4 * Copyright 2015 6WIND S.A.
5 * Copyright 2015 Mellanox.
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8 * modification, are permitted provided that the following conditions
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43 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
45 #pragma GCC diagnostic ignored "-pedantic"
47 #include <infiniband/verbs.h>
49 #pragma GCC diagnostic error "-pedantic"
52 /* DPDK headers don't like -pedantic. */
54 #pragma GCC diagnostic ignored "-pedantic"
56 #include <rte_malloc.h>
57 #include <rte_ethdev.h>
59 #include <rte_common.h>
61 #pragma GCC diagnostic error "-pedantic"
65 #include "mlx5_utils.h"
66 #include "mlx5_rxtx.h"
67 #include "mlx5_autoconf.h"
68 #include "mlx5_defs.h"
71 * DPDK callback to close the device.
73 * Destroy all queues and objects, free memory.
76 * Pointer to Ethernet device structure.
79 mlx5_dev_close(struct rte_eth_dev *dev)
81 struct priv *priv = dev->data->dev_private;
86 DEBUG("%p: closing device \"%s\"",
88 ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
89 /* In case mlx5_dev_stop() has not been called. */
90 priv_dev_interrupt_handler_uninstall(priv, dev);
91 priv_special_flow_disable_all(priv);
92 priv_mac_addrs_disable(priv);
93 priv_destroy_hash_rxqs(priv);
95 /* Remove flow director elements. */
96 priv_fdir_disable(priv);
97 priv_fdir_delete_filters_list(priv);
99 /* Prevent crashes when queues are still in use. */
100 dev->rx_pkt_burst = removed_rx_burst;
101 dev->tx_pkt_burst = removed_tx_burst;
102 if (priv->rxqs != NULL) {
103 /* XXX race condition if mlx5_rx_burst() is still running. */
105 for (i = 0; (i != priv->rxqs_n); ++i) {
106 tmp = (*priv->rxqs)[i];
109 (*priv->rxqs)[i] = NULL;
116 if (priv->txqs != NULL) {
117 /* XXX race condition if mlx5_tx_burst() is still running. */
119 for (i = 0; (i != priv->txqs_n); ++i) {
120 tmp = (*priv->txqs)[i];
123 (*priv->txqs)[i] = NULL;
130 if (priv->pd != NULL) {
131 assert(priv->ctx != NULL);
132 claim_zero(ibv_dealloc_pd(priv->pd));
133 claim_zero(ibv_close_device(priv->ctx));
135 assert(priv->ctx == NULL);
136 if (priv->rss_conf != NULL) {
137 for (i = 0; (i != hash_rxq_init_n); ++i)
138 rte_free((*priv->rss_conf)[i]);
139 rte_free(priv->rss_conf);
141 if (priv->reta_idx != NULL)
142 rte_free(priv->reta_idx);
144 memset(priv, 0, sizeof(*priv));
147 static const struct eth_dev_ops mlx5_dev_ops = {
148 .dev_configure = mlx5_dev_configure,
149 .dev_start = mlx5_dev_start,
150 .dev_stop = mlx5_dev_stop,
151 .dev_close = mlx5_dev_close,
152 .promiscuous_enable = mlx5_promiscuous_enable,
153 .promiscuous_disable = mlx5_promiscuous_disable,
154 .allmulticast_enable = mlx5_allmulticast_enable,
155 .allmulticast_disable = mlx5_allmulticast_disable,
156 .link_update = mlx5_link_update,
157 .stats_get = mlx5_stats_get,
158 .stats_reset = mlx5_stats_reset,
159 .dev_infos_get = mlx5_dev_infos_get,
160 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
161 .vlan_filter_set = mlx5_vlan_filter_set,
162 .rx_queue_setup = mlx5_rx_queue_setup,
163 .tx_queue_setup = mlx5_tx_queue_setup,
164 .rx_queue_release = mlx5_rx_queue_release,
165 .tx_queue_release = mlx5_tx_queue_release,
166 .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
167 .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
168 .mac_addr_remove = mlx5_mac_addr_remove,
169 .mac_addr_add = mlx5_mac_addr_add,
170 .mac_addr_set = mlx5_mac_addr_set,
171 .mtu_set = mlx5_dev_set_mtu,
172 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
173 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
174 .vlan_offload_set = mlx5_vlan_offload_set,
175 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
176 .reta_update = mlx5_dev_rss_reta_update,
177 .reta_query = mlx5_dev_rss_reta_query,
178 .rss_hash_update = mlx5_rss_hash_update,
179 .rss_hash_conf_get = mlx5_rss_hash_conf_get,
180 #ifdef MLX5_FDIR_SUPPORT
181 .filter_ctrl = mlx5_dev_filter_ctrl,
182 #endif /* MLX5_FDIR_SUPPORT */
186 struct rte_pci_addr pci_addr; /* associated PCI address */
187 uint32_t ports; /* physical ports bitfield. */
191 * Get device index in mlx5_dev[] from PCI bus address.
