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         uint16_t i;
 214         uint16_t nb_rx = dev->data->nb_rx_queues;
 215         uint16_t nb_tx = dev->data->nb_tx_queues;
 216
 217         nfb_eth_dev_stop(dev);
 218
 219         for (i = 0; i < nb_rx; i++) {
 220                 nfb_eth_rx_queue_release(dev->data->rx_queues[i]);
 221                 dev->data->rx_queues[i] = NULL;
 222         }
 223         dev->data->nb_rx_queues = 0;
 224         for (i = 0; i < nb_tx; i++) {
 225                 nfb_eth_tx_queue_release(dev->data->tx_queues[i]);
 226                 dev->data->tx_queues[i] = NULL;
 227         }
 228         dev->data->nb_tx_queues = 0;
 229 }
 230
 231 /**
 232  * DPDK callback to retrieve physical link information.
 233  *
 234  * @param dev
 235  *   Pointer to Ethernet device structure.
 236  * @param[out] link
 237  *   Storage for current link status.
 238  *
 239  * @return
 240  *   0 on success, a negative errno value otherwise.
 241  */
 242 static int
 243 nfb_eth_link_update(struct rte_eth_dev *dev,
 244         int wait_to_complete __rte_unused)
 245 {
 246         uint16_t i;
 247         struct nc_rxmac_status status;
 248         struct rte_eth_link link;
 249         memset(&link, 0, sizeof(link));
 250
 251         struct pmd_internals *internals = dev->data->dev_private;
 252
 253         status.speed = MAC_SPEED_UNKNOWN;
 254
 255         link.link_speed = ETH_SPEED_NUM_NONE;
 256         link.link_status = ETH_LINK_DOWN;
 257         link.link_duplex = ETH_LINK_FULL_DUPLEX;
 258         link.link_autoneg = ETH_LINK_SPEED_FIXED;
 259
 260         if (internals->rxmac[0] != NULL) {
 261                 nc_rxmac_read_status(internals->rxmac[0], &status);
 262
 263                 switch (status.speed) {
 264                 case MAC_SPEED_10G:
 265                         link.link_speed = ETH_SPEED_NUM_10G;
 266                         break;
 267                 case MAC_SPEED_40G:
 268                         link.link_speed = ETH_SPEED_NUM_40G;
 269                         break;
 270                 case MAC_SPEED_100G:
 271                         link.link_speed = ETH_SPEED_NUM_100G;
 272                         break;
 273                 default:
 274                         link.link_speed = ETH_SPEED_NUM_NONE;
 275                         break;
 276                 }
 277         }
 278
 279         for (i = 0; i < internals->max_rxmac; ++i) {
 280                 nc_rxmac_read_status(internals->rxmac[i], &status);
 281
 282                 if (status.enabled && status.link_up) {
 283                         link.link_status = ETH_LINK_UP;
 284                         break;
 285                 }
 286         }
 287
 288         rte_eth_linkstatus_set(dev, &link);
 289
 290         return 0;
 291 }
 292
 293 /**
 294  * DPDK callback to bring the link UP.
 295  *
 296  * @param dev
 297  *   Pointer to Ethernet device structure.
 298  *
 299  * @return
 300  *   0 on success, a negative errno value otherwise.
 301  */
 302 static int
 303 nfb_eth_dev_set_link_up(struct rte_eth_dev *dev)
 304 {
 305         struct pmd_internals *internals = (struct pmd_internals *)
 306                 dev->data->dev_private;
 307
 308         uint16_t i;
 309         for (i = 0; i < internals->max_rxmac; ++i)
 310                 nc_rxmac_enable(internals->rxmac[i]);
 311
 312         for (i = 0; i < internals->max_txmac; ++i)
 313                 nc_txmac_enable(internals->txmac[i]);
 314
 315         return 0;
 316 }
 317
 318 /**
 319  * DPDK callback to bring the link DOWN.
