1/* Intel Ethernet Switch Host Interface Driver 2 * Copyright(c) 2013 - 2015 Intel Corporation. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * The full GNU General Public License is included in this distribution in 14 * the file called "COPYING". 15 * 16 * Contact Information: 17 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 18 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 19 */ 20 21#include "fm10k.h" 22#include <linux/vmalloc.h> 23#if IS_ENABLED(CONFIG_FM10K_VXLAN) 24#include <net/vxlan.h> 25#endif /* CONFIG_FM10K_VXLAN */ 26 27/** 28 * fm10k_setup_tx_resources - allocate Tx resources (Descriptors) 29 * @tx_ring: tx descriptor ring (for a specific queue) to setup 30 * 31 * Return 0 on success, negative on failure 32 **/ 33int fm10k_setup_tx_resources(struct fm10k_ring *tx_ring) 34{ 35 struct device *dev = tx_ring->dev; 36 int size; 37 38 size = sizeof(struct fm10k_tx_buffer) * tx_ring->count; 39 40 tx_ring->tx_buffer = vzalloc(size); 41 if (!tx_ring->tx_buffer) 42 goto err; 43 44 u64_stats_init(&tx_ring->syncp); 45 46 /* round up to nearest 4K */ 47 tx_ring->size = tx_ring->count * sizeof(struct fm10k_tx_desc); 48 tx_ring->size = ALIGN(tx_ring->size, 4096); 49 50 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, 51 &tx_ring->dma, GFP_KERNEL); 52 if (!tx_ring->desc) 53 goto err; 54 55 return 0; 56 57err: 58 vfree(tx_ring->tx_buffer); 59 tx_ring->tx_buffer = NULL; 60 return -ENOMEM; 61} 62 63/** 64 * fm10k_setup_all_tx_resources - allocate all queues Tx resources 65 * @interface: board private structure 66 * 67 * If this function returns with an error, then it's possible one or 68 * more of the rings is populated (while the rest are not). It is the 69 * callers duty to clean those orphaned rings. 70 * 71 * Return 0 on success, negative on failure 72 **/ 73static int fm10k_setup_all_tx_resources(struct fm10k_intfc *interface) 74{ 75 int i, err = 0; 76 77 for (i = 0; i < interface->num_tx_queues; i++) { 78 err = fm10k_setup_tx_resources(interface->tx_ring[i]); 79 if (!err) 80 continue; 81 82 netif_err(interface, probe, interface->netdev, 83 "Allocation for Tx Queue %u failed\n", i); 84 goto err_setup_tx; 85 } 86 87 return 0; 88err_setup_tx: 89 /* rewind the index freeing the rings as we go */ 90 while (i--) 91 fm10k_free_tx_resources(interface->tx_ring[i]); 92 return err; 93} 94 95/** 96 * fm10k_setup_rx_resources - allocate Rx resources (Descriptors) 97 * @rx_ring: rx descriptor ring (for a specific queue) to setup 98 * 99 * Returns 0 on success, negative on failure 100 **/ 101int fm10k_setup_rx_resources(struct fm10k_ring *rx_ring) 102{ 103 struct device *dev = rx_ring->dev; 104 int size; 105 106 size = sizeof(struct fm10k_rx_buffer) * rx_ring->count; 107 108 rx_ring->rx_buffer = vzalloc(size); 109 if (!rx_ring->rx_buffer) 110 goto err; 111 112 u64_stats_init(&rx_ring->syncp); 113 114 /* Round up to nearest 4K */ 115 rx_ring->size = rx_ring->count * sizeof(union fm10k_rx_desc); 116 rx_ring->size = ALIGN(rx_ring->size, 4096); 117 118 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, 119 &rx_ring->dma, GFP_KERNEL); 120 if (!rx_ring->desc) 121 goto err; 122 123 return 0; 124err: 125 vfree(rx_ring->rx_buffer); 126 rx_ring->rx_buffer = NULL; 127 return -ENOMEM; 128} 129 130/** 131 * fm10k_setup_all_rx_resources - allocate all queues Rx resources 132 * @interface: board private structure 133 * 134 * If this function returns with an error, then it's possible one or 135 * more of the rings is populated (while the rest are not). It is the 136 * callers duty to clean those orphaned rings. 137 * 138 * Return 0 on success, negative on failure 139 **/ 140static int fm10k_setup_all_rx_resources(struct fm10k_intfc *interface) 141{ 142 int i, err = 0; 143 144 for (i = 0; i < interface->num_rx_queues; i++) { 145 err = fm10k_setup_rx_resources(interface->rx_ring[i]); 146 if (!err) 147 continue; 148 149 netif_err(interface, probe, interface->netdev, 150 "Allocation for Rx Queue %u failed\n", i); 151 goto err_setup_rx; 152 } 153 154 return 0; 155err_setup_rx: 156 /* rewind the index freeing the rings as we go */ 157 while (i--) 158 fm10k_free_rx_resources(interface->rx_ring[i]); 159 return err; 160} 161 162void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *ring, 163 struct fm10k_tx_buffer *tx_buffer) 164{ 165 if (tx_buffer->skb) { 166 dev_kfree_skb_any(tx_buffer->skb); 167 if (dma_unmap_len(tx_buffer, len)) 168 dma_unmap_single(ring->dev, 169 dma_unmap_addr(tx_buffer, dma), 170 dma_unmap_len(tx_buffer, len), 171 DMA_TO_DEVICE); 172 } else if (dma_unmap_len(tx_buffer, len)) { 173 dma_unmap_page(ring->dev, 174 dma_unmap_addr(tx_buffer, dma), 175 dma_unmap_len(tx_buffer, len), 176 DMA_TO_DEVICE); 177 } 178 tx_buffer->next_to_watch = NULL; 179 tx_buffer->skb = NULL; 180 dma_unmap_len_set(tx_buffer, len, 0); 181 /* tx_buffer must be completely set up in the transmit path */ 182} 183 184/** 185 * fm10k_clean_tx_ring - Free Tx Buffers 186 * @tx_ring: ring to be cleaned 187 **/ 188static void fm10k_clean_tx_ring(struct fm10k_ring *tx_ring) 189{ 190 struct fm10k_tx_buffer *tx_buffer; 191 unsigned long size; 192 u16 i; 193 194 /* ring already cleared, nothing to do */ 195 if (!tx_ring->tx_buffer) 196 return; 197 198 /* Free all the Tx ring sk_buffs */ 199 for (i = 0; i < tx_ring->count; i++) { 200 tx_buffer = &tx_ring->tx_buffer[i]; 201 fm10k_unmap_and_free_tx_resource(tx_ring, tx_buffer); 202 } 203 204 /* reset BQL values */ 205 netdev_tx_reset_queue(txring_txq(tx_ring)); 206 207 size = sizeof(struct fm10k_tx_buffer) * tx_ring->count; 208 memset(tx_ring->tx_buffer, 0, size); 209 210 /* Zero out the descriptor ring */ 211 memset(tx_ring->desc, 0, tx_ring->size); 212} 213 214/** 215 * fm10k_free_tx_resources - Free Tx Resources per Queue 216 * @tx_ring: Tx descriptor ring for a specific queue 217 * 218 * Free all transmit software resources 219 **/ 220void fm10k_free_tx_resources(struct fm10k_ring *tx_ring) 221{ 222 fm10k_clean_tx_ring(tx_ring); 223 224 vfree(tx_ring->tx_buffer); 225 tx_ring->tx_buffer = NULL; 226 227 /* if not set, then don't free */ 228 if (!tx_ring->desc) 229 return; 230 231 dma_free_coherent(tx_ring->dev, tx_ring->size, 232 tx_ring->desc, tx_ring->dma); 233 tx_ring->desc = NULL; 234} 235 236/** 237 * fm10k_clean_all_tx_rings - Free Tx Buffers for all queues 238 * @interface: board private structure 239 **/ 240void fm10k_clean_all_tx_rings(struct fm10k_intfc *interface) 241{ 242 int i; 243 244 for (i = 0; i < interface->num_tx_queues; i++) 245 fm10k_clean_tx_ring(interface->tx_ring[i]); 246 247 /* remove any stale timestamp buffers and free them */ 248 skb_queue_purge(&interface->ts_tx_skb_queue); 249} 250 251/** 252 * fm10k_free_all_tx_resources - Free Tx Resources for All Queues 253 * @interface: board private structure 254 * 255 * Free all transmit software resources 256 **/ 257static void fm10k_free_all_tx_resources(struct fm10k_intfc *interface) 258{ 259 int i = interface->num_tx_queues; 260 261 while (i--) 262 fm10k_free_tx_resources(interface->tx_ring[i]); 263} 264 265/** 266 * fm10k_clean_rx_ring - Free Rx Buffers per Queue 267 * @rx_ring: ring to free buffers from 268 **/ 269static void fm10k_clean_rx_ring(struct fm10k_ring *rx_ring) 270{ 271 unsigned long size; 272 u16 i; 273 274 if (!rx_ring->rx_buffer) 275 return; 276 277 if (rx_ring->skb) 278 dev_kfree_skb(rx_ring->skb); 279 rx_ring->skb = NULL; 280 281 /* Free all the Rx ring sk_buffs */ 282 for (i = 0; i < rx_ring->count; i++) { 283 struct fm10k_rx_buffer *buffer = &rx_ring->rx_buffer[i]; 284 /* clean-up will only set page pointer to NULL */ 285 if (!buffer->page) 286 continue; 287 288 dma_unmap_page(rx_ring->dev, buffer->dma, 289 PAGE_SIZE, DMA_FROM_DEVICE); 290 __free_page(buffer->page); 291 292 buffer->page = NULL; 293 } 294 295 size = sizeof(struct fm10k_rx_buffer) * rx_ring->count; 296 memset(rx_ring->rx_buffer, 0, size); 297 298 /* Zero out the descriptor ring */ 299 memset(rx_ring->desc, 0, rx_ring->size); 300 301 rx_ring->next_to_alloc = 0; 302 rx_ring->next_to_clean = 0; 303 rx_ring->next_to_use = 0; 304} 305 306/** 307 * fm10k_free_rx_resources - Free Rx Resources 308 * @rx_ring: ring to clean the resources from 309 * 310 * Free all receive software resources 311 **/ 312void fm10k_free_rx_resources(struct fm10k_ring *rx_ring) 313{ 314 fm10k_clean_rx_ring(rx_ring); 315 316 vfree(rx_ring->rx_buffer); 317 rx_ring->rx_buffer = NULL; 318 319 /* if not set, then don't free */ 320 if (!rx_ring->desc) 321 return; 322 323 dma_free_coherent(rx_ring->dev, rx_ring->size, 324 rx_ring->desc, rx_ring->dma); 325 326 rx_ring->desc = NULL; 327} 328 329/** 330 * fm10k_clean_all_rx_rings - Free Rx Buffers for all queues 331 * @interface: board private structure 332 **/ 333void fm10k_clean_all_rx_rings(struct fm10k_intfc *interface) 334{ 335 int i; 336 337 for (i = 0; i < interface->num_rx_queues; i++) 338 fm10k_clean_rx_ring(interface->rx_ring[i]); 339} 340 341/** 342 * fm10k_free_all_rx_resources - Free Rx Resources for All Queues 343 * @interface: board private structure 344 * 345 * Free all receive software resources 346 **/ 347static void fm10k_free_all_rx_resources(struct fm10k_intfc *interface) 348{ 349 int i = interface->num_rx_queues; 350 351 while (i--) 352 fm10k_free_rx_resources(interface->rx_ring[i]); 353} 354 355/** 356 * fm10k_request_glort_range - Request GLORTs for use in configuring rules 357 * @interface: board private structure 358 * 359 * This function allocates a range of glorts for this interface to use. 360 **/ 361static void fm10k_request_glort_range(struct fm10k_intfc *interface) 362{ 363 struct fm10k_hw *hw = &interface->hw; 364 u16 mask = (~hw->mac.dglort_map) >> FM10K_DGLORTMAP_MASK_SHIFT; 365 366 /* establish GLORT base */ 367 interface->glort = hw->mac.dglort_map & FM10K_DGLORTMAP_NONE; 368 interface->glort_count = 0; 369 370 /* nothing we can do until mask is allocated */ 371 if (hw->mac.dglort_map == FM10K_DGLORTMAP_NONE) 372 return; 373 374 /* we support 3 possible GLORT configurations. 