4 * Copyright 2015 6WIND S.A.
5 * Copyright 2015 Mellanox.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
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15 * the documentation and/or other materials provided with the
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23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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_allmulticast_disable(priv);
92 priv_promiscuous_disable(priv);
93 priv_mac_addrs_disable(priv);
94 priv_destroy_hash_rxqs(priv);
95 /* Prevent crashes when queues are still in use. */
96 dev->rx_pkt_burst = removed_rx_burst;
97 dev->tx_pkt_burst = removed_tx_burst;
98 if (priv->rxqs != NULL) {
99 /* XXX race condition if mlx5_rx_burst() is still running. */
101 for (i = 0; (i != priv->rxqs_n); ++i) {
102 tmp = (*priv->rxqs)[i];
105 (*priv->rxqs)[i] = NULL;
112 if (priv->txqs != NULL) {
113 /* XXX race condition if mlx5_tx_burst() is still running. */
115 for (i = 0; (i != priv->txqs_n); ++i) {
116 tmp = (*priv->txqs)[i];
119 (*priv->txqs)[i] = NULL;
126 if (priv->pd != NULL) {
127 assert(priv->ctx != NULL);
128 claim_zero(ibv_dealloc_pd(priv->pd));
129 claim_zero(ibv_close_device(priv->ctx));
131 assert(priv->ctx == NULL);
132 if (priv->rss_conf != NULL) {
133 for (i = 0; (i != hash_rxq_init_n); ++i)
134 rte_free((*priv->rss_conf)[i]);
135 rte_free(priv->rss_conf);
137 if (priv->reta_idx != NULL)
138 rte_free(priv->reta_idx);
140 memset(priv, 0, sizeof(*priv));
143 static const struct eth_dev_ops mlx5_dev_ops = {
144 .dev_configure = mlx5_dev_configure,
145 .dev_start = mlx5_dev_start,
146 .dev_stop = mlx5_dev_stop,
147 .dev_close = mlx5_dev_close,
148 .promiscuous_enable = mlx5_promiscuous_enable,
149 .promiscuous_disable = mlx5_promiscuous_disable,
150 .allmulticast_enable = mlx5_allmulticast_enable,
151 .allmulticast_disable = mlx5_allmulticast_disable,
152 .link_update = mlx5_link_update,
153 .stats_get = mlx5_stats_get,
154 .stats_reset = mlx5_stats_reset,
155 .dev_infos_get = mlx5_dev_infos_get,
156 .vlan_filter_set = mlx5_vlan_filter_set,
157 .rx_queue_setup = mlx5_rx_queue_setup,
158 .tx_queue_setup = mlx5_tx_queue_setup,
159 .rx_queue_release = mlx5_rx_queue_release,
160 .tx_queue_release = mlx5_tx_queue_release,
161 .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
162 .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
163 .mac_addr_remove = mlx5_mac_addr_remove,
164 .mac_addr_add = mlx5_mac_addr_add,
165 .mac_addr_set = mlx5_mac_addr_set,
166 .mtu_set = mlx5_dev_set_mtu,
167 .reta_update = mlx5_dev_rss_reta_update,
168 .reta_query = mlx5_dev_rss_reta_query,
169 .rss_hash_update = mlx5_rss_hash_update,
170 .rss_hash_conf_get = mlx5_rss_hash_conf_get,
174 struct rte_pci_addr pci_addr; /* associated PCI address */
175 uint32_t ports; /* physical ports bitfield. */
179 * Get device index in mlx5_dev[] from PCI bus address.
181 * @param[in] pci_addr
182 * PCI bus address to look for.
185 * mlx5_dev[] index on success, -1 on failure.
188 mlx5_dev_idx(struct rte_pci_addr *pci_addr)
193 assert(pci_addr != NULL);
194 for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) {
195 if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) &&
196 (mlx5_dev[i].pci_addr.bus == pci_addr->bus) &&
197 (mlx5_dev[i].pci_addr.devid == pci_addr->devid) &&
198 (mlx5_dev[i].pci_addr.function == pci_addr->function))
200 if ((mlx5_dev[i].ports == 0) && (ret == -1))
206 static struct eth_driver mlx5_driver;
209 * DPDK callback to register a PCI device.
211 * This function creates an Ethernet device for each port of a given
215 * PCI driver structure (mlx5_driver).
217 * PCI device information.
220 * 0 on success, negative errno value on failure.
223 mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
225 struct ibv_device **list;
226 struct ibv_device *ibv_dev;
228 struct ibv_context *attr_ctx = NULL;
229 struct ibv_device_attr device_attr;
235 assert(pci_drv == &mlx5_driver.pci_drv);
236 /* Get mlx5_dev[] index. */
237 idx = mlx5_dev_idx(&pci_dev->addr);
239 ERROR("this driver cannot support any more adapters");
242 DEBUG("using driver device index %d", idx);
244 /* Save PCI address. */
245 mlx5_dev[idx].pci_addr = pci_dev->addr;
246 list = ibv_get_device_list(&i);
249 if (errno == ENOSYS) {
250 WARN("cannot list devices, is ib_uverbs loaded?");
257 * For each listed device, check related sysfs entry against
258 * the provided PCI ID.
