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 **/ 33 int 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 57 err: 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 **/ 73 static 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; 88 err_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 **/ 101 int 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; 124 err: 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 **/ 140 static 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; 155 err_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 } 161 162 void 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 **/ 188 static 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 **/ 220 void 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 **/ 240 void 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 **/ 257 static 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 **/ 269 static 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 **/ 312 void 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 **/ 333 void 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 **/ 347 static 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 **/ 361 static 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 **/ 397 static 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 **/ 419 static 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 **/ 449 static 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; 473 474 insert_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 **/ 492 static 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 **/ 525 int 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; 567 568 err_set_queues: 569 fm10k_qv_free_irq(interface); 570 err_req_irq: 571 fm10k_free_all_rx_resources(interface); 572 err_setup_rx: 573 fm10k_free_all_tx_resources(interface); 574 err_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 **/ 589 int 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 } 604 605 static 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 dev_kfree_skb(skb); 632 return NETDEV_TX_OK; 633 } 634 635 /* locate vlan header */ 636 vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN); 637 638 /* pull the 2 key pieces of data out of it */ 639 __vlan_hwaccel_put_tag(skb, 640 htons(ETH_P_8021Q), 641 ntohs(vhdr->h_vlan_TCI)); 642 proto = vhdr->h_vlan_encapsulated_proto; 643 skb->protocol = (ntohs(proto) >= 1536) ? proto : 644 htons(ETH_P_802_2); 645 646 /* squash it by moving the ethernet addresses up 4 bytes */ 647 memmove(skb->data + VLAN_HLEN, skb->data, 12); 648 __skb_pull(skb, VLAN_HLEN); 649 skb_reset_mac_header(skb); 650 } 651 652 /* The minimum packet size for a single buffer is 17B so pad the skb 653 * in order to meet this minimum size requirement. 654 */ 655 if (unlikely(skb->len < 17)) { 656 int pad_len = 17 - skb->len; 657 658 if (skb_pad(skb, pad_len)) 659 return NETDEV_TX_OK; 660 __skb_put(skb, pad_len); 661 } 662 663 /* prepare packet for hardware time stamping */ 664 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) 665 fm10k_ts_tx_enqueue(interface, skb); 666 667 if (r_idx >= interface->num_tx_queues) 668 r_idx %= interface->num_tx_queues; 669 670 err = fm10k_xmit_frame_ring(skb, interface->tx_ring[r_idx]); 671 672 return err; 673 } 674 675 static int fm10k_change_mtu(struct net_device *dev, int new_mtu) 676 { 677 if (new_mtu < 68 || new_mtu > FM10K_MAX_JUMBO_FRAME_SIZE) 678 return -EINVAL; 679 680 dev->mtu = new_mtu; 681 682 return 0; 683 } 684 685 /** 686 * fm10k_tx_timeout - Respond to a Tx Hang 687 * @netdev: network interface device structure 688 **/ 689 static void fm10k_tx_timeout(struct net_device *netdev) 690 { 691 struct fm10k_intfc *interface = netdev_priv(netdev); 692 bool real_tx_hang = false; 693 int i; 694 695 #define TX_TIMEO_LIMIT 16000 696 for (i = 0; i < interface->num_tx_queues; i++) { 697 struct fm10k_ring *tx_ring = interface->tx_ring[i]; 698 699 if (check_for_tx_hang(tx_ring) && fm10k_check_tx_hang(tx_ring)) 700 real_tx_hang = true; 701 } 702 703 if (real_tx_hang) { 704 fm10k_tx_timeout_reset(interface); 705 } else { 706 netif_info(interface, drv, netdev, 707 "Fake Tx hang detected with timeout of %d seconds\n", 708 netdev->watchdog_timeo/HZ); 709 710 /* fake Tx hang - increase the kernel timeout */ 711 if (netdev->watchdog_timeo < TX_TIMEO_LIMIT) 712 netdev->watchdog_timeo *= 2; 713 } 714 } 715 716 static int fm10k_uc_vlan_unsync(struct net_device *netdev, 717 const unsigned char *uc_addr) 718 { 719 struct fm10k_intfc *interface = netdev_priv(netdev); 720 struct fm10k_hw *hw = &interface->hw; 721 u16 glort = interface->glort; 722 u16 vid = interface->vid; 723 bool set = !!