193 * @param[in] pci_addr
194 * PCI bus address to look for.
197 * mlx5_dev[] index on success, -1 on failure.
200 mlx5_dev_idx(struct rte_pci_addr *pci_addr)
205 assert(pci_addr != NULL);
206 for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) {
207 if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) &&
208 (mlx5_dev[i].pci_addr.bus == pci_addr->bus) &&
209 (mlx5_dev[i].pci_addr.devid == pci_addr->devid) &&
210 (mlx5_dev[i].pci_addr.function == pci_addr->function))
212 if ((mlx5_dev[i].ports == 0) && (ret == -1))
218 static struct eth_driver mlx5_driver;
221 * DPDK callback to register a PCI device.
223 * This function creates an Ethernet device for each port of a given
227 * PCI driver structure (mlx5_driver).
229 * PCI device information.
232 * 0 on success, negative errno value on failure.
235 mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
237 struct ibv_device **list;
238 struct ibv_device *ibv_dev;
240 struct ibv_context *attr_ctx = NULL;
241 struct ibv_device_attr device_attr;
247 assert(pci_drv == &mlx5_driver.pci_drv);
248 /* Get mlx5_dev[] index. */
249 idx = mlx5_dev_idx(&pci_dev->addr);
251 ERROR("this driver cannot support any more adapters");
254 DEBUG("using driver device index %d", idx);
256 /* Save PCI address. */
257 mlx5_dev[idx].pci_addr = pci_dev->addr;
258 list = ibv_get_device_list(&i);
261 if (errno == ENOSYS) {
262 WARN("cannot list devices, is ib_uverbs loaded?");
269 * For each listed device, check related sysfs entry against
270 * the provided PCI ID.
273 struct rte_pci_addr pci_addr;
276 DEBUG("checking device \"%s\"", list[i]->name);
277 if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr))
279 if ((pci_dev->addr.domain != pci_addr.domain) ||
280 (pci_dev->addr.bus != pci_addr.bus) ||
281 (pci_dev->addr.devid != pci_addr.devid) ||
282 (pci_dev->addr.function != pci_addr.function))
284 vf = ((pci_dev->id.device_id ==
285 PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) ||
286 (pci_dev->id.device_id ==
287 PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF));
288 INFO("PCI information matches, using device \"%s\" (VF: %s)",
289 list[i]->name, (vf ? "true" : "false"));
290 attr_ctx = ibv_open_device(list[i]);
294 if (attr_ctx == NULL) {
295 ibv_free_device_list(list);
298 WARN("cannot access device, is mlx5_ib loaded?");
301 WARN("cannot use device, are drivers up to date?");
309 DEBUG("device opened");
310 if (ibv_query_device(attr_ctx, &device_attr))
312 INFO("%u port(s) detected", device_attr.phys_port_cnt);
314 for (i = 0; i < device_attr.phys_port_cnt; i++) {
315 uint32_t port = i + 1; /* ports are indexed from one */
316 uint32_t test = (1 << i);
317 struct ibv_context *ctx = NULL;
318 struct ibv_port_attr port_attr;
319 struct ibv_pd *pd = NULL;
320 struct priv *priv = NULL;
321 struct rte_eth_dev *eth_dev;
322 #ifdef HAVE_EXP_QUERY_DEVICE
