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