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"
70 * DPDK callback to close the device.
72 * Destroy all queues and objects, free memory.
75 * Pointer to Ethernet device structure.
78 mlx5_dev_close(struct rte_eth_dev *dev)
80 struct priv *priv = dev->data->dev_private;
85 DEBUG("%p: closing device \"%s\"",
87 ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
88 /* Prevent crashes when queues are still in use. */
89 dev->rx_pkt_burst = removed_rx_burst;
90 dev->tx_pkt_burst = removed_tx_burst;
91 if (priv->rxqs != NULL) {
92 /* XXX race condition if mlx5_rx_burst() is still running. */
94 for (i = 0; (i != priv->rxqs_n); ++i) {
95 tmp = (*priv->rxqs)[i];
98 (*priv->rxqs)[i] = NULL;
105 if (priv->txqs != NULL) {
106 /* XXX race condition if mlx5_tx_burst() is still running. */
108 for (i = 0; (i != priv->txqs_n); ++i) {
109 tmp = (*priv->txqs)[i];
112 (*priv->txqs)[i] = NULL;
120 rxq_cleanup(&priv->rxq_parent);
121 if (priv->pd != NULL) {
122 assert(priv->ctx != NULL);
123 claim_zero(ibv_dealloc_pd(priv->pd));
124 claim_zero(ibv_close_device(priv->ctx));
126 assert(priv->ctx == NULL);
128 memset(priv, 0, sizeof(*priv));
131 static const struct eth_dev_ops mlx5_dev_ops = {
132 .dev_close = mlx5_dev_close,
133 .rx_queue_setup = mlx5_rx_queue_setup,
134 .tx_queue_setup = mlx5_tx_queue_setup,
135 .rx_queue_release = mlx5_rx_queue_release,
136 .tx_queue_release = mlx5_tx_queue_release,
140 struct rte_pci_addr pci_addr; /* associated PCI address */
141 uint32_t ports; /* physical ports bitfield. */
145 * Get device index in mlx5_dev[] from PCI bus address.
147 * @param[in] pci_addr
148 * PCI bus address to look for.
151 * mlx5_dev[] index on success, -1 on failure.
154 mlx5_dev_idx(struct rte_pci_addr *pci_addr)
159 assert(pci_addr != NULL);
160 for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) {
161 if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) &&
162 (mlx5_dev[i].pci_addr.bus == pci_addr->bus) &&
163 (mlx5_dev[i].pci_addr.devid == pci_addr->devid) &&
164 (mlx5_dev[i].pci_addr.function == pci_addr->function))
166 if ((mlx5_dev[i].ports == 0) && (ret == -1))
172 static struct eth_driver mlx5_driver;
175 * DPDK callback to register a PCI device.
177 * This function creates an Ethernet device for each port of a given
181 * PCI driver structure (mlx5_driver).
183 * PCI device information.
186 * 0 on success, negative errno value on failure.
189 mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
191 struct ibv_device **list;
192 struct ibv_device *ibv_dev;
194 struct ibv_context *attr_ctx = NULL;
195 struct ibv_device_attr device_attr;
201 assert(pci_drv == &mlx5_driver.pci_drv);
202 /* Get mlx5_dev[] index. */
203 idx = mlx5_dev_idx(&pci_dev->addr);
205 ERROR("this driver cannot support any more adapters");
208 DEBUG("using driver device index %d", idx);
210 /* Save PCI address. */
211 mlx5_dev[idx].pci_addr = pci_dev->addr;
212 list = ibv_get_device_list(&i);
215 if (errno == ENOSYS) {
216 WARN("cannot list devices, is ib_uverbs loaded?");
223 * For each listed device, check related sysfs entry against
224 * the provided PCI ID.
