108         {
1109                 char ifname[IF_NAMESIZE];
1110
1111                 if (mlx5_get_ifname(eth_dev, &ifname) == 0)
1112                         DRV_LOG(DEBUG, "port %u ifname is \"%s\"",
1113                                 eth_dev->data->port_id, ifname);
1114                 else
1115                         DRV_LOG(DEBUG, "port %u ifname is unknown",
1116                                 eth_dev->data->port_id);
1117         }
1118 #endif
1119         /* Get actual MTU if possible. */
1120         err = mlx5_get_mtu(eth_dev, &priv->mtu);
1121         if (err) {
1122                 err = rte_errno;
1123                 goto error;
1124         }
1125         DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id,
1126                 priv->mtu);
1127         /* Initialize burst functions to prevent crashes before link-up. */
1128         eth_dev->rx_pkt_burst = removed_rx_burst;
1129         eth_dev->tx_pkt_burst = removed_tx_burst;
1130         eth_dev->dev_ops = &mlx5_dev_ops;
1131         /* Register MAC address. */
1132         claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
1133         if (vf && config.vf_nl_en)
1134                 mlx5_nl_mac_addr_sync(eth_dev);
1135         priv->mnl_socket = mlx5_nl_flow_socket_create();
1136         if (!priv->mnl_socket) {
1137                 err = -rte_errno;
1138                 DRV_LOG(WARNING,
1139                         "flow rules relying on switch offloads will not be"
1140                         " supported: cannot open libmnl socket: %s",
1141                         strerror(rte_errno));
1142         } else {
1143                 struct rte_flow_error error;
1144                 unsigned int ifindex = mlx5_ifindex(eth_dev);
1145
1146                 if (!ifindex) {
1147                         err = -rte_errno;
1148                         error.message =
1149                                 "cannot retrieve network interface index";
1150                 } else {
1151                         err = mlx5_nl_flow_init(priv->mnl_socket, ifindex,
1152                                                 &error);
1153                 }
1154                 if (err) {
1155                         DRV_LOG(WARNING,
1156                                 "flow rules relying on switch offloads will"
1157                                 " not be supported: %s: %s",
1158                                 error.message, strerror(rte_errno));
1159                         mlx5_nl_flow_socket_destroy(priv->mnl_socket);
1160                         priv->mnl_socket = NULL;
1161                 }
1162         }
1163         TAILQ_INIT(&priv->flows);
1164         TAILQ_INIT(&priv->ctrl_flows);
1165         /* Hint libmlx5 to use PMD allocator for data plane resources */
1166         struct mlx5dv_ctx_allocators alctr = {
1167                 .alloc = &mlx5_alloc_verbs_buf,
1168                 .free = &mlx5_free_verbs_buf,
1169                 .data = priv,
1170         };
1171         mlx5_glue->dv_set_context_attr(ctx, MLX5DV_CTX_ATTR_BUF_ALLOCATORS,
1172                                        (void *)((uintptr_t)&alctr));
1173         /* Bring Ethernet device up. */
1174         DRV_LOG(DEBUG, "port %u forcing Ethernet interface up",
1175                 eth_dev->data->port_id);
1176         mlx5_set_link_up(eth_dev);
1177         /*
1178          * Even though the interrupt handler is not installed yet,
1179          * interrupts will still trigger on the asyn_fd from
1180          * Verbs context returned by ibv_open_device().
1181          */
1182         mlx5_link_update(eth_dev, 0);
1183         /* Store device configuration on private structure. */
1184         priv->config = config;
1185         /* Supported Verbs flow priority number detection. */
1186         err = mlx5_flow_discover_priorities(eth_dev);
1187         if (err < 0)
1188                 goto error;
1189         priv->config.flow_prio = err;
1190         /*
1191          * Once the device is added to the list of memory event
1192          * callback, its global MR cache table cannot be expanded
1193          * on the fly because of deadlock. If it overflows, lookup
1194          * should be done by searching MR list linearly, which is slow.
