1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox Technologies, Ltd
16 #include <linux/netlink.h>
17 #include <linux/rtnetlink.h>
20 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
22 #pragma GCC diagnostic ignored "-Wpedantic"
24 #include <infiniband/verbs.h>
26 #pragma GCC diagnostic error "-Wpedantic"
29 #include <rte_malloc.h>
30 #include <rte_ethdev_driver.h>
31 #include <rte_ethdev_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>
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"
50 /* Device parameter to enable RX completion queue compression. */
51 #define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en"
53 /* Device parameter to enable Multi-Packet Rx queue. */
54 #define MLX5_RX_MPRQ_EN "mprq_en"
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"
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"
62 /* Device parameter to set the minimum number of Rx queues to enable MPRQ. */
63 #define MLX5_RXQS_MIN_MPRQ "rxqs_min_mprq"
65 /* Device parameter to configure inline send. */
66 #define MLX5_TXQ_INLINE "txq_inline"
69 * Device parameter to configure the number of TX queues threshold for
70 * enabling inline send.
72 #define MLX5_TXQS_MIN_INLINE "txqs_min_inline"
74 /* Device parameter to enable multi-packet send WQEs. */
75 #define MLX5_TXQ_MPW_EN "txq_mpw_en"
77 /* Device parameter to include 2 dsegs in the title WQEBB. */
78 #define MLX5_TXQ_MPW_HDR_DSEG_EN "txq_mpw_hdr_dseg_en"
80 /* Device parameter to limit the size of inlining packet. */
81 #define MLX5_TXQ_MAX_INLINE_LEN "txq_max_inline_len"
83 /* Device parameter to enable hardware Tx vector. */
84 #define MLX5_TX_VEC_EN "tx_vec_en"
86 /* Device parameter to enable hardware Rx vector. */
87 #define MLX5_RX_VEC_EN "rx_vec_en"
89 /* Allow L3 VXLAN flow creation. */
90 #define MLX5_L3_VXLAN_EN "l3_vxlan_en"
92 /* Activate Netlink support in VF mode. */
93 #define MLX5_VF_NL_EN "vf_nl_en"
95 /* Select port representors to instantiate. */
96 #define MLX5_REPRESENTOR "representor"
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)
103 #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP
104 #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4)
107 static const char *MZ_MLX5_PMD_SHARED_DATA
= "mlx5_pmd_shared_data";
109 /* Shared memory between primary and secondary processes. */
110 struct mlx5_shared_data
*mlx5_shared_data
;
112 /* Spinlock for mlx5_shared_data allocation. */
113 static rte_spinlock_t mlx5_shared_data_lock
= RTE_SPINLOCK_INITIALIZER
;
115 /** Driver-specific log messages type. */
119 * Prepare shared data between primary and secondary process.
122 mlx5_prepare_shared_data(void)
124 const struct rte_memzone
*mz
;
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
),
134 /* Lookup allocated shared memory. */
135 mz
= rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA
);
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
);
145 rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
146 mlx5_mr_mem_event_cb
, NULL
);
148 rte_spinlock_unlock(&mlx5_shared_data_lock
);
152 * Retrieve integer value from environment variable.
155 * Environment variable name.
158 * Integer value, 0 if the variable is not set.
161 mlx5_getenv_int(const char *name
)
163 const char *val
= getenv(name
);
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)).
177 * The size in bytes of the memory to allocate.
179 * A pointer to the callback data.
182 * Allocated buffer, NULL otherwise and rte_errno is set.
185 mlx5_alloc_verbs_buf(size_t size
, void *data
)
187 struct priv
*priv
= data
;
189 size_t alignment
= sysconf(_SC_PAGESIZE
);
190 unsigned int socket
= SOCKET_ID_ANY
;
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
;
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
;
200 socket
= ctrl
->socket
;
202 assert(data
!= NULL
);
203 ret
= rte_malloc_socket(__func__
, size
, alignment
, socket
);
210 * Verbs callback to free a memory.
213 * A pointer to the memory to free.
215 * A pointer to the callback data.
218 mlx5_free_verbs_buf(void *ptr
, void *data __rte_unused
)
220 assert(data
!= NULL
);
225 * DPDK callback to close the device.
227 * Destroy all queues and objects, free memory.
230 * Pointer to Ethernet device structure.
233 mlx5_dev_close(struct rte_eth_dev
*dev
)
235 struct priv
*priv
= dev
->data
->dev_private
;
239 DRV_LOG(DEBUG
, "port %u closing device \"%s\"",
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. */
252 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
253 mlx5_rxq_release(dev
, i
);
257 if (priv
->txqs
!= NULL
) {
258 /* XXX race condition if mlx5_tx_burst() is still running. */
260 for (i
= 0; (i
!= priv
->txqs_n
); ++i
)
261 mlx5_txq_release(dev
, i
);
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
));
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
);
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
);
289 DRV_LOG(WARNING
, "port %u some hash Rx queue still remain",
291 ret
= mlx5_ind_table_ibv_verify(dev
);
293 DRV_LOG(WARNING
, "port %u some indirection table still remain",
295 ret
= mlx5_rxq_ibv_verify(dev
);
297 DRV_LOG(WARNING
, "port %u some Verbs Rx queue still remain",
299 ret
= mlx5_rxq_verify(dev
);
301 DRV_LOG(WARNING
, "port %u some Rx queues still remain",
303 ret
= mlx5_txq_ibv_verify(dev
);
305 DRV_LOG(WARNING
, "port %u some Verbs Tx queue still remain",
307 ret
= mlx5_txq_verify(dev
);
309 DRV_LOG(WARNING
, "port %u some Tx queues still remain",
311 ret
= mlx5_flow_verify(dev
);
313 DRV_LOG(WARNING
, "port %u some flows still remain",
315 if (priv
->domain_id
!= RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID
) {
317 unsigned int i
= mlx5_dev_to_port_id(dev
->device
, NULL
, 0);
320 i
= RTE_MIN(mlx5_dev_to_port_id(dev
->device
, port_id
, i
), i
);
323 rte_eth_devices
[port_id
[i
]].data
->dev_private
;
326 opriv
->domain_id
!= priv
->domain_id
||
327 &rte_eth_devices
[port_id
[i
]] == dev
)
332 claim_zero(rte_eth_switch_domain_free(priv
->domain_id
));
334 memset(priv
, 0, sizeof(*priv
));
335 priv
->domain_id
= RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID
;
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
,
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
,
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
,
437 * Verify and store value for device argument.
