drivers/net/nfb/nfb_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Cesnet
   3  * Copyright(c) 2019 Netcope Technologies, a.s. <info@netcope.com>
   4  * All rights reserved.
   5  */
   6
   7 #include <nfb/nfb.h>
   8 #include <nfb/ndp.h>
   9 #include <netcope/rxmac.h>
  10 #include <netcope/txmac.h>
  11
  12 #include <rte_ethdev_pci.h>
  13 #include <rte_kvargs.h>
  14
  15 #include "nfb_stats.h"
  16 #include "nfb_rx.h"
  17 #include "nfb_tx.h"
  18 #include "nfb_rxmode.h"
  19 #include "nfb.h"
  20
  21 /**
  22  * Default MAC addr
  23  */
  24 static const struct rte_ether_addr eth_addr = {
  25         .addr_bytes = { 0x00, 0x11, 0x17, 0x00, 0x00, 0x00 }
  26 };
  27
  28 /**
  29  * Open all RX DMA queues
  30  *
  31  * @param dev
  32  *   Pointer to nfb device.
  33  * @param[out] rxmac
  34  *   Pointer to output array of nc_rxmac
  35  * @param[out] max_rxmac
  36  *   Pointer to output max index of rxmac
  37  */
  38 static void
  39 nfb_nc_rxmac_init(struct nfb_device *nfb,
  40         struct nc_rxmac *rxmac[RTE_MAX_NC_RXMAC],
  41         uint16_t *max_rxmac)
  42 {
  43         *max_rxmac = 0;
  44         while ((rxmac[*max_rxmac] = nc_rxmac_open_index(nfb, *max_rxmac)))
  45                 ++(*max_rxmac);
  46 }
  47
  48 /**
  49  * Open all TX DMA queues
  50  *
  51  * @param dev
  52  *   Pointer to nfb device.
  53  * @param[out] txmac
  54  *   Pointer to output array of nc_txmac
  55  * @param[out] max_rxmac
  56  *   Pointer to output max index of txmac
  57  */
  58 static void
  59 nfb_nc_txmac_init(struct nfb_device *nfb,
  60         struct nc_txmac *txmac[RTE_MAX_NC_TXMAC],
  61         uint16_t *max_txmac)
  62 {
  63         *max_txmac = 0;
  64         while ((txmac[*max_txmac] = nc_txmac_open_index(nfb, *max_txmac)))
  65                 ++(*max_txmac);
  66 }
  67
  68 /**
  69  * Close all RX DMA queues
  70  *
  71  * @param rxmac
  72  *   Pointer to array of nc_rxmac
  73  * @param max_rxmac
  74  *   Maximum index of rxmac
  75  */
  76 static void
  77 nfb_nc_rxmac_deinit(struct nc_rxmac *rxmac[RTE_MAX_NC_RXMAC],
  78         uint16_t max_rxmac)
  79 {
  80         for (; max_rxmac > 0; --max_rxmac) {
  81                 nc_rxmac_close(rxmac[max_rxmac]);
  82                 rxmac[max_rxmac] = NULL;
  83         }
  84 }
  85
  86 /**
  87  * Close all TX DMA queues
  88  *
  89  * @param txmac
  90  *   Pointer to array of nc_txmac
  91  * @param max_txmac
  92  *   Maximum index of txmac
  93  */
  94 static void
  95 nfb_nc_txmac_deinit(struct nc_txmac *txmac[RTE_MAX_NC_TXMAC],
  96         uint16_t max_txmac)
  97 {
  98         for (; max_txmac > 0; --max_txmac) {
  99                 nc_txmac_close(txmac[max_txmac]);
 100                 txmac[max_txmac] = NULL;
 101         }
 102 }
 103
 104 /**
 105  * DPDK callback to start the device.
 106  *
 107  * Start device by starting all configured queues.
 108  *
 109  * @param dev
 110  *   Pointer to Ethernet device structure.
 111  *
 112  * @return
 113  *   0 on success, a negative errno value otherwise.
 114  */
 115 static int
 116 nfb_eth_dev_start(struct rte_eth_dev *dev)
 117 {
 118         int ret;
 119         uint16_t i;
 120         uint16_t nb_rx = dev->data->nb_rx_queues;
 121         uint16_t nb_tx = dev->data->nb_tx_queues;
 122
 123         for (i = 0; i < nb_rx; i++) {
 124                 ret = nfb_eth_rx_queue_start(dev, i);
 125                 if (ret != 0)
 126                         goto err_rx;
 127         }
 128
 129         for (i = 0; i < nb_tx; i++) {
 130                 ret = nfb_eth_tx_queue_start(dev, i);
 131                 if (ret != 0)
 132                         goto err_tx;
 133         }
 134
 135         return 0;
 136
 137 err_tx:
 138         for (i = 0; i < nb_tx; i++)
 139                 nfb_eth_tx_queue_stop(dev, i);
 140 err_rx:
 141         for (i = 0; i < nb_rx; i++)
 142                 nfb_eth_rx_queue_stop(dev, i);
 143         return ret;
 144 }
 145
 146 /**
 147  * DPDK callback to stop the device.
