1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) Meta Platforms, Inc. and affiliates. */ 3 4 #include <linux/etherdevice.h> 5 #include <linux/ipv6.h> 6 #include <linux/types.h> 7 #include <net/netdev_queues.h> 8 9 #include "fbnic.h" 10 #include "fbnic_netdev.h" 11 #include "fbnic_txrx.h" 12 13 int __fbnic_open(struct fbnic_net *fbn) 14 { 15 struct fbnic_dev *fbd = fbn->fbd; 16 int err; 17 18 err = fbnic_alloc_napi_vectors(fbn); 19 if (err) 20 return err; 21 22 err = fbnic_alloc_resources(fbn); 23 if (err) 24 goto free_napi_vectors; 25 26 err = netif_set_real_num_tx_queues(fbn->netdev, 27 fbn->num_tx_queues); 28 if (err) 29 goto free_resources; 30 31 err = netif_set_real_num_rx_queues(fbn->netdev, 32 fbn->num_rx_queues); 33 if (err) 34 goto free_resources; 35 36 /* Send ownership message and flush to verify FW has seen it */ 37 err = fbnic_fw_xmit_ownership_msg(fbd, true); 38 if (err) { 39 dev_warn(fbd->dev, 40 "Error %d sending host ownership message to the firmware\n", 41 err); 42 goto free_resources; 43 } 44 45 err = fbnic_time_start(fbn); 46 if (err) 47 goto release_ownership; 48 49 err = fbnic_fw_init_heartbeat(fbd, false); 50 if (err) 51 goto time_stop; 52 53 err = fbnic_pcs_irq_enable(fbd); 54 if (err) 55 goto time_stop; 56 /* Pull the BMC config and initialize the RPC */ 57 fbnic_bmc_rpc_init(fbd); 58 fbnic_rss_reinit(fbd, fbn); 59 60 return 0; 61 time_stop: 62 fbnic_time_stop(fbn); 63 release_ownership: 64 fbnic_fw_xmit_ownership_msg(fbn->fbd, false); 65 free_resources: 66 fbnic_free_resources(fbn); 67 free_napi_vectors: 68 fbnic_free_napi_vectors(fbn); 69 return err; 70 } 71 72 static int fbnic_open(struct net_device *netdev) 73 { 74 struct fbnic_net *fbn = netdev_priv(netdev); 75 int err; 76 77 err = __fbnic_open(fbn); 78 if (!err) 79 fbnic_up(fbn); 80 81 return err; 82 } 83 84 static int fbnic_stop(struct net_device *netdev) 85 { 86 struct fbnic_net *fbn = netdev_priv(netdev); 87 88 fbnic_down(fbn); 89 fbnic_pcs_irq_disable(fbn->fbd); 90 91 fbnic_time_stop(fbn); 92 fbnic_fw_xmit_ownership_msg(fbn->fbd, false); 93 94 fbnic_free_resources(fbn); 95 fbnic_free_napi_vectors(fbn); 96 97 return 0; 98 } 99 100 static int fbnic_uc_sync(struct net_device *netdev, const unsigned char *addr) 101 { 102 struct fbnic_net *fbn = netdev_priv(netdev); 103 struct fbnic_mac_addr *avail_addr; 104 105 if (WARN_ON(!is_valid_ether_addr(addr))) 106 return -EADDRNOTAVAIL; 107 108 avail_addr = __fbnic_uc_sync(fbn->fbd, addr); 109 if (!avail_addr) 110 return -ENOSPC; 111 112 /* Add type flag indicating this address is in use by the host */ 113 set_bit(FBNIC_MAC_ADDR_T_UNICAST, avail_addr->act_tcam); 114 115 return 0; 116 } 117 118 static int fbnic_uc_unsync(struct net_device *netdev, const unsigned char *addr) 119 { 120 struct fbnic_net *fbn = netdev_priv(netdev); 121 struct fbnic_dev *fbd = fbn->fbd; 122 int i, ret; 123 124 /* Scan from middle of list to bottom, filling bottom up. 125 * Skip the first entry which is reserved for dev_addr and 126 * leave the last entry to use for promiscuous filtering. 