440 * Key argument to verify.
442 * Value associated with key.
447 * 0 on success, a negative errno value otherwise and rte_errno is set.
450 mlx5_args_check(const char *key
, const char *val
, void *opaque
)
452 struct mlx5_dev_config
*config
= opaque
;
455 /* No-op, port representors are processed in mlx5_dev_spawn(). */
456 if (!strcmp(MLX5_REPRESENTOR
, key
))
459 tmp
= strtoul(val
, NULL
, 0);
462 DRV_LOG(WARNING
, "%s: \"%s\" is not a valid integer", key
, val
);
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
? config
->mps
: 0;
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
;
494 DRV_LOG(WARNING
, "%s: unknown parameter", key
);
502 * Parse device parameters.
505 * Pointer to device configuration structure.
507 * Device arguments structure.
510 * 0 on success, a negative errno value otherwise and rte_errno is set.
513 mlx5_args(struct mlx5_dev_config
*config
, struct rte_devargs
*devargs
)
515 const char **params
= (const char *[]){
516 MLX5_RXQ_CQE_COMP_EN
,
518 MLX5_RX_MPRQ_LOG_STRIDE_NUM
,
519 MLX5_RX_MPRQ_MAX_MEMCPY_LEN
,
522 MLX5_TXQS_MIN_INLINE
,
524 MLX5_TXQ_MPW_HDR_DSEG_EN
,
525 MLX5_TXQ_MAX_INLINE_LEN
,
533 struct rte_kvargs
*kvlist
;
539 /* Following UGLY cast is done to pass checkpatch. */
540 kvlist
= rte_kvargs_parse(devargs
->args
, params
);
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
);
550 rte_kvargs_free(kvlist
);
555 rte_kvargs_free(kvlist
);
559 static struct rte_pci_driver mlx5_driver
;
562 * Reserved UAR address space for TXQ UAR(hw doorbell) mapping, process
563 * local resource used by both primary and secondary to avoid duplicate
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.
568 static void *uar_base
;
571 find_lower_va_bound(const struct rte_memseg_list
*msl __rte_unused
,
572 const struct rte_memseg
*ms
, void *arg
)
579 *addr
= RTE_MIN(*addr
, ms
->addr
);
585 * Reserve UAR address space for primary process.
588 * Pointer to Ethernet device.
591 * 0 on success, a negative errno value otherwise and rte_errno is set.
594 mlx5_uar_init_primary(struct rte_eth_dev
*dev
)
596 struct priv
*priv
= dev
->data
->dev_private
;
597 void *addr
= (void *)0;
599 if (uar_base
) { /* UAR address space mapped. */
600 priv
->uar_base
= uar_base
;
603 /* find out lower bound of hugepage segments */
604 rte_memseg_walk(find_lower_va_bound
, &addr
);
606 /* keep distance to hugepages to minimize potential conflicts. */
607 addr
= RTE_PTR_SUB(addr
, (uintptr_t)(MLX5_UAR_OFFSET
+ MLX5_UAR_SIZE
));
608 /* anonymous mmap, no real memory consumption. */
609 addr
= mmap(addr
, MLX5_UAR_SIZE
,
610 PROT_NONE
, MAP_PRIVATE
| MAP_ANONYMOUS
, -1, 0);
611 if (addr
== MAP_FAILED
) {
613 "port %u failed to reserve UAR address space, please"
614 " adjust MLX5_UAR_SIZE or try --base-virtaddr",
619 /* Accept either same addr or a new addr returned from mmap if target
622 DRV_LOG(INFO
, "port %u reserved UAR address space: %p",
623 dev
->data
->port_id
, addr
);
624 priv
->uar_base
= addr
; /* for primary and secondary UAR re-mmap. */
625 uar_base
= addr
; /* process local, don't reserve again. */
630 * Reserve UAR address space for secondary process, align with
634 * Pointer to Ethernet device.
637 * 0 on success, a negative errno value otherwise and rte_errno is set.
640 mlx5_uar_init_secondary(struct rte_eth_dev
*dev
)
642 struct priv
*priv
= dev
->data
->dev_private
;
645 assert(priv
->uar_base
);
646 if (uar_base
) { /* already reserved. */
647 assert(uar_base
== priv
->uar_base
);
650 /* anonymous mmap, no real memory consumption. */
651 addr
= mmap(priv
->uar_base
, MLX5_UAR_SIZE
,
652 PROT_NONE
, MAP_PRIVATE
| MAP_ANONYMOUS
, -1, 0);
653 if (addr
== MAP_FAILED
) {
654 DRV_LOG(ERR
, "port %u UAR mmap failed: %p size: %llu",
655 dev
->data
->port_id
, priv
->uar_base
, MLX5_UAR_SIZE
);
659 if (priv
->uar_base
!= addr
) {
661 "port %u UAR address %p size %llu occupied, please"
662 " adjust MLX5_UAR_OFFSET or try EAL parameter"
664 dev
->data
->port_id
, priv
->uar_base
, MLX5_UAR_SIZE
);
668 uar_base
= addr
; /* process local, don't reserve again */
669 DRV_LOG(INFO
, "port %u reserved UAR address space: %p",
670 dev
->data
->port_id
, addr
);
675 * Spawn an Ethernet device from Verbs information.
678 * Backing DPDK device.
682 * If nonzero, enable VF-specific features.
683 * @param[in] switch_info
684 * Switch properties of Ethernet device.
687 * A valid Ethernet device object on success, NULL otherwise and rte_errno
688 * is set. The following error is defined:
690 * EBUSY: device is not supposed to be spawned.