 148  *
 149  * Stop device by stopping all configured queues.
 150  *
 151  * @param dev
 152  *   Pointer to Ethernet device structure.
 153  */
 154 static void
 155 nfb_eth_dev_stop(struct rte_eth_dev *dev)
 156 {
 157         uint16_t i;
 158         uint16_t nb_rx = dev->data->nb_rx_queues;
 159         uint16_t nb_tx = dev->data->nb_tx_queues;
 160
 161         for (i = 0; i < nb_tx; i++)
 162                 nfb_eth_tx_queue_stop(dev, i);
 163
 164         for (i = 0; i < nb_rx; i++)
 165                 nfb_eth_rx_queue_stop(dev, i);
 166 }
 167
 168 /**
 169  * DPDK callback for Ethernet device configuration.
 170  *
 171  * @param dev
 172  *   Pointer to Ethernet device structure.
 173  *
 174  * @return
 175  *   0 on success, a negative errno value otherwise.
 176  */
 177 static int
 178 nfb_eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
 179 {
 180         return 0;
 181 }
 182
 183 /**
 184  * DPDK callback to get information about the device.
 185  *
 186  * @param dev
 187  *   Pointer to Ethernet device structure.
 188  * @param[out] info
 189  *   Info structure output buffer.
 190  */
 191 static void
 192 nfb_eth_dev_info(struct rte_eth_dev *dev,
 193         struct rte_eth_dev_info *dev_info)
 194 {
 195         dev_info->max_mac_addrs = 1;
 196         dev_info->max_rx_pktlen = (uint32_t)-1;
 197         dev_info->max_rx_queues = dev->data->nb_rx_queues;
 198         dev_info->max_tx_queues = dev->data->nb_tx_queues;
 199         dev_info->speed_capa = ETH_LINK_SPEED_100G;
 200 }
 201
 202 /**
 203  * DPDK callback to close the device.
 204  *
 205  * Destroy all queues and objects, free memory.
 206  *
 207  * @param dev
 208  *   Pointer to Ethernet device structure.
 209  */
 210 static void
 211 nfb_eth_dev_close(struct rte_eth_dev *dev)
 212 {
 213         struct pmd_internals *internals = dev->data->dev_private;
 214         uint16_t i;
 215         uint16_t nb_rx = dev->data->nb_rx_queues;
 216         uint16_t nb_tx = dev->data->nb_tx_queues;
 217
 218         nfb_eth_dev_stop(dev);
 219
 220         nfb_nc_rxmac_deinit(internals->rxmac, internals->max_rxmac);
 221         nfb_nc_txmac_deinit(internals->txmac, internals->max_txmac);
 222
 223         for (i = 0; i < nb_rx; i++) {
 224                 nfb_eth_rx_queue_release(dev->data->rx_queues[i]);
 225                 dev->data->rx_queues[i] = NULL;
 226         }
 227         dev->data->nb_rx_queues = 0;
 228         for (i = 0; i < nb_tx; i++) {
 229                 nfb_eth_tx_queue_release(dev->data->tx_queues[i]);
 230                 dev->data->tx_queues[i] = NULL;
 231         }
 232         dev->data->nb_tx_queues = 0;
 233
 234         rte_free(dev->data->mac_addrs);
 235         dev->data->mac_addrs = NULL;
 236 }
 237
 238 /**
 239  * DPDK callback to retrieve physical link information.
 240  *
 241  * @param dev
 242  *   Pointer to Ethernet device structure.
 243  * @param[out] link
 244  *   Storage for current link status.
 245  *
 246  * @return
 247  *   0 on success, a negative errno value otherwise.