261 struct rte_pci_addr pci_addr;
264 DEBUG("checking device \"%s\"", list[i]->name);
265 if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr))
267 if ((pci_dev->addr.domain != pci_addr.domain) ||
268 (pci_dev->addr.bus != pci_addr.bus) ||
269 (pci_dev->addr.devid != pci_addr.devid) ||
270 (pci_dev->addr.function != pci_addr.function))
272 vf = ((pci_dev->id.device_id ==
273 PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) ||
274 (pci_dev->id.device_id ==
275 PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF));
276 INFO("PCI information matches, using device \"%s\" (VF: %s)",
277 list[i]->name, (vf ? "true" : "false"));
278 attr_ctx = ibv_open_device(list[i]);
282 if (attr_ctx == NULL) {
283 ibv_free_device_list(list);
286 WARN("cannot access device, is mlx5_ib loaded?");
289 WARN("cannot use device, are drivers up to date?");
297 DEBUG("device opened");
298 if (ibv_query_device(attr_ctx, &device_attr))
300 INFO("%u port(s) detected", device_attr.phys_port_cnt);
302 for (i = 0; i < device_attr.phys_port_cnt; i++) {
303 uint32_t port = i + 1; /* ports are indexed from one */
304 uint32_t test = (1 << i);
305 struct ibv_context *ctx = NULL;
306 struct ibv_port_attr port_attr;
307 struct ibv_pd *pd = NULL;
308 struct priv *priv = NULL;
309 struct rte_eth_dev *eth_dev;
310 #ifdef HAVE_EXP_QUERY_DEVICE
311 struct ibv_exp_device_attr exp_device_attr;
312 #endif /* HAVE_EXP_QUERY_DEVICE */
313 struct ether_addr mac;
315 #ifdef HAVE_EXP_QUERY_DEVICE
316 exp_device_attr.comp_mask =
317 IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS |
318 IBV_EXP_DEVICE_ATTR_RX_HASH;
319 #endif /* HAVE_EXP_QUERY_DEVICE */
321 DEBUG("using port %u (%08" PRIx32 ")", port, test);
323 ctx = ibv_open_device(ibv_dev);
327 /* Check port status. */
328 err = ibv_query_port(ctx, port, &port_attr);
330 ERROR("port query failed: %s", strerror(err));
333 if (port_attr.state != IBV_PORT_ACTIVE)
334 DEBUG("port %d is not active: \"%s\" (%d)",
335 port, ibv_port_state_str(port_attr.state),
338 /* Allocate protection domain. */
339 pd = ibv_alloc_pd(ctx);
341 ERROR("PD allocation failure");
346 mlx5_dev[idx].ports |= test;
348 /* from rte_ethdev.c */
349 priv = rte_zmalloc("ethdev private structure",
351 RTE_CACHE_LINE_SIZE);
353 ERROR("priv allocation failure");
359 priv->device_attr = device_attr;
362 priv->mtu = ETHER_MTU;
363 #ifdef HAVE_EXP_QUERY_DEVICE
364 if (ibv_exp_query_device(ctx, &exp_device_attr)) {
365 ERROR("ibv_exp_query_device() failed");
370 ((exp_device_attr.exp_device_cap_flags &
371 IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT) &&
372 (exp_device_attr.exp_device_cap_flags &
373 IBV_EXP_DEVICE_RX_CSUM_IP_PKT));
374 DEBUG("checksum offloading is %ssupported",
375 (priv->hw_csum ? "" : "not "));
377 priv->hw_csum_l2tun = !!(exp_device_attr.exp_device_cap_flags &
378 IBV_EXP_DEVICE_VXLAN_SUPPORT);
379 DEBUG("L2 tunnel checksum offloads are %ssupported",
380 (priv->hw_csum_l2tun ? "" : "not "));
382 priv->ind_table_max_size = exp_device_attr.rx_hash_caps.max_rwq_indirection_table_size;
383 /* Remove this check once DPDK supports larger/variable
384 * indirection tables. */
385 if (priv->ind_table_max_size > (unsigned int)RSS_INDIRECTION_TABLE_SIZE)
386 priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
387 DEBUG("maximum RX indirection table size is %u",
388 priv->ind_table_max_size);
390 #else /* HAVE_EXP_QUERY_DEVICE */
391 priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
392 #endif /* HAVE_EXP_QUERY_DEVICE */
395 /* Allocate and register default RSS hash keys. */
396 priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n,
397 sizeof((*priv->rss_conf)[0]), 0);