375 * 1: VFs consume all but the last 1 376 * 2: VFs and PF split glorts with possible gap between 377 * 3: VFs allocated first 64, all others belong to PF 378 */ 379 if (mask <= hw->iov.total_vfs) { 380 interface->glort_count = 1; 381 interface->glort += mask; 382 } else if (mask < 64) { 383 interface->glort_count = (mask + 1) / 2; 384 interface->glort += interface->glort_count; 385 } else { 386 interface->glort_count = mask - 63; 387 interface->glort += 64; 388 } 389} 390 391/** 392 * fm10k_del_vxlan_port_all 393 * @interface: board private structure 394 * 395 * This function frees the entire vxlan_port list 396 **/ 397static void fm10k_del_vxlan_port_all(struct fm10k_intfc *interface) 398{ 399 struct fm10k_vxlan_port *vxlan_port; 400 401 /* flush all entries from list */ 402 vxlan_port = list_first_entry_or_null(&interface->vxlan_port, 403 struct fm10k_vxlan_port, list); 404 while (vxlan_port) { 405 list_del(&vxlan_port->list); 406 kfree(vxlan_port); 407 vxlan_port = list_first_entry_or_null(&interface->vxlan_port, 408 struct fm10k_vxlan_port, 409 list); 410 } 411} 412 413/** 414 * fm10k_restore_vxlan_port 415 * @interface: board private structure 416 * 417 * This function restores the value in the tunnel_cfg register after reset 418 **/ 419static void fm10k_restore_vxlan_port(struct fm10k_intfc *interface) 420{ 421 struct fm10k_hw *hw = &interface->hw; 422 struct fm10k_vxlan_port *vxlan_port; 423 424 /* only the PF supports configuring tunnels */ 425 if (hw->mac.type != fm10k_mac_pf) 426 return; 427 428 vxlan_port = list_first_entry_or_null(&interface->vxlan_port, 429 struct fm10k_vxlan_port, list); 430 431 /* restore tunnel configuration register */ 432 fm10k_write_reg(hw, FM10K_TUNNEL_CFG, 433 (vxlan_port ? ntohs(vxlan_port->port) : 0) | 434 (ETH_P_TEB << FM10K_TUNNEL_CFG_NVGRE_SHIFT)); 435} 436 437/** 438 * fm10k_add_vxlan_port 439 * @netdev: network interface device structure 440 * @sa_family: Address family of new port 441 * @port: port number used for VXLAN 442 * 443 * This funciton is called when a new VXLAN interface has added a new port 444 * number to the range that is currently in use for VXLAN. The new port 445 * number is always added to the tail so that the port number list should 446 * match the order in which the ports were allocated. The head of the list 447 * is always used as the VXLAN port number for offloads. 448 **/ 449static void fm10k_add_vxlan_port(struct net_device *dev, 450 sa_family_t sa_family, __be16 port) { 451 struct fm10k_intfc *interface = netdev_priv(dev); 452 struct fm10k_vxlan_port *vxlan_port; 453 454 /* only the PF supports configuring tunnels */ 455 if (interface->hw.mac.type != fm10k_mac_pf) 456 return; 457 458 /* existing ports are pulled out so our new entry is always last */ 459 fm10k_vxlan_port_for_each(vxlan_port, interface) { 460 if ((vxlan_port->port == port) && 461 (vxlan_port->sa_family == sa_family)) { 462 list_del(&vxlan_port->list); 463 goto insert_tail; 464 } 465 } 466 467 /* allocate memory to track ports */ 468 vxlan_port = kmalloc(sizeof(*vxlan_port), GFP_ATOMIC); 469 if (!vxlan_port) 470 return; 471 vxlan_port->port = port; 472 vxlan_port->sa_family = sa_family; 473 474insert_tail: 475 /* add new port value to list */ 476 list_add_tail(&vxlan_port->list, &interface->vxlan_port); 477 478 fm10k_restore_vxlan_port(interface); 479} 480 481/** 482 * fm10k_del_vxlan_port 483 * @netdev: network interface device structure 484 * @sa_family: Address family of freed port 485 * @port: port number used for VXLAN 486 * 487 * This funciton is called when a new VXLAN interface has freed a port 488 * number from the range that is currently in use for VXLAN. The freed 489 * port is removed from the list and the new head is used to determine 490 * the port number for offloads. 491 **/ 492static void fm10k_del_vxlan_port(struct net_device *dev, 493 sa_family_t sa_family, __be16 port) { 494 struct fm10k_intfc *interface = netdev_priv(dev); 495 struct fm10k_vxlan_port *vxlan_port; 496 497 if (interface->hw.mac.type != fm10k_mac_pf) 498 return; 499 500 /* find the port in the list and free it */ 501 fm10k_vxlan_port_for_each(vxlan_port, interface) { 502 if ((vxlan_port->port == port) && 503 (vxlan_port->sa_family == sa_family)) { 504 list_del(&vxlan_port->list); 505 kfree(vxlan_port); 506 break; 507 } 508 } 509 510 fm10k_restore_vxlan_port(interface); 511} 512 513/** 514 * fm10k_open - Called when a network interface is made active 515 * @netdev: network interface device structure 516 * 517 * Returns 0 on success, negative value on failure 518 * 519 * The open entry point is called when a network interface is made 520 * active by the system (IFF_UP). At this point all resources needed 521 * for transmit and receive operations are allocated, the interrupt 522 * handler is registered with the OS, the watchdog timer is started, 523 * and the stack is notified that the interface is ready. 524 **/ 525int fm10k_open(struct net_device *netdev) 526{ 527 struct fm10k_intfc *interface = netdev_priv(netdev); 528 int err; 529 530 /* allocate transmit descriptors */ 531 err = fm10k_setup_all_tx_resources(interface); 532 if (err) 533 goto err_setup_tx; 534 535 /* allocate receive descriptors */ 536 err = fm10k_setup_all_rx_resources(interface); 537 if (err) 538 goto err_setup_rx; 539 540 /* allocate interrupt resources */ 541 err = fm10k_qv_request_irq(interface); 542 if (err) 543 goto err_req_irq; 544 545 /* setup GLORT assignment for this port */ 546 fm10k_request_glort_range(interface); 547 548 /* Notify the stack of the actual queue counts */ 549 err = netif_set_real_num_tx_queues(netdev, 550 interface->num_tx_queues); 551 if (err) 552 goto err_set_queues; 553 554 err = netif_set_real_num_rx_queues(netdev, 555 interface->num_rx_queues); 556 if (err) 557 goto err_set_queues; 558 559#if IS_ENABLED(CONFIG_FM10K_VXLAN) 560 /* update VXLAN port configuration */ 561 vxlan_get_rx_port(netdev); 562 563#endif 564 fm10k_up(interface); 565 566 return 0; 567 568err_set_queues: 569 fm10k_qv_free_irq(interface); 570err_req_irq: 571 fm10k_free_all_rx_resources(interface); 572err_setup_rx: 573 fm10k_free_all_tx_resources(interface); 574err_setup_tx: 575 return err; 576} 577 578/** 579 * fm10k_close - Disables a network interface 580 * @netdev: network interface device structure 581 * 582 * Returns 0, this is not allowed to fail 583 * 584 * The close entry point is called when an interface is de-activated 585 * by the OS. The hardware is still under the drivers control, but 586 * needs to be disabled. A global MAC reset is issued to stop the 587 * hardware, and all transmit and receive resources are freed. 