 248  */
 249 static int
 250 nfb_eth_link_update(struct rte_eth_dev *dev,
 251         int wait_to_complete __rte_unused)
 252 {
 253         uint16_t i;
 254         struct nc_rxmac_status status;
 255         struct rte_eth_link link;
 256         memset(&link, 0, sizeof(link));
 257
 258         struct pmd_internals *internals = dev->data->dev_private;
 259
 260         status.speed = MAC_SPEED_UNKNOWN;
 261
 262         link.link_speed = ETH_SPEED_NUM_NONE;
 263         link.link_status = ETH_LINK_DOWN;
 264         link.link_duplex = ETH_LINK_FULL_DUPLEX;
 265         link.link_autoneg = ETH_LINK_SPEED_FIXED;
 266
 267         if (internals->rxmac[0] != NULL) {
 268                 nc_rxmac_read_status(internals->rxmac[0], &status);
 269
 270                 switch (status.speed) {
 271                 case MAC_SPEED_10G:
 272                         link.link_speed = ETH_SPEED_NUM_10G;
 273                         break;
 274                 case MAC_SPEED_40G:
 275                         link.link_speed = ETH_SPEED_NUM_40G;
 276                         break;
 277                 case MAC_SPEED_100G:
 278                         link.link_speed = ETH_SPEED_NUM_100G;
 279                         break;
 280                 default:
 281                         link.link_speed = ETH_SPEED_NUM_NONE;
 282                         break;
 283                 }
 284         }
 285
 286         for (i = 0; i < internals->max_rxmac; ++i) {
 287                 nc_rxmac_read_status(internals->rxmac[i], &status);
 288
 289                 if (status.enabled && status.link_up) {
 290                         link.link_status = ETH_LINK_UP;
 291                         break;
 292                 }
 293         }
 294
 295         rte_eth_linkstatus_set(dev, &link);
 296
 297         return 0;
 298 }
 299
 300 /**
 301  * DPDK callback to bring the link UP.
 302  *
 303  * @param dev
 304  *   Pointer to Ethernet device structure.
 305  *
 306  * @return
 307  *   0 on success, a negative errno value otherwise.
 308  */
 309 static int
 310 nfb_eth_dev_set_link_up(struct rte_eth_dev *dev)
 311 {
 312         struct pmd_internals *internals = (struct pmd_internals *)
 313                 dev->data->dev_private;
 314
 315         uint16_t i;
 316         for (i = 0; i < internals->max_rxmac; ++i)
 317                 nc_rxmac_enable(internals->rxmac[i]);
 318
 319         for (i = 0; i < internals->max_txmac; ++i)
 320                 nc_txmac_enable(internals->txmac[i]);
 321
 322         return 0;
 323 }
 324
 325 /**
 326  * DPDK callback to bring the link DOWN.
 327  *
 328  * @param dev
 329  *   Pointer to Ethernet device structure.
 330  *
 331  * @return
 332  *   0 on success, a negative errno value otherwise.
 333  */
 334 static int
 335 nfb_eth_dev_set_link_down(struct rte_eth_dev *dev)
 336 {
 337         struct pmd_internals *internals = (struct pmd_internals *)
 338                 dev->data->dev_private;
 339
 340         uint16_t i;
 341         for (i = 0; i < internals->max_rxmac; ++i)
 342                 nc_rxmac_disable(internals->rxmac[i]);
 343
 344         for (i = 0; i < internals->max_txmac; ++i)
 345                 nc_txmac_disable(internals->txmac[i]);
 346
 347         return 0;
 348 }
 349
 350 /**
 351  * DPDK callback to set primary MAC address.
 352  *
 353  * @param dev
 354  *   Pointer to Ethernet device structure.
 355  * @param mac_addr
 356  *   MAC address to register.
 357  *
 358  * @return
 359  *   0 on success, a negative errno value otherwise.
