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 int
 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         return 0;
 202 }
 203
 204 /**
 205  * DPDK callback to close the device.
 206  *
 207  * Destroy all queues and objects, free memory.
 208  *
 209  * @param dev
 210  *   Pointer to Ethernet device structure.
 211  */
 212 static int
 213 nfb_eth_dev_close(struct rte_eth_dev *dev)
 214 {
 215         struct pmd_internals *internals = dev->data->dev_private;
 216         uint16_t i;
 217         uint16_t nb_rx = dev->data->nb_rx_queues;
 218         uint16_t nb_tx = dev->data->nb_tx_queues;
 219
 220         nfb_eth_dev_stop(dev);
 221
 222         nfb_nc_rxmac_deinit(internals->rxmac, internals->max_rxmac);
 223         nfb_nc_txmac_deinit(internals->txmac, internals->max_txmac);
 224
 225         for (i = 0; i < nb_rx; i++) {
 226                 nfb_eth_rx_queue_release(dev->data->rx_queues[i]);
 227                 dev->data->rx_queues[i] = NULL;
 228         }
 229         dev->data->nb_rx_queues = 0;
 230         for (i = 0; i < nb_tx; i++) {
 231                 nfb_eth_tx_queue_release(dev->data->tx_queues[i]);
 232                 dev->data->tx_queues[i] = NULL;
 233         }
 234         dev->data->nb_tx_queues = 0;
 235
 236         rte_free(dev->data->mac_addrs);
 237         dev->data->mac_addrs = NULL;
 238
 239         return 0;
 240 }
 241
 242 /**
 243  * DPDK callback to retrieve physical link information.
 244  *
 245  * @param dev
 246  *   Pointer to Ethernet device structure.
 247  * @param[out] link
 248  *   Storage for current link status.
 249  *
 250  * @return
 251  *   0 on success, a negative errno value otherwise.
 252  */
 253 static int
 254 nfb_eth_link_update(struct rte_eth_dev *dev,
 255         int wait_to_complete __rte_unused)
 256 {
 257         uint16_t i;
 258         struct nc_rxmac_status status;
 259         struct rte_eth_link link;
 260         memset(&link, 0, sizeof(link));
 261
 262         struct pmd_internals *internals = dev->data->dev_private;
 263
 264         status.speed = MAC_SPEED_UNKNOWN;
 265
 266         link.link_speed = ETH_SPEED_NUM_NONE;
 267         link.link_status = ETH_LINK_DOWN;
 268         link.link_duplex = ETH_LINK_FULL_DUPLEX;
 269         link.link_autoneg = ETH_LINK_SPEED_FIXED;
 270
 271         if (internals->rxmac[0] != NULL) {
 272                 nc_rxmac_read_status(internals->rxmac[0], &status);
 273
 274                 switch (status.speed) {
 275                 case MAC_SPEED_10G:
 276                         link.link_speed = ETH_SPEED_NUM_10G;
 277                         break;
 278                 case MAC_SPEED_40G:
 279                         link.link_speed = ETH_SPEED_NUM_40G;
 280                         break;
 281                 case MAC_SPEED_100G:
 282                         link.link_speed = ETH_SPEED_NUM_100G;
 283                         break;
 284                 default:
 285                         link.link_speed = ETH_SPEED_NUM_NONE;
 286                         break;
 287                 }
 288         }
 289
 290         for (i = 0; i < internals->max_rxmac; ++i) {
 291                 nc_rxmac_read_status(internals->rxmac[i], &status);
 292
 293                 if (status.enabled && status.link_up) {
 294                         link.link_status = ETH_LINK_UP;
 295                         break;
 296                 }
 297         }
 298
 299         rte_eth_linkstatus_set(dev, &link);
 300
 301         return 0;
 302 }
 303
 304 /**
 305  * DPDK callback to bring the link UP.
 306  *
 307  * @param dev
 308  *   Pointer to Ethernet device structure.
 309  *
 310  * @return
 311  *   0 on success, a negative errno value otherwise.
