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         dev->data->dev_started = 0;
 162
 163         for (i = 0; i < nb_tx; i++)
 164                 nfb_eth_tx_queue_stop(dev, i);
 165
 166         for (i = 0; i < nb_rx; i++)
 167                 nfb_eth_rx_queue_stop(dev, i);
 168 }
 169
 170 /**
 171  * DPDK callback for Ethernet device configuration.
 172  *
 173  * @param dev
 174  *   Pointer to Ethernet device structure.
 175  *
 176  * @return
 177  *   0 on success, a negative errno value otherwise.
 178  */
 179 static int
 180 nfb_eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
 181 {
 182         return 0;
 183 }
 184
 185 /**
 186  * DPDK callback to get information about the device.
 187  *
 188  * @param dev
 189  *   Pointer to Ethernet device structure.
 190  * @param[out] info
 191  *   Info structure output buffer.
 192  */
 193 static int
 194 nfb_eth_dev_info(struct rte_eth_dev *dev,
 195         struct rte_eth_dev_info *dev_info)
 196 {
 197         dev_info->max_mac_addrs = 1;
 198         dev_info->max_rx_pktlen = (uint32_t)-1;
 199         dev_info->max_rx_queues = dev->data->nb_rx_queues;
 200         dev_info->max_tx_queues = dev->data->nb_tx_queues;
 201         dev_info->speed_capa = ETH_LINK_SPEED_100G;
 202
 203         return 0;
 204 }
 205
 206 /**
 207  * DPDK callback to close the device.
 208  *
 209  * Destroy all queues and objects, free memory.
 210  *
 211  * @param dev
 212  *   Pointer to Ethernet device structure.
 213  */
 214 static int
 215 nfb_eth_dev_close(struct rte_eth_dev *dev)
 216 {
 217         struct pmd_internals *internals = dev->data->dev_private;
 218         uint16_t i;
 219         uint16_t nb_rx = dev->data->nb_rx_queues;
 220         uint16_t nb_tx = dev->data->nb_tx_queues;
 221
 222         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 223                 return 0;
 224
 225         nfb_eth_dev_stop(dev);
 226
 227         nfb_nc_rxmac_deinit(internals->rxmac, internals->max_rxmac);
 228         nfb_nc_txmac_deinit(internals->txmac, internals->max_txmac);
 229
 230         for (i = 0; i < nb_rx; i++) {
 231                 nfb_eth_rx_queue_release(dev->data->rx_queues[i]);
 232                 dev->data->rx_queues[i] = NULL;
 233         }
 234         dev->data->nb_rx_queues = 0;
 235         for (i = 0; i < nb_tx; i++) {
 236                 nfb_eth_tx_queue_release(dev->data->tx_queues[i]);
 237                 dev->data->tx_queues[i] = NULL;
 238         }
 239         dev->data->nb_tx_queues = 0;
 240
 241         return 0;
 242 }
 243
 244 /**
 245  * DPDK callback to retrieve physical link information.
 246  *
 247  * @param dev
 248  *   Pointer to Ethernet device structure.
 249  * @param[out] link
 250  *   Storage for current link status.
 251  *
 252  * @return
 253  *   0 on success, a negative errno value otherwise.
 254  */
 255 static int
 256 nfb_eth_link_update(struct rte_eth_dev *dev,
 257         int wait_to_complete __rte_unused)
 258 {
 259         uint16_t i;
 260         struct nc_rxmac_status status;
 261         struct rte_eth_link link;
 262         memset(&link, 0, sizeof(link));
 263
 264         struct pmd_internals *internals = dev->data->dev_private;
 265
 266         status.speed = MAC_SPEED_UNKNOWN;
 267
 268         link.link_speed = ETH_SPEED_NUM_NONE;
 269         link.link_status = ETH_LINK_DOWN;
 270         link.link_duplex = ETH_LINK_FULL_DUPLEX;
 271         link.link_autoneg = ETH_LINK_SPEED_FIXED;
 272
 273         if (internals->rxmac[0] != NULL) {
 274                 nc_rxmac_read_status(internals->rxmac[0], &status);
 275
 276                 switch (status.speed) {
 277                 case MAC_SPEED_10G:
 278                         link.link_speed = ETH_SPEED_NUM_10G;
 279                         break;
 280                 case MAC_SPEED_40G:
 281                         link.link_speed = ETH_SPEED_NUM_40G;
 282                         break;
 283                 case MAC_SPEED_100G:
 284                         link.link_speed = ETH_SPEED_NUM_100G;
 285                         break;
 286                 default:
 287                         link.link_speed = ETH_SPEED_NUM_NONE;
 288                         break;
 289                 }
 290         }
 291
 292         for (i = 0; i < internals->max_rxmac; ++i) {
 293                 nc_rxmac_read_status(internals->rxmac[i], &status);
 294
 295                 if (status.enabled && status.link_up) {
 296                         link.link_status = ETH_LINK_UP;
 297                         break;
 298                 }
 299         }
 300
 301         rte_eth_linkstatus_set(dev, &link);
 302
 303         return 0;
 304 }
 305
 306 /**
 307  * DPDK callback to bring the link UP.