127 */ 128 for (i = fbd->mac_addr_boundary, ret = -ENOENT; 129 i < FBNIC_RPC_TCAM_MACDA_HOST_ADDR_IDX && ret; i++) { 130 struct fbnic_mac_addr *mac_addr = &fbd->mac_addr[i]; 131 132 if (!ether_addr_equal(mac_addr->value.addr8, addr)) 133 continue; 134 135 ret = __fbnic_uc_unsync(mac_addr); 136 } 137 138 return ret; 139 } 140 141 static int fbnic_mc_sync(struct net_device *netdev, const unsigned char *addr) 142 { 143 struct fbnic_net *fbn = netdev_priv(netdev); 144 struct fbnic_mac_addr *avail_addr; 145 146 if (WARN_ON(!is_multicast_ether_addr(addr))) 147 return -EADDRNOTAVAIL; 148 149 avail_addr = __fbnic_mc_sync(fbn->fbd, addr); 150 if (!avail_addr) 151 return -ENOSPC; 152 153 /* Add type flag indicating this address is in use by the host */ 154 set_bit(FBNIC_MAC_ADDR_T_MULTICAST, avail_addr->act_tcam); 155 156 return 0; 157 } 158 159 static int fbnic_mc_unsync(struct net_device *netdev, const unsigned char *addr) 160 { 161 struct fbnic_net *fbn = netdev_priv(netdev); 162 struct fbnic_dev *fbd = fbn->fbd; 163 int i, ret; 164 165 /* Scan from middle of list to top, filling top down. 166 * Skip over the address reserved for the BMC MAC and 167 * exclude index 0 as that belongs to the broadcast address 168 */ 169 for (i = fbd->mac_addr_boundary, ret = -ENOENT; 170 --i > FBNIC_RPC_TCAM_MACDA_BROADCAST_IDX && ret;) { 171 struct fbnic_mac_addr *mac_addr = &fbd->mac_addr[i]; 172 173 if (!ether_addr_equal(mac_addr->value.addr8, addr)) 174 continue; 175 176 ret = __fbnic_mc_unsync(mac_addr); 177 } 178 179 return ret; 180 } 181 182 void __fbnic_set_rx_mode(struct net_device *netdev) 183 { 184 struct fbnic_net *fbn = netdev_priv(netdev); 185 bool uc_promisc = false, mc_promisc = false; 186 struct fbnic_dev *fbd = fbn->fbd; 187 struct fbnic_mac_addr *mac_addr; 188 int err; 189 190 /* Populate host address from dev_addr */ 191 mac_addr = &fbd->mac_addr[FBNIC_RPC_TCAM_MACDA_HOST_ADDR_IDX]; 192 if (!ether_addr_equal(mac_addr->value.addr8, netdev->dev_addr) || 193 mac_addr->state != FBNIC_TCAM_S_VALID) { 194 ether_addr_copy(mac_addr->value.addr8, netdev->dev_addr); 195 mac_addr->state = FBNIC_TCAM_S_UPDATE; 196 set_bit(FBNIC_MAC_ADDR_T_UNICAST, mac_addr->act_tcam); 197 } 198 199 /* Populate broadcast address if broadcast is enabled */ 200 mac_addr = &fbd->mac_addr[FBNIC_RPC_TCAM_MACDA_BROADCAST_IDX]; 201 if (netdev->flags & IFF_BROADCAST) { 202 if (!is_broadcast_ether_addr(mac_addr->value.addr8) || 203 mac_addr->state != FBNIC_TCAM_S_VALID) { 204 eth_broadcast_addr(mac_addr->value.addr8); 205 mac_addr->state = FBNIC_TCAM_S_ADD; 206 } 207 set_bit(FBNIC_MAC_ADDR_T_BROADCAST, mac_addr->act_tcam); 208 } else if (mac_addr->state == FBNIC_TCAM_S_VALID) { 209 __fbnic_xc_unsync(mac_addr, FBNIC_MAC_ADDR_T_BROADCAST); 210 } 211 212 /* Synchronize unicast and multicast address lists */ 213 err = __dev_uc_sync(netdev, fbnic_uc_sync, fbnic_uc_unsync); 214 if (err == -ENOSPC) 215 uc_promisc = true; 216 err = __dev_mc_sync(netdev, fbnic_mc_sync, fbnic_mc_unsync); 217 if (err == -ENOSPC) 218 mc_promisc = true; 219 220 uc_promisc |= !!