 312  */
 313 static int
 314 nfb_eth_dev_set_link_up(struct rte_eth_dev *dev)
 315 {
 316         struct pmd_internals *internals = (struct pmd_internals *)
 317                 dev->data->dev_private;
 318
 319         uint16_t i;
 320         for (i = 0; i < internals->max_rxmac; ++i)
 321                 nc_rxmac_enable(internals->rxmac[i]);
 322
 323         for (i = 0; i < internals->max_txmac; ++i)
 324                 nc_txmac_enable(internals->txmac[i]);
 325
 326         return 0;
 327 }
 328
 329 /**
 330  * DPDK callback to bring the link DOWN.
 331  *
 332  * @param dev
 333  *   Pointer to Ethernet device structure.
 334  *
 335  * @return
 336  *   0 on success, a negative errno value otherwise.
 337  */
 338 static int
 339 nfb_eth_dev_set_link_down(struct rte_eth_dev *dev)
 340 {
 341         struct pmd_internals *internals = (struct pmd_internals *)
 342                 dev->data->dev_private;
 343
 344         uint16_t i;
 345         for (i = 0; i < internals->max_rxmac; ++i)
 346                 nc_rxmac_disable(internals->rxmac[i]);
 347
 348         for (i = 0; i < internals->max_txmac; ++i)
 349                 nc_txmac_disable(internals->txmac[i]);
 350
 351         return 0;
 352 }
 353
 354 /**
 355  * DPDK callback to set primary MAC address.
 356  *
 357  * @param dev
 358  *   Pointer to Ethernet device structure.
 359  * @param mac_addr
 360  *   MAC address to register.
 361  *
 362  * @return
 363  *   0 on success, a negative errno value otherwise.
 364  */
 365 static int
 366 nfb_eth_mac_addr_set(struct rte_eth_dev *dev,
 367         struct rte_ether_addr *mac_addr)
 368 {
 369         unsigned int i;
 370         uint64_t mac = 0;
 371         struct rte_eth_dev_data *data = dev->data;
 372         struct pmd_internals *internals = (struct pmd_internals *)
 373                 data->dev_private;
 374
 375         if (!rte_is_valid_assigned_ether_addr(mac_addr))
 376                 return -EINVAL;
 377
 378         for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) {
 379                 mac <<= 8;
 380                 mac |= mac_addr->addr_bytes[i] & 0xFF;
 381         }
 382
 383         for (i = 0; i < internals->max_rxmac; ++i)
 384                 nc_rxmac_set_mac(internals->rxmac[i], 0, mac, 1);
 385
 386         rte_ether_addr_copy(mac_addr, data->mac_addrs);
 387         return 0;
 388 }
 389
 390 static const struct eth_dev_ops ops = {
 391         .dev_start = nfb_eth_dev_start,
 392         .dev_stop = nfb_eth_dev_stop,
 393         .dev_set_link_up = nfb_eth_dev_set_link_up,
 394         .dev_set_link_down = nfb_eth_dev_set_link_down,
 395         .dev_close = nfb_eth_dev_close,
 396         .dev_configure = nfb_eth_dev_configure,
 397         .dev_infos_get = nfb_eth_dev_info,
 398         .promiscuous_enable = nfb_eth_promiscuous_enable,
 399         .promiscuous_disable = nfb_eth_promiscuous_disable,
 400         .allmulticast_enable = nfb_eth_allmulticast_enable,
 401         .allmulticast_disable = nfb_eth_allmulticast_disable,
 402         .rx_queue_start = nfb_eth_rx_queue_start,
 403         .rx_queue_stop = nfb_eth_rx_queue_stop,
 404         .tx_queue_start = nfb_eth_tx_queue_start,
 405         .tx_queue_stop = nfb_eth_tx_queue_stop,
 406         .rx_queue_setup = nfb_eth_rx_queue_setup,
 407         .tx_queue_setup = nfb_eth_tx_queue_setup,
 408         .rx_queue_release = nfb_eth_rx_queue_release,
 409         .tx_queue_release = nfb_eth_tx_queue_release,
 410         .link_update = nfb_eth_link_update,
 411         .stats_get = nfb_eth_stats_get,
 412         .stats_reset = nfb_eth_stats_reset,
 413         .mac_addr_set = nfb_eth_mac_addr_set,
 414 };
 415
 416 /**
 417  * DPDK callback to initialize an ethernet device
 418  *
 419  * @param dev
 420  *   Pointer to ethernet device structure
 421  *
 422  * @return
 423  *   0 on success, a negative errno value otherwise.
