1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2019 Cesnet 3 * Copyright(c) 2019 Netcope Technologies, a.s. <[email protected]> 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 void 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 } 201 202 /** 203 * DPDK callback to close the device. 204 * 205 * Destroy all queues and objects, free memory. 206 * 207 * @param dev 208 * Pointer to Ethernet device structure. 209 */ 210 static void 211 nfb_eth_dev_close(struct rte_eth_dev *dev) 212 { 213 uint16_t i; 214 uint16_t nb_rx = dev->data->nb_rx_queues; 215 uint16_t nb_tx = dev->data->nb_tx_queues; 216 217 nfb_eth_dev_stop(dev); 218 219 for (i = 0; i < nb_rx; i++) { 220 nfb_eth_rx_queue_release(dev->data->rx_queues[i]); 221 dev->data->rx_queues[i] = NULL; 222 } 223 dev->data->nb_rx_queues = 0; 224 for (i = 0; i < nb_tx; i++) { 225 nfb_eth_tx_queue_release(dev->data->tx_queues[i]); 226 dev->data->tx_queues[i] = NULL; 227 } 228 dev->data->nb_tx_queues = 0; 229 } 230 231 /** 232 * DPDK callback to retrieve physical link information. 233 * 234 * @param dev 235 * Pointer to Ethernet device structure. 236 * @param[out] link 237 * Storage for current link status. 238 * 239 * @return 240 * 0 on success, a negative errno value otherwise. 241 */ 242 static int 243 nfb_eth_link_update(struct rte_eth_dev *dev, 244 int wait_to_complete __rte_unused) 245 { 246 uint16_t i; 247 struct nc_rxmac_status status; 248 struct rte_eth_link link; 249 memset(&link, 0, sizeof(link)); 250 251 struct pmd_internals *internals = dev->data->dev_private; 252 253 status.speed = MAC_SPEED_UNKNOWN; 254 255 link.link_speed = ETH_SPEED_NUM_NONE; 256 link.link_status = ETH_LINK_DOWN; 257 link.link_duplex = ETH_LINK_FULL_DUPLEX; 258 link.link_autoneg = ETH_LINK_SPEED_FIXED; 259 260 if (internals->rxmac[0] != NULL) { 261 nc_rxmac_read_status(internals->rxmac[0], &status); 262 263 switch (status.speed) { 264 case MAC_SPEED_10G: 265 link.link_speed = ETH_SPEED_NUM_10G; 266 break; 267 case MAC_SPEED_40G: 268 link.link_speed = ETH_SPEED_NUM_40G; 269 break; 270 case MAC_SPEED_100G: 271 link.link_speed = ETH_SPEED_NUM_100G; 272 break; 273 default: 274 link.link_speed = ETH_SPEED_NUM_NONE; 275 break; 276 } 277 } 278 279 for (i = 0; i < internals->max_rxmac; ++i) { 280 nc_rxmac_read_status(internals->rxmac[i], &status); 281 282 if (status.enabled && status.link_up) { 283 link.link_status = ETH_LINK_UP; 284 break; 285 } 286 } 287 288 rte_eth_linkstatus_set(dev, &link); 289 290 return 0; 291 } 292 293 /** 294 * DPDK callback to bring the link UP. 295 * 296 * @param dev 297 * Pointer to Ethernet device structure. 298 * 299 * @return 300 * 0 on success, a negative errno value otherwise. 301 */ 302 static int 303 nfb_eth_dev_set_link_up(struct rte_eth_dev *dev) 304 { 305 struct pmd_internals *internals = (struct pmd_internals *) 306 dev->data->dev_private; 307 308 uint16_t i; 309 for (i = 0; i < internals->max_rxmac; ++i) 310 nc_rxmac_enable(internals->rxmac[i]); 311 312 for (i = 0; i < internals->max_txmac; ++i) 313 nc_txmac_enable(internals->txmac[i]); 314 315 return 0; 316 } 317 318 /** 319 * DPDK callback to bring the link DOWN. 320 * 321 * @param dev 322 * Pointer to Ethernet device structure. 323 * 324 * @return 325 * 0 on success, a negative errno value otherwise. 326 */ 327 static int 328 nfb_eth_dev_set_link_down(struct rte_eth_dev *dev) 329 { 330 struct pmd_internals *internals = (struct pmd_internals *) 331 dev->data->dev_private; 332 333 uint16_t i; 334 for (i = 0; i < internals->max_rxmac; ++i) 335 nc_rxmac_disable(internals->rxmac[i]); 336 337 for (i = 0; i < internals->max_txmac; ++i) 338 nc_txmac_disable(internals->txmac[i]); 339 340 return 0; 341 } 342 343 /** 344 * DPDK callback to set primary MAC address. 345 * 346 * @param dev 347 * Pointer to Ethernet device structure. 348 * @param mac_addr 349 * MAC address to register. 350 * 351 * @return 352 * 0 on success, a negative errno value otherwise. 