 308  *
 309  * @param dev
 310  *   Pointer to Ethernet device structure.
 311  *
 312  * @return
 313  *   0 on success, a negative errno value otherwise.
 314  */
 315 static int
 316 nfb_eth_dev_set_link_up(struct rte_eth_dev *dev)
 317 {
 318         struct pmd_internals *internals = (struct pmd_internals *)
 319                 dev->data->dev_private;
 320
 321         uint16_t i;
 322         for (i = 0; i < internals->max_rxmac; ++i)
 323                 nc_rxmac_enable(internals->rxmac[i]);
 324
 325         for (i = 0; i < internals->max_txmac; ++i)
 326                 nc_txmac_enable(internals->txmac[i]);
 327
 328         return 0;
 329 }
 330
 331 /**
 332  * DPDK callback to bring the link DOWN.
 333  *
 334  * @param dev
 335  *   Pointer to Ethernet device structure.
 336  *
 337  * @return
 338  *   0 on success, a negative errno value otherwise.
 339  */
 340 static int
 341 nfb_eth_dev_set_link_down(struct rte_eth_dev *dev)
 342 {
 343         struct pmd_internals *internals = (struct pmd_internals *)
 344                 dev->data->dev_private;
 345
 346         uint16_t i;
 347         for (i = 0; i < internals->max_rxmac; ++i)
 348                 nc_rxmac_disable(internals->rxmac[i]);
 349
 350         for (i = 0; i < internals->max_txmac; ++i)
 351                 nc_txmac_disable(internals->txmac[i]);
 352
 353         return 0;
 354 }
 355
 356 /**
 357  * DPDK callback to set primary MAC address.
 358  *
 359  * @param dev
 360  *   Pointer to Ethernet device structure.
 361  * @param mac_addr
 362  *   MAC address to register.
 363  *
 364  * @return
 365  *   0 on success, a negative errno value otherwise.
 366  */
 367 static int
 368 nfb_eth_mac_addr_set(struct rte_eth_dev *dev,
 369         struct rte_ether_addr *mac_addr)
 370 {
 371         unsigned int i;
 372         uint64_t mac = 0;
 373         struct rte_eth_dev_data *data = dev->data;
 374         struct pmd_internals *internals = (struct pmd_internals *)
 375                 data->dev_private;
 376
 377         if (!rte_is_valid_assigned_ether_addr(mac_addr))
 378                 return -EINVAL;
 379
 380         for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) {
 381                 mac <<= 8;
 382                 mac |= mac_addr->addr_bytes[i] & 0xFF;
 383         }
 384
 385         for (i = 0; i < internals->max_rxmac; ++i)
 386                 nc_rxmac_set_mac(internals->rxmac[i], 0, mac, 1);
 387
 388         rte_ether_addr_copy(mac_addr, data->mac_addrs);
 389         return 0;
 390 }
 391
 392 static const struct eth_dev_ops ops = {
 393         .dev_start = nfb_eth_dev_start,
 394         .dev_stop = nfb_eth_dev_stop,
 395         .dev_set_link_up = nfb_eth_dev_set_link_up,
 396         .dev_set_link_down = nfb_eth_dev_set_link_down,
 397         .dev_close = nfb_eth_dev_close,
 398         .dev_configure = nfb_eth_dev_configure,
 399         .dev_infos_get = nfb_eth_dev_info,
 400         .promiscuous_enable = nfb_eth_promiscuous_enable,
 401         .promiscuous_disable = nfb_eth_promiscuous_disable,
 402         .allmulticast_enable = nfb_eth_allmulticast_enable,
 403         .allmulticast_disable = nfb_eth_allmulticast_disable,
 404         .rx_queue_start = nfb_eth_rx_queue_start,
 405         .rx_queue_stop = nfb_eth_rx_queue_stop,
 406         .tx_queue_start = nfb_eth_tx_queue_start,
 407         .tx_queue_stop = nfb_eth_tx_queue_stop,
 408         .rx_queue_setup = nfb_eth_rx_queue_setup,
 409         .tx_queue_setup = nfb_eth_tx_queue_setup,
 410         .rx_queue_release = nfb_eth_rx_queue_release,
 411         .tx_queue_release = nfb_eth_tx_queue_release,
 412         .link_update = nfb_eth_link_update,
 413         .stats_get = nfb_eth_stats_get,
 414         .stats_reset = nfb_eth_stats_reset,
 415         .mac_addr_set = nfb_eth_mac_addr_set,
 416 };
 417
 418 /**
 419  * DPDK callback to initialize an ethernet device
 420  *
 421  * @param dev
 422  *   Pointer to ethernet device structure
 423  *
 424  * @return
 425  *   0 on success, a negative errno value otherwise.