1195          */
1196         err = mlx5_mr_btree_init(&priv->mr.cache,
1197                                  MLX5_MR_BTREE_CACHE_N * 2,
1198                                  eth_dev->device->numa_node);
1199         if (err) {
1200                 err = rte_errno;
1201                 goto error;
1202         }
1203         /* Add device to memory callback list. */
1204         rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock);
1205         LIST_INSERT_HEAD(&mlx5_shared_data->mem_event_cb_list,
1206                          priv, mem_event_cb);
1207         rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock);
1208         return eth_dev;
1209 error:
1210         if (priv) {
1211                 if (priv->nl_socket_route >= 0)
1212                         close(priv->nl_socket_route);
1213                 if (priv->nl_socket_rdma >= 0)
1214                         close(priv->nl_socket_rdma);
1215                 if (priv->mnl_socket)
1216                         mlx5_nl_flow_socket_destroy(priv->mnl_socket);
1217                 if (own_domain_id)
1218                         claim_zero(rte_eth_switch_domain_free(priv->domain_id));
1219                 rte_free(priv);
1220         }
1221         if (pd)
1222                 claim_zero(mlx5_glue->dealloc_pd(pd));
1223         if (eth_dev)
1224                 rte_eth_dev_release_port(eth_dev);
1225         if (ctx)
1226                 claim_zero(mlx5_glue->close_device(ctx));
1227         assert(err > 0);
1228         rte_errno = err;
1229         return NULL;
1230 }
1231
1232 /** Data associated with devices to spawn. */
1233 struct mlx5_dev_spawn_data {
1234         unsigned int ifindex; /**< Network interface index. */
1235         struct mlx5_switch_info info; /**< Switch information. */
1236         struct ibv_device *ibv_dev; /**< Associated IB device. */
1237         struct rte_eth_dev *eth_dev; /**< Associated Ethernet device. */
1238 };
1239
1240 /**
1241  * Comparison callback to sort device data.
1242  *
1243  * This is meant to be used with qsort().
1244  *
1245  * @param a[in]
1246  *   Pointer to pointer to first data object.
1247  * @param b[in]
1248  *   Pointer to pointer to second data object.
1249  *
1250  * @return
1251  *   0 if both objects are equal, less than 0 if the first argument is less
1252  *   than the second, greater than 0 otherwise.
1253  */
1254 static int
1255 mlx5_dev_spawn_data_cmp(const void *a, const void *b)
1256 {
1257         const struct mlx5_switch_info *si_a =
1258                 &((const struct mlx5_dev_spawn_data *)a)->info;
1259         const struct mlx5_switch_info *si_b =
1260                 &((const struct mlx5_dev_spawn_data *)b)->info;
1261         int ret;
1262
1263         /* Master device first. */
1264         ret = si_b->master - si_a->master;
1265         if (ret)
1266                 return ret;
1267         /* Then representor devices. */
1268         ret = si_b->representor - si_a->representor;
1269         if (ret)
1270                 return ret;
1271         /* Unidentified devices come last in no specific order. */
1272         if (!si_a->representor)
1273                 return 0;
1274         /* Order representors by name. */
1275         return si_a->port_name - si_b->port_name;
1276 }
1277
1278 /**
1279  * DPDK callback to register a PCI device.
1280  *
1281  * This function spawns Ethernet devices out of a given PCI device.
1282  *
1283  * @param[in] pci_drv
1284  *   PCI driver structure (mlx5_driver).
1285  * @param[in] pci_dev
1286  *   PCI device information.
1287  *
1288  * @return
1289  *   0 on success, a negative errno value otherwise and rte_errno is set.