323 struct ibv_exp_device_attr exp_device_attr;
324 #endif /* HAVE_EXP_QUERY_DEVICE */
325 struct ether_addr mac;
327 #ifdef HAVE_EXP_QUERY_DEVICE
328 exp_device_attr.comp_mask =
329 IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS |
330 IBV_EXP_DEVICE_ATTR_RX_HASH |
331 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
332 IBV_EXP_DEVICE_ATTR_VLAN_OFFLOADS |
333 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
335 #endif /* HAVE_EXP_QUERY_DEVICE */
337 DEBUG("using port %u (%08" PRIx32 ")", port, test);
339 ctx = ibv_open_device(ibv_dev);
343 /* Check port status. */
344 err = ibv_query_port(ctx, port, &port_attr);
346 ERROR("port query failed: %s", strerror(err));
350 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
351 ERROR("port %d is not configured in Ethernet mode",
356 if (port_attr.state != IBV_PORT_ACTIVE)
357 DEBUG("port %d is not active: \"%s\" (%d)",
358 port, ibv_port_state_str(port_attr.state),
361 /* Allocate protection domain. */
362 pd = ibv_alloc_pd(ctx);
364 ERROR("PD allocation failure");
369 mlx5_dev[idx].ports |= test;
371 /* from rte_ethdev.c */
372 priv = rte_zmalloc("ethdev private structure",
374 RTE_CACHE_LINE_SIZE);
376 ERROR("priv allocation failure");
382 priv->device_attr = device_attr;
385 priv->mtu = ETHER_MTU;
386 #ifdef HAVE_EXP_QUERY_DEVICE
387 if (ibv_exp_query_device(ctx, &exp_device_attr)) {
388 ERROR("ibv_exp_query_device() failed");
393 ((exp_device_attr.exp_device_cap_flags &
394 IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT) &&
395 (exp_device_attr.exp_device_cap_flags &
396 IBV_EXP_DEVICE_RX_CSUM_IP_PKT));
397 DEBUG("checksum offloading is %ssupported",
398 (priv->hw_csum ? "" : "not "));
400 priv->hw_csum_l2tun = !!(exp_device_attr.exp_device_cap_flags &
401 IBV_EXP_DEVICE_VXLAN_SUPPORT);
402 DEBUG("L2 tunnel checksum offloads are %ssupported",
403 (priv->hw_csum_l2tun ? "" : "not "));
405 priv->ind_table_max_size = exp_device_attr.rx_hash_caps.max_rwq_indirection_table_size;
406 /* Remove this check once DPDK supports larger/variable
407 * indirection tables. */
408 if (priv->ind_table_max_size > (unsigned int)RSS_INDIRECTION_TABLE_SIZE)
409 priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
410 DEBUG("maximum RX indirection table size is %u",
411 priv->ind_table_max_size);
412 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
413 priv->hw_vlan_strip = !!(exp_device_attr.wq_vlan_offloads_cap &
414 IBV_EXP_RECEIVE_WQ_CVLAN_STRIP);
415 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
416 DEBUG("VLAN stripping is %ssupported",
417 (priv->hw_vlan_strip ? "" : "not "));
419 #else /* HAVE_EXP_QUERY_DEVICE */
420 priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
421 #endif /* HAVE_EXP_QUERY_DEVICE */
424 /* Allocate and register default RSS hash keys. */
425 priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n,
426 sizeof((*priv->rss_conf)[0]), 0);