588 **/ 589int fm10k_close(struct net_device *netdev) 590{ 591 struct fm10k_intfc *interface = netdev_priv(netdev); 592 593 fm10k_down(interface); 594 595 fm10k_qv_free_irq(interface); 596 597 fm10k_del_vxlan_port_all(interface); 598 599 fm10k_free_all_tx_resources(interface); 600 fm10k_free_all_rx_resources(interface); 601 602 return 0; 603} 604 605static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev) 606{ 607 struct fm10k_intfc *interface = netdev_priv(dev); 608 unsigned int r_idx = skb->queue_mapping; 609 int err; 610 611 if ((skb->protocol == htons(ETH_P_8021Q)) && 612 !skb_vlan_tag_present(skb)) { 613 /* FM10K only supports hardware tagging, any tags in frame 614 * are considered 2nd level or "outer" tags 615 */ 616 struct vlan_hdr *vhdr; 617 __be16 proto; 618 619 /* make sure skb is not shared */ 620 skb = skb_share_check(skb, GFP_ATOMIC); 621 if (!skb) 622 return NETDEV_TX_OK; 623 624 /* make sure there is enough room to move the ethernet header */ 625 if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN))) 626 return NETDEV_TX_OK; 627 628 /* verify the skb head is not shared */ 629 err = skb_cow_head(skb, 0); 630 if (err) 631 return NETDEV_TX_OK; 632 633 /* locate vlan header */ 634 vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN); 635 636 /* pull the 2 key pieces of data out of it */ 637 __vlan_hwaccel_put_tag(skb, 638 htons(ETH_P_8021Q), 639 ntohs(vhdr->h_vlan_TCI)); 640 proto = vhdr->h_vlan_encapsulated_proto; 641 skb->protocol = (ntohs(proto) >= 1536) ? proto : 642 htons(ETH_P_802_2); 643 644 /* squash it by moving the ethernet addresses up 4 bytes */ 645 memmove(skb->data + VLAN_HLEN, skb->data, 12); 646 __skb_pull(skb, VLAN_HLEN); 647 skb_reset_mac_header(skb); 648 } 649 650 /* The minimum packet size for a single buffer is 17B so pad the skb 651 * in order to meet this minimum size requirement. 652 */ 653 if (unlikely(skb->len < 17)) { 654 int pad_len = 17 - skb->len; 655 656 if (skb_pad(skb, pad_len)) 657 return NETDEV_TX_OK; 658 __skb_put(skb, pad_len); 659 } 660 661 /* prepare packet for hardware time stamping */ 662 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) 663 fm10k_ts_tx_enqueue(interface, skb); 664 665 if (r_idx >= interface->num_tx_queues) 666 r_idx %= interface->num_tx_queues; 667 668 err = fm10k_xmit_frame_ring(skb, interface->tx_ring[r_idx]); 669 670 return err; 671} 672 673static int fm10k_change_mtu(struct net_device *dev, int new_mtu) 674{ 675 if (new_mtu < 68 || new_mtu > FM10K_MAX_JUMBO_FRAME_SIZE) 676 return -EINVAL; 677 678 dev->mtu = new_mtu; 679 680 return 0; 681} 682 683/** 684 * fm10k_tx_timeout - Respond to a Tx Hang 685 * @netdev: network interface device structure 686 **/ 687static void fm10k_tx_timeout(struct net_device *netdev) 688{ 689 struct fm10k_intfc *interface = netdev_priv(netdev); 690 bool real_tx_hang = false; 691 int i; 692 693#define TX_TIMEO_LIMIT 16000 694 for (i = 0; i < interface->num_tx_queues; i++) { 695 struct fm10k_ring *tx_ring = interface->tx_ring[i]; 696 697 if (check_for_tx_hang(tx_ring) && fm10k_check_tx_hang(tx_ring)) 698 real_tx_hang = true; 699 } 700 701 if (real_tx_hang) { 702 fm10k_tx_timeout_reset(interface); 703 } else { 704 netif_info(interface, drv, netdev, 705 "Fake Tx hang detected with timeout of %d seconds\n", 706 netdev->watchdog_timeo/HZ); 707 708 /* fake Tx hang - increase the kernel timeout */ 709 if (netdev->watchdog_timeo < TX_TIMEO_LIMIT) 710 netdev->watchdog_timeo *= 2; 711 } 712} 713 714static int fm10k_uc_vlan_unsync(struct net_device *netdev, 715 const unsigned char *uc_addr) 716{ 717 struct fm10k_intfc *interface = netdev_priv(netdev); 718 struct fm10k_hw *hw = &interface->hw; 719 u16 glort = interface->glort; 720 u16 vid = interface->vid; 721 bool set = !!(vid / VLAN_N_VID); 722 int err; 723 724 /* drop any leading bits on the VLAN ID */ 725 vid &= VLAN_N_VID - 1; 726 727 err = hw->mac.ops.update_uc_addr(hw, glort, uc_addr, vid, set, 0); 728 if (err) 729 return err; 730 731 /* return non-zero value as we are only doing a partial sync/unsync */ 732 return 1; 733} 734 735static int fm10k_mc_vlan_unsync(struct net_device *netdev, 736 const unsigned char *mc_addr) 737{ 738 struct fm10k_intfc *interface = netdev_priv(netdev); 739 struct fm10k_hw *hw = &interface->hw; 740 u16 glort = interface->glort; 741 u16 vid = interface->vid; 742 bool set = !!