692 static struct rte_eth_dev
*
693 mlx5_dev_spawn(struct rte_device
*dpdk_dev
,
694 struct ibv_device
*ibv_dev
,
696 const struct mlx5_switch_info
*switch_info
)
698 struct ibv_context
*ctx
;
699 struct ibv_device_attr_ex attr
;
700 struct ibv_port_attr port_attr
;
701 struct ibv_pd
*pd
= NULL
;
702 struct mlx5dv_context dv_attr
= { .comp_mask
= 0 };
703 struct mlx5_dev_config config
= {
708 .txq_inline
= MLX5_ARG_UNSET
,
709 .txqs_inline
= MLX5_ARG_UNSET
,
710 .inline_max_packet_sz
= MLX5_ARG_UNSET
,
714 .stride_num_n
= MLX5_MPRQ_STRIDE_NUM_N
,
715 .max_memcpy_len
= MLX5_MPRQ_MEMCPY_DEFAULT_LEN
,
716 .min_rxqs_num
= MLX5_MPRQ_MIN_RXQS
,
719 struct rte_eth_dev
*eth_dev
= NULL
;
720 struct priv
*priv
= NULL
;
723 unsigned int cqe_comp
;
724 unsigned int tunnel_en
= 0;
725 unsigned int mpls_en
= 0;
726 unsigned int swp
= 0;
727 unsigned int mprq
= 0;
728 unsigned int mprq_min_stride_size_n
= 0;
729 unsigned int mprq_max_stride_size_n
= 0;
730 unsigned int mprq_min_stride_num_n
= 0;
731 unsigned int mprq_max_stride_num_n
= 0;
732 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
733 struct ibv_counter_set_description cs_desc
= { .counter_type
= 0 };
735 struct ether_addr mac
;
736 char name
[RTE_ETH_NAME_MAX_LEN
];
737 int own_domain_id
= 0;
740 /* Determine if this port representor is supposed to be spawned. */
741 if (switch_info
->representor
&& dpdk_dev
->devargs
) {
742 struct rte_eth_devargs eth_da
;
744 err
= rte_eth_devargs_parse(dpdk_dev
->devargs
->args
, ð_da
);
747 DRV_LOG(ERR
, "failed to process device arguments: %s",
748 strerror(rte_errno
));
751 for (i
= 0; i
< eth_da
.nb_representor_ports
; ++i
)
752 if (eth_da
.representor_ports
[i
] ==
753 (uint16_t)switch_info
->port_name
)
755 if (i
== eth_da
.nb_representor_ports
) {
760 /* Prepare shared data between primary and secondary process. */
761 mlx5_prepare_shared_data();
763 ctx
= mlx5_glue
->open_device(ibv_dev
);
765 rte_errno
= errno
? errno
: ENODEV
;
768 #ifdef HAVE_IBV_MLX5_MOD_SWP
769 dv_attr
.comp_mask
|= MLX5DV_CONTEXT_MASK_SWP
;
772 * Multi-packet send is supported by ConnectX-4 Lx PF as well
773 * as all ConnectX-5 devices.
775 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
776 dv_attr
.comp_mask
|= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS
;
778 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
779 dv_attr
.comp_mask
|= MLX5DV_CONTEXT_MASK_STRIDING_RQ
;
781 mlx5_glue
->dv_query_device(ctx
, &dv_attr
);
782 if (dv_attr
.flags
& MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED
) {
783 if (dv_attr
.flags
& MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW
) {
784 DRV_LOG(DEBUG
, "enhanced MPW is supported");
785 mps
= MLX5_MPW_ENHANCED
;
787 DRV_LOG(DEBUG
, "MPW is supported");
791 DRV_LOG(DEBUG
, "MPW isn't supported");
792 mps
= MLX5_MPW_DISABLED
;
795 #ifdef HAVE_IBV_MLX5_MOD_SWP
796 if (dv_attr
.comp_mask
& MLX5DV_CONTEXT_MASK_SWP
)
797 swp
= dv_attr
.sw_parsing_caps
.sw_parsing_offloads
;
798 DRV_LOG(DEBUG
, "SWP support: %u", swp
);
801 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
802 if (dv_attr
.comp_mask
& MLX5DV_CONTEXT_MASK_STRIDING_RQ
) {
803 struct mlx5dv_striding_rq_caps mprq_caps
=
804 dv_attr
.striding_rq_caps
;
806 DRV_LOG(DEBUG
, "\tmin_single_stride_log_num_of_bytes: %d",
807 mprq_caps
.min_single_stride_log_num_of_bytes
);
808 DRV_LOG(DEBUG
, "\tmax_single_stride_log_num_of_bytes: %d",
809 mprq_caps
.max_single_stride_log_num_of_bytes
);
810 DRV_LOG(DEBUG
, "\tmin_single_wqe_log_num_of_strides: %d",
811 mprq_caps
.min_single_wqe_log_num_of_strides
);
812 DRV_LOG(DEBUG
, "\tmax_single_wqe_log_num_of_strides: %d",
813 mprq_caps
.max_single_wqe_log_num_of_strides
);
814 DRV_LOG(DEBUG
, "\tsupported_qpts: %d",
815 mprq_caps
.supported_qpts
);
816 DRV_LOG(DEBUG
, "device supports Multi-Packet RQ");
818 mprq_min_stride_size_n
=
819 mprq_caps
.min_single_stride_log_num_of_bytes
;
820 mprq_max_stride_size_n
=
821 mprq_caps
.max_single_stride_log_num_of_bytes
;
822 mprq_min_stride_num_n
=
823 mprq_caps
.min_single_wqe_log_num_of_strides
;
824 mprq_max_stride_num_n
=
825 mprq_caps
.max_single_wqe_log_num_of_strides
;
826 config
.mprq
.stride_num_n
= RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N
,
827 mprq_min_stride_num_n
);
830 if (RTE_CACHE_LINE_SIZE
== 128 &&
831 !(dv_attr
.flags
& MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP
))
835 config
.cqe_comp
= cqe_comp
;
836 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
837 if (dv_attr
.comp_mask
& MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS
) {
838 tunnel_en
= ((dv_attr
.tunnel_offloads_caps
&
839 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN
) &&
840 (dv_attr
.tunnel_offloads_caps
&
841 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE
));
843 DRV_LOG(DEBUG
, "tunnel offloading is %ssupported",
