1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox.
18 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
20 #pragma GCC diagnostic ignored "-Wpedantic"
22 #include <infiniband/verbs.h>
24 #pragma GCC diagnostic error "-Wpedantic"
27 #include <rte_malloc.h>
28 #include <rte_ethdev_driver.h>
29 #include <rte_ethdev_pci.h>
31 #include <rte_bus_pci.h>
32 #include <rte_common.h>
33 #include <rte_config.h>
34 #include <rte_eal_memconfig.h>
35 #include <rte_kvargs.h>
38 #include "mlx5_utils.h"
39 #include "mlx5_rxtx.h"
40 #include "mlx5_autoconf.h"
41 #include "mlx5_defs.h"
42 #include "mlx5_glue.h"
44 /* Device parameter to enable RX completion queue compression. */
45 #define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en"
47 /* Device parameter to configure inline send. */
48 #define MLX5_TXQ_INLINE "txq_inline"
51 * Device parameter to configure the number of TX queues threshold for
52 * enabling inline send.
54 #define MLX5_TXQS_MIN_INLINE "txqs_min_inline"
56 /* Device parameter to enable multi-packet send WQEs. */
57 #define MLX5_TXQ_MPW_EN "txq_mpw_en"
59 /* Device parameter to include 2 dsegs in the title WQEBB. */
60 #define MLX5_TXQ_MPW_HDR_DSEG_EN "txq_mpw_hdr_dseg_en"
62 /* Device parameter to limit the size of inlining packet. */
63 #define MLX5_TXQ_MAX_INLINE_LEN "txq_max_inline_len"
65 /* Device parameter to enable hardware Tx vector. */
66 #define MLX5_TX_VEC_EN "tx_vec_en"
68 /* Device parameter to enable hardware Rx vector. */
69 #define MLX5_RX_VEC_EN "rx_vec_en"
71 #ifndef HAVE_IBV_MLX5_MOD_MPW
72 #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2)
73 #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3)
76 #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP
77 #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4)
81 * Retrieve integer value from environment variable.
84 * Environment variable name.
87 * Integer value, 0 if the variable is not set.
90 mlx5_getenv_int(const char *name)
92 const char *val = getenv(name);
100 * Verbs callback to allocate a memory. This function should allocate the space
101 * according to the size provided residing inside a huge page.
102 * Please note that all allocation must respect the alignment from libmlx5
103 * (i.e. currently sysconf(_SC_PAGESIZE)).
106 * The size in bytes of the memory to allocate.
108 * A pointer to the callback data.
111 * a pointer to the allocate space.
114 mlx5_alloc_verbs_buf(size_t size, void *data)
116 struct priv *priv = data;
118 size_t alignment = sysconf(_SC_PAGESIZE);
119 unsigned int socket = SOCKET_ID_ANY;
121 if (priv->verbs_alloc_ctx.type == MLX5_VERBS_ALLOC_TYPE_TX_QUEUE) {
122 const struct mlx5_txq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
124 socket = ctrl->socket;
125 } else if (priv->verbs_alloc_ctx.type ==
126 MLX5_VERBS_ALLOC_TYPE_RX_QUEUE) {
127 const struct mlx5_rxq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
129 socket = ctrl->socket;
131 assert(data != NULL);
132 ret = rte_malloc_socket(__func__, size, alignment, socket);
133 DEBUG("Extern alloc size: %lu, align: %lu: %p", size, alignment, ret);
138 * Verbs callback to free a memory.
141 * A pointer to the memory to free.
143 * A pointer to the callback data.
146 mlx5_free_verbs_buf(void *ptr, void *data __rte_unused)
148 assert(data != NULL);
149 DEBUG("Extern free request: %p", ptr);
154 * DPDK callback to close the device.
156 * Destroy all queues and objects, free memory.
159 * Pointer to Ethernet device structure.
