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