844 tunnel_en
? "" : "not ");
847 "tunnel offloading disabled due to old OFED/rdma-core version");
849 config
.tunnel_en
= tunnel_en
;
850 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
851 mpls_en
= ((dv_attr
.tunnel_offloads_caps
&
852 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE
) &&
853 (dv_attr
.tunnel_offloads_caps
&
854 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP
));
855 DRV_LOG(DEBUG
, "MPLS over GRE/UDP tunnel offloading is %ssupported",
856 mpls_en
? "" : "not ");
858 DRV_LOG(WARNING
, "MPLS over GRE/UDP tunnel offloading disabled due to"
859 " old OFED/rdma-core version or firmware configuration");
861 config
.mpls_en
= mpls_en
;
862 err
= mlx5_glue
->query_device_ex(ctx
, NULL
, &attr
);
864 DEBUG("ibv_query_device_ex() failed");
867 if (!switch_info
->representor
)
868 rte_strlcpy(name
, dpdk_dev
->name
, sizeof(name
));
870 snprintf(name
, sizeof(name
), "%s_representor_%u",
871 dpdk_dev
->name
, switch_info
->port_name
);
872 DRV_LOG(DEBUG
, "naming Ethernet device \"%s\"", name
);
873 if (rte_eal_process_type() == RTE_PROC_SECONDARY
) {
874 eth_dev
= rte_eth_dev_attach_secondary(name
);
875 if (eth_dev
== NULL
) {
876 DRV_LOG(ERR
, "can not attach rte ethdev");
881 eth_dev
->device
= dpdk_dev
;
882 eth_dev
->dev_ops
= &mlx5_dev_sec_ops
;
883 err
= mlx5_uar_init_secondary(eth_dev
);
888 /* Receive command fd from primary process */
889 err
= mlx5_socket_connect(eth_dev
);
894 /* Remap UAR for Tx queues. */
895 err
= mlx5_tx_uar_remap(eth_dev
, err
);
901 * Ethdev pointer is still required as input since
902 * the primary device is not accessible from the
905 eth_dev
->rx_pkt_burst
= mlx5_select_rx_function(eth_dev
);
906 eth_dev
->tx_pkt_burst
= mlx5_select_tx_function(eth_dev
);
907 claim_zero(mlx5_glue
->close_device(ctx
));
910 /* Check port status. */
911 err
= mlx5_glue
->query_port(ctx
, 1, &port_attr
);
913 DRV_LOG(ERR
, "port query failed: %s", strerror(err
));
916 if (port_attr
.link_layer
!= IBV_LINK_LAYER_ETHERNET
) {
917 DRV_LOG(ERR
, "port is not configured in Ethernet mode");
921 if (port_attr
.state
!= IBV_PORT_ACTIVE
)
922 DRV_LOG(DEBUG
, "port is not active: \"%s\" (%d)",
923 mlx5_glue
->port_state_str(port_attr
.state
),
925 /* Allocate protection domain. */
926 pd
= mlx5_glue
->alloc_pd(ctx
);
928 DRV_LOG(ERR
, "PD allocation failure");
932 priv
= rte_zmalloc("ethdev private structure",
934 RTE_CACHE_LINE_SIZE
);
936 DRV_LOG(ERR
, "priv allocation failure");
941 strncpy(priv
->ibdev_name
, priv
->ctx
->device
->name
,
942 sizeof(priv
->ibdev_name
));
943 strncpy(priv
->ibdev_path
, priv
->ctx
->device
->ibdev_path
,
944 sizeof(priv
->ibdev_path
));
945 priv
->device_attr
= attr
;
947 priv
->mtu
= ETHER_MTU
;
949 /* Initialize UAR access locks for 32bit implementations. */
950 rte_spinlock_init(&priv
->uar_lock_cq
);
951 for (i
= 0; i
< MLX5_UAR_PAGE_NUM_MAX
; i
++)
952 rte_spinlock_init(&priv
->uar_lock
[i
]);
954 /* Some internal functions rely on Netlink sockets, open them now. */
955 priv
->nl_socket_rdma
= mlx5_nl_init(NETLINK_RDMA
);
956 priv
->nl_socket_route
= mlx5_nl_init(NETLINK_ROUTE
);
958 priv
->representor
= !!switch_info
->representor
;
959 priv
->domain_id
= RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID
;
960 priv
->representor_id
=
961 switch_info
->representor
? switch_info
->port_name
: -1;
963 * Look for sibling devices in order to reuse their switch domain
964 * if any, otherwise allocate one.
966 i
= mlx5_dev_to_port_id(dpdk_dev
, NULL
, 0);
970 i
= RTE_MIN(mlx5_dev_to_port_id(dpdk_dev
, port_id
, i
), i
);
972 const struct priv
*opriv
=
973 rte_eth_devices
[port_id
[i
]].data
->dev_private
;
977 RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID
)
979 priv
->domain_id
= opriv
->domain_id
;
983 if (priv
->domain_id
== RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID
) {
984 err
= rte_eth_switch_domain_alloc(&priv
->domain_id
);
987 DRV_LOG(ERR
, "unable to allocate switch domain: %s",
988 strerror(rte_errno
));
993 err
= mlx5_args(&config
, dpdk_dev
->devargs
);
996 DRV_LOG(ERR
, "failed to process device arguments: %s",
997 strerror(rte_errno
));
1000 config
.hw_csum
= !!(attr
.device_cap_flags_ex
& IBV_DEVICE_RAW_IP_CSUM
);
1001 DRV_LOG(DEBUG
, "checksum offloading is %ssupported",
1002 (config
.hw_csum
? "" : "not "));
1003 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
1004 config
.flow_counter_en
= !!attr
.max_counter_sets
;
1005 mlx5_glue
->describe_counter_set(ctx
, 0, &cs_desc
);
1006 DRV_LOG(DEBUG
, "counter type = %d, num of cs = %ld, attributes = %d",
1007 cs_desc
.counter_type
, cs_desc
.num_of_cs
,
1008 cs_desc
.attributes
);
1010 config
.ind_table_max_size
=
1011 attr
.rss_caps
.max_rwq_indirection_table_size
;
1013 * Remove this check once DPDK supports larger/variable
1014 * indirection tables.