427 if (priv->rss_conf == NULL) {
431 err = rss_hash_rss_conf_new_key(priv,
432 rss_hash_default_key,
433 rss_hash_default_key_len,
437 /* Configure the first MAC address by default. */
438 if (priv_get_mac(priv, &mac.addr_bytes)) {
439 ERROR("cannot get MAC address, is mlx5_en loaded?"
440 " (errno: %s)", strerror(errno));
443 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
445 mac.addr_bytes[0], mac.addr_bytes[1],
446 mac.addr_bytes[2], mac.addr_bytes[3],
447 mac.addr_bytes[4], mac.addr_bytes[5]);
448 /* Register MAC address. */
449 claim_zero(priv_mac_addr_add(priv, 0,
450 (const uint8_t (*)[ETHER_ADDR_LEN])
452 /* Initialize FD filters list. */
453 err = fdir_init_filters_list(priv);
458 char ifname[IF_NAMESIZE];
460 if (priv_get_ifname(priv, &ifname) == 0)
461 DEBUG("port %u ifname is \"%s\"",
464 DEBUG("port %u ifname is unknown", priv->port);
467 /* Get actual MTU if possible. */
468 priv_get_mtu(priv, &priv->mtu);
469 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
471 /* from rte_ethdev.c */
473 char name[RTE_ETH_NAME_MAX_LEN];
475 snprintf(name, sizeof(name), "%s port %u",
476 ibv_get_device_name(ibv_dev), port);
477 eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI);
479 if (eth_dev == NULL) {
480 ERROR("can not allocate rte ethdev");
485 eth_dev->data->dev_private = priv;
486 eth_dev->pci_dev = pci_dev;
488 rte_eth_copy_pci_info(eth_dev, pci_dev);
490 eth_dev->driver = &mlx5_driver;
491 eth_dev->data->rx_mbuf_alloc_failed = 0;
492 eth_dev->data->mtu = ETHER_MTU;
495 eth_dev->dev_ops = &mlx5_dev_ops;
496 eth_dev->data->mac_addrs = priv->mac;
497 TAILQ_INIT(ð_dev->link_intr_cbs);
499 /* Bring Ethernet device up. */
500 DEBUG("forcing Ethernet interface up");
501 priv_set_flags(priv, ~IFF_UP, IFF_UP);
506 rte_free(priv->rss_conf);
510 claim_zero(ibv_dealloc_pd(pd));
512 claim_zero(ibv_close_device(ctx));
517 * XXX if something went wrong in the loop above, there is a resource
518 * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
519 * long as the dpdk does not provide a way to deallocate a ethdev and a
520 * way to enumerate the registered ethdevs to free the previous ones.
523 /* no port found, complain */
524 if (!mlx5_dev[idx].ports) {
531 claim_zero(ibv_close_device(attr_ctx));
533 ibv_free_device_list(list);
538 static const struct rte_pci_id mlx5_pci_id_map[] = {
540 .vendor_id = PCI_VENDOR_ID_MELLANOX,
541 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4,
542 .subsystem_vendor_id = PCI_ANY_ID,
543 .subsystem_device_id = PCI_ANY_ID
546 .vendor_id = PCI_VENDOR_ID_MELLANOX,
547 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4VF,
548 .subsystem_vendor_id = PCI_ANY_ID,
549 .subsystem_device_id = PCI_ANY_ID
552 .vendor_id = PCI_VENDOR_ID_MELLANOX,
553 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LX,
554 .subsystem_vendor_id = PCI_ANY_ID,
555 .subsystem_device_id = PCI_ANY_ID
558 .vendor_id = PCI_VENDOR_ID_MELLANOX,
559 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF,
560 .subsystem_vendor_id = PCI_ANY_ID,
561 .subsystem_device_id = PCI_ANY_ID
568 static struct eth_driver mlx5_driver = {
570 .name = MLX5_DRIVER_NAME,
571 .id_table = mlx5_pci_id_map,
572 .devinit = mlx5_pci_devinit,
573 .drv_flags = RTE_PCI_DRV_INTR_LSC,
575 .dev_private_size = sizeof(struct priv)
579 * Driver initialization routine.
582 rte_mlx5_pmd_init(const char *name, const char *args)
587 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
588 * huge pages. Calling ibv_fork_init() during init allows
589 * applications to use fork() safely for purposes other than
590 * using this PMD, which is not supported in forked processes.
592 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
594 rte_eal_pci_register(&mlx5_driver.pci_drv);
598 static struct rte_driver rte_mlx5_driver = {
600 .name = MLX5_DRIVER_NAME,
601 .init = rte_mlx5_pmd_init,
604 PMD_REGISTER_DRIVER(rte_mlx5_driver)