1290  */
1291 static int
1292 mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1293                struct rte_pci_device *pci_dev)
1294 {
1295         struct ibv_device **ibv_list;
1296         unsigned int n = 0;
1297         int vf;
1298         int ret;
1299
1300         assert(pci_drv == &mlx5_driver);
1301         errno = 0;
1302         ibv_list = mlx5_glue->get_device_list(&ret);
1303         if (!ibv_list) {
1304                 rte_errno = errno ? errno : ENOSYS;
1305                 DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?");
1306                 return -rte_errno;
1307         }
1308
1309         struct ibv_device *ibv_match[ret + 1];
1310
1311         while (ret-- > 0) {
1312                 struct rte_pci_addr pci_addr;
1313
1314                 DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name);
1315                 if (mlx5_ibv_device_to_pci_addr(ibv_list[ret], &pci_addr))
1316                         continue;
1317                 if (pci_dev->addr.domain != pci_addr.domain ||
1318                     pci_dev->addr.bus != pci_addr.bus ||
1319                     pci_dev->addr.devid != pci_addr.devid ||
1320                     pci_dev->addr.function != pci_addr.function)
1321                         continue;
1322                 DRV_LOG(INFO, "PCI information matches for device \"%s\"",
1323                         ibv_list[ret]->name);
1324                 ibv_match[n++] = ibv_list[ret];
1325         }
1326         ibv_match[n] = NULL;
1327
1328         struct mlx5_dev_spawn_data list[n];
1329         int nl_route = n ? mlx5_nl_init(NETLINK_ROUTE) : -1;
1330         int nl_rdma = n ? mlx5_nl_init(NETLINK_RDMA) : -1;
1331         unsigned int i;
1332         unsigned int u;
1333
1334         /*
1335          * The existence of several matching entries (n > 1) means port
1336          * representors have been instantiated. No existing Verbs call nor
1337          * /sys entries can tell them apart, this can only be done through
1338          * Netlink calls assuming kernel drivers are recent enough to
1339          * support them.
1340          *
1341          * In the event of identification failure through Netlink, try again
1342          * through sysfs, then either:
1343          *
1344          * 1. No device matches (n == 0), complain and bail out.
1345          * 2. A single IB device matches (n == 1) and is not a representor,
1346          *    assume no switch support.
1347          * 3. Otherwise no safe assumptions can be made; complain louder and
1348          *    bail out.
1349          */
1350         for (i = 0; i != n; ++i) {
1351                 list[i].ibv_dev = ibv_match[i];
1352                 list[i].eth_dev = NULL;
1353                 if (nl_rdma < 0)
1354                         list[i].ifindex = 0;
1355                 else
1356                         list[i].ifindex = mlx5_nl_ifindex
1357                                 (nl_rdma, list[i].ibv_dev->name);
1358                 if (nl_route < 0 ||
1359                     !list[i].ifindex ||
1360                     mlx5_nl_switch_info(nl_route, list[i].ifindex,
1361                                         &list[i].info) ||
1362                     ((!list[i].info.representor && !list[i].info.master) &&
1363                      mlx5_sysfs_switch_info(list[i].ifindex, &list[i].info))) {
1364                         list[i].ifindex = 0;
1365                         memset(&list[i].info, 0, sizeof(list[i].info));
1366                         continue;
1367                 }
1368         }
1369         if (nl_rdma >= 0)
1370                 close(nl_rdma);
1371         if (nl_route >= 0)
1372                 close(nl_route);
1373         /* Count unidentified devices. */
1374         for (u = 0, i = 0; i != n; ++i)
1375                 if (!list[i].info.master && !list[i].info.representor)
1376                         ++u;
1377         if (u) {
1378                 if (n == 1 && u == 1) {
1379                         /* Case #2. */
1380                         DRV_LOG(INFO, "no switch support detected");
1381                 } else {
1382                         /* Case #3. */
1383                         DRV_LOG(ERR,
1384                                 "unable to tell which of the matching devices"
1385                                 " is the master (lack of kernel support?)");
1386                         n = 0;
1387                 }
1388         }
1389         /*
1390          * Sort list to probe devices in natural order for users convenience
1391          * (i.e. master first, then representors from lowest to highest ID).