 424  */
 425 static int
 426 nfb_eth_dev_init(struct rte_eth_dev *dev)
 427 {
 428         struct rte_eth_dev_data *data = dev->data;
 429         struct pmd_internals *internals = (struct pmd_internals *)
 430                 data->dev_private;
 431         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 432         struct rte_pci_addr *pci_addr = &pci_dev->addr;
 433         struct rte_ether_addr eth_addr_init;
 434         struct rte_kvargs *kvlist;
 435
 436         RTE_LOG(INFO, PMD, "Initializing NFB device (" PCI_PRI_FMT ")\n",
 437                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 438                 pci_addr->function);
 439
 440         snprintf(internals->nfb_dev, PATH_MAX,
 441                 "/dev/nfb/by-pci-slot/" PCI_PRI_FMT,
 442                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 443                 pci_addr->function);
 444
 445         /* Check validity of device args */
 446         if (dev->device->devargs != NULL &&
 447                         dev->device->devargs->args != NULL &&
 448                         strlen(dev->device->devargs->args) > 0) {
 449                 kvlist = rte_kvargs_parse(dev->device->devargs->args,
 450                                                 VALID_KEYS);
 451                 if (kvlist == NULL) {
 452                         RTE_LOG(ERR, PMD, "Failed to parse device arguments %s",
 453                                 dev->device->devargs->args);
 454                         rte_kvargs_free(kvlist);
 455                         return -EINVAL;
 456                 }
 457                 rte_kvargs_free(kvlist);
 458         }
 459
 460         /*
 461          * Get number of available DMA RX and TX queues, which is maximum
 462          * number of queues that can be created and store it in private device
 463          * data structure.
 464          */
 465         internals->nfb = nfb_open(internals->nfb_dev);
 466         if (internals->nfb == NULL) {
 467                 RTE_LOG(ERR, PMD, "nfb_open(): failed to open %s",
 468                         internals->nfb_dev);
 469                 return -EINVAL;
 470         }
 471         data->nb_rx_queues = ndp_get_rx_queue_available_count(internals->nfb);
 472         data->nb_tx_queues = ndp_get_tx_queue_available_count(internals->nfb);
 473
 474         RTE_LOG(INFO, PMD, "Available NDP queues RX: %u TX: %u\n",
 475                 data->nb_rx_queues, data->nb_tx_queues);
 476
 477         nfb_nc_rxmac_init(internals->nfb,
 478                 internals->rxmac,
 479                 &internals->max_rxmac);
 480         nfb_nc_txmac_init(internals->nfb,
 481                 internals->txmac,
 482                 &internals->max_txmac);
 483
 484         /* Set rx, tx burst functions */
 485         dev->rx_pkt_burst = nfb_eth_ndp_rx;
 486         dev->tx_pkt_burst = nfb_eth_ndp_tx;
 487
 488         /* Set function callbacks for Ethernet API */
 489         dev->dev_ops = &ops;
 490
 491         /* Get link state */
 492         nfb_eth_link_update(dev, 0);
 493
 494         /* Allocate space for one mac address */
 495         data->mac_addrs = rte_zmalloc(data->name, sizeof(struct rte_ether_addr),
 496                 RTE_CACHE_LINE_SIZE);
 497         if (data->mac_addrs == NULL) {
 498                 RTE_LOG(ERR, PMD, "Could not alloc space for MAC address!\n");
 499                 nfb_close(internals->nfb);
 500                 return -EINVAL;
 501         }
 502
 503         rte_eth_random_addr(eth_addr_init.addr_bytes);
 504         eth_addr_init.addr_bytes[0] = eth_addr.addr_bytes[0];
 505         eth_addr_init.addr_bytes[1] = eth_addr.addr_bytes[1];
 506         eth_addr_init.addr_bytes[2] = eth_addr.addr_bytes[2];
 507
 508         nfb_eth_mac_addr_set(dev, &eth_addr_init);
 509
 510         data->promiscuous = nfb_eth_promiscuous_get(dev);
 511         data->all_multicast = nfb_eth_allmulticast_get(dev);
 512         internals->rx_filter_original = data->promiscuous;
 513
 514         RTE_LOG(INFO, PMD, "NFB device ("
 515                 PCI_PRI_FMT ") successfully initialized\n",
 516                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 517                 pci_addr->function);
 518
 519         return 0;
 520 }
 521
 522 /**
 523  * DPDK callback to uninitialize an ethernet device
 524  *
 525  * @param dev
 526  *   Pointer to ethernet device structure
 527  *
 528  * @return
 529  *   0 on success, a negative errno value otherwise.