162 mlx5_dev_close(struct rte_eth_dev *dev)
164 struct priv *priv = dev->data->dev_private;
169 DEBUG("%p: closing device \"%s\"",
171 ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
172 /* In case mlx5_dev_stop() has not been called. */
173 priv_dev_interrupt_handler_uninstall(priv, dev);
174 priv_dev_traffic_disable(priv, dev);
175 /* Prevent crashes when queues are still in use. */
176 dev->rx_pkt_burst = removed_rx_burst;
177 dev->tx_pkt_burst = removed_tx_burst;
178 if (priv->rxqs != NULL) {
179 /* XXX race condition if mlx5_rx_burst() is still running. */
181 for (i = 0; (i != priv->rxqs_n); ++i)
182 mlx5_priv_rxq_release(priv, i);
186 if (priv->txqs != NULL) {
187 /* XXX race condition if mlx5_tx_burst() is still running. */
189 for (i = 0; (i != priv->txqs_n); ++i)
190 mlx5_priv_txq_release(priv, i);
194 if (priv->pd != NULL) {
195 assert(priv->ctx != NULL);
196 claim_zero(mlx5_glue->dealloc_pd(priv->pd));
197 claim_zero(mlx5_glue->close_device(priv->ctx));
199 assert(priv->ctx == NULL);
200 if (priv->rss_conf.rss_key != NULL)
201 rte_free(priv->rss_conf.rss_key);
202 if (priv->reta_idx != NULL)
203 rte_free(priv->reta_idx);
204 if (priv->primary_socket)
205 priv_socket_uninit(priv);
206 ret = mlx5_priv_hrxq_ibv_verify(priv);
208 WARN("%p: some Hash Rx queue still remain", (void *)priv);
209 ret = mlx5_priv_ind_table_ibv_verify(priv);
211 WARN("%p: some Indirection table still remain", (void *)priv);
212 ret = mlx5_priv_rxq_ibv_verify(priv);
214 WARN("%p: some Verbs Rx queue still remain", (void *)priv);
215 ret = mlx5_priv_rxq_verify(priv);
217 WARN("%p: some Rx Queues still remain", (void *)priv);
218 ret = mlx5_priv_txq_ibv_verify(priv);
220 WARN("%p: some Verbs Tx queue still remain", (void *)priv);
221 ret = mlx5_priv_txq_verify(priv);
223 WARN("%p: some Tx Queues still remain", (void *)priv);
224 ret = priv_flow_verify(priv);
226 WARN("%p: some flows still remain", (void *)priv);
227 ret = priv_mr_verify(priv);
229 WARN("%p: some Memory Region still remain", (void *)priv);
231 memset(priv, 0, sizeof(*priv));
234 const struct eth_dev_ops mlx5_dev_ops = {
235 .dev_configure = mlx5_dev_configure,
236 .dev_start = mlx5_dev_start,
237 .dev_stop = mlx5_dev_stop,
238 .dev_set_link_down = mlx5_set_link_down,
239 .dev_set_link_up = mlx5_set_link_up,
240 .dev_close = mlx5_dev_close,
241 .promiscuous_enable = mlx5_promiscuous_enable,
242 .promiscuous_disable = mlx5_promiscuous_disable,
243 .allmulticast_enable = mlx5_allmulticast_enable,
244 .allmulticast_disable = mlx5_allmulticast_disable,
245 .link_update = mlx5_link_update,
246 .stats_get = mlx5_stats_get,
247 .stats_reset = mlx5_stats_reset,
248 .xstats_get = mlx5_xstats_get,
249 .xstats_reset = mlx5_xstats_reset,
250 .xstats_get_names = mlx5_xstats_get_names,
251 .dev_infos_get = mlx5_dev_infos_get,
252 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
253 .vlan_filter_set = mlx5_vlan_filter_set,
254 .rx_queue_setup = mlx5_rx_queue_setup,
255 .tx_queue_setup = mlx5_tx_queue_setup,
256 .rx_queue_release = mlx5_rx_queue_release,
257 .tx_queue_release = mlx5_tx_queue_release,
258 .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
259 .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
260 .mac_addr_remove = mlx5_mac_addr_remove,
261 .mac_addr_add = mlx5_mac_addr_add,
262 .mac_addr_set = mlx5_mac_addr_set,
263 .mtu_set = mlx5_dev_set_mtu,
264 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
265 .vlan_offload_set = mlx5_vlan_offload_set,
266 .reta_update = mlx5_dev_rss_reta_update,
267 .reta_query = mlx5_dev_rss_reta_query,
268 .rss_hash_update = mlx5_rss_hash_update,
269 .rss_hash_conf_get = mlx5_rss_hash_conf_get,
270 .filter_ctrl = mlx5_dev_filter_ctrl,
271 .rx_descriptor_status = mlx5_rx_descriptor_status,
272 .tx_descriptor_status = mlx5_tx_descriptor_status,
273 .rx_queue_intr_enable = mlx5_rx_intr_enable,