1016 if (config
.ind_table_max_size
> (unsigned int)ETH_RSS_RETA_SIZE_512
)
1017 config
.ind_table_max_size
= ETH_RSS_RETA_SIZE_512
;
1018 DRV_LOG(DEBUG
, "maximum Rx indirection table size is %u",
1019 config
.ind_table_max_size
);
1020 config
.hw_vlan_strip
= !!(attr
.raw_packet_caps
&
1021 IBV_RAW_PACKET_CAP_CVLAN_STRIPPING
);
1022 DRV_LOG(DEBUG
, "VLAN stripping is %ssupported",
1023 (config
.hw_vlan_strip
? "" : "not "));
1024 config
.hw_fcs_strip
= !!(attr
.raw_packet_caps
&
1025 IBV_RAW_PACKET_CAP_SCATTER_FCS
);
1026 DRV_LOG(DEBUG
, "FCS stripping configuration is %ssupported",
1027 (config
.hw_fcs_strip
? "" : "not "));
1028 #ifdef HAVE_IBV_WQ_FLAG_RX_END_PADDING
1029 config
.hw_padding
= !!attr
.rx_pad_end_addr_align
;
1031 DRV_LOG(DEBUG
, "hardware Rx end alignment padding is %ssupported",
1032 (config
.hw_padding
? "" : "not "));
1033 config
.tso
= (attr
.tso_caps
.max_tso
> 0 &&
1034 (attr
.tso_caps
.supported_qpts
&
1035 (1 << IBV_QPT_RAW_PACKET
)));
1037 config
.tso_max_payload_sz
= attr
.tso_caps
.max_tso
;
1038 if (config
.mps
&& !mps
) {
1040 "multi-packet send not supported on this device"
1041 " (" MLX5_TXQ_MPW_EN
")");
1045 DRV_LOG(INFO
, "%sMPS is %s",
1046 config
.mps
== MLX5_MPW_ENHANCED
? "enhanced " : "",
1047 config
.mps
!= MLX5_MPW_DISABLED
? "enabled" : "disabled");
1048 if (config
.cqe_comp
&& !cqe_comp
) {
1049 DRV_LOG(WARNING
, "Rx CQE compression isn't supported");
1050 config
.cqe_comp
= 0;
1052 if (config
.mprq
.enabled
&& mprq
) {
1053 if (config
.mprq
.stride_num_n
> mprq_max_stride_num_n
||
1054 config
.mprq
.stride_num_n
< mprq_min_stride_num_n
) {
1055 config
.mprq
.stride_num_n
=
1056 RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N
,
1057 mprq_min_stride_num_n
);
1059 "the number of strides"
1060 " for Multi-Packet RQ is out of range,"
1061 " setting default value (%u)",
1062 1 << config
.mprq
.stride_num_n
);
1064 config
.mprq
.min_stride_size_n
= mprq_min_stride_size_n
;
1065 config
.mprq
.max_stride_size_n
= mprq_max_stride_size_n
;
1066 } else if (config
.mprq
.enabled
&& !mprq
) {
1067 DRV_LOG(WARNING
, "Multi-Packet RQ isn't supported");
1068 config
.mprq
.enabled
= 0;
1070 eth_dev
= rte_eth_dev_allocate(name
);
1071 if (eth_dev
== NULL
) {
1072 DRV_LOG(ERR
, "can not allocate rte ethdev");
1076 if (priv
->representor
)
1077 eth_dev
->data
->dev_flags
|= RTE_ETH_DEV_REPRESENTOR
;
1078 eth_dev
->data
->dev_private
= priv
;
1079 priv
->dev_data
= eth_dev
->data
;
1080 eth_dev
->data
->mac_addrs
= priv
->mac
;
1081 eth_dev
->device
= dpdk_dev
;
1082 eth_dev
->device
->driver
= &mlx5_driver
.driver
;
1083 err
= mlx5_uar_init_primary(eth_dev
);
1088 /* Configure the first MAC address by default. */
1089 if (mlx5_get_mac(eth_dev
, &mac
.addr_bytes
)) {
1091 "port %u cannot get MAC address, is mlx5_en"
1092 " loaded? (errno: %s)",
1093 eth_dev
->data
->port_id
, strerror(rte_errno
));
1098 "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
1099 eth_dev
->data
->port_id
,
1100 mac
.addr_bytes
[0], mac
.addr_bytes
[1],
1101 mac
.addr_bytes
[2], mac
.addr_bytes
[3],
1102 mac
.addr_bytes
[4], mac
.addr_bytes
[5]);
1105 char ifname
[IF_NAMESIZE
];
1107 if (mlx5_get_ifname(eth_dev
, &ifname
) == 0)
1108 DRV_LOG(DEBUG
, "port %u ifname is \"%s\"",
1109 eth_dev
->data
->port_id
, ifname
);
1111 DRV_LOG(DEBUG
, "port %u ifname is unknown",
1112 eth_dev
->data
->port_id
);
1115 /* Get actual MTU if possible. */
1116 err
= mlx5_get_mtu(eth_dev
, &priv
->mtu
);
1121 DRV_LOG(DEBUG
, "port %u MTU is %u", eth_dev
->data
->port_id
,
1123 /* Initialize burst functions to prevent crashes before link-up. */
1124 eth_dev
->rx_pkt_burst
= removed_rx_burst
;
1125 eth_dev
->tx_pkt_burst
= removed_tx_burst
;
1126 eth_dev
->dev_ops
= &mlx5_dev_ops
;
1127 /* Register MAC address. */
1128 claim_zero(mlx5_mac_addr_add(eth_dev
, &mac
, 0, 0));
1129 if (vf
&& config
.vf_nl_en
)
1130 mlx5_nl_mac_addr_sync(eth_dev
);
1131 priv
->mnl_socket
= mlx5_nl_flow_socket_create();
1132 if (!priv
->mnl_socket
) {
1135 "flow rules relying on switch offloads will not be"
1136 " supported: cannot open libmnl socket: %s",