(netdev->flags & IFF_PROMISC); 221 mc_promisc |= !!(netdev->flags & IFF_ALLMULTI) || uc_promisc; 222 223 /* Populate last TCAM entry with promiscuous entry and 0/1 bit mask */ 224 mac_addr = &fbd->mac_addr[FBNIC_RPC_TCAM_MACDA_PROMISC_IDX]; 225 if (uc_promisc) { 226 if (!is_zero_ether_addr(mac_addr->value.addr8) || 227 mac_addr->state != FBNIC_TCAM_S_VALID) { 228 eth_zero_addr(mac_addr->value.addr8); 229 eth_broadcast_addr(mac_addr->mask.addr8); 230 clear_bit(FBNIC_MAC_ADDR_T_ALLMULTI, 231 mac_addr->act_tcam); 232 set_bit(FBNIC_MAC_ADDR_T_PROMISC, 233 mac_addr->act_tcam); 234 mac_addr->state = FBNIC_TCAM_S_ADD; 235 } 236 } else if (mc_promisc && 237 (!fbnic_bmc_present(fbd) || !fbd->fw_cap.all_multi)) { 238 /* We have to add a special handler for multicast as the 239 * BMC may have an all-multi rule already in place. As such 240 * adding a rule ourselves won't do any good so we will have 241 * to modify the rules for the ALL MULTI below if the BMC 242 * already has the rule in place. 243 */ 244 if (!is_multicast_ether_addr(mac_addr->value.addr8) || 245 mac_addr->state != FBNIC_TCAM_S_VALID) { 246 eth_zero_addr(mac_addr->value.addr8); 247 eth_broadcast_addr(mac_addr->mask.addr8); 248 mac_addr->value.addr8[0] ^= 1; 249 mac_addr->mask.addr8[0] ^= 1; 250 set_bit(FBNIC_MAC_ADDR_T_ALLMULTI, 251 mac_addr->act_tcam); 252 clear_bit(FBNIC_MAC_ADDR_T_PROMISC, 253 mac_addr->act_tcam); 254 mac_addr->state = FBNIC_TCAM_S_ADD; 255 } 256 } else if (mac_addr->state == FBNIC_TCAM_S_VALID) { 257 if (test_bit(FBNIC_MAC_ADDR_T_BMC, mac_addr->act_tcam)) { 258 clear_bit(FBNIC_MAC_ADDR_T_ALLMULTI, 259 mac_addr->act_tcam); 260 clear_bit(FBNIC_MAC_ADDR_T_PROMISC, 261 mac_addr->act_tcam); 262 } else { 263 mac_addr->state = FBNIC_TCAM_S_DELETE; 264 } 265 } 266 267 /* Add rules for BMC all multicast if it is enabled */ 268 fbnic_bmc_rpc_all_multi_config(fbd, mc_promisc); 269 270 /* Sift out any unshared BMC rules and place them in BMC only section */ 271 fbnic_sift_macda(fbd); 272 273 /* Write updates to hardware */ 274 fbnic_write_rules(fbd); 275 fbnic_write_macda(fbd); 276 fbnic_write_tce_tcam(fbd); 277 } 278 279 static void fbnic_set_rx_mode(struct net_device *netdev) 280 { 281 /* No need to update the hardware if we are not running */ 282 if (netif_running(netdev)) 283 __fbnic_set_rx_mode(netdev); 284 } 285 286 static int fbnic_set_mac(struct net_device *netdev, void *p) 287 { 288 struct sockaddr *addr = p; 289 290 if (!is_valid_ether_addr(addr->sa_data)) 291 return -EADDRNOTAVAIL; 292 293 eth_hw_addr_set(netdev, addr->sa_data); 294 295 fbnic_set_rx_mode(netdev); 296 297 return 0; 298 } 299 300 void fbnic_clear_rx_mode(struct net_device *netdev) 301 { 302 struct fbnic_net *fbn = netdev_priv(netdev); 303 struct fbnic_dev *fbd = fbn->fbd; 304 int idx; 305 306 for (idx = ARRAY_SIZE(fbd->mac_addr); idx--;) { 307 struct fbnic_mac_addr *mac_addr = &fbd->mac_addr[idx]; 308 309 if (mac_addr->state != FBNIC_TCAM_S_VALID) 310 continue; 311 312 bitmap_clear(mac_addr->act_tcam, 313 FBNIC_MAC_ADDR_T_HOST_START, 314 FBNIC_MAC_ADDR_T_HOST_LEN); 315 316 if (bitmap_empty(mac_addr->act_tcam, 317 FBNIC_RPC_TCAM_ACT_NUM_ENTRIES)) 318 mac_addr->state = FBNIC_TCAM_S_DELETE; 319 } 320 321 /* Write updates to hardware */ 322 fbnic_write_macda(fbd); 323 324 __dev_uc_unsync(netdev, NULL); 325 __dev_mc_unsync(netdev, NULL); 326 } 327 328 static int fbnic_hwtstamp_get(struct net_device *netdev, 329 struct kernel_hwtstamp_config *config) 330 { 331 struct fbnic_net *fbn = netdev_priv(netdev); 332 333 *config = fbn->hwtstamp_config; 334 335 return 0; 336 } 337 338 static int fbnic_hwtstamp_set(struct net_device *netdev, 339 struct kernel_hwtstamp_config *config, 340 struct netlink_ext_ack *extack) 341 { 342 struct fbnic_net *fbn = netdev_priv(netdev); 343 int old_rx_filter; 344 345 if (config->source != HWTSTAMP_SOURCE_NETDEV) 346 return -EOPNOTSUPP; 347 348 if (!kernel_hwtstamp_config_changed(config, &fbn->hwtstamp_config)) 349 return 0; 350 351 /* Upscale the filters */ 352 switch (config->rx_filter) { 353 case HWTSTAMP_FILTER_NONE: 354 case HWTSTAMP_FILTER_ALL: 355 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 356 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 357 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 358 case HWTSTAMP_FILTER_PTP_V2_EVENT: 359 break; 360 case HWTSTAMP_FILTER_NTP_ALL: 361 config->rx_filter = HWTSTAMP_FILTER_ALL; 362 break; 363 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 364 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 365 config->rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; 366 break; 367 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 368 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 369 config->rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; 370 break; 371 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 372 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 373 config->rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT; 374 break; 375 case HWTSTAMP_FILTER_PTP_V2_SYNC: 376 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 377 config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; 378 break; 379 default: 380 return -ERANGE; 381 } 382 383 /* Configure */ 384 old_rx_filter = fbn->hwtstamp_config.rx_filter; 385 memcpy(&fbn->hwtstamp_config, config, sizeof(*config)); 386 387 if (old_rx_filter != config->rx_filter && netif_running(fbn->netdev)) { 388 fbnic_rss_reinit(fbn->fbd, fbn); 389 fbnic_write_rules(fbn->fbd); 390 } 391 392 /* Save / report back filter configuration 393 * Note that our filter configuration is inexact. Instead of 394 * filtering for a specific UDP port or L2 Ethertype we are 395 * filtering in all UDP or all non-IP packets for timestamping. So 396 * if anything other than FILTER_ALL is requested we report 397 * FILTER_SOME indicating that we will be timestamping a few 398 * additional packets. 