274 .rx_queue_intr_disable = mlx5_rx_intr_disable,
275 .is_removed = mlx5_is_removed,
278 static const struct eth_dev_ops mlx5_dev_sec_ops = {
279 .stats_get = mlx5_stats_get,
280 .stats_reset = mlx5_stats_reset,
281 .xstats_get = mlx5_xstats_get,
282 .xstats_reset = mlx5_xstats_reset,
283 .xstats_get_names = mlx5_xstats_get_names,
284 .dev_infos_get = mlx5_dev_infos_get,
285 .rx_descriptor_status = mlx5_rx_descriptor_status,
286 .tx_descriptor_status = mlx5_tx_descriptor_status,
289 /* Available operators in flow isolated mode. */
290 const struct eth_dev_ops mlx5_dev_ops_isolate = {
291 .dev_configure = mlx5_dev_configure,
292 .dev_start = mlx5_dev_start,
293 .dev_stop = mlx5_dev_stop,
294 .dev_set_link_down = mlx5_set_link_down,
295 .dev_set_link_up = mlx5_set_link_up,
296 .dev_close = mlx5_dev_close,
297 .link_update = mlx5_link_update,
298 .stats_get = mlx5_stats_get,
299 .stats_reset = mlx5_stats_reset,
300 .xstats_get = mlx5_xstats_get,
301 .xstats_reset = mlx5_xstats_reset,
302 .xstats_get_names = mlx5_xstats_get_names,
303 .dev_infos_get = mlx5_dev_infos_get,
304 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
305 .vlan_filter_set = mlx5_vlan_filter_set,
306 .rx_queue_setup = mlx5_rx_queue_setup,
307 .tx_queue_setup = mlx5_tx_queue_setup,
308 .rx_queue_release = mlx5_rx_queue_release,
309 .tx_queue_release = mlx5_tx_queue_release,
310 .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
311 .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
312 .mac_addr_remove = mlx5_mac_addr_remove,
313 .mac_addr_add = mlx5_mac_addr_add,
314 .mac_addr_set = mlx5_mac_addr_set,
315 .mtu_set = mlx5_dev_set_mtu,
316 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
317 .vlan_offload_set = mlx5_vlan_offload_set,
318 .filter_ctrl = mlx5_dev_filter_ctrl,
319 .rx_descriptor_status = mlx5_rx_descriptor_status,
320 .tx_descriptor_status = mlx5_tx_descriptor_status,
321 .rx_queue_intr_enable = mlx5_rx_intr_enable,
322 .rx_queue_intr_disable = mlx5_rx_intr_disable,
323 .is_removed = mlx5_is_removed,
327 struct rte_pci_addr pci_addr; /* associated PCI address */
328 uint32_t ports; /* physical ports bitfield. */
332 * Get device index in mlx5_dev[] from PCI bus address.
334 * @param[in] pci_addr
335 * PCI bus address to look for.
338 * mlx5_dev[] index on success, -1 on failure.
341 mlx5_dev_idx(struct rte_pci_addr *pci_addr)
346 assert(pci_addr != NULL);
347 for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) {
348 if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) &&
349 (mlx5_dev[i].pci_addr.bus == pci_addr->bus) &&
350 (mlx5_dev[i].pci_addr.devid == pci_addr->devid) &&
351 (mlx5_dev[i].pci_addr.function == pci_addr->function))
353 if ((mlx5_dev[i].ports == 0) && (ret == -1))
360 * Verify and store value for device argument.
363 * Key argument to verify.
365 * Value associated with key.
370 * 0 on success, negative errno value on failure.
373 mlx5_args_check(const char *key, const char *val, void *opaque)
375 struct mlx5_dev_config *config = opaque;
379 tmp = strtoul(val, NULL, 0);
381 WARN("%s: \"%s\" is not a valid integer", key, val);
384 if (strcmp(MLX5_RXQ_CQE_COMP_EN, key) == 0) {
385 config->cqe_comp = !!tmp;
386 } else if (strcmp(MLX5_TXQ_INLINE, key) == 0) {
387 config->txq_inline = tmp;
388 } else if (strcmp(MLX5_TXQS_MIN_INLINE, key) == 0) {
389 config->txqs_inline = tmp;
390 } else if (strcmp(MLX5_TXQ_MPW_EN, key) == 0) {
391 config->mps = !!tmp ? config->mps : 0;
392 } else if (strcmp(MLX5_TXQ_MPW_HDR_DSEG_EN, key) == 0) {
393 config->mpw_hdr_dseg = !!tmp;
394 } else if (strcmp(MLX5_TXQ_MAX_INLINE_LEN, key) == 0) {
395 config->inline_max_packet_sz = tmp;
396 } else if (strcmp(MLX5_TX_VEC_EN, key) == 0) {
397 config->tx_vec_en = !!tmp;
398 } else if (strcmp(MLX5_RX_VEC_EN, key) == 0) {
399 config->rx_vec_en = !!tmp;
401 WARN("%s: unknown parameter", key);
408 * Parse device parameters.