353 */ 354 static int 355 nfb_eth_mac_addr_set(struct rte_eth_dev *dev, 356 struct rte_ether_addr *mac_addr) 357 { 358 unsigned int i; 359 uint64_t mac = 0; 360 struct rte_eth_dev_data *data = dev->data; 361 struct pmd_internals *internals = (struct pmd_internals *) 362 data->dev_private; 363 364 if (!rte_is_valid_assigned_ether_addr(mac_addr)) 365 return -EINVAL; 366 367 for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) { 368 mac <<= 8; 369 mac |= mac_addr->addr_bytes[i] & 0xFF; 370 } 371 372 for (i = 0; i < internals->max_rxmac; ++i) 373 nc_rxmac_set_mac(internals->rxmac[i], 0, mac, 1); 374 375 rte_ether_addr_copy(mac_addr, data->mac_addrs); 376 return 0; 377 } 378 379 static const struct eth_dev_ops ops = { 380 .dev_start = nfb_eth_dev_start, 381 .dev_stop = nfb_eth_dev_stop, 382 .dev_set_link_up = nfb_eth_dev_set_link_up, 383 .dev_set_link_down = nfb_eth_dev_set_link_down, 384 .dev_close = nfb_eth_dev_close, 385 .dev_configure = nfb_eth_dev_configure, 386 .dev_infos_get = nfb_eth_dev_info, 387 .promiscuous_enable = nfb_eth_promiscuous_enable, 388 .promiscuous_disable = nfb_eth_promiscuous_disable, 389 .allmulticast_enable = nfb_eth_allmulticast_enable, 390 .allmulticast_disable = nfb_eth_allmulticast_disable, 391 .rx_queue_start = nfb_eth_rx_queue_start, 392 .rx_queue_stop = nfb_eth_rx_queue_stop, 393 .tx_queue_start = nfb_eth_tx_queue_start, 394 .tx_queue_stop = nfb_eth_tx_queue_stop, 395 .rx_queue_setup = nfb_eth_rx_queue_setup, 396 .tx_queue_setup = nfb_eth_tx_queue_setup, 397 .rx_queue_release = nfb_eth_rx_queue_release, 398 .tx_queue_release = nfb_eth_tx_queue_release, 399 .link_update = nfb_eth_link_update, 400 .stats_get = nfb_eth_stats_get, 401 .stats_reset = nfb_eth_stats_reset, 402 .mac_addr_set = nfb_eth_mac_addr_set, 403 }; 404 405 /** 406 * DPDK callback to initialize an ethernet device 407 * 408 * @param dev 409 * Pointer to ethernet device structure 410 * 411 * @return 412 * 0 on success, a negative errno value otherwise. 413 */ 414 static int 415 nfb_eth_dev_init(struct rte_eth_dev *dev) 416 { 417 struct rte_eth_dev_data *data = dev->data; 418 struct pmd_internals *internals = (struct pmd_internals *) 419 data->dev_private; 420 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev); 421 struct rte_pci_addr *pci_addr = &pci_dev->addr; 422 struct rte_ether_addr eth_addr_init; 423 struct rte_kvargs *kvlist; 424 425 RTE_LOG(INFO, PMD, "Initializing NFB device (" PCI_PRI_FMT ")\n", 426 pci_addr->domain, pci_addr->bus, pci_addr->devid, 427 pci_addr->function); 428 429 snprintf(internals->nfb_dev, PATH_MAX, 430 "/dev/nfb/by-pci-slot/" PCI_PRI_FMT, 431 pci_addr->domain, pci_addr->bus, pci_addr->devid, 432 pci_addr->function); 433 434 /* Check validity of device args */ 435 if (dev->device->devargs != NULL && 436 dev->device->devargs->args != NULL && 437 strlen(dev->device->devargs->args) > 0) { 438 kvlist = rte_kvargs_parse(dev->device->devargs->args, 439 VALID_KEYS); 440 if (kvlist == NULL) { 441 RTE_LOG(ERR, PMD, "Failed to parse device arguments %s", 442 dev->device->devargs->args); 443 rte_kvargs_free(kvlist); 444 return -EINVAL; 445 } 446 rte_kvargs_free(kvlist); 447 } 448 449 /* 450 * Get number of available DMA RX and TX queues, which is maximum 451 * number of queues that can be created and store it in private device 452 * data structure. 453 */ 454 internals->nfb = nfb_open(internals->nfb_dev); 455 if (internals->nfb == NULL) { 456 RTE_LOG(ERR, PMD, "nfb_open(): failed to open %s", 457 internals->nfb_dev); 458 return -EINVAL; 459 } 460 data->nb_rx_queues = ndp_get_rx_queue_available_count(internals->nfb); 461 data->nb_tx_queues = ndp_get_tx_queue_available_count(internals->nfb); 462 463 RTE_LOG(INFO, PMD, "Available NDP queues RX: %u TX: %u\n", 464 data->nb_rx_queues, data->nb_tx_queues); 465 466 nfb_nc_rxmac_init(internals->nfb, 467 internals->rxmac, 468 &internals->max_rxmac); 469 nfb_nc_txmac_init(internals->nfb, 470 internals->txmac, 471 &internals->max_txmac); 472 473 /* Set rx, tx burst functions */ 474 dev->rx_pkt_burst = nfb_eth_ndp_rx; 475 dev->tx_pkt_burst = nfb_eth_ndp_tx; 476 477 /* Set function callbacks for Ethernet API */ 478 dev->dev_ops = &ops; 479 480 /* Get link state */ 481 nfb_eth_link_update(dev, 0); 482 483 /* Allocate space for one mac address */ 484 data->mac_addrs = rte_zmalloc(data->name, sizeof(struct rte_ether_addr), 485 RTE_CACHE_LINE_SIZE); 486 if (data->mac_addrs == NULL) { 487 RTE_LOG(ERR, PMD, "Could not alloc space for MAC address!