 360  */
 361 static int
 362 nfb_eth_mac_addr_set(struct rte_eth_dev *dev,
 363         struct rte_ether_addr *mac_addr)
 364 {
 365         unsigned int i;
 366         uint64_t mac = 0;
 367         struct rte_eth_dev_data *data = dev->data;
 368         struct pmd_internals *internals = (struct pmd_internals *)
 369                 data->dev_private;
 370
 371         if (!rte_is_valid_assigned_ether_addr(mac_addr))
 372                 return -EINVAL;
 373
 374         for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) {
 375                 mac <<= 8;
 376                 mac |= mac_addr->addr_bytes[i] & 0xFF;
 377         }
 378
 379         for (i = 0; i < internals->max_rxmac; ++i)
 380                 nc_rxmac_set_mac(internals->rxmac[i], 0, mac, 1);
 381
 382         rte_ether_addr_copy(mac_addr, data->mac_addrs);
 383         return 0;
 384 }
 385
 386 static const struct eth_dev_ops ops = {
 387         .dev_start = nfb_eth_dev_start,
 388         .dev_stop = nfb_eth_dev_stop,
 389         .dev_set_link_up = nfb_eth_dev_set_link_up,
 390         .dev_set_link_down = nfb_eth_dev_set_link_down,
 391         .dev_close = nfb_eth_dev_close,
 392         .dev_configure = nfb_eth_dev_configure,
 393         .dev_infos_get = nfb_eth_dev_info,
 394         .promiscuous_enable = nfb_eth_promiscuous_enable,
 395         .promiscuous_disable = nfb_eth_promiscuous_disable,
 396         .allmulticast_enable = nfb_eth_allmulticast_enable,
 397         .allmulticast_disable = nfb_eth_allmulticast_disable,
 398         .rx_queue_start = nfb_eth_rx_queue_start,
 399         .rx_queue_stop = nfb_eth_rx_queue_stop,
 400         .tx_queue_start = nfb_eth_tx_queue_start,
 401         .tx_queue_stop = nfb_eth_tx_queue_stop,
 402         .rx_queue_setup = nfb_eth_rx_queue_setup,
 403         .tx_queue_setup = nfb_eth_tx_queue_setup,
 404         .rx_queue_release = nfb_eth_rx_queue_release,
 405         .tx_queue_release = nfb_eth_tx_queue_release,
 406         .link_update = nfb_eth_link_update,
 407         .stats_get = nfb_eth_stats_get,
 408         .stats_reset = nfb_eth_stats_reset,
 409         .mac_addr_set = nfb_eth_mac_addr_set,
 410 };
 411
 412 /**
 413  * DPDK callback to initialize an ethernet device
 414  *
 415  * @param dev
 416  *   Pointer to ethernet device structure
 417  *
 418  * @return
 419  *   0 on success, a negative errno value otherwise.
 420  */
 421 static int
 422 nfb_eth_dev_init(struct rte_eth_dev *dev)
 423 {
 424         struct rte_eth_dev_data *data = dev->data;
 425         struct pmd_internals *internals = (struct pmd_internals *)
 426                 data->dev_private;
 427         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 428         struct rte_pci_addr *pci_addr = &pci_dev->addr;
 429         struct rte_ether_addr eth_addr_init;
 430         struct rte_kvargs *kvlist;
 431
 432         RTE_LOG(INFO, PMD, "Initializing NFB device (" PCI_PRI_FMT ")\n",
 433                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 434                 pci_addr->function);
 435
 436         snprintf(internals->nfb_dev, PATH_MAX,
 437                 "/dev/nfb/by-pci-slot/" PCI_PRI_FMT,
 438                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 439                 pci_addr->function);
 440
 441         /* Check validity of device args */
 442         if (dev->device->devargs != NULL &&
 443                         dev->device->devargs->args != NULL &&
 444                         strlen(dev->device->devargs->args) > 0) {
 445                 kvlist = rte_kvargs_parse(dev->device->devargs->args,
 446                                                 VALID_KEYS);
 447                 if (kvlist == NULL) {
 448                         RTE_LOG(ERR, PMD, "Failed to parse device arguments %s",
 449                                 dev->device->devargs->args);
 450                         rte_kvargs_free(kvlist);
 451                         return -EINVAL;
 452                 }
 453                 rte_kvargs_free(kvlist);
 454         }
 455
 456         /* Let rte_eth_dev_close() release the port resources */
 457         dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
 458
 459         /*
 460          * Get number of available DMA RX and TX queues, which is maximum
 461          * number of queues that can be created and store it in private device
 462          * data structure.