399 */ 400 if (config->rx_filter > HWTSTAMP_FILTER_ALL) 401 config->rx_filter = HWTSTAMP_FILTER_SOME; 402 403 return 0; 404 } 405 406 static void fbnic_get_stats64(struct net_device *dev, 407 struct rtnl_link_stats64 *stats64) 408 { 409 u64 tx_bytes, tx_packets, tx_dropped = 0; 410 u64 rx_bytes, rx_packets, rx_dropped = 0; 411 struct fbnic_net *fbn = netdev_priv(dev); 412 struct fbnic_queue_stats *stats; 413 unsigned int start, i; 414 415 stats = &fbn->tx_stats; 416 417 tx_bytes = stats->bytes; 418 tx_packets = stats->packets; 419 tx_dropped = stats->dropped; 420 421 stats64->tx_bytes = tx_bytes; 422 stats64->tx_packets = tx_packets; 423 stats64->tx_dropped = tx_dropped; 424 425 for (i = 0; i < fbn->num_tx_queues; i++) { 426 struct fbnic_ring *txr = fbn->tx[i]; 427 428 if (!txr) 429 continue; 430 431 stats = &txr->stats; 432 do { 433 start = u64_stats_fetch_begin(&stats->syncp); 434 tx_bytes = stats->bytes; 435 tx_packets = stats->packets; 436 tx_dropped = stats->dropped; 437 } while (u64_stats_fetch_retry(&stats->syncp, start)); 438 439 stats64->tx_bytes += tx_bytes; 440 stats64->tx_packets += tx_packets; 441 stats64->tx_dropped += tx_dropped; 442 } 443 444 stats = &fbn->rx_stats; 445 446 rx_bytes = stats->bytes; 447 rx_packets = stats->packets; 448 rx_dropped = stats->dropped; 449 450 stats64->rx_bytes = rx_bytes; 451 stats64->rx_packets = rx_packets; 452 stats64->rx_dropped = rx_dropped; 453 454 for (i = 0; i < fbn->num_rx_queues; i++) { 455 struct fbnic_ring *rxr = fbn->rx[i]; 456 457 if (!rxr) 458 continue; 459 460 stats = &rxr->stats; 461 do { 462 start = u64_stats_fetch_begin(&stats->syncp); 463 rx_bytes = stats->bytes; 464 rx_packets = stats->packets; 465 rx_dropped = stats->dropped; 466 } while (u64_stats_fetch_retry(&stats->syncp, start)); 467 468 stats64->rx_bytes += rx_bytes; 469 stats64->rx_packets += rx_packets; 470 stats64->rx_dropped += rx_dropped; 471 } 472 } 473 474 static const struct net_device_ops fbnic_netdev_ops = { 475 .ndo_open = fbnic_open, 476 .ndo_stop = fbnic_stop, 477 .ndo_validate_addr = eth_validate_addr, 478 .ndo_start_xmit = fbnic_xmit_frame, 479 .ndo_features_check = fbnic_features_check, 480 .ndo_set_mac_address = fbnic_set_mac, 481 .ndo_set_rx_mode = fbnic_set_rx_mode, 482 .ndo_get_stats64 = fbnic_get_stats64, 483 .ndo_hwtstamp_get = fbnic_hwtstamp_get, 484 .ndo_hwtstamp_set = fbnic_hwtstamp_set, 485 }; 486 487 static void fbnic_get_queue_stats_rx(struct net_device *dev, int idx, 488 struct netdev_queue_stats_rx *rx) 489 { 490 struct fbnic_net *fbn = netdev_priv(dev); 491 struct fbnic_ring *rxr = fbn->rx[idx]; 492 struct fbnic_queue_stats *stats; 493 unsigned int start; 494 u64 bytes, packets; 495 496 if (!rxr) 497 return; 498 499 stats = &rxr->stats; 500 do { 501 start = u64_stats_fetch_begin(&stats->syncp); 502 bytes = stats->bytes; 503 packets = stats->packets; 504 } while (u64_stats_fetch_retry(&stats->syncp, start)); 505 506 rx->bytes = bytes; 507 rx->packets = packets; 508 } 509 510 static void fbnic_get_queue_stats_tx(struct net_device *dev, int idx, 511 struct netdev_queue_stats_tx *tx) 512 { 513 struct fbnic_net *fbn = netdev_priv(dev); 514 struct fbnic_ring *txr = fbn->tx[idx]; 515 struct fbnic_queue_stats *stats; 516 unsigned int start; 517 u64 bytes, packets; 518 519 if (!txr) 520 return; 521 522 stats = &txr->stats; 523 do { 524 start = u64_stats_fetch_begin(&stats->syncp); 525 bytes = stats->bytes; 526 packets = stats->packets; 527 } while (u64_stats_fetch_retry(&stats->syncp, start)); 528 529 tx->bytes = bytes; 530 tx->packets = packets; 531 } 532 533 static void fbnic_get_base_stats(struct net_device *dev, 534 struct netdev_queue_stats_rx *rx, 535 struct netdev_queue_stats_tx *tx) 536 { 537 struct fbnic_net *fbn = netdev_priv(dev); 538 539 tx->bytes = fbn->tx_stats.bytes; 540 tx->packets = fbn->tx_stats.packets; 541 542 rx->bytes = fbn->rx_stats.bytes; 543 rx->packets = fbn->rx_stats.packets; 544 } 545 546 static const struct netdev_stat_ops fbnic_stat_ops = { 547 .get_queue_stats_rx = fbnic_get_queue_stats_rx, 548 .get_queue_stats_tx = fbnic_get_queue_stats_tx, 549 .get_base_stats = fbnic_get_base_stats, 550 }; 551 552 void fbnic_reset_queues(struct fbnic_net *fbn, 553 unsigned int tx, unsigned int rx) 554 { 555 struct fbnic_dev *fbd = fbn->fbd; 556 unsigned int max_napis; 557 558 max_napis = fbd->num_irqs - FBNIC_NON_NAPI_VECTORS; 559 560 tx = min(tx, max_napis); 561 fbn->num_tx_queues = tx; 562 563 rx = min(rx, max_napis); 564 fbn->num_rx_queues = rx; 565 566 fbn->num_napi = max(tx, rx); 567 } 568 569 /** 570 * fbnic_netdev_free - Free the netdev associate with fbnic 571 * @fbd: Driver specific structure to free netdev from 572 * 573 * Allocate and initialize the netdev and netdev private structure. Bind 574 * together the hardware, netdev, and pci data structures. 575 **/ 576 void fbnic_netdev_free(struct fbnic_dev *fbd) 577 { 578 struct fbnic_net *fbn = netdev_priv(fbd->netdev); 579 580 if (fbn->phylink) 581 phylink_destroy(fbn->phylink); 582 583 free_netdev(fbd->netdev); 584 fbd->netdev = NULL; 585 } 586 587 /** 588 * fbnic_netdev_alloc - Allocate a netdev and associate with fbnic 589 * @fbd: Driver specific structure to associate netdev with 590 * 591 * Allocate and initialize the netdev and netdev private structure. Bind 592 * together the hardware, netdev, and pci data structures. 