1137 strerror(rte_errno
));
1139 struct rte_flow_error error
;
1140 unsigned int ifindex
= mlx5_ifindex(eth_dev
);
1145 "cannot retrieve network interface index";
1147 err
= mlx5_nl_flow_init(priv
->mnl_socket
, ifindex
,
1152 "flow rules relying on switch offloads will"
1153 " not be supported: %s: %s",
1154 error
.message
, strerror(rte_errno
));
1155 mlx5_nl_flow_socket_destroy(priv
->mnl_socket
);
1156 priv
->mnl_socket
= NULL
;
1159 TAILQ_INIT(&priv
->flows
);
1160 TAILQ_INIT(&priv
->ctrl_flows
);
1161 /* Hint libmlx5 to use PMD allocator for data plane resources */
1162 struct mlx5dv_ctx_allocators alctr
= {
1163 .alloc
= &mlx5_alloc_verbs_buf
,
1164 .free
= &mlx5_free_verbs_buf
,
1167 mlx5_glue
->dv_set_context_attr(ctx
, MLX5DV_CTX_ATTR_BUF_ALLOCATORS
,
1168 (void *)((uintptr_t)&alctr
));
1169 /* Bring Ethernet device up. */
1170 DRV_LOG(DEBUG
, "port %u forcing Ethernet interface up",
1171 eth_dev
->data
->port_id
);
1172 mlx5_set_link_up(eth_dev
);
1174 * Even though the interrupt handler is not installed yet,
1175 * interrupts will still trigger on the asyn_fd from
1176 * Verbs context returned by ibv_open_device().
1178 mlx5_link_update(eth_dev
, 0);
1179 /* Store device configuration on private structure. */
1180 priv
->config
= config
;
1181 /* Supported Verbs flow priority number detection. */
1182 err
= mlx5_flow_discover_priorities(eth_dev
);
1185 priv
->config
.flow_prio
= err
;
1187 * Once the device is added to the list of memory event
1188 * callback, its global MR cache table cannot be expanded
1189 * on the fly because of deadlock. If it overflows, lookup
1190 * should be done by searching MR list linearly, which is slow.
1192 err
= mlx5_mr_btree_init(&priv
->mr
.cache
,
1193 MLX5_MR_BTREE_CACHE_N
* 2,
1194 eth_dev
->device
->numa_node
);
1199 /* Add device to memory callback list. */
1200 rte_rwlock_write_lock(&mlx5_shared_data
->mem_event_rwlock
);
1201 LIST_INSERT_HEAD(&mlx5_shared_data
->mem_event_cb_list
,
1202 priv
, mem_event_cb
);
1203 rte_rwlock_write_unlock(&mlx5_shared_data
->mem_event_rwlock
);
1207 if (priv
->nl_socket_route
>= 0)
1208 close(priv
->nl_socket_route
);
1209 if (priv
->nl_socket_rdma
>= 0)
1210 close(priv
->nl_socket_rdma
);
1211 if (priv
->mnl_socket
)
1212 mlx5_nl_flow_socket_destroy(priv
->mnl_socket
);
1214 claim_zero(rte_eth_switch_domain_free(priv
->domain_id
));
1218 claim_zero(mlx5_glue
->dealloc_pd(pd
));
1220 rte_eth_dev_release_port(eth_dev
);
1222 claim_zero(mlx5_glue
->close_device(ctx
));
1228 /** Data associated with devices to spawn. */
1229 struct mlx5_dev_spawn_data
{
1230 unsigned int ifindex
; /**< Network interface index. */
1231 struct mlx5_switch_info info
; /**< Switch information. */
1232 struct ibv_device
*ibv_dev
; /**< Associated IB device. */
1233 struct rte_eth_dev
*eth_dev
; /**< Associated Ethernet device. */
1237 * Comparison callback to sort device data.
1239 * This is meant to be used with qsort().
1242 * Pointer to pointer to first data object.
1244 * Pointer to pointer to second data object.
1247 * 0 if both objects are equal, less than 0 if the first argument is less
1248 * than the second, greater than 0 otherwise.
1251 mlx5_dev_spawn_data_cmp(const void *a
, const void *b
)
1253 const struct mlx5_switch_info
*si_a
=
1254 &((const struct mlx5_dev_spawn_data
*)a
)->info
;
1255 const struct mlx5_switch_info
*si_b
=
1256 &((const struct mlx5_dev_spawn_data
*)b
)->info
;
1259 /* Master device first. */
1260 ret
= si_b
->master
- si_a
->master
;
1263 /* Then representor devices. */
1264 ret
= si_b
->representor
- si_a
->representor
;
1267 /* Unidentified devices come last in no specific order. */
1268 if (!si_a
->representor
)
1270 /* Order representors by name. */
1271 return si_a
->port_name
- si_b
->port_name
;
1275 * DPDK callback to register a PCI device.
1277 * This function spawns Ethernet devices out of a given PCI device.
1279 * @param[in] pci_drv
1280 * PCI driver structure (mlx5_driver).
1281 * @param[in] pci_dev
1282 * PCI device information.
1285 * 0 on success, a negative errno value otherwise and rte_errno is set.