 463          */
 464         internals->nfb = nfb_open(internals->nfb_dev);
 465         if (internals->nfb == NULL) {
 466                 RTE_LOG(ERR, PMD, "nfb_open(): failed to open %s",
 467                         internals->nfb_dev);
 468                 return -EINVAL;
 469         }
 470         data->nb_rx_queues = ndp_get_rx_queue_available_count(internals->nfb);
 471         data->nb_tx_queues = ndp_get_tx_queue_available_count(internals->nfb);
 472
 473         RTE_LOG(INFO, PMD, "Available NDP queues RX: %u TX: %u\n",
 474                 data->nb_rx_queues, data->nb_tx_queues);
 475
 476         nfb_nc_rxmac_init(internals->nfb,
 477                 internals->rxmac,
 478                 &internals->max_rxmac);
 479         nfb_nc_txmac_init(internals->nfb,
 480                 internals->txmac,
 481                 &internals->max_txmac);
 482
 483         /* Set rx, tx burst functions */
 484         dev->rx_pkt_burst = nfb_eth_ndp_rx;
 485         dev->tx_pkt_burst = nfb_eth_ndp_tx;
 486
 487         /* Set function callbacks for Ethernet API */
 488         dev->dev_ops = &ops;
 489
 490         /* Get link state */
 491         nfb_eth_link_update(dev, 0);
 492
 493         /* Allocate space for one mac address */
 494         data->mac_addrs = rte_zmalloc(data->name, sizeof(struct rte_ether_addr),
 495                 RTE_CACHE_LINE_SIZE);
 496         if (data->mac_addrs == NULL) {
 497                 RTE_LOG(ERR, PMD, "Could not alloc space for MAC address!\n");
 498                 nfb_close(internals->nfb);
 499                 return -EINVAL;
 500         }
 501
 502         rte_eth_random_addr(eth_addr_init.addr_bytes);
 503         eth_addr_init.addr_bytes[0] = eth_addr.addr_bytes[0];
 504         eth_addr_init.addr_bytes[1] = eth_addr.addr_bytes[1];
 505         eth_addr_init.addr_bytes[2] = eth_addr.addr_bytes[2];
 506
 507         nfb_eth_mac_addr_set(dev, &eth_addr_init);
 508
 509         data->promiscuous = nfb_eth_promiscuous_get(dev);
 510         data->all_multicast = nfb_eth_allmulticast_get(dev);
 511         internals->rx_filter_original = data->promiscuous;
 512
 513         RTE_LOG(INFO, PMD, "NFB device ("
 514                 PCI_PRI_FMT ") successfully initialized\n",
 515                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 516                 pci_addr->function);
 517
 518         return 0;
 519 }
 520
 521 /**
 522  * DPDK callback to uninitialize an ethernet device
 523  *
 524  * @param dev
 525  *   Pointer to ethernet device structure
 526  *
 527  * @return
 528  *   0 on success, a negative errno value otherwise.
 529  */
 530 static int
 531 nfb_eth_dev_uninit(struct rte_eth_dev *dev)
 532 {
 533         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 534         struct rte_pci_addr *pci_addr = &pci_dev->addr;
 535
 536         nfb_eth_dev_close(dev);
 537
 538         RTE_LOG(INFO, PMD, "NFB device ("
 539                 PCI_PRI_FMT ") successfully uninitialized\n",
 540                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 541                 pci_addr->function);
 542
 543         return 0;
 544 }
 545
 546 static const struct rte_pci_id nfb_pci_id_table[] = {
 547         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_40G2) },
 548         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_100G2) },
 549         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_200G2QL) },
 550         { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3) },
 551         { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3D) },
 552         { .vendor_id = 0, }
 553 };
 554
 555 /**
 556  * DPDK callback to register a PCI device.
 557  *
 558  * This function spawns Ethernet devices out of a given PCI device.
 559  *
 560  * @param[in] pci_drv
 561  *   PCI driver structure (nfb_driver).
 562  * @param[in] pci_dev
 563  *   PCI device information.
 564  *
 565  * @return
 566  *   0 on success, a negative errno value otherwise.
 567  */
 568 static int
 569 nfb_eth_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 570                 struct rte_pci_device *pci_dev)
 571 {
 572         return rte_eth_dev_pci_generic_probe(pci_dev,
 573                 sizeof(struct pmd_internals), nfb_eth_dev_init);
 574 }
 575
 576 /**
 577  * DPDK callback to remove a PCI device.
 578  *
 579  * This function removes all Ethernet devices belong to a given PCI device.
 580  *
 581  * @param[in] pci_dev
 582  *   Pointer to the PCI device.
 583  *
 584  * @return
 585  *   0 on success, the function cannot fail.
 586  */
 587 static int
 588 nfb_eth_pci_remove(struct rte_pci_device *pci_dev)
 589 {
 590         return rte_eth_dev_pci_generic_remove(pci_dev, nfb_eth_dev_uninit);
 591 }
 592
 593 static struct rte_pci_driver nfb_eth_driver = {
 594         .id_table = nfb_pci_id_table,
 595         .probe = nfb_eth_pci_probe,
 596         .remove = nfb_eth_pci_remove,
 597 };
 598
 599 RTE_PMD_REGISTER_PCI(RTE_NFB_DRIVER_NAME, nfb_eth_driver);
 600 RTE_PMD_REGISTER_PCI_TABLE(RTE_NFB_DRIVER_NAME, nfb_pci_id_table);
 601 RTE_PMD_REGISTER_KMOD_DEP(RTE_NFB_DRIVER_NAME, "* nfb");
 602 RTE_PMD_REGISTER_PARAM_STRING(RTE_NFB_DRIVER_NAME, TIMESTAMP_ARG "=<0|1>");