 426  */
 427 static int
 428 nfb_eth_dev_init(struct rte_eth_dev *dev)
 429 {
 430         struct rte_eth_dev_data *data = dev->data;
 431         struct pmd_internals *internals = (struct pmd_internals *)
 432                 data->dev_private;
 433         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 434         struct rte_pci_addr *pci_addr = &pci_dev->addr;
 435         struct rte_ether_addr eth_addr_init;
 436         struct rte_kvargs *kvlist;
 437
 438         RTE_LOG(INFO, PMD, "Initializing NFB device (" PCI_PRI_FMT ")\n",
 439                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 440                 pci_addr->function);
 441
 442         snprintf(internals->nfb_dev, PATH_MAX,
 443                 "/dev/nfb/by-pci-slot/" PCI_PRI_FMT,
 444                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 445                 pci_addr->function);
 446
 447         /* Check validity of device args */
 448         if (dev->device->devargs != NULL &&
 449                         dev->device->devargs->args != NULL &&
 450                         strlen(dev->device->devargs->args) > 0) {
 451                 kvlist = rte_kvargs_parse(dev->device->devargs->args,
 452                                                 VALID_KEYS);
 453                 if (kvlist == NULL) {
 454                         RTE_LOG(ERR, PMD, "Failed to parse device arguments %s",
 455                                 dev->device->devargs->args);
 456                         rte_kvargs_free(kvlist);
 457                         return -EINVAL;
 458                 }
 459                 rte_kvargs_free(kvlist);
 460         }
 461
 462         /*
 463          * Get number of available DMA RX and TX queues, which is maximum
 464          * number of queues that can be created and store it in private device
 465          * data structure.
 466          */
 467         internals->nfb = nfb_open(internals->nfb_dev);
 468         if (internals->nfb == NULL) {
 469                 RTE_LOG(ERR, PMD, "nfb_open(): failed to open %s",
 470                         internals->nfb_dev);
 471                 return -EINVAL;
 472         }
 473         data->nb_rx_queues = ndp_get_rx_queue_available_count(internals->nfb);
 474         data->nb_tx_queues = ndp_get_tx_queue_available_count(internals->nfb);
 475
 476         RTE_LOG(INFO, PMD, "Available NDP queues RX: %u TX: %u\n",
 477                 data->nb_rx_queues, data->nb_tx_queues);
 478
 479         nfb_nc_rxmac_init(internals->nfb,
 480                 internals->rxmac,
 481                 &internals->max_rxmac);
 482         nfb_nc_txmac_init(internals->nfb,
 483                 internals->txmac,
 484                 &internals->max_txmac);
 485
 486         /* Set rx, tx burst functions */
 487         dev->rx_pkt_burst = nfb_eth_ndp_rx;
 488         dev->tx_pkt_burst = nfb_eth_ndp_tx;
 489
 490         /* Set function callbacks for Ethernet API */
 491         dev->dev_ops = &ops;
 492
 493         /* Get link state */
 494         nfb_eth_link_update(dev, 0);
 495
 496         /* Allocate space for one mac address */
 497         data->mac_addrs = rte_zmalloc(data->name, sizeof(struct rte_ether_addr),
 498                 RTE_CACHE_LINE_SIZE);
 499         if (data->mac_addrs == NULL) {
 500                 RTE_LOG(ERR, PMD, "Could not alloc space for MAC address!\n");
 501                 nfb_close(internals->nfb);
 502                 return -EINVAL;
 503         }
 504
 505         rte_eth_random_addr(eth_addr_init.addr_bytes);