411 * Pointer to device configuration structure.
413 * Device arguments structure.
416 * 0 on success, errno value on failure.
419 mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs)
421 const char **params = (const char *[]){
422 MLX5_RXQ_CQE_COMP_EN,
424 MLX5_TXQS_MIN_INLINE,
426 MLX5_TXQ_MPW_HDR_DSEG_EN,
427 MLX5_TXQ_MAX_INLINE_LEN,
432 struct rte_kvargs *kvlist;
438 /* Following UGLY cast is done to pass checkpatch. */
439 kvlist = rte_kvargs_parse(devargs->args, params);
442 /* Process parameters. */
443 for (i = 0; (params[i] != NULL); ++i) {
444 if (rte_kvargs_count(kvlist, params[i])) {
445 ret = rte_kvargs_process(kvlist, params[i],
446 mlx5_args_check, config);
448 rte_kvargs_free(kvlist);
453 rte_kvargs_free(kvlist);
457 static struct rte_pci_driver mlx5_driver;
460 * Reserved UAR address space for TXQ UAR(hw doorbell) mapping, process
461 * local resource used by both primary and secondary to avoid duplicate
463 * The space has to be available on both primary and secondary process,
464 * TXQ UAR maps to this area using fixed mmap w/o double check.
466 static void *uar_base;
469 * Reserve UAR address space for primary process.
472 * Pointer to private structure.
475 * 0 on success, errno value on failure.
478 priv_uar_init_primary(struct priv *priv)
480 void *addr = (void *)0;
482 const struct rte_mem_config *mcfg;
485 if (uar_base) { /* UAR address space mapped. */
486 priv->uar_base = uar_base;
489 /* find out lower bound of hugepage segments */
490 mcfg = rte_eal_get_configuration()->mem_config;
491 for (i = 0; i < RTE_MAX_MEMSEG && mcfg->memseg[i].addr; i++) {
493 addr = RTE_MIN(addr, mcfg->memseg[i].addr);
495 addr = mcfg->memseg[i].addr;
497 /* keep distance to hugepages to minimize potential conflicts. */
498 addr = RTE_PTR_SUB(addr, MLX5_UAR_OFFSET + MLX5_UAR_SIZE);
499 /* anonymous mmap, no real memory consumption. */
500 addr = mmap(addr, MLX5_UAR_SIZE,
501 PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
502 if (addr == MAP_FAILED) {
503 ERROR("Failed to reserve UAR address space, please adjust "
504 "MLX5_UAR_SIZE or try --base-virtaddr");
508 /* Accept either same addr or a new addr returned from mmap if target
511 INFO("Reserved UAR address space: %p", addr);
512 priv->uar_base = addr; /* for primary and secondary UAR re-mmap. */
513 uar_base = addr; /* process local, don't reserve again. */
518 * Reserve UAR address space for secondary process, align with
522 * Pointer to private structure.
525 * 0 on success, errno value on failure.
528 priv_uar_init_secondary(struct priv *priv)
533 assert(priv->uar_base);
534 if (uar_base) { /* already reserved. */
535 assert(uar_base == priv->uar_base);
538 /* anonymous mmap, no real memory consumption. */
539 addr = mmap(priv->uar_base, MLX5_UAR_SIZE,
540 PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
541 if (addr == MAP_FAILED) {
542 ERROR("UAR mmap failed: %p size: %llu",
543 priv->uar_base, MLX5_UAR_SIZE);
547 if (priv->uar_base != addr) {
548 ERROR("UAR address %p size %llu occupied, please adjust "
549 "MLX5_UAR_OFFSET or try EAL parameter --base-virtaddr",
550 priv->uar_base, MLX5_UAR_SIZE);
554 uar_base = addr; /* process local, don't reserve again */
555 INFO("Reserved UAR address space: %p", addr);
560 * DPDK callback to register a PCI device.
562 * This function creates an Ethernet device for each port of a given
566 * PCI driver structure (mlx5_driver).
568 * PCI device information.
571 * 0 on success, negative errno value on failure.