227 struct rte_pci_addr pci_addr;
230 DEBUG("checking device \"%s\"", list[i]->name);
231 if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr))
233 if ((pci_dev->addr.domain != pci_addr.domain) ||
234 (pci_dev->addr.bus != pci_addr.bus) ||
235 (pci_dev->addr.devid != pci_addr.devid) ||
236 (pci_dev->addr.function != pci_addr.function))
238 vf = ((pci_dev->id.device_id ==
239 PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) ||
240 (pci_dev->id.device_id ==
241 PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF));
242 INFO("PCI information matches, using device \"%s\" (VF: %s)",
243 list[i]->name, (vf ? "true" : "false"));
244 attr_ctx = ibv_open_device(list[i]);
248 if (attr_ctx == NULL) {
249 ibv_free_device_list(list);
252 WARN("cannot access device, is mlx5_ib loaded?");
255 WARN("cannot use device, are drivers up to date?");
263 DEBUG("device opened");
264 if (ibv_query_device(attr_ctx, &device_attr))
266 INFO("%u port(s) detected", device_attr.phys_port_cnt);
268 for (i = 0; i < device_attr.phys_port_cnt; i++) {
269 uint32_t port = i + 1; /* ports are indexed from one */
270 uint32_t test = (1 << i);
271 struct ibv_context *ctx = NULL;
272 struct ibv_port_attr port_attr;
273 struct ibv_pd *pd = NULL;
274 struct priv *priv = NULL;
275 struct rte_eth_dev *eth_dev;
276 #ifdef HAVE_EXP_QUERY_DEVICE
277 struct ibv_exp_device_attr exp_device_attr;
278 #endif /* HAVE_EXP_QUERY_DEVICE */
279 struct ether_addr mac;
281 #ifdef HAVE_EXP_QUERY_DEVICE
282 exp_device_attr.comp_mask = IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS;
284 exp_device_attr.comp_mask |= IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ;
285 #endif /* RSS_SUPPORT */
286 #endif /* HAVE_EXP_QUERY_DEVICE */
288 DEBUG("using port %u (%08" PRIx32 ")", port, test);
290 ctx = ibv_open_device(ibv_dev);
294 /* Check port status. */
295 err = ibv_query_port(ctx, port, &port_attr);
297 ERROR("port query failed: %s", strerror(err));
300 if (port_attr.state != IBV_PORT_ACTIVE)
301 DEBUG("port %d is not active: \"%s\" (%d)",
302 port, ibv_port_state_str(port_attr.state),
305 /* Allocate protection domain. */
306 pd = ibv_alloc_pd(ctx);
308 ERROR("PD allocation failure");
313 mlx5_dev[idx].ports |= test;
315 /* from rte_ethdev.c */
316 priv = rte_zmalloc("ethdev private structure",
318 RTE_CACHE_LINE_SIZE);
320 ERROR("priv allocation failure");
326 priv->device_attr = device_attr;
329 priv->mtu = ETHER_MTU;
330 #ifdef HAVE_EXP_QUERY_DEVICE
331 if (ibv_exp_query_device(ctx, &exp_device_attr)) {
332 ERROR("ibv_exp_query_device() failed");
336 if ((exp_device_attr.exp_device_cap_flags &
337 IBV_EXP_DEVICE_QPG) &&
338 (exp_device_attr.exp_device_cap_flags &
339 IBV_EXP_DEVICE_UD_RSS) &&
340 (exp_device_attr.comp_mask &
341 IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ) &&
342 (exp_device_attr.max_rss_tbl_sz > 0)) {
345 priv->max_rss_tbl_sz = exp_device_attr.max_rss_tbl_sz;
349 priv->max_rss_tbl_sz = 0;
351 priv->hw_tss = !!(exp_device_attr.exp_device_cap_flags &
352 IBV_EXP_DEVICE_UD_TSS);
353 DEBUG("device flags: %s%s%s",
354 (priv->hw_qpg ? "IBV_DEVICE_QPG " : ""),
355 (priv->hw_tss ? "IBV_DEVICE_TSS " : ""),
356 (priv->hw_rss ? "IBV_DEVICE_RSS " : ""));
358 DEBUG("maximum RSS indirection table size: %u",
359 exp_device_attr.max_rss_tbl_sz);
360 #endif /* RSS_SUPPORT */
363 ((exp_device_attr.exp_device_cap_flags &
364 IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT) &&
365 (exp_device_attr.exp_device_cap_flags &
366 IBV_EXP_DEVICE_RX_CSUM_IP_PKT));
367 DEBUG("checksum offloading is %ssupported",
368 (priv->hw_csum ? "" : "not "));
370 priv->hw_csum_l2tun = !!(exp_device_attr.exp_device_cap_flags &
371 IBV_EXP_DEVICE_VXLAN_SUPPORT);
372 DEBUG("L2 tunnel checksum offloads are %ssupported",
373 (priv->hw_csum_l2tun ? "" : "not "));