\n"); 488 nfb_close(internals->nfb); 489 return -EINVAL; 490 } 491 492 rte_eth_random_addr(eth_addr_init.addr_bytes); 493 eth_addr_init.addr_bytes[0] = eth_addr.addr_bytes[0]; 494 eth_addr_init.addr_bytes[1] = eth_addr.addr_bytes[1]; 495 eth_addr_init.addr_bytes[2] = eth_addr.addr_bytes[2]; 496 497 nfb_eth_mac_addr_set(dev, ð_addr_init); 498 499 data->promiscuous = nfb_eth_promiscuous_get(dev); 500 data->all_multicast = nfb_eth_allmulticast_get(dev); 501 internals->rx_filter_original = data->promiscuous; 502 503 RTE_LOG(INFO, PMD, "NFB device (" 504 PCI_PRI_FMT ") successfully initialized\n", 505 pci_addr->domain, pci_addr->bus, pci_addr->devid, 506 pci_addr->function); 507 508 return 0; 509 } 510 511 /** 512 * DPDK callback to uninitialize an ethernet device 513 * 514 * @param dev 515 * Pointer to ethernet device structure 516 * 517 * @return 518 * 0 on success, a negative errno value otherwise. 519 */ 520 static int 521 nfb_eth_dev_uninit(struct rte_eth_dev *dev) 522 { 523 struct rte_eth_dev_data *data = dev->data; 524 struct pmd_internals *internals = (struct pmd_internals *) 525 data->dev_private; 526 527 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev); 528 struct rte_pci_addr *pci_addr = &pci_dev->addr; 529 530 nfb_nc_rxmac_deinit(internals->rxmac, internals->max_rxmac); 531 nfb_nc_txmac_deinit(internals->txmac, internals->max_txmac); 532 533 RTE_LOG(INFO, PMD, "NFB device (" 534 PCI_PRI_FMT ") successfully uninitialized\n", 535 pci_addr->domain, pci_addr->bus, pci_addr->devid, 536 pci_addr->function); 537 538 return 0; 539 } 540 541 static const struct rte_pci_id nfb_pci_id_table[] = { 542 { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_40G2) }, 543 { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_100G2) }, 544 { RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE, PCI_DEVICE_ID_NFB_200G2QL) }, 545 { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3) }, 546 { RTE_PCI_DEVICE(PCI_VENDOR_ID_SILICOM, PCI_DEVICE_ID_FB2CGG3D) }, 547 { .vendor_id = 0, } 548 }; 549 550 /** 551 * DPDK callback to register a PCI device. 552 * 553 * This function spawns Ethernet devices out of a given PCI device. 554 * 555 * @param[in] pci_drv 556 * PCI driver structure (nfb_driver). 557 * @param[in] pci_dev 558 * PCI device information. 559 * 560 * @return 561 * 0 on success, a negative errno value otherwise. 562 */ 563 static int 564 nfb_eth_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 565 struct rte_pci_device *pci_dev) 566 { 567 return rte_eth_dev_pci_generic_probe(pci_dev, 568 sizeof(struct pmd_internals), nfb_eth_dev_init); 569 } 570 571 /** 572 * DPDK callback to remove a PCI device. 573 * 574 * This function removes all Ethernet devices belong to a given PCI device. 575 * 576 * @param[in] pci_dev 577 * Pointer to the PCI device. 578 * 579 * @return 580 * 0 on success, the function cannot fail. 581 */ 582 static int 583 nfb_eth_pci_remove(struct rte_pci_device *pci_dev) 584 { 585 return rte_eth_dev_pci_generic_remove(pci_dev, nfb_eth_dev_uninit); 586 } 587 588 static struct rte_pci_driver nfb_eth_driver = { 589 .id_table = nfb_pci_id_table, 590 .probe = nfb_eth_pci_probe, 591 .remove = nfb_eth_pci_remove, 592 }; 593 594 RTE_PMD_REGISTER_PCI(RTE_NFB_DRIVER_NAME, nfb_eth_driver); 595 RTE_PMD_REGISTER_PCI_TABLE(RTE_NFB_DRIVER_NAME, nfb_pci_id_table); 596 RTE_PMD_REGISTER_KMOD_DEP(RTE_NFB_DRIVER_NAME, "* nfb"); 597 RTE_PMD_REGISTER_PARAM_STRING(RTE_NFB_DRIVER_NAME, TIMESTAMP_ARG "=<0|1>"); 598