1392          */
1393         if (n)
1394                 qsort(list, n, sizeof(*list), mlx5_dev_spawn_data_cmp);
1395         switch (pci_dev->id.device_id) {
1396         case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF:
1397         case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF:
1398         case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF:
1399         case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF:
1400                 vf = 1;
1401                 break;
1402         default:
1403                 vf = 0;
1404         }
1405         for (i = 0; i != n; ++i) {
1406                 uint32_t restore;
1407
1408                 list[i].eth_dev = mlx5_dev_spawn
1409                         (&pci_dev->device, list[i].ibv_dev, vf, &list[i].info);
1410                 if (!list[i].eth_dev) {
1411                         if (rte_errno != EBUSY)
1412                                 break;
1413                         /* Device is disabled, ignore it. */
1414                         continue;
1415                 }
1416                 restore = list[i].eth_dev->data->dev_flags;
1417                 rte_eth_copy_pci_info(list[i].eth_dev, pci_dev);
1418                 /* Restore non-PCI flags cleared by the above call. */
1419                 list[i].eth_dev->data->dev_flags |= restore;
1420                 rte_eth_dev_probing_finish(list[i].eth_dev);
1421         }
1422         mlx5_glue->free_device_list(ibv_list);
1423         if (!n) {
1424                 DRV_LOG(WARNING,
1425                         "no Verbs device matches PCI device " PCI_PRI_FMT ","
1426                         " are kernel drivers loaded?",
1427                         pci_dev->addr.domain, pci_dev->addr.bus,
1428                         pci_dev->addr.devid, pci_dev->addr.function);
1429                 rte_errno = ENOENT;
1430                 ret = -rte_errno;
1431         } else if (i != n) {
1432                 DRV_LOG(ERR,
1433                         "probe of PCI device " PCI_PRI_FMT " aborted after"
1434                         " encountering an error: %s",
1435                         pci_dev->addr.domain, pci_dev->addr.bus,
1436                         pci_dev->addr.devid, pci_dev->addr.function,
1437                         strerror(rte_errno));
1438                 ret = -rte_errno;
1439                 /* Roll back. */
1440                 while (i--) {
1441                         if (!list[i].eth_dev)
1442                                 continue;
1443                         mlx5_dev_close(list[i].eth_dev);
1444                         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1445                                 rte_free(list[i].eth_dev->data->dev_private);
1446                         claim_zero(rte_eth_dev_release_port(list[i].eth_dev));
1447                 }
1448                 /* Restore original error. */
1449                 rte_errno = -ret;
1450         } else {
1451                 ret = 0;
1452         }
1453         return ret;
1454 }
1455
1456 static const struct rte_pci_id mlx5_pci_id_map[] = {
1457         {
1458                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1459                                PCI_DEVICE_ID_MELLANOX_CONNECTX4)
1460         },
1461         {
1462                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1463                                PCI_DEVICE_ID_MELLANOX_CONNECTX4VF)
1464         },
1465         {
1466                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1467                                PCI_DEVICE_ID_MELLANOX_CONNECTX4LX)
1468         },
1469         {
1470                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1471                                PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF)
1472         },
1473         {
1474                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1475                                PCI_DEVICE_ID_MELLANOX_CONNECTX5)
1476         },
1477         {
1478                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1479                                PCI_DEVICE_ID_MELLANOX_CONNECTX5VF)
1480         },
1481         {
1482                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1483                                PCI_DEVICE_ID_MELLANOX_CONNECTX5EX)
1484         },
1485         {
1486                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1487                                PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF)
1488         },
1489         {
1490                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1491                                PCI_DEVICE_ID_MELLANOX_CONNECTX5BF)
1492         },
1493         {
1494                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1495                                PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF)
1496         },
1497         {
1498                 .vendor_id = 0
1499         }
1500 };
1501
1502 static struct rte_pci_driver mlx5_driver = {
1503         .driver = {
1504                 .name = MLX5_DRIVER_NAME
1505         },
1506         .id_table = mlx5_pci_id_map,
1507         .probe = mlx5_pci_probe,
1508         .drv_flags = RTE_PCI_DRV_INTR_LSC | RTE_PCI_DRV_INTR_RMV,
1509 };
1510
1511 #ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS
1512
1513 /**
1514  * Suffix RTE_EAL_PMD_PATH with "-glue".