(vid / VLAN_N_VID); 743 int err; 744 745 /* drop any leading bits on the VLAN ID */ 746 vid &= VLAN_N_VID - 1; 747 748 err = hw->mac.ops.update_mc_addr(hw, glort, mc_addr, vid, set); 749 if (err) 750 return err; 751 752 /* return non-zero value as we are only doing a partial sync/unsync */ 753 return 1; 754} 755 756static int fm10k_update_vid(struct net_device *netdev, u16 vid, bool set) 757{ 758 struct fm10k_intfc *interface = netdev_priv(netdev); 759 struct fm10k_hw *hw = &interface->hw; 760 s32 err; 761 762 /* updates do not apply to VLAN 0 */ 763 if (!vid) 764 return 0; 765 766 if (vid >= VLAN_N_VID) 767 return -EINVAL; 768 769 /* Verify we have permission to add VLANs */ 770 if (hw->mac.vlan_override) 771 return -EACCES; 772 773 /* update active_vlans bitmask */ 774 set_bit(vid, interface->active_vlans); 775 if (!set) 776 clear_bit(vid, interface->active_vlans); 777 778 /* if default VLAN is already present do nothing */ 779 if (vid == hw->mac.default_vid) 780 return 0; 781 782 fm10k_mbx_lock(interface); 783 784 /* only need to update the VLAN if not in promiscuous mode */ 785 if (!(netdev->flags & IFF_PROMISC)) { 786 err = hw->mac.ops.update_vlan(hw, vid, 0, set); 787 if (err) 788 goto err_out; 789 } 790 791 /* update our base MAC address */ 792 err = hw->mac.ops.update_uc_addr(hw, interface->glort, hw->mac.addr, 793 vid, set, 0); 794 if (err) 795 goto err_out; 796 797 /* set vid prior to syncing/unsyncing the VLAN */ 798 interface->vid = vid + (set ? VLAN_N_VID : 0); 799 800 /* Update the unicast and multicast address list to add/drop VLAN */ 801 __dev_uc_unsync(netdev, fm10k_uc_vlan_unsync); 802 __dev_mc_unsync(netdev, fm10k_mc_vlan_unsync); 803 804err_out: 805 fm10k_mbx_unlock(interface); 806 807 return err; 808} 809 810static int fm10k_vlan_rx_add_vid(struct net_device *netdev, 811 __always_unused __be16 proto, u16 vid) 812{ 813 /* update VLAN and address table based on changes */ 814 return fm10k_update_vid(netdev, vid, true); 815} 816 817static int fm10k_vlan_rx_kill_vid(struct net_device *netdev, 818 __always_unused __be16 proto, u16 vid) 819{ 820 /* update VLAN and address table based on changes */ 821 return fm10k_update_vid(netdev, vid, false); 822} 823 824static u16 fm10k_find_next_vlan(struct fm10k_intfc *interface, u16 vid) 825{ 826 struct fm10k_hw *hw = &interface->hw; 827 u16 default_vid = hw->mac.default_vid; 828 u16 vid_limit = vid < default_vid ? default_vid : VLAN_N_VID; 829 830 vid = find_next_bit(interface->active_vlans, vid_limit, ++vid); 831 832 return vid; 833} 834 835static void fm10k_clear_unused_vlans(struct fm10k_intfc *interface) 836{ 837 struct fm10k_hw *hw = &interface->hw; 838 u32 vid, prev_vid; 839 840 /* loop through and find any gaps in the table */ 841 for (vid = 0, prev_vid = 0; 842 prev_vid < VLAN_N_VID; 843 prev_vid = vid + 1, vid = fm10k_find_next_vlan(interface, vid)) { 844 if (prev_vid == vid) 845 continue; 846 847 /* send request to clear multiple bits at a time */ 848 prev_vid += (vid - prev_vid - 1) << FM10K_VLAN_LENGTH_SHIFT; 849 hw->mac.ops.update_vlan(hw, prev_vid, 0, false); 850 } 851} 852 853static int __fm10k_uc_sync(struct net_device *dev, 854 const unsigned char *addr, bool sync) 855{ 856 struct fm10k_intfc *interface = netdev_priv(dev); 857 struct fm10k_hw *hw = &interface->hw; 858 u16 vid, glort = interface->glort; 859 s32 err; 860 861 if (!is_valid_ether_addr(addr)) 862 return -EADDRNOTAVAIL; 863 864 /* update table with current entries */ 865 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0; 866 vid < VLAN_N_VID; 867 vid = fm10k_find_next_vlan(interface, vid)) { 868 err = hw->mac.ops.update_uc_addr(hw, glort, addr, 869 vid, sync, 0); 870 if (err) 871 return err; 872 } 873 874 return 0; 875} 876 877static int fm10k_uc_sync(struct net_device *dev, 878 const unsigned char *addr) 879{ 880 return __fm10k_uc_sync(dev, addr, true); 881} 882 883static int fm10k_uc_unsync(struct net_device *dev, 884 const unsigned char *addr) 885{ 886 return __fm10k_uc_sync(dev, addr, false); 887} 888 889static int fm10k_set_mac(struct net_device *dev, void *p) 890{ 891 struct fm10k_intfc *interface = netdev_priv(dev); 892 struct fm10k_hw *hw = &interface->hw; 893 struct sockaddr *addr = p; 894 s32 err = 0; 895 896 if (!is_valid_ether_addr(addr->sa_data)) 897 return -EADDRNOTAVAIL; 898 899 if (dev->flags & IFF_UP) { 900 /* setting MAC address requires mailbox */ 901 fm10k_mbx_lock(interface); 902 903 err = fm10k_uc_sync(dev, addr->sa_data); 904 if (!err) 905 fm10k_uc_unsync(dev, hw->mac.addr); 906 907 fm10k_mbx_unlock(interface); 908 } 909 910 if (!err) { 911 ether_addr_copy(dev->dev_addr, addr->sa_data); 912 ether_addr_copy(hw->mac.addr, addr->sa_data); 913 dev->addr_assign_type &= ~NET_ADDR_RANDOM; 914 } 915 916 /* if we had a mailbox error suggest trying again */ 917 return err ? -EAGAIN : 0; 918} 919 920static int __fm10k_mc_sync(struct net_device *dev, 921 const unsigned char *addr, bool sync) 922{ 923 struct fm10k_intfc *interface = netdev_priv(dev); 924 struct fm10k_hw *hw = &interface->hw; 925 u16 vid, glort = interface->glort; 926 s32 err; 927 928 if (!is_multicast_ether_addr(addr)) 929 return -EADDRNOTAVAIL; 930 931 /* update table with current entries */ 932 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0; 933 vid < VLAN_N_VID; 934 vid = fm10k_find_next_vlan(interface, vid)) { 935 err = hw->mac.ops.update_mc_addr(hw, glort, addr, vid, sync); 936 if (err) 937 return err; 938 } 939 940 return 0; 941} 942 943static int fm10k_mc_sync(struct net_device *dev, 944 const unsigned char *addr) 945{ 946 return __fm10k_mc_sync(dev, addr, true); 947} 948 949static int fm10k_mc_unsync(struct net_device *dev, 950 const unsigned char *addr) 951{ 952 return __fm10k_mc_sync(dev, addr, false); 953} 954 955static void fm10k_set_rx_mode(struct net_device *dev) 956{ 957 struct fm10k_intfc *interface = netdev_priv(dev); 958 struct fm10k_hw *hw = &interface->hw; 959 int xcast_mode; 960 961 /* no need to update the harwdare if we are not running */ 962 if (!