398 if (priv->rss_conf == NULL) {
402 err = rss_hash_rss_conf_new_key(priv,
403 rss_hash_default_key,
404 rss_hash_default_key_len,
408 /* Configure the first MAC address by default. */
409 if (priv_get_mac(priv, &mac.addr_bytes)) {
410 ERROR("cannot get MAC address, is mlx5_en loaded?"
411 " (errno: %s)", strerror(errno));
414 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
416 mac.addr_bytes[0], mac.addr_bytes[1],
417 mac.addr_bytes[2], mac.addr_bytes[3],
418 mac.addr_bytes[4], mac.addr_bytes[5]);
419 /* Register MAC and broadcast addresses. */
420 claim_zero(priv_mac_addr_add(priv, 0,
421 (const uint8_t (*)[ETHER_ADDR_LEN])
423 claim_zero(priv_mac_addr_add(priv, (RTE_DIM(priv->mac) - 1),
424 &(const uint8_t [ETHER_ADDR_LEN])
425 { "\xff\xff\xff\xff\xff\xff" }));
428 char ifname[IF_NAMESIZE];
430 if (priv_get_ifname(priv, &ifname) == 0)
431 DEBUG("port %u ifname is \"%s\"",
434 DEBUG("port %u ifname is unknown", priv->port);
437 /* Get actual MTU if possible. */
438 priv_get_mtu(priv, &priv->mtu);
439 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
441 /* from rte_ethdev.c */
443 char name[RTE_ETH_NAME_MAX_LEN];
445 snprintf(name, sizeof(name), "%s port %u",
446 ibv_get_device_name(ibv_dev), port);
447 eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI);
449 if (eth_dev == NULL) {
450 ERROR("can not allocate rte ethdev");
455 eth_dev->data->dev_private = priv;
456 eth_dev->pci_dev = pci_dev;
458 rte_eth_copy_pci_info(eth_dev, pci_dev);
460 eth_dev->driver = &mlx5_driver;
461 eth_dev->data->rx_mbuf_alloc_failed = 0;
462 eth_dev->data->mtu = ETHER_MTU;
465 eth_dev->dev_ops = &mlx5_dev_ops;
466 eth_dev->data->mac_addrs = priv->mac;
467 TAILQ_INIT(ð_dev->link_intr_cbs);
469 /* Bring Ethernet device up. */
470 DEBUG("forcing Ethernet interface up");
471 priv_set_flags(priv, ~IFF_UP, IFF_UP);
475 rte_free(priv->rss_conf);
478 claim_zero(ibv_dealloc_pd(pd));
480 claim_zero(ibv_close_device(ctx));
485 * XXX if something went wrong in the loop above, there is a resource
486 * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
487 * long as the dpdk does not provide a way to deallocate a ethdev and a
488 * way to enumerate the registered ethdevs to free the previous ones.
491 /* no port found, complain */
492 if (!mlx5_dev[idx].ports) {
499 claim_zero(ibv_close_device(attr_ctx));
501 ibv_free_device_list(list);
506 static const struct rte_pci_id mlx5_pci_id_map[] = {
508 .vendor_id = PCI_VENDOR_ID_MELLANOX,
509 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4,
510 .subsystem_vendor_id = PCI_ANY_ID,
511 .subsystem_device_id = PCI_ANY_ID
514 .vendor_id = PCI_VENDOR_ID_MELLANOX,
515 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4VF,
516 .subsystem_vendor_id = PCI_ANY_ID,
517 .subsystem_device_id = PCI_ANY_ID
520 .vendor_id = PCI_VENDOR_ID_MELLANOX,
521 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LX,
522 .subsystem_vendor_id = PCI_ANY_ID,
523 .subsystem_device_id = PCI_ANY_ID
526 .vendor_id = PCI_VENDOR_ID_MELLANOX,
527 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF,
528 .subsystem_vendor_id = PCI_ANY_ID,
529 .subsystem_device_id = PCI_ANY_ID
536 static struct eth_driver mlx5_driver = {
538 .name = MLX5_DRIVER_NAME,
539 .id_table = mlx5_pci_id_map,
540 .devinit = mlx5_pci_devinit,
541 .drv_flags = RTE_PCI_DRV_INTR_LSC,
543 .dev_private_size = sizeof(struct priv)
547 * Driver initialization routine.
550 rte_mlx5_pmd_init(const char *name, const char *args)
555 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
556 * huge pages. Calling ibv_fork_init() during init allows
557 * applications to use fork() safely for purposes other than
558 * using this PMD, which is not supported in forked processes.
560 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
562 rte_eal_pci_register(&mlx5_driver.pci_drv);
566 static struct rte_driver rte_mlx5_driver = {
568 .name = MLX5_DRIVER_NAME,
569 .init = rte_mlx5_pmd_init,
572 PMD_REGISTER_DRIVER(rte_mlx5_driver)