1515  *
1516  * This function performs a sanity check on RTE_EAL_PMD_PATH before
1517  * suffixing its last component.
1518  *
1519  * @param buf[out]
1520  *   Output buffer, should be large enough otherwise NULL is returned.
1521  * @param size
1522  *   Size of @p out.
1523  *
1524  * @return
1525  *   Pointer to @p buf or @p NULL in case suffix cannot be appended.
1526  */
1527 static char *
1528 mlx5_glue_path(char *buf, size_t size)
1529 {
1530         static const char *const bad[] = { "/", ".", "..", NULL };
1531         const char *path = RTE_EAL_PMD_PATH;
1532         size_t len = strlen(path);
1533         size_t off;
1534         int i;
1535
1536         while (len && path[len - 1] == '/')
1537                 --len;
1538         for (off = len; off && path[off - 1] != '/'; --off)
1539                 ;
1540         for (i = 0; bad[i]; ++i)
1541                 if (!strncmp(path + off, bad[i], (int)(len - off)))
1542                         goto error;
1543         i = snprintf(buf, size, "%.*s-glue", (int)len, path);
1544         if (i == -1 || (size_t)i >= size)
1545                 goto error;
1546         return buf;
1547 error:
1548         DRV_LOG(ERR,
1549                 "unable to append \"-glue\" to last component of"
1550                 " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\"),"
1551                 " please re-configure DPDK");
1552         return NULL;
1553 }
1554
1555 /**
1556  * Initialization routine for run-time dependency on rdma-core.
1557  */
1558 static int
1559 mlx5_glue_init(void)
1560 {
1561         char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")];
1562         const char *path[] = {
1563                 /*
1564                  * A basic security check is necessary before trusting
1565                  * MLX5_GLUE_PATH, which may override RTE_EAL_PMD_PATH.
1566                  */
1567                 (geteuid() == getuid() && getegid() == getgid() ?
1568                  getenv("MLX5_GLUE_PATH") : NULL),
1569                 /*
1570                  * When RTE_EAL_PMD_PATH is set, use its glue-suffixed
1571                  * variant, otherwise let dlopen() look up libraries on its
1572                  * own.
1573                  */
1574                 (*RTE_EAL_PMD_PATH ?