574 mlx5_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
576 struct ibv_device **list;
577 struct ibv_device *ibv_dev;
579 struct ibv_context *attr_ctx = NULL;
580 struct ibv_device_attr_ex device_attr;
582 unsigned int cqe_comp;
583 unsigned int tunnel_en = 0;
586 struct mlx5dv_context attrs_out = {0};
587 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
588 struct ibv_counter_set_description cs_desc;
592 assert(pci_drv == &mlx5_driver);
593 /* Get mlx5_dev[] index. */
594 idx = mlx5_dev_idx(&pci_dev->addr);
596 ERROR("this driver cannot support any more adapters");
599 DEBUG("using driver device index %d", idx);
601 /* Save PCI address. */
602 mlx5_dev[idx].pci_addr = pci_dev->addr;
603 list = mlx5_glue->get_device_list(&i);
607 ERROR("cannot list devices, is ib_uverbs loaded?");
612 * For each listed device, check related sysfs entry against
613 * the provided PCI ID.
616 struct rte_pci_addr pci_addr;
619 DEBUG("checking device \"%s\"", list[i]->name);
620 if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr))
622 if ((pci_dev->addr.domain != pci_addr.domain) ||
623 (pci_dev->addr.bus != pci_addr.bus) ||
624 (pci_dev->addr.devid != pci_addr.devid) ||
625 (pci_dev->addr.function != pci_addr.function))
627 INFO("PCI information matches, using device \"%s\"",
629 attr_ctx = mlx5_glue->open_device(list[i]);
633 if (attr_ctx == NULL) {
634 mlx5_glue->free_device_list(list);
637 ERROR("cannot access device, is mlx5_ib loaded?");
640 ERROR("cannot use device, are drivers up to date?");
648 DEBUG("device opened");
650 * Multi-packet send is supported by ConnectX-4 Lx PF as well
651 * as all ConnectX-5 devices.
653 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
654 attrs_out.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS;
656 mlx5_glue->dv_query_device(attr_ctx, &attrs_out);
657 if (attrs_out.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) {
658 if (attrs_out.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) {
659 DEBUG("Enhanced MPW is supported");
660 mps = MLX5_MPW_ENHANCED;
662 DEBUG("MPW is supported");
666 DEBUG("MPW isn't supported");
667 mps = MLX5_MPW_DISABLED;
669 if (RTE_CACHE_LINE_SIZE == 128 &&
670 !(attrs_out.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP))
674 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
675 if (attrs_out.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) {
676 tunnel_en = ((attrs_out.tunnel_offloads_caps &
677 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) &&
678 (attrs_out.tunnel_offloads_caps &
679 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE));
681 DEBUG("Tunnel offloading is %ssupported", tunnel_en ? "" : "not ");
683 WARN("Tunnel offloading disabled due to old OFED/rdma-core version");
685 if (mlx5_glue->query_device_ex(attr_ctx, NULL, &device_attr))
687 INFO("%u port(s) detected", device_attr.orig_attr.phys_port_cnt);
689 for (i = 0; i < device_attr.orig_attr.phys_port_cnt; i++) {
690 char name[RTE_ETH_NAME_MAX_LEN];
692 uint32_t port = i + 1; /* ports are indexed from one */
693 uint32_t test = (1 << i);
694 struct ibv_context *ctx = NULL;
695 struct ibv_port_attr port_attr;
696 struct ibv_pd *pd = NULL;
697 struct priv *priv = NULL;
698 struct rte_eth_dev *eth_dev;
699 struct ibv_device_attr_ex device_attr_ex;
700 struct ether_addr mac;
701 struct ibv_device_attr_ex device_attr;
702 struct mlx5_dev_config config = {
703 .cqe_comp = cqe_comp,
705 .tunnel_en = tunnel_en,
709 .txq_inline = MLX5_ARG_UNSET,
710 .txqs_inline = MLX5_ARG_UNSET,
711 .inline_max_packet_sz = MLX5_ARG_UNSET,
714 len = snprintf(name, sizeof(name), PCI_PRI_FMT,
715 pci_dev->addr.domain, pci_dev->addr.bus,
716 pci_dev->addr.devid, pci_dev->addr.function);
717 if (device_attr.orig_attr.phys_port_cnt > 1)
718 snprintf(name + len, sizeof(name), " port %u", i);
720 mlx5_dev[idx].ports |= test;
722 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