 320  *
 321  * @param dev
 322  *   Pointer to Ethernet device structure.
 323  *
 324  * @return
 325  *   0 on success, a negative errno value otherwise.
 326  */
 327 static int
 328 nfb_eth_dev_set_link_down(struct rte_eth_dev *dev)
 329 {
 330         struct pmd_internals *internals = (struct pmd_internals *)
 331                 dev->data->dev_private;
 332
 333         uint16_t i;
 334         for (i = 0; i < internals->max_rxmac; ++i)
 335                 nc_rxmac_disable(internals->rxmac[i]);
 336
 337         for (i = 0; i < internals->max_txmac; ++i)
 338                 nc_txmac_disable(internals->txmac[i]);
 339
 340         return 0;
 341 }
 342
 343 /**
 344  * DPDK callback to set primary MAC address.
 345  *
 346  * @param dev
 347  *   Pointer to Ethernet device structure.
 348  * @param mac_addr
 349  *   MAC address to register.
 350  *
 351  * @return
 352  *   0 on success, a negative errno value otherwise.
 353  */
 354 static int
 355 nfb_eth_mac_addr_set(struct rte_eth_dev *dev,
 356         struct rte_ether_addr *mac_addr)
 357 {
 358         unsigned int i;
 359         uint64_t mac = 0;
 360         struct rte_eth_dev_data *data = dev->data;
 361         struct pmd_internals *internals = (struct pmd_internals *)
 362                 data->dev_private;
 363
 364         if (!rte_is_valid_assigned_ether_addr(mac_addr))
 365                 return -EINVAL;
 366
 367         for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) {
 368                 mac <<= 8;
 369                 mac |= mac_addr->addr_bytes[i] & 0xFF;
 370         }
 371
 372         for (i = 0; i < internals->max_rxmac; ++i)
 373                 nc_rxmac_set_mac(internals->rxmac[i], 0, mac, 1);
 374
 375         rte_ether_addr_copy(mac_addr, data->mac_addrs);
 376         return 0;
 377 }
 378
 379 static const struct eth_dev_ops ops = {
 380         .dev_start = nfb_eth_dev_start,
 381         .dev_stop = nfb_eth_dev_stop,
 382         .dev_set_link_up = nfb_eth_dev_set_link_up,
 383         .dev_set_link_down = nfb_eth_dev_set_link_down,
 384         .dev_close = nfb_eth_dev_close,
 385         .dev_configure = nfb_eth_dev_configure,
 386         .dev_infos_get = nfb_eth_dev_info,
 387         .promiscuous_enable = nfb_eth_promiscuous_enable,
 388         .promiscuous_disable = nfb_eth_promiscuous_disable,
 389         .allmulticast_enable = nfb_eth_allmulticast_enable,
 390         .allmulticast_disable = nfb_eth_allmulticast_disable,
 391         .rx_queue_start = nfb_eth_rx_queue_start,
 392         .rx_queue_stop = nfb_eth_rx_queue_stop,
 393         .tx_queue_start = nfb_eth_tx_queue_start,
 394         .tx_queue_stop = nfb_eth_tx_queue_stop,
 395         .rx_queue_setup = nfb_eth_rx_queue_setup,
 396         .tx_queue_setup = nfb_eth_tx_queue_setup,
 397         .rx_queue_release = nfb_eth_rx_queue_release,
 398         .tx_queue_release = nfb_eth_tx_queue_release,
 399         .link_update = nfb_eth_link_update,
 400         .stats_get = nfb_eth_stats_get,
 401         .stats_reset = nfb_eth_stats_reset,
 402         .mac_addr_set = nfb_eth_mac_addr_set,
 403 };
 404
 405 /**
 406  * DPDK callback to initialize an ethernet device
 407  *
 408  * @param dev
 409  *   Pointer to ethernet device structure
 410  *
 411  * @return
 412  *   0 on success, a negative errno value otherwise.