1575                  mlx5_glue_path(glue_path, sizeof(glue_path)) : ""),
1576         };
1577         unsigned int i = 0;
1578         void *handle = NULL;
1579         void **sym;
1580         const char *dlmsg;
1581
1582         while (!handle && i != RTE_DIM(path)) {
1583                 const char *end;
1584                 size_t len;
1585                 int ret;
1586
1587                 if (!path[i]) {
1588                         ++i;
1589                         continue;
1590                 }
1591                 end = strpbrk(path[i], ":;");
1592                 if (!end)
1593                         end = path[i] + strlen(path[i]);
1594                 len = end - path[i];
1595                 ret = 0;
1596                 do {
1597                         char name[ret + 1];
1598
1599                         ret = snprintf(name, sizeof(name), "%.*s%s" MLX5_GLUE,
1600                                        (int)len, path[i],
1601                                        (!len || *(end - 1) == '/') ? "" : "/");
1602                         if (ret == -1)
1603                                 break;
1604                         if (sizeof(name) != (size_t)ret + 1)
1605                                 continue;
1606                         DRV_LOG(DEBUG, "looking for rdma-core glue as \"%s\"",
1607                                 name);
1608                         handle = dlopen(name, RTLD_LAZY);
1609                         break;
1610                 } while (1);
1611                 path[i] = end + 1;
1612                 if (!*end)
1613                         ++i;
1614         }
1615         if (!handle) {
1616                 rte_errno = EINVAL;
1617                 dlmsg = dlerror();
1618                 if (dlmsg)
1619                         DRV_LOG(WARNING, "cannot load glue library: %s", dlmsg);
1620                 goto glue_error;
1621         }
1622         sym = dlsym(handle, "mlx5_glue");
1623         if (!sym || !*sym) {
1624                 rte_errno = EINVAL;
1625                 dlmsg = dlerror();
1626                 if (dlmsg)
1627                         DRV_LOG(ERR, "cannot resolve glue symbol: %s", dlmsg);
1628                 goto glue_error;
1629         }
1630         mlx5_glue = *sym;
1631         return 0;
1632 glue_error:
1633         if (handle)
1634                 dlclose(handle);
1635         DRV_LOG(WARNING,
1636                 "cannot initialize PMD due to missing run-time dependency on"
1637                 " rdma-core libraries (libibverbs, libmlx5)");
1638         return -rte_errno;
1639 }
1640
1641 #endif
1642
1643 /**
1644  * Driver initialization routine.
1645  */
1646 RTE_INIT(rte_mlx5_pmd_init)
1647 {
1648         /* Initialize driver log type. */
1649         mlx5_logtype = rte_log_register("pmd.net.mlx5");
1650         if (mlx5_logtype >= 0)
1651                 rte_log_set_level(mlx5_logtype, RTE_LOG_NOTICE);
1652
1653         /* Build the static tables for Verbs conversion. */
1654         mlx5_set_ptype_table();
1655         mlx5_set_cksum_table();
1656         mlx5_set_swp_types_table();
1657         /*
1658          * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
1659          * huge pages. Calling ibv_fork_init() during init allows
1660          * applications to use fork() safely for purposes other than
1661          * using this PMD, which is not supported in forked processes.
1662          */
1663         setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
1664         /* Match the size of Rx completion entry to the size of a cacheline. */
1665         if (RTE_CACHE_LINE_SIZE == 128)
1666                 setenv("MLX5_CQE_SIZE", "128", 0);
1667         /*
1668          * MLX5_DEVICE_FATAL_CLEANUP tells ibv_destroy functions to
1669          * cleanup all the Verbs resources even when the device was removed.
1670          */
1671         setenv("MLX5_DEVICE_FATAL_CLEANUP", "1", 1);
1672 #ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS
1673         if (mlx5_glue_init())
1674                 return;
1675         assert(mlx5_glue);
1676 #endif
1677 #ifndef NDEBUG
1678         /* Glue structure must not contain any NULL pointers. */
1679         {
1680                 unsigned int i;
1681
1682                 for (i = 0; i != sizeof(*mlx5_glue) / sizeof(void *); ++i)
1683                         assert(((const void *const *)mlx5_glue)[i]);
1684         }
1685 #endif
1686         if (strcmp(mlx5_glue->version, MLX5_GLUE_VERSION)) {
1687                 DRV_LOG(ERR,
1688                         "rdma-core glue \"%s\" mismatch: \"%s\" is required",
1689                         mlx5_glue->version, MLX5_GLUE_VERSION);
1690                 return;
1691         }
1692         mlx5_glue->fork_init();
1693         rte_pci_register(&mlx5_driver);
1694 }
1695
1696 RTE_PMD_EXPORT_NAME(net_mlx5, __COUNTER__);
1697 RTE_PMD_REGISTER_PCI_TABLE(net_mlx5, mlx5_pci_id_map);
1698 RTE_PMD_REGISTER_KMOD_DEP(net_mlx5, "* ib_uverbs & mlx5_core & mlx5_ib");