1288 mlx5_pci_probe(struct rte_pci_driver
*pci_drv __rte_unused
,
1289 struct rte_pci_device
*pci_dev
)
1291 struct ibv_device
**ibv_list
;
1296 assert(pci_drv
== &mlx5_driver
);
1298 ibv_list
= mlx5_glue
->get_device_list(&ret
);
1300 rte_errno
= errno
? errno
: ENOSYS
;
1301 DRV_LOG(ERR
, "cannot list devices, is ib_uverbs loaded?");
1305 struct ibv_device
*ibv_match
[ret
+ 1];
1308 struct rte_pci_addr pci_addr
;
1310 DRV_LOG(DEBUG
, "checking device \"%s\"", ibv_list
[ret
]->name
);
1311 if (mlx5_ibv_device_to_pci_addr(ibv_list
[ret
], &pci_addr
))
1313 if (pci_dev
->addr
.domain
!= pci_addr
.domain
||
1314 pci_dev
->addr
.bus
!= pci_addr
.bus
||
1315 pci_dev
->addr
.devid
!= pci_addr
.devid
||
1316 pci_dev
->addr
.function
!= pci_addr
.function
)
1318 DRV_LOG(INFO
, "PCI information matches for device \"%s\"",
1319 ibv_list
[ret
]->name
);
1320 ibv_match
[n
++] = ibv_list
[ret
];
1322 ibv_match
[n
] = NULL
;
1324 struct mlx5_dev_spawn_data list
[n
];
1325 int nl_route
= n
? mlx5_nl_init(NETLINK_ROUTE
) : -1;
1326 int nl_rdma
= n
? mlx5_nl_init(NETLINK_RDMA
) : -1;
1331 * The existence of several matching entries (n > 1) means port
1332 * representors have been instantiated. No existing Verbs call nor
1333 * /sys entries can tell them apart, this can only be done through
1334 * Netlink calls assuming kernel drivers are recent enough to
1337 * In the event of identification failure through Netlink, try again
1338 * through sysfs, then either:
1340 * 1. No device matches (n == 0), complain and bail out.
1341 * 2. A single IB device matches (n == 1) and is not a representor,
1342 * assume no switch support.
1343 * 3. Otherwise no safe assumptions can be made; complain louder and
1346 for (i
= 0; i
!= n
; ++i
) {
1347 list
[i
].ibv_dev
= ibv_match
[i
];
1348 list
[i
].eth_dev
= NULL
;
1350 list
[i
].ifindex
= 0;
1352 list
[i
].ifindex
= mlx5_nl_ifindex
1353 (nl_rdma
, list
[i
].ibv_dev
->name
);
1356 mlx5_nl_switch_info(nl_route
, list
[i
].ifindex
,
1358 ((!list
[i
].info
.representor
&& !list
[i
].info
.master
) &&
1359 mlx5_sysfs_switch_info(list
[i
].ifindex
, &list
[i
].info
))) {
1360 list
[i
].ifindex
= 0;
1361 memset(&list
[i
].info
, 0, sizeof(list
[i
].info
));
1369 /* Count unidentified devices. */
1370 for (u
= 0, i
= 0; i
!= n
; ++i
)
1371 if (!list
[i
].info
.master
&& !list
[i
].info
.representor
)
1374 if (n
== 1 && u
== 1) {
1376 DRV_LOG(INFO
, "no switch support detected");
1380 "unable to tell which of the matching devices"
1381 " is the master (lack of kernel support?)");
1386 * Sort list to probe devices in natural order for users convenience
1387 * (i.e. master first, then representors from lowest to highest ID).
1390 qsort(list
, n
, sizeof(*list
), mlx5_dev_spawn_data_cmp
);
1391 switch (pci_dev
->id
.device_id
) {
1392 case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF
:
1393 case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF
:
1394 case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF
:
1395 case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF
:
1401 for (i
= 0; i
!= n
; ++i
) {
1404 list
[i
].eth_dev
= mlx5_dev_spawn
1405 (&pci_dev
->device
, list
[i
].ibv_dev
, vf
, &list
[i
].info
);
1406 if (!list
[i
].eth_dev
) {
1407 if (rte_errno
!= EBUSY
)
1409 /* Device is disabled, ignore it. */
1412 restore
= list
[i
].eth_dev
->data
->dev_flags
;
1413 rte_eth_copy_pci_info(list
[i
].eth_dev
, pci_dev
);
1414 /* Restore non-PCI flags cleared by the above call. */
1415 list
[i
].eth_dev
->data
->dev_flags
|= restore
;
1416 rte_eth_dev_probing_finish(list
[i
].eth_dev
);
1418 mlx5_glue
->free_device_list(ibv_list
);
1421 "no Verbs device matches PCI device " PCI_PRI_FMT
","
1422 " are kernel drivers loaded?",
1423 pci_dev
->addr
.domain
, pci_dev
->addr
.bus
,
1424 pci_dev
->addr
.devid
, pci_dev
->addr
.function
);
1427 } else if (i
!= n
) {
1429 "probe of PCI device " PCI_PRI_FMT
" aborted after"
1430 " encountering an error: %s",
1431 pci_dev
->addr
.domain
, pci_dev
->addr
.bus
,
1432 pci_dev
->addr
.devid
, pci_dev
->addr
.function
,
1433 strerror(rte_errno
));
1437 if (!list
[i
].eth_dev
)
1439 mlx5_dev_close(list
[i
].eth_dev
);
1440 if (rte_eal_process_type() == RTE_PROC_PRIMARY
)
1441 rte_free(list
[i
].eth_dev
->data
->dev_private
);
1442 claim_zero(rte_eth_dev_release_port(list
[i
].eth_dev
));
1444 /* Restore original error. */
1452 static const struct rte_pci_id mlx5_pci_id_map
[] = {
1454 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1455 PCI_DEVICE_ID_MELLANOX_CONNECTX4
)
1458 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1459 PCI_DEVICE_ID_MELLANOX_CONNECTX4VF
)
1462 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1463 PCI_DEVICE_ID_MELLANOX_CONNECTX4LX
)
1466 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1467 PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF
)
1470 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1471 PCI_DEVICE_ID_MELLANOX_CONNECTX5
)
1474 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1475 PCI_DEVICE_ID_MELLANOX_CONNECTX5VF
)
1478 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1479 PCI_DEVICE_ID_MELLANOX_CONNECTX5EX
)
1482 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1483 PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF
)
1486 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
1487 PCI_DEVICE_ID_MELLANOX_CONNECTX5BF
)
1494 static struct rte_pci_driver mlx5_driver
= {
1496 .name
= MLX5_DRIVER_NAME
1498 .id_table
= mlx5_pci_id_map
,
1499 .probe
= mlx5_pci_probe
,
1500 .drv_flags
= RTE_PCI_DRV_INTR_LSC
| RTE_PCI_DRV_INTR_RMV
,
1503 #ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS
1506 * Suffix RTE_EAL_PMD_PATH with "-glue".