723 eth_dev = rte_eth_dev_attach_secondary(name);
724 if (eth_dev == NULL) {
725 ERROR("can not attach rte ethdev");
729 eth_dev->device = &pci_dev->device;
730 eth_dev->dev_ops = &mlx5_dev_sec_ops;
731 priv = eth_dev->data->dev_private;
732 err = priv_uar_init_secondary(priv);
737 /* Receive command fd from primary process */
738 err = priv_socket_connect(priv);
743 /* Remap UAR for Tx queues. */
744 err = priv_tx_uar_remap(priv, err);
748 * Ethdev pointer is still required as input since
749 * the primary device is not accessible from the
752 eth_dev->rx_pkt_burst =
753 priv_select_rx_function(priv, eth_dev);
754 eth_dev->tx_pkt_burst =
755 priv_select_tx_function(priv, eth_dev);
759 DEBUG("using port %u (%08" PRIx32 ")", port, test);
761 ctx = mlx5_glue->open_device(ibv_dev);
767 mlx5_glue->query_device_ex(ctx, NULL, &device_attr);
768 /* Check port status. */
769 err = mlx5_glue->query_port(ctx, port, &port_attr);
771 ERROR("port query failed: %s", strerror(err));
775 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
776 ERROR("port %d is not configured in Ethernet mode",
782 if (port_attr.state != IBV_PORT_ACTIVE)
783 DEBUG("port %d is not active: \"%s\" (%d)",
784 port, mlx5_glue->port_state_str(port_attr.state),
787 /* Allocate protection domain. */
788 pd = mlx5_glue->alloc_pd(ctx);
790 ERROR("PD allocation failure");
795 mlx5_dev[idx].ports |= test;
797 /* from rte_ethdev.c */
798 priv = rte_zmalloc("ethdev private structure",
800 RTE_CACHE_LINE_SIZE);
802 ERROR("priv allocation failure");
808 strncpy(priv->ibdev_path, priv->ctx->device->ibdev_path,
809 sizeof(priv->ibdev_path));
810 priv->device_attr = device_attr;
813 priv->mtu = ETHER_MTU;
814 err = mlx5_args(&config, pci_dev->device.devargs);
816 ERROR("failed to process device arguments: %s",
820 if (mlx5_glue->query_device_ex(ctx, NULL, &device_attr_ex)) {
821 ERROR("ibv_query_device_ex() failed");
825 config.hw_csum = !!(device_attr_ex.device_cap_flags_ex &
826 IBV_DEVICE_RAW_IP_CSUM);
827 DEBUG("checksum offloading is %ssupported",
828 (config.hw_csum ? "" : "not "));
829 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
830 config.flow_counter_en = !!(device_attr.max_counter_sets);
831 mlx5_glue->describe_counter_set(ctx, 0, &cs_desc);
832 DEBUG("counter type = %d, num of cs = %ld, attributes = %d",
833 cs_desc.counter_type, cs_desc.num_of_cs,
836 config.ind_table_max_size =
837 device_attr_ex.rss_caps.max_rwq_indirection_table_size;
838 /* Remove this check once DPDK supports larger/variable
839 * indirection tables. */
840 if (config.ind_table_max_size >
841 (unsigned int)ETH_RSS_RETA_SIZE_512)
842 config.ind_table_max_size = ETH_RSS_RETA_SIZE_512;
843 DEBUG("maximum RX indirection table size is %u",
844 config.ind_table_max_size);
845 config.hw_vlan_strip = !!(device_attr_ex.raw_packet_caps &
846 IBV_RAW_PACKET_CAP_CVLAN_STRIPPING);
847 DEBUG("VLAN stripping is %ssupported",
848 (config.hw_vlan_strip ? "" : "not "));
850 config.hw_fcs_strip = !!(device_attr_ex.raw_packet_caps &
851 IBV_RAW_PACKET_CAP_SCATTER_FCS);
852 DEBUG("FCS stripping configuration is %ssupported",
853 (config.hw_fcs_strip ? "" : "not "));
855 #ifdef HAVE_IBV_WQ_FLAG_RX_END_PADDING
856 config.hw_padding = !!device_attr_ex.rx_pad_end_addr_align;
858 DEBUG("hardware RX end alignment padding is %ssupported",
859 (config.hw_padding ? "" : "not "));
861 config.tso = ((device_attr_ex.tso_caps.max_tso > 0) &&
862 (device_attr_ex.tso_caps.supported_qpts &
863 (1 << IBV_QPT_RAW_PACKET)));
865 config.tso_max_payload_sz =
866 device_attr_ex.tso_caps.max_tso;
867 if (config.mps && !mps) {
868 ERROR("multi-packet send not supported on this device"
869 " (" MLX5_TXQ_MPW_EN ")");
874 config.mps == MLX5_MPW_ENHANCED ? "Enhanced " : "",
875 config.mps != MLX5_MPW_DISABLED ? "enabled" : "disabled");
876 if (config.cqe_comp && !cqe_comp) {
877 WARN("Rx CQE compression isn't supported");
880 err = priv_uar_init_primary(priv);