(dev->flags & IFF_UP)) 963 return; 964 965 /* determine new mode based on flags */ 966 xcast_mode = (dev->flags & IFF_PROMISC) ? FM10K_XCAST_MODE_PROMISC : 967 (dev->flags & IFF_ALLMULTI) ? FM10K_XCAST_MODE_ALLMULTI : 968 (dev->flags & (IFF_BROADCAST | IFF_MULTICAST)) ? 969 FM10K_XCAST_MODE_MULTI : FM10K_XCAST_MODE_NONE; 970 971 fm10k_mbx_lock(interface); 972 973 /* update xcast mode first, but only if it changed */ 974 if (interface->xcast_mode != xcast_mode) { 975 /* update VLAN table */ 976 if (xcast_mode == FM10K_XCAST_MODE_PROMISC) 977 hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, 0, true); 978 if (interface->xcast_mode == FM10K_XCAST_MODE_PROMISC) 979 fm10k_clear_unused_vlans(interface); 980 981 /* update xcast mode */ 982 hw->mac.ops.update_xcast_mode(hw, interface->glort, xcast_mode); 983 984 /* record updated xcast mode state */ 985 interface->xcast_mode = xcast_mode; 986 } 987 988 /* synchronize all of the addresses */ 989 if (xcast_mode != FM10K_XCAST_MODE_PROMISC) { 990 __dev_uc_sync(dev, fm10k_uc_sync, fm10k_uc_unsync); 991 if (xcast_mode != FM10K_XCAST_MODE_ALLMULTI) 992 __dev_mc_sync(dev, fm10k_mc_sync, fm10k_mc_unsync); 993 } 994 995 fm10k_mbx_unlock(interface); 996} 997 998void fm10k_restore_rx_state(struct fm10k_intfc *interface) 999{ 1000 struct net_device *netdev = interface->netdev; 1001 struct fm10k_hw *hw = &interface->hw; 1002 int xcast_mode; 1003 u16 vid, glort; 1004 1005 /* restore our address if perm_addr is set */ 1006 if (hw->mac.type == fm10k_mac_vf) { 1007 if (is_valid_ether_addr(hw->mac.perm_addr)) { 1008 ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); 1009 ether_addr_copy(netdev->perm_addr, hw->mac.perm_addr); 1010 ether_addr_copy(netdev->dev_addr, hw->mac.perm_addr); 1011 netdev->addr_assign_type &= ~NET_ADDR_RANDOM; 1012 } 1013 1014 if (hw->mac.vlan_override) 1015 netdev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 1016 else 1017 netdev->features |= NETIF_F_HW_VLAN_CTAG_RX; 1018 } 1019 1020 /* record glort for this interface */ 1021 glort = interface->glort; 1022 1023 /* convert interface flags to xcast mode */ 1024 if (netdev->flags & IFF_PROMISC) 1025 xcast_mode = FM10K_XCAST_MODE_PROMISC; 1026 else if (netdev->flags & IFF_ALLMULTI) 1027 xcast_mode = FM10K_XCAST_MODE_ALLMULTI; 1028 else if (netdev->flags & (IFF_BROADCAST | IFF_MULTICAST)) 1029 xcast_mode = FM10K_XCAST_MODE_MULTI; 1030 else 1031 xcast_mode = FM10K_XCAST_MODE_NONE; 1032 1033 fm10k_mbx_lock(interface); 1034 1035 /* Enable logical port */ 1036 hw->mac.ops.update_lport_state(hw, glort, interface->glort_count, true); 1037 1038 /* update VLAN table */ 1039 hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, 0, 1040 xcast_mode == FM10K_XCAST_MODE_PROMISC); 1041 1042 /* Add filter for VLAN 0 */ 1043 hw->mac.ops.update_vlan(hw, 0, 0, true); 1044 1045 /* update table with current entries */ 1046 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0; 1047 vid < VLAN_N_VID; 1048 vid = fm10k_find_next_vlan(interface, vid)) { 1049 hw->mac.ops.update_vlan(hw, vid, 0, true); 1050 hw->mac.ops.update_uc_addr(hw, glort, hw->mac.addr, 1051 vid, true, 0); 1052 } 1053 1054 /* update xcast mode before syncronizing addresses */ 1055 hw->mac.ops.update_xcast_mode(hw, glort, xcast_mode); 1056 1057 /* synchronize all of the addresses */ 1058 if (xcast_mode != FM10K_XCAST_MODE_PROMISC) { 1059 __dev_uc_sync(netdev, fm10k_uc_sync, fm10k_uc_unsync); 1060 if (xcast_mode != FM10K_XCAST_MODE_ALLMULTI) 1061 __dev_mc_sync(netdev, fm10k_mc_sync, fm10k_mc_unsync); 1062 } 1063 1064 fm10k_mbx_unlock(interface); 1065 1066 /* record updated xcast mode state */ 1067 interface->xcast_mode = xcast_mode; 1068 1069 /* Restore tunnel configuration */ 1070 fm10k_restore_vxlan_port(interface); 1071} 1072 1073void fm10k_reset_rx_state(struct fm10k_intfc *interface) 1074{ 1075 struct net_device *netdev = interface->netdev; 1076 struct fm10k_hw *hw = &interface->hw; 1077 1078 fm10k_mbx_lock(interface); 1079 1080 /* clear the logical port state on lower device */ 1081 hw->mac.ops.update_lport_state(hw, interface->glort, 1082 interface->glort_count, false); 1083 1084 fm10k_mbx_unlock(interface); 1085 1086 /* reset flags to default state */ 1087 interface->xcast_mode = FM10K_XCAST_MODE_NONE; 1088 1089 /* clear the sync flag since the lport has been dropped */ 1090 __dev_uc_unsync(netdev, NULL); 1091 __dev_mc_unsync(netdev, NULL); 1092} 1093 1094/** 1095 * fm10k_get_stats64 - Get System Network Statistics 1096 * @netdev: network interface device structure 1097 * @stats: storage space for 64bit statistics 1098 * 1099 * Returns 64bit statistics, for use in the ndo_get_stats64 callback. This 1100 * function replaces fm10k_get_stats for kernels which support it. 1101 */ 1102static