 413  */
 414 static int
 415 nfb_eth_dev_init(struct rte_eth_dev *dev)
 416 {
 417         struct rte_eth_dev_data *data = dev->data;
 418         struct pmd_internals *internals = (struct pmd_internals *)
 419                 data->dev_private;
 420         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 421         struct rte_pci_addr *pci_addr = &pci_dev->addr;
 422         struct rte_ether_addr eth_addr_init;
 423         struct rte_kvargs *kvlist;
 424
 425         RTE_LOG(INFO, PMD, "Initializing NFB device (" PCI_PRI_FMT ")\n",
 426                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 427                 pci_addr->function);
 428
 429         snprintf(internals->nfb_dev, PATH_MAX,
 430                 "/dev/nfb/by-pci-slot/" PCI_PRI_FMT,
 431                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 432                 pci_addr->function);
 433
 434         /* Check validity of device args */
 435         if (dev->device->devargs != NULL &&
 436                         dev->device->devargs->args != NULL &&
 437                         strlen(dev->device->devargs->args) > 0) {
 438                 kvlist = rte_kvargs_parse(dev->device->devargs->args,
 439                                                 VALID_KEYS);
 440                 if (kvlist == NULL) {
 441                         RTE_LOG(ERR, PMD, "Failed to parse device arguments %s",
 442                                 dev->device->devargs->args);
 443                         rte_kvargs_free(kvlist);
 444                         return -EINVAL;
 445                 }
 446                 rte_kvargs_free(kvlist);
 447         }
 448
 449         /*
 450          * Get number of available DMA RX and TX queues, which is maximum
 451          * number of queues that can be created and store it in private device
 452          * data structure.
 453          */
 454         internals->nfb = nfb_open(internals->nfb_dev);
 455         if (internals->nfb == NULL) {
 456                 RTE_LOG(ERR, PMD, "nfb_open(): failed to open %s",
 457                         internals->nfb_dev);
 458                 return -EINVAL;
 459         }
 460         data->nb_rx_queues = ndp_get_rx_queue_available_count(internals->nfb);
 461         data->nb_tx_queues = ndp_get_tx_queue_available_count(internals->nfb);
 462
 463         RTE_LOG(INFO, PMD, "Available NDP queues RX: %u TX: %u\n",
 464                 data->nb_rx_queues, data->nb_tx_queues);
 465
 466         nfb_nc_rxmac_init(internals->nfb,
 467                 internals->rxmac,
 468                 &internals->max_rxmac);
 469         nfb_nc_txmac_init(internals->nfb,
 470                 internals->txmac,
 471                 &internals->max_txmac);
 472
 473         /* Set rx, tx burst functions */
 474         dev->rx_pkt_burst = nfb_eth_ndp_rx;
 475         dev->tx_pkt_burst = nfb_eth_ndp_tx;
 476
 477         /* Set function callbacks for Ethernet API */
 478         dev->dev_ops = &ops;
 479
 480         /* Get link state */
 481         nfb_eth_link_update(dev, 0);
 482
 483         /* Allocate space for one mac address */
 484         data->mac_addrs = rte_zmalloc(data->name, sizeof(struct rte_ether_addr),
 485                 RTE_CACHE_LINE_SIZE);
 486         if (data->mac_addrs == NULL) {
 487                 RTE_LOG(ERR, PMD, "Could not alloc space for MAC address!\n");
 488                 nfb_close(internals->nfb);
 489                 return -EINVAL;
 490         }
 491
 492         rte_eth_random_addr(eth_addr_init.addr_bytes);
 493         eth_addr_init.addr_bytes[0] = eth_addr.addr_bytes[0];
 494         eth_addr_init.addr_bytes[1] = eth_addr.addr_bytes[1];
 495         eth_addr_init.addr_bytes[2] = eth_addr.addr_bytes[2];
 496
 497         nfb_eth_mac_addr_set(dev, &eth_addr_init);
 498
 499         data->promiscuous = nfb_eth_promiscuous_get(dev);
 500         data->all_multicast = nfb_eth_allmulticast_get(dev);
 501         internals->rx_filter_original = data->promiscuous;
 502
 503         RTE_LOG(INFO, PMD, "NFB device ("
 504                 PCI_PRI_FMT ") successfully initialized\n",
 505                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 506                 pci_addr->function);
 507
 508         return 0;
 509 }
 510
 511 /**
 512  * DPDK callback to uninitialize an ethernet device
 513  *
 514  * @param dev
 515  *   Pointer to ethernet device structure
 516  *
 517  * @return
 518  *   0 on success, a negative errno value otherwise.