883 /* Configure the first MAC address by default. */
884 if (priv_get_mac(priv, &mac.addr_bytes)) {
885 ERROR("cannot get MAC address, is mlx5_en loaded?"
886 " (errno: %s)", strerror(errno));
890 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
892 mac.addr_bytes[0], mac.addr_bytes[1],
893 mac.addr_bytes[2], mac.addr_bytes[3],
894 mac.addr_bytes[4], mac.addr_bytes[5]);
897 char ifname[IF_NAMESIZE];
899 if (priv_get_ifname(priv, &ifname) == 0)
900 DEBUG("port %u ifname is \"%s\"",
903 DEBUG("port %u ifname is unknown", priv->port);
906 /* Get actual MTU if possible. */
907 priv_get_mtu(priv, &priv->mtu);
908 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
910 eth_dev = rte_eth_dev_allocate(name);
911 if (eth_dev == NULL) {
912 ERROR("can not allocate rte ethdev");
916 eth_dev->data->dev_private = priv;
917 eth_dev->data->mac_addrs = priv->mac;
918 eth_dev->device = &pci_dev->device;
919 rte_eth_copy_pci_info(eth_dev, pci_dev);
920 eth_dev->device->driver = &mlx5_driver.driver;
922 * Initialize burst functions to prevent crashes before link-up.
924 eth_dev->rx_pkt_burst = removed_rx_burst;
925 eth_dev->tx_pkt_burst = removed_tx_burst;
927 eth_dev->dev_ops = &mlx5_dev_ops;
928 /* Register MAC address. */
929 claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
930 TAILQ_INIT(&priv->flows);
931 TAILQ_INIT(&priv->ctrl_flows);
933 /* Hint libmlx5 to use PMD allocator for data plane resources */
934 struct mlx5dv_ctx_allocators alctr = {
935 .alloc = &mlx5_alloc_verbs_buf,
936 .free = &mlx5_free_verbs_buf,
939 mlx5_glue->dv_set_context_attr(ctx,
940 MLX5DV_CTX_ATTR_BUF_ALLOCATORS,
941 (void *)((uintptr_t)&alctr));
943 /* Bring Ethernet device up. */
944 DEBUG("forcing Ethernet interface up");
945 priv_set_flags(priv, ~IFF_UP, IFF_UP);
946 /* Store device configuration on private structure. */
947 priv->config = config;
954 claim_zero(mlx5_glue->dealloc_pd(pd));
956 claim_zero(mlx5_glue->close_device(ctx));
961 * XXX if something went wrong in the loop above, there is a resource
962 * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
963 * long as the dpdk does not provide a way to deallocate a ethdev and a
964 * way to enumerate the registered ethdevs to free the previous ones.
967 /* no port found, complain */
968 if (!mlx5_dev[idx].ports) {
975 claim_zero(mlx5_glue->close_device(attr_ctx));
977 mlx5_glue->free_device_list(list);
982 static const struct rte_pci_id mlx5_pci_id_map[] = {
984 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
985 PCI_DEVICE_ID_MELLANOX_CONNECTX4)
988 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
989 PCI_DEVICE_ID_MELLANOX_CONNECTX4VF)
992 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
993 PCI_DEVICE_ID_MELLANOX_CONNECTX4LX)
996 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
997 PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF)
1000 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1001 PCI_DEVICE_ID_MELLANOX_CONNECTX5)
1004 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1005 PCI_DEVICE_ID_MELLANOX_CONNECTX5VF)
1008 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1009 PCI_DEVICE_ID_MELLANOX_CONNECTX5EX)
1012 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
1013 PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF)
1020 static struct rte_pci_driver mlx5_driver = {
1022 .name = MLX5_DRIVER_NAME
1024 .id_table = mlx5_pci_id_map,
1025 .probe = mlx5_pci_probe,
1026 .drv_flags = RTE_PCI_DRV_INTR_LSC | RTE_PCI_DRV_INTR_RMV,
1029 #ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS
1032 * Suffix RTE_EAL_PMD_PATH with "-glue".