 506         eth_addr_init.addr_bytes[0] = eth_addr.addr_bytes[0];
 507         eth_addr_init.addr_bytes[1] = eth_addr.addr_bytes[1];
 508         eth_addr_init.addr_bytes[2] = eth_addr.addr_bytes[2];
 509
 510         nfb_eth_mac_addr_set(dev, &eth_addr_init);
 511
 512         data->promiscuous = nfb_eth_promiscuous_get(dev);
 513         data->all_multicast = nfb_eth_allmulticast_get(dev);
 514         internals->rx_filter_original = data->promiscuous;
 515
 516         RTE_LOG(INFO, PMD, "NFB device ("
 517                 PCI_PRI_FMT ") successfully initialized\n",
 518                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 519                 pci_addr->function);
 520
 521         return 0;
 522 }
 523
 524 /**
 525  * DPDK callback to uninitialize an ethernet device
 526  *
 527  * @param dev
 528  *   Pointer to ethernet device structure
 529  *
 530  * @return
 531  *   0 on success, a negative errno value otherwise.
 532  */
 533 static int
 534 nfb_eth_dev_uninit(struct rte_eth_dev *dev)
 535 {
 536         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 537         struct rte_pci_addr *pci_addr = &pci_dev->addr;
 538
 539         nfb_eth_dev_close(dev);
 540
 541         RTE_LOG(INFO, PMD, "NFB device ("
 542                 PCI_PRI_FMT ") successfully uninitialized\n",
 543                 pci_addr->domain, pci_addr->bus, pci_addr->devid,
 544                 pci_addr->function);
 545
 546         return 0;
 547 }
 548
 549 static const struct rte_pci_id nfb_pci_id_table[] = {
 550         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_40G2) },
 551         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_100G2) },
 552         { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_200G2QL) },
 553         { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3) },
 554         { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3D) },
 555         { .vendor_id = 0, }
 556 };
 557
 558 /**
 559  * DPDK callback to register a PCI device.
 560  *
 561  * This function spawns Ethernet devices out of a given PCI device.
 562  *
 563  * @param[in] pci_drv
 564  *   PCI driver structure (nfb_driver).
 565  * @param[in] pci_dev
 566  *   PCI device information.
 567  *
 568  * @return
 569  *   0 on success, a negative errno value otherwise.
 570  */
 571 static int
 572 nfb_eth_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 573                 struct rte_pci_device *pci_dev)
 574 {
 575         return rte_eth_dev_pci_generic_probe(pci_dev,
 576                 sizeof(struct pmd_internals), nfb_eth_dev_init);
 577 }
 578
 579 /**
 580  * DPDK callback to remove a PCI device.
 581  *
 582  * This function removes all Ethernet devices belong to a given PCI device.
 583  *
 584  * @param[in] pci_dev
 585  *   Pointer to the PCI device.
 586  *
 587  * @return
 588  *   0 on success, the function cannot fail.
 589  */
 590 static int
 591 nfb_eth_pci_remove(struct rte_pci_device *pci_dev)
 592 {
 593         return rte_eth_dev_pci_generic_remove(pci_dev, nfb_eth_dev_uninit);
 594 }
 595
 596 static struct rte_pci_driver nfb_eth_driver = {
 597         .id_table = nfb_pci_id_table,
 598         .probe = nfb_eth_pci_probe,
 599         .remove = nfb_eth_pci_remove,
 600 };
 601
 602 RTE_PMD_REGISTER_PCI(RTE_NFB_DRIVER_NAME, nfb_eth_driver);
 603 RTE_PMD_REGISTER_PCI_TABLE(RTE_NFB_DRIVER_NAME, nfb_pci_id_table);
 604 RTE_PMD_REGISTER_KMOD_DEP(RTE_NFB_DRIVER_NAME, "* nfb");
 605 RTE_PMD_REGISTER_PARAM_STRING(RTE_NFB_DRIVER_NAME, TIMESTAMP_ARG "=<0|1>");