1508 * This function performs a sanity check on RTE_EAL_PMD_PATH before
1509 * suffixing its last component.
1512 * Output buffer, should be large enough otherwise NULL is returned.
1517 * Pointer to @p buf or @p NULL in case suffix cannot be appended.
1520 mlx5_glue_path(char *buf
, size_t size
)
1522 static const char *const bad
[] = { "/", ".", "..", NULL
};
1523 const char *path
= RTE_EAL_PMD_PATH
;
1524 size_t len
= strlen(path
);
1528 while (len
&& path
[len
- 1] == '/')
1530 for (off
= len
; off
&& path
[off
- 1] != '/'; --off
)
1532 for (i
= 0; bad
[i
]; ++i
)
1533 if (!strncmp(path
+ off
, bad
[i
], (int)(len
- off
)))
1535 i
= snprintf(buf
, size
, "%.*s-glue", (int)len
, path
);
1536 if (i
== -1 || (size_t)i
>= size
)
1541 "unable to append \"-glue\" to last component of"
1542 " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH
"\"),"
1543 " please re-configure DPDK");
1548 * Initialization routine for run-time dependency on rdma-core.
1551 mlx5_glue_init(void)
1553 char glue_path
[sizeof(RTE_EAL_PMD_PATH
) - 1 + sizeof("-glue")];
1554 const char *path
[] = {
1556 * A basic security check is necessary before trusting
1557 * MLX5_GLUE_PATH, which may override RTE_EAL_PMD_PATH.
1559 (geteuid() == getuid() && getegid() == getgid() ?
1560 getenv("MLX5_GLUE_PATH") : NULL
),
1562 * When RTE_EAL_PMD_PATH is set, use its glue-suffixed
1563 * variant, otherwise let dlopen() look up libraries on its
1566 (*RTE_EAL_PMD_PATH
?
1567 mlx5_glue_path(glue_path
, sizeof(glue_path
)) : ""),
1570 void *handle
= NULL
;
1574 while (!handle
&& i
!= RTE_DIM(path
)) {
1583 end
= strpbrk(path
[i
], ":;");
1585 end
= path
[i
] + strlen(path
[i
]);
1586 len
= end
- path
[i
];
1591 ret
= snprintf(name
, sizeof(name
), "%.*s%s" MLX5_GLUE
,
1593 (!len
|| *(end
- 1) == '/') ? "" : "/");
1596 if (sizeof(name
) != (size_t)ret
+ 1)
1598 DRV_LOG(DEBUG
, "looking for rdma-core glue as \"%s\"",
1600 handle
= dlopen(name
, RTLD_LAZY
);
1611 DRV_LOG(WARNING
, "cannot load glue library: %s", dlmsg
);
1614 sym
= dlsym(handle
, "mlx5_glue");
1615 if (!sym
|| !*sym
) {
1619 DRV_LOG(ERR
, "cannot resolve glue symbol: %s", dlmsg
);
1628 "cannot initialize PMD due to missing run-time dependency on"
1629 " rdma-core libraries (libibverbs, libmlx5)");
1636 * Driver initialization routine.
1638 RTE_INIT(rte_mlx5_pmd_init
)
1640 /* Initialize driver log type. */
1641 mlx5_logtype
= rte_log_register("pmd.net.mlx5");
1642 if (mlx5_logtype
>= 0)
1643 rte_log_set_level(mlx5_logtype
, RTE_LOG_NOTICE
);
1645 /* Build the static tables for Verbs conversion. */
1646 mlx5_set_ptype_table();
1647 mlx5_set_cksum_table();
1648 mlx5_set_swp_types_table();
1650 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
1651 * huge pages. Calling ibv_fork_init() during init allows
1652 * applications to use fork() safely for purposes other than
1653 * using this PMD, which is not supported in forked processes.
1655 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
1656 /* Match the size of Rx completion entry to the size of a cacheline. */
1657 if (RTE_CACHE_LINE_SIZE
== 128)
1658 setenv("MLX5_CQE_SIZE", "128", 0);
1660 * MLX5_DEVICE_FATAL_CLEANUP tells ibv_destroy functions to
1661 * cleanup all the Verbs resources even when the device was removed.
1663 setenv("MLX5_DEVICE_FATAL_CLEANUP", "1", 1);
1664 #ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS
1665 if (mlx5_glue_init())
1670 /* Glue structure must not contain any NULL pointers. */
1674 for (i
= 0; i
!= sizeof(*mlx5_glue
) / sizeof(void *); ++i
)
1675 assert(((const void *const *)mlx5_glue
)[i
]);
1678 if (strcmp(mlx5_glue
->version
, MLX5_GLUE_VERSION
)) {
1680 "rdma-core glue \"%s\" mismatch: \"%s\" is required",
1681 mlx5_glue
->version
, MLX5_GLUE_VERSION
);
1684 mlx5_glue
->fork_init();
1685 rte_pci_register(&mlx5_driver
);
1688 RTE_PMD_EXPORT_NAME(net_mlx5
, __COUNTER__
);
1689 RTE_PMD_REGISTER_PCI_TABLE(net_mlx5
, mlx5_pci_id_map
);
1690 RTE_PMD_REGISTER_KMOD_DEP(net_mlx5
, "* ib_uverbs & mlx5_core & mlx5_ib");