1034 * This function performs a sanity check on RTE_EAL_PMD_PATH before
1035 * suffixing its last component.
1038 * Output buffer, should be large enough otherwise NULL is returned.
1043 * Pointer to @p buf or @p NULL in case suffix cannot be appended.
1046 mlx5_glue_path(char *buf, size_t size)
1048 static const char *const bad[] = { "/", ".", "..", NULL };
1049 const char *path = RTE_EAL_PMD_PATH;
1050 size_t len = strlen(path);
1054 while (len && path[len - 1] == '/')
1056 for (off = len; off && path[off - 1] != '/'; --off)
1058 for (i = 0; bad[i]; ++i)
1059 if (!strncmp(path + off, bad[i], (int)(len - off)))
1061 i = snprintf(buf, size, "%.*s-glue", (int)len, path);
1062 if (i == -1 || (size_t)i >= size)
1066 ERROR("unable to append \"-glue\" to last component of"
1067 " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\"),"
1068 " please re-configure DPDK");
1073 * Initialization routine for run-time dependency on rdma-core.
1076 mlx5_glue_init(void)
1078 char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")];
1079 const char *path[] = {
1081 * A basic security check is necessary before trusting
1082 * MLX5_GLUE_PATH, which may override RTE_EAL_PMD_PATH.
1084 (geteuid() == getuid() && getegid() == getgid() ?
1085 getenv("MLX5_GLUE_PATH") : NULL),
1087 * When RTE_EAL_PMD_PATH is set, use its glue-suffixed
1088 * variant, otherwise let dlopen() look up libraries on its
1091 (*RTE_EAL_PMD_PATH ?
1092 mlx5_glue_path(glue_path, sizeof(glue_path)) : ""),
1095 void *handle = NULL;
1099 while (!handle && i != RTE_DIM(path)) {
1108 end = strpbrk(path[i], ":;");
1110 end = path[i] + strlen(path[i]);
1111 len = end - path[i];
1116 ret = snprintf(name, sizeof(name), "%.*s%s" MLX5_GLUE,
1118 (!len || *(end - 1) == '/') ? "" : "/");
1121 if (sizeof(name) != (size_t)ret + 1)
1123 DEBUG("looking for rdma-core glue as \"%s\"", name);
1124 handle = dlopen(name, RTLD_LAZY);
1135 WARN("cannot load glue library: %s", dlmsg);
1138 sym = dlsym(handle, "mlx5_glue");
1139 if (!sym || !*sym) {
1143 ERROR("cannot resolve glue symbol: %s", dlmsg);
1151 WARN("cannot initialize PMD due to missing run-time"
1152 " dependency on rdma-core libraries (libibverbs,"
1160 * Driver initialization routine.
1162 RTE_INIT(rte_mlx5_pmd_init);
1164 rte_mlx5_pmd_init(void)
1166 /* Build the static table for ptype conversion. */
1167 mlx5_set_ptype_table();
1169 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
1170 * huge pages. Calling ibv_fork_init() during init allows
1171 * applications to use fork() safely for purposes other than
1172 * using this PMD, which is not supported in forked processes.
1174 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
1175 /* Match the size of Rx completion entry to the size of a cacheline. */
1176 if (RTE_CACHE_LINE_SIZE == 128)
1177 setenv("MLX5_CQE_SIZE", "128", 0);
1178 #ifdef RTE_LIBRTE_MLX5_DLOPEN_DEPS
1179 if (mlx5_glue_init())
1184 /* Glue structure must not contain any NULL pointers. */
1188 for (i = 0; i != sizeof(*mlx5_glue) / sizeof(void *); ++i)
1189 assert(((const void *const *)mlx5_glue)[i]);
1192 if (strcmp(mlx5_glue->version, MLX5_GLUE_VERSION)) {
1193 ERROR("rdma-core glue \"%s\" mismatch: \"%s\" is required",
1194 mlx5_glue->version, MLX5_GLUE_VERSION);
1197 mlx5_glue->fork_init();
1198 rte_pci_register(&mlx5_driver);
1201 RTE_PMD_EXPORT_NAME(net_mlx5, __COUNTER__);
1202 RTE_PMD_REGISTER_PCI_TABLE(net_mlx5, mlx5_pci_id_map);
1203 RTE_PMD_REGISTER_KMOD_DEP(net_mlx5, "* ib_uverbs & mlx5_core & mlx5_ib");