struct rtnl_link_stats64 *fm10k_get_stats64(struct net_device *netdev, 1103 struct rtnl_link_stats64 *stats) 1104{ 1105 struct fm10k_intfc *interface = netdev_priv(netdev); 1106 struct fm10k_ring *ring; 1107 unsigned int start, i; 1108 u64 bytes, packets; 1109 1110 rcu_read_lock(); 1111 1112 for (i = 0; i < interface->num_rx_queues; i++) { 1113 ring = ACCESS_ONCE(interface->rx_ring[i]); 1114 1115 if (!ring) 1116 continue; 1117 1118 do { 1119 start = u64_stats_fetch_begin_irq(&ring->syncp); 1120 packets = ring->stats.packets; 1121 bytes = ring->stats.bytes; 1122 } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); 1123 1124 stats->rx_packets += packets; 1125 stats->rx_bytes += bytes; 1126 } 1127 1128 for (i = 0; i < interface->num_tx_queues; i++) { 1129 ring = ACCESS_ONCE(interface->tx_ring[i]); 1130 1131 if (!ring) 1132 continue; 1133 1134 do { 1135 start = u64_stats_fetch_begin_irq(&ring->syncp); 1136 packets = ring->stats.packets; 1137 bytes = ring->stats.bytes; 1138 } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); 1139 1140 stats->tx_packets += packets; 1141 stats->tx_bytes += bytes; 1142 } 1143 1144 rcu_read_unlock(); 1145 1146 /* following stats updated by fm10k_service_task() */ 1147 stats->rx_missed_errors = netdev->stats.rx_missed_errors; 1148 1149 return stats; 1150} 1151 1152int fm10k_setup_tc(struct net_device *dev, u8 tc) 1153{ 1154 struct fm10k_intfc *interface = netdev_priv(dev); 1155 1156 /* Currently only the PF supports priority classes */ 1157 if (tc && (interface->hw.mac.type != fm10k_mac_pf)) 1158 return -EINVAL; 1159 1160 /* Hardware supports up to 8 traffic classes */ 1161 if (tc > 8) 1162 return -EINVAL; 1163 1164 /* Hardware has to reinitialize queues to match packet 1165 * buffer alignment. Unfortunately, the hardware is not 1166 * flexible enough to do this dynamically. 1167 */ 1168 if (netif_running(dev)) 1169 fm10k_close(dev); 1170 1171 fm10k_mbx_free_irq(interface); 1172 1173 fm10k_clear_queueing_scheme(interface); 1174 1175 /* we expect the prio_tc map to be repopulated later */ 1176 netdev_reset_tc(dev); 1177 netdev_set_num_tc(dev, tc); 1178 1179 fm10k_init_queueing_scheme(interface); 1180 1181 fm10k_mbx_request_irq(interface); 1182 1183 if (netif_running(dev)) 1184 fm10k_open(dev); 1185 1186 /* flag to indicate SWPRI has yet to be updated */ 1187 interface->flags |= FM10K_FLAG_SWPRI_CONFIG; 1188 1189 return 0; 1190} 1191 1192static int fm10k_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 1193{ 1194 switch (cmd) { 1195 case SIOCGHWTSTAMP: 1196 return fm10k_get_ts_config(netdev, ifr); 1197 case SIOCSHWTSTAMP: 1198 return fm10k_set_ts_config(netdev, ifr); 1199 default: 1200 return -EOPNOTSUPP; 1201 } 1202} 1203 1204static void fm10k_assign_l2_accel(struct fm10k_intfc *interface, 1205 struct fm10k_l2_accel *l2_accel) 1206{ 1207 struct fm10k_ring *ring; 1208 int i; 1209 1210 for (i = 0; i < interface->num_rx_queues; i++) { 1211 ring = interface->rx_ring[i]; 1212 rcu_assign_pointer(ring->l2_accel, l2_accel); 1213 } 1214 1215 interface->l2_accel = l2_accel; 1216} 1217 1218static void *fm10k_dfwd_add_station(struct net_device *dev, 1219 struct net_device *sdev) 1220{ 1221 struct fm10k_intfc *interface = netdev_priv(dev); 1222 struct fm10k_l2_accel *l2_accel = interface->l2_accel; 1223 struct fm10k_l2_accel *old_l2_accel = NULL; 1224 struct fm10k_dglort_cfg dglort = { 0 }; 1225 struct fm10k_hw *hw = &interface->hw; 1226 int size = 0, i; 1227 u16 glort; 1228 1229 /* allocate l2 accel structure if it is not available */ 1230 if (!l2_accel) { 1231 /* verify there is enough free GLORTs to support l2_accel */ 1232 if (interface->glort_count < 7) 1233 return ERR_PTR(-EBUSY); 1234 1235 size = offsetof(struct fm10k_l2_accel, macvlan[7]); 1236 l2_accel = kzalloc(size, GFP_KERNEL); 1237 if (!l2_accel) 1238 return ERR_PTR(-ENOMEM); 1239 1240 l2_accel->size = 7; 1241 l2_accel->dglort = interface->glort; 1242 1243 /* update pointers */ 1244 fm10k_assign_l2_accel(interface, l2_accel); 1245 /* do not expand if we are at our limit */ 1246 } else if ((l2_accel->count == FM10K_MAX_STATIONS) || 1247 (l2_accel->count == (interface->glort_count - 1))) { 1248 return ERR_PTR(-EBUSY); 1249 /* expand if we have hit the size limit */ 1250 } else if (l2_accel->count == l2_accel->size) { 1251 old_l2_accel = l2_accel; 1252 size = offsetof(struct fm10k_l2_accel, 1253 macvlan[(l2_accel->size * 2) + 1]); 1254 l2_accel = kzalloc(size, GFP_KERNEL); 1255 if (!l2_accel) 1256 return ERR_PTR(-ENOMEM); 1257 1258 memcpy(l2_accel, old_l2_accel, 1259 offsetof(struct fm10k_l2_accel, 1260 macvlan[old_l2_accel->size])); 1261 1262 l2_accel->size = (old_l2_accel->size * 2) + 1; 1263 1264 /* update pointers */ 1265 fm10k_assign_l2_accel(interface, l2_accel); 1266 kfree_rcu(old_l2_accel, rcu); 1267 } 1268 1269 /* add macvlan to accel table, and record GLORT for position */ 1270 for (i = 0; i < l2_accel->size; i++) { 1271 if (!l2_accel->macvlan[i]) 1272 break; 1273 } 1274 1275 /* record station */ 1276 l2_accel->macvlan[i] = sdev; 1277 l2_accel->count++; 1278 1279 /* configure default DGLORT mapping for RSS/DCB */ 1280 dglort.idx = fm10k_dglort_pf_rss; 1281 dglort.inner_rss = 1; 1282 dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask); 1283 dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask); 