 519  */
 520 static int
 521 nfb_eth_dev_uninit(struct rte_eth_dev *dev)
 522 {
 523         struct rte_eth_dev_data *data = dev->data;
 524         struct pmd_internals *internals = (struct pmd_internals *)
 525                 data->dev_private;
 526
 527         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 528         struct rte_pci_addr *pci_addr = &pci_dev->addr;
 529
 530         nfb_nc_rxmac_deinit(internals->rxmac, internals->max_rxmac);
 531         nfb_nc_txmac_deinit(internals->txmac, internals->max_txmac);
 532
 533         RTE_LOG(INFO, PMD, "NFB device ("
 534                 PCI_PRI_FMT ") successfully uninitialized\n",
 535                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 536                 pci_addr->function);
 537
 538         return 0;
 539 }
 540
 541 static const struct rte_pci_id nfb_pci_id_table[] = {
 542         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_40G2) },
 543         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_100G2) },
 544         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_200G2QL) },
 545         { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3) },
 546         { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3D) },
 547         { .vendor_id = 0, }
 548 };
 549
 550 /**
 551  * DPDK callback to register a PCI device.
 552  *
 553  * This function spawns Ethernet devices out of a given PCI device.
 554  *
 555  * @param[in] pci_drv
 556  *   PCI driver structure (nfb_driver).
 557  * @param[in] pci_dev
 558  *   PCI device information.
 559  *
 560  * @return
 561  *   0 on success, a negative errno value otherwise.
 562  */
 563 static int
 564 nfb_eth_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 565                 struct rte_pci_device *pci_dev)
 566 {
 567         return rte_eth_dev_pci_generic_probe(pci_dev,
 568                 sizeof(struct pmd_internals), nfb_eth_dev_init);
 569 }
 570
 571 /**
 572  * DPDK callback to remove a PCI device.
 573  *
 574  * This function removes all Ethernet devices belong to a given PCI device.
 575  *
 576  * @param[in] pci_dev
 577  *   Pointer to the PCI device.
 578  *
 579  * @return
 580  *   0 on success, the function cannot fail.
 581  */
 582 static int
 583 nfb_eth_pci_remove(struct rte_pci_device *pci_dev)
 584 {
 585         return rte_eth_dev_pci_generic_remove(pci_dev, nfb_eth_dev_uninit);
 586 }
 587
 588 static struct rte_pci_driver nfb_eth_driver = {
 589         .id_table = nfb_pci_id_table,
 590         .probe = nfb_eth_pci_probe,
 591         .remove = nfb_eth_pci_remove,
 592 };
 593
 594 RTE_PMD_REGISTER_PCI(RTE_NFB_DRIVER_NAME, nfb_eth_driver);
 595 RTE_PMD_REGISTER_PCI_TABLE(RTE_NFB_DRIVER_NAME, nfb_pci_id_table);
 596 RTE_PMD_REGISTER_KMOD_DEP(RTE_NFB_DRIVER_NAME, "* nfb");
 597 RTE_PMD_REGISTER_PARAM_STRING(RTE_NFB_DRIVER_NAME, TIMESTAMP_ARG "=<0|1>");