593 * 594 * Return: 0 on success, negative on failure 595 **/ 596 struct net_device *fbnic_netdev_alloc(struct fbnic_dev *fbd) 597 { 598 struct net_device *netdev; 599 struct fbnic_net *fbn; 600 int default_queues; 601 602 netdev = alloc_etherdev_mq(sizeof(*fbn), FBNIC_MAX_RXQS); 603 if (!netdev) 604 return NULL; 605 606 SET_NETDEV_DEV(netdev, fbd->dev); 607 fbd->netdev = netdev; 608 609 netdev->netdev_ops = &fbnic_netdev_ops; 610 netdev->stat_ops = &fbnic_stat_ops; 611 612 fbnic_set_ethtool_ops(netdev); 613 614 fbn = netdev_priv(netdev); 615 616 fbn->netdev = netdev; 617 fbn->fbd = fbd; 618 INIT_LIST_HEAD(&fbn->napis); 619 620 fbn->txq_size = FBNIC_TXQ_SIZE_DEFAULT; 621 fbn->hpq_size = FBNIC_HPQ_SIZE_DEFAULT; 622 fbn->ppq_size = FBNIC_PPQ_SIZE_DEFAULT; 623 fbn->rcq_size = FBNIC_RCQ_SIZE_DEFAULT; 624 625 default_queues = netif_get_num_default_rss_queues(); 626 if (default_queues > fbd->max_num_queues) 627 default_queues = fbd->max_num_queues; 628 629 fbnic_reset_queues(fbn, default_queues, default_queues); 630 631 fbnic_reset_indir_tbl(fbn); 632 fbnic_rss_key_fill(fbn->rss_key); 633 fbnic_rss_init_en_mask(fbn); 634 635 netdev->features |= 636 NETIF_F_RXHASH | 637 NETIF_F_SG | 638 NETIF_F_HW_CSUM | 639 NETIF_F_RXCSUM; 640 641 netdev->hw_features |= netdev->features; 642 netdev->vlan_features |= netdev->features; 643 netdev->hw_enc_features |= netdev->features; 644 645 netdev->min_mtu = IPV6_MIN_MTU; 646 netdev->max_mtu = FBNIC_MAX_JUMBO_FRAME_SIZE - ETH_HLEN; 647 648 /* TBD: This is workaround for BMC as phylink doesn't have support 649 * for leavling the link enabled if a BMC is present. 650 */ 651 netdev->ethtool->wol_enabled = true; 652 653 fbn->fec = FBNIC_FEC_AUTO | FBNIC_FEC_RS; 654 fbn->link_mode = FBNIC_LINK_AUTO | FBNIC_LINK_50R2; 655 netif_carrier_off(netdev); 656 657 netif_tx_stop_all_queues(netdev); 658 659 if (fbnic_phylink_init(netdev)) { 660 fbnic_netdev_free(fbd); 661 return NULL; 662 } 663 664 return netdev; 665 } 666 667 static int fbnic_dsn_to_mac_addr(u64 dsn, char *addr) 668 { 669 addr[0] = (dsn >> 56) & 0xFF; 670 addr[1] = (dsn >> 48) & 0xFF; 671 addr[2] = (dsn >> 40) & 0xFF; 672 addr[3] = (dsn >> 16) & 0xFF; 673 addr[4] = (dsn >> 8) & 0xFF; 674 addr[5] = dsn & 0xFF; 675 676 return is_valid_ether_addr(addr) ? 0 : -EINVAL; 677 } 678 679 /** 680 * fbnic_netdev_register - Initialize general software structures 681 * @netdev: Netdev containing structure to initialize and register 682 * 683 * Initialize the MAC address for the netdev and register it. 684 * 685 * Return: 0 on success, negative on failure 686 **/ 687 int fbnic_netdev_register(struct net_device *netdev) 688 { 689 struct fbnic_net *fbn = netdev_priv(netdev); 690 struct fbnic_dev *fbd = fbn->fbd; 691 u64 dsn = fbd->dsn; 692 u8 addr[ETH_ALEN]; 693 int err; 694 695 err = fbnic_dsn_to_mac_addr(dsn, addr); 696 if (!err) { 697 ether_addr_copy(netdev->perm_addr, addr); 698 eth_hw_addr_set(netdev, addr); 699 } else { 700 /* A randomly assigned MAC address will cause provisioning 701 * issues so instead just fail to spawn the netdev and 702 * avoid any confusion. 703 */ 704 dev_err(fbd->dev, "MAC addr %pM invalid\n", addr); 705 return err; 706 } 707 708 return register_netdev(netdev); 709 } 710 711 void fbnic_netdev_unregister(struct net_device *netdev) 712 { 713 unregister_netdev(netdev); 714 } 715