1284 dglort.glort = interface->glort; 1285 dglort.shared_l = fls(l2_accel->size); 1286 hw->mac.ops.configure_dglort_map(hw, &dglort); 1287 1288 /* Add rules for this specific dglort to the switch */ 1289 fm10k_mbx_lock(interface); 1290 1291 glort = l2_accel->dglort + 1 + i; 1292 hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_MULTI); 1293 hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, true, 0); 1294 1295 fm10k_mbx_unlock(interface); 1296 1297 return sdev; 1298} 1299 1300static void fm10k_dfwd_del_station(struct net_device *dev, void *priv) 1301{ 1302 struct fm10k_intfc *interface = netdev_priv(dev); 1303 struct fm10k_l2_accel *l2_accel = ACCESS_ONCE(interface->l2_accel); 1304 struct fm10k_dglort_cfg dglort = { 0 }; 1305 struct fm10k_hw *hw = &interface->hw; 1306 struct net_device *sdev = priv; 1307 int i; 1308 u16 glort; 1309 1310 if (!l2_accel) 1311 return; 1312 1313 /* search table for matching interface */ 1314 for (i = 0; i < l2_accel->size; i++) { 1315 if (l2_accel->macvlan[i] == sdev) 1316 break; 1317 } 1318 1319 /* exit if macvlan not found */ 1320 if (i == l2_accel->size) 1321 return; 1322 1323 /* Remove any rules specific to this dglort */ 1324 fm10k_mbx_lock(interface); 1325 1326 glort = l2_accel->dglort + 1 + i; 1327 hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_NONE); 1328 hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, false, 0); 1329 1330 fm10k_mbx_unlock(interface); 1331 1332 /* record removal */ 1333 l2_accel->macvlan[i] = NULL; 1334 l2_accel->count--; 1335 1336 /* configure default DGLORT mapping for RSS/DCB */ 1337 dglort.idx = fm10k_dglort_pf_rss; 1338 dglort.inner_rss = 1; 1339 dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask); 1340 dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask); 1341 dglort.glort = interface->glort; 1342 if (l2_accel) 1343 dglort.shared_l = fls(l2_accel->size); 1344 hw->mac.ops.configure_dglort_map(hw, &dglort); 1345 1346 /* If table is empty remove it */ 1347 if (l2_accel->count == 0) { 1348 fm10k_assign_l2_accel(interface, NULL); 1349 kfree_rcu(l2_accel, rcu); 1350 } 1351} 1352 1353static netdev_features_t fm10k_features_check(struct sk_buff *skb, 1354 struct net_device *dev, 1355 netdev_features_t features) 1356{ 1357 if (!skb->encapsulation || fm10k_tx_encap_offload(skb)) 1358 return features; 1359 1360 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK); 1361} 1362 1363static const struct net_device_ops fm10k_netdev_ops = { 1364 .ndo_open = fm10k_open, 1365 .ndo_stop = fm10k_close, 1366 .ndo_validate_addr = eth_validate_addr, 1367 .ndo_start_xmit = fm10k_xmit_frame, 1368 .ndo_set_mac_address = fm10k_set_mac, 1369 .ndo_change_mtu = fm10k_change_mtu, 1370 .ndo_tx_timeout = fm10k_tx_timeout, 1371 .ndo_vlan_rx_add_vid = fm10k_vlan_rx_add_vid, 1372 .ndo_vlan_rx_kill_vid = fm10k_vlan_rx_kill_vid, 1373 .ndo_set_rx_mode = fm10k_set_rx_mode, 1374 .ndo_get_stats64 = fm10k_get_stats64, 1375 .ndo_setup_tc = fm10k_setup_tc, 1376 .ndo_set_vf_mac = fm10k_ndo_set_vf_mac, 1377 .ndo_set_vf_vlan = fm10k_ndo_set_vf_vlan, 1378 .ndo_set_vf_rate = fm10k_ndo_set_vf_bw, 1379 .ndo_get_vf_config = fm10k_ndo_get_vf_config, 1380 .ndo_add_vxlan_port = fm10k_add_vxlan_port, 1381 .ndo_del_vxlan_port = fm10k_del_vxlan_port, 1382 .ndo_do_ioctl = fm10k_ioctl, 1383 .ndo_dfwd_add_station = fm10k_dfwd_add_station, 1384 .ndo_dfwd_del_station = fm10k_dfwd_del_station, 1385#ifdef CONFIG_NET_POLL_CONTROLLER 1386 .ndo_poll_controller = fm10k_netpoll, 1387#endif 1388 .ndo_features_check = fm10k_features_check, 1389}; 1390 1391#define DEFAULT_DEBUG_LEVEL_SHIFT 3 1392 1393struct net_device *fm10k_alloc_netdev(void) 1394{ 1395 struct fm10k_intfc *interface; 1396 struct net_device *dev; 1397 1398 dev = alloc_etherdev_mq(sizeof(struct fm10k_intfc), MAX_QUEUES); 1399 if (!dev) 1400 return NULL; 1401 1402 /* set net device and ethtool ops */ 1403 dev->netdev_ops = &fm10k_netdev_ops; 1404 fm10k_set_ethtool_ops(dev); 1405 1406 /* configure default debug level */ 1407 interface = netdev_priv(dev); 1408 interface->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 1409 1410 /* configure default features */ 1411 dev->features |= NETIF_F_IP_CSUM | 1412 NETIF_F_IPV6_CSUM | 1413 NETIF_F_SG | 1414 NETIF_F_TSO | 1415 NETIF_F_TSO6 | 1416 NETIF_F_TSO_ECN | 1417 NETIF_F_GSO_UDP_TUNNEL | 1418 NETIF_F_RXHASH | 1419 NETIF_F_RXCSUM; 1420 1421 /* all features defined to this point should be changeable */ 1422 dev->hw_features |= dev->features; 1423 1424 /* allow user to enable L2 forwarding acceleration */ 1425 dev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD; 1426 1427 /* configure VLAN features */ 1428 dev->vlan_features |= dev->features; 1429 1430 /* configure tunnel offloads */ 1431 dev->hw_enc_features |= NETIF_F_IP_CSUM | 1432 NETIF_F_TSO | 1433 NETIF_F_TSO6 | 1434 NETIF_F_TSO_ECN | 1435 NETIF_F_GSO_UDP_TUNNEL | 1436 NETIF_F_IPV6_CSUM; 1437 1438 /* we want to leave these both on as we cannot disable VLAN tag 1439 * insertion or stripping on the hardware since it is contained 1440 * in the FTAG and not in the frame itself. 1441 */ 1442 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 1443 NETIF_F_HW_VLAN_CTAG_RX | 1444 NETIF_F_HW_VLAN_CTAG_FILTER; 1445 1446 dev->priv_flags |= IFF_UNICAST_FLT; 1447 1448 return dev; 1449} 1450