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, ð_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>"); 605