 530  */
 531 static int
 532 nfb_eth_dev_uninit(struct rte_eth_dev *dev)
 533 {
 534         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 535         struct rte_pci_addr *pci_addr = &pci_dev->addr;
 536
 537         nfb_eth_dev_close(dev);
 538
 539         RTE_LOG(INFO, PMD, "NFB device ("
 540                 PCI_PRI_FMT ") successfully uninitialized\n",
 541                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 542                 pci_addr->function);
 543
 544         return 0;
 545 }
 546
 547 static const struct rte_pci_id nfb_pci_id_table[] = {
 548         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_40G2) },
 549         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_100G2) },
 550         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_200G2QL) },
 551         { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3) },
 552         { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3D) },
 553         { .vendor_id = 0, }
 554 };
 555
 556 /**
 557  * DPDK callback to register a PCI device.
 558  *
 559  * This function spawns Ethernet devices out of a given PCI device.
 560  *
 561  * @param[in] pci_drv
 562  *   PCI driver structure (nfb_driver).
 563  * @param[in] pci_dev
 564  *   PCI device information.
 565  *
 566  * @return
 567  *   0 on success, a negative errno value otherwise.
 568  */
 569 static int
 570 nfb_eth_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 571                 struct rte_pci_device *pci_dev)
 572 {
 573         return rte_eth_dev_pci_generic_probe(pci_dev,
 574                 sizeof(struct pmd_internals), nfb_eth_dev_init);
 575 }
 576
 577 /**
 578  * DPDK callback to remove a PCI device.
 579  *
 580  * This function removes all Ethernet devices belong to a given PCI device.
 581  *
 582  * @param[in] pci_dev
 583  *   Pointer to the PCI device.
 584  *
 585  * @return
 586  *   0 on success, the function cannot fail.
 587  */
 588 static int
 589 nfb_eth_pci_remove(struct rte_pci_device *pci_dev)
 590 {
 591         return rte_eth_dev_pci_generic_remove(pci_dev, nfb_eth_dev_uninit);
 592 }
 593
 594 static struct rte_pci_driver nfb_eth_driver = {
 595         .id_table = nfb_pci_id_table,
 596         .probe = nfb_eth_pci_probe,
 597         .remove = nfb_eth_pci_remove,
 598 };
 599
 600 RTE_PMD_REGISTER_PCI(RTE_NFB_DRIVER_NAME, nfb_eth_driver);
 601 RTE_PMD_REGISTER_PCI_TABLE(RTE_NFB_DRIVER_NAME, nfb_pci_id_table);
 602 RTE_PMD_REGISTER_KMOD_DEP(RTE_NFB_DRIVER_NAME, "* nfb");
 603 RTE_PMD_REGISTER_PARAM_STRING(RTE_NFB_DRIVER_NAME, TIMESTAMP_ARG "=<0|1>");