375 #endif /* HAVE_EXP_QUERY_DEVICE */
378 /* Configure the first MAC address by default. */
379 if (priv_get_mac(priv, &mac.addr_bytes)) {
380 ERROR("cannot get MAC address, is mlx5_en loaded?"
381 " (errno: %s)", strerror(errno));
384 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
386 mac.addr_bytes[0], mac.addr_bytes[1],
387 mac.addr_bytes[2], mac.addr_bytes[3],
388 mac.addr_bytes[4], mac.addr_bytes[5]);
389 /* Register MAC and broadcast addresses. */
390 claim_zero(priv_mac_addr_add(priv, 0,
391 (const uint8_t (*)[ETHER_ADDR_LEN])
393 claim_zero(priv_mac_addr_add(priv, 1,
394 &(const uint8_t [ETHER_ADDR_LEN])
395 { "\xff\xff\xff\xff\xff\xff" }));
398 char ifname[IF_NAMESIZE];
400 if (priv_get_ifname(priv, &ifname) == 0)
401 DEBUG("port %u ifname is \"%s\"",
404 DEBUG("port %u ifname is unknown", priv->port);
407 /* Get actual MTU if possible. */
408 priv_get_mtu(priv, &priv->mtu);
409 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
411 /* from rte_ethdev.c */
413 char name[RTE_ETH_NAME_MAX_LEN];
415 snprintf(name, sizeof(name), "%s port %u",
416 ibv_get_device_name(ibv_dev), port);
417 eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI);
419 if (eth_dev == NULL) {
420 ERROR("can not allocate rte ethdev");
425 eth_dev->data->dev_private = priv;
426 eth_dev->pci_dev = pci_dev;
427 eth_dev->driver = &mlx5_driver;
428 eth_dev->data->rx_mbuf_alloc_failed = 0;
429 eth_dev->data->mtu = ETHER_MTU;
432 eth_dev->dev_ops = &mlx5_dev_ops;
433 eth_dev->data->mac_addrs = priv->mac;
435 /* Bring Ethernet device up. */
436 DEBUG("forcing Ethernet interface up");
437 priv_set_flags(priv, ~IFF_UP, IFF_UP);
443 claim_zero(ibv_dealloc_pd(pd));
445 claim_zero(ibv_close_device(ctx));
450 * XXX if something went wrong in the loop above, there is a resource
451 * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
452 * long as the dpdk does not provide a way to deallocate a ethdev and a
453 * way to enumerate the registered ethdevs to free the previous ones.
456 /* no port found, complain */
457 if (!mlx5_dev[idx].ports) {
464 claim_zero(ibv_close_device(attr_ctx));
466 ibv_free_device_list(list);
471 static const struct rte_pci_id mlx5_pci_id_map[] = {
473 .vendor_id = PCI_VENDOR_ID_MELLANOX,
474 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4,
475 .subsystem_vendor_id = PCI_ANY_ID,
476 .subsystem_device_id = PCI_ANY_ID
479 .vendor_id = PCI_VENDOR_ID_MELLANOX,
480 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4VF,
481 .subsystem_vendor_id = PCI_ANY_ID,
482 .subsystem_device_id = PCI_ANY_ID
485 .vendor_id = PCI_VENDOR_ID_MELLANOX,
486 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LX,
487 .subsystem_vendor_id = PCI_ANY_ID,
488 .subsystem_device_id = PCI_ANY_ID
491 .vendor_id = PCI_VENDOR_ID_MELLANOX,
492 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF,
493 .subsystem_vendor_id = PCI_ANY_ID,
494 .subsystem_device_id = PCI_ANY_ID
501 static struct eth_driver mlx5_driver = {
503 .name = MLX5_DRIVER_NAME,
504 .id_table = mlx5_pci_id_map,
505 .devinit = mlx5_pci_devinit,
507 .dev_private_size = sizeof(struct priv)
511 * Driver initialization routine.
514 rte_mlx5_pmd_init(const char *name, const char *args)
519 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
520 * huge pages. Calling ibv_fork_init() during init allows
521 * applications to use fork() safely for purposes other than
522 * using this PMD, which is not supported in forked processes.
524 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
526 rte_eal_pci_register(&mlx5_driver.pci_drv);
530 static struct rte_driver rte_mlx5_driver = {
532 .name = MLX5_DRIVER_NAME,
533 .init = rte_mlx5_pmd_init,
536 PMD_REGISTER_DRIVER(rte_mlx5_driver)