(vid / VLAN_N_VID); 724 int err; 725 726 /* drop any leading bits on the VLAN ID */ 727 vid &= VLAN_N_VID - 1; 728 729 err = hw->mac.ops.update_uc_addr(hw, glort, uc_addr, vid, set, 0); 730 if (err) 731 return err; 732 733 /* return non-zero value as we are only doing a partial sync/unsync */ 734 return 1; 735 } 736 737 static int fm10k_mc_vlan_unsync(struct net_device *netdev, 738 const unsigned char *mc_addr) 739 { 740 struct fm10k_intfc *interface = netdev_priv(netdev); 741 struct fm10k_hw *hw = &interface->hw; 742 u16 glort = interface->glort; 743 u16 vid = interface->vid; 744 bool set = !!(vid / VLAN_N_VID); 745 int err; 746 747 /* drop any leading bits on the VLAN ID */ 748 vid &= VLAN_N_VID - 1; 749 750 err = hw->mac.ops.update_mc_addr(hw, glort, mc_addr, vid, set); 751 if (err) 752 return err; 753 754 /* return non-zero value as we are only doing a partial sync/unsync */ 755 return 1; 756 } 757 758 static int fm10k_update_vid(struct net_device *netdev, u16 vid, bool set) 759 { 760 struct fm10k_intfc *interface = netdev_priv(netdev); 761 struct fm10k_hw *hw = &interface->hw; 762 s32 err; 763 int i; 764 765 /* updates do not apply to VLAN 0 */ 766 if (!vid) 767 return 0; 768 769 if (vid >= VLAN_N_VID) 770 return -EINVAL; 771 772 /* Verify we have permission to add VLANs */ 773 if (hw->mac.vlan_override) 774 return -EACCES; 775 776 /* update active_vlans bitmask */ 777 set_bit(vid, interface->active_vlans); 778 if (!set) 779 clear_bit(vid, interface->active_vlans); 780 781 /* disable the default VID on ring if we have an active VLAN */ 782 for (i = 0; i < interface->num_rx_queues; i++) { 783 struct fm10k_ring *rx_ring = interface->rx_ring[i]; 784 u16 rx_vid = rx_ring->vid & (VLAN_N_VID - 1); 785 786 if (test_bit(rx_vid, interface->active_vlans)) 787 rx_ring->vid |= FM10K_VLAN_CLEAR; 788 else 789 rx_ring->vid &= ~FM10K_VLAN_CLEAR; 790 } 791 792 /* Do not remove default VID related entries from VLAN and MAC tables */ 793 if (!set && vid == hw->mac.default_vid) 794 return 0; 795 796 /* Do not throw an error if the interface is down. We will sync once 797 * we come up 798 */ 799 if (test_bit(__FM10K_DOWN, &interface->state)) 800 return 0; 801 802 fm10k_mbx_lock(interface); 803 804 /* only need to update the VLAN if not in promiscuous mode */ 805 if (!(netdev->flags & IFF_PROMISC)) { 806 err = hw->mac.ops.update_vlan(hw, vid, 0, set); 807 if (err) 808 goto err_out; 809 } 810 811 /* update our base MAC address */ 812 err = hw->mac.ops.update_uc_addr(hw, interface->glort, hw->mac.addr, 813 vid, set, 0); 814 if (err) 815 goto err_out; 816 817 /* set vid prior to syncing/unsyncing the VLAN */ 818 interface->vid = vid + (set ? VLAN_N_VID : 0); 819 820 /* Update the unicast and multicast address list to add/drop VLAN */ 821 __dev_uc_unsync(netdev, fm10k_uc_vlan_unsync); 822 __dev_mc_unsync(netdev, fm10k_mc_vlan_unsync); 823 824 err_out: 825 fm10k_mbx_unlock(interface); 826 827 return err; 828 } 829 830 static int fm10k_vlan_rx_add_vid(struct net_device *netdev, 831 __always_unused __be16 proto, u16 vid) 832 { 833 /* update VLAN and address table based on changes */ 834 return fm10k_update_vid(netdev, vid, true); 835 } 836 837 static int fm10k_vlan_rx_kill_vid(struct net_device *netdev, 838 __always_unused __be16 proto, u16 vid) 839 { 840 /* update VLAN and address table based on changes */ 841 return fm10k_update_vid(netdev, vid, false); 842 } 843 844 static u16 fm10k_find_next_vlan(struct fm10k_intfc *interface, u16 vid) 845 { 846 struct fm10k_hw *hw = &interface->hw; 847 u16 default_vid = hw->mac.default_vid; 848 u16 vid_limit = vid < default_vid ? default_vid : VLAN_N_VID; 849 850 vid = find_next_bit(interface->active_vlans, vid_limit, ++vid); 851 852 return vid; 853 } 854 855 static void fm10k_clear_unused_vlans(struct fm10k_intfc *interface) 856 { 857 struct fm10k_hw *hw = &interface->hw; 858 u32 vid, prev_vid; 859 860 /* loop through and find any gaps in the table */ 861 for (vid = 0, prev_vid = 0; 862 prev_vid < VLAN_N_VID; 863 prev_vid = vid + 1, vid = fm10k_find_next_vlan(interface, vid)) { 864 if (prev_vid == vid) 865 continue; 866 867 /* send request to clear multiple bits at a time */ 868 prev_vid += (vid - prev_vid - 1) << FM10K_VLAN_LENGTH_SHIFT; 869 hw->mac.ops.update_vlan(hw, prev_vid, 0, false); 870 } 871 } 872 873 static int __fm10k_uc_sync(struct net_device *dev, 874 const unsigned char *addr, bool sync) 875 { 876 struct fm10k_intfc *interface = netdev_priv(dev); 877 struct fm10k_hw *hw = &interface->hw; 878 u16 vid, glort = interface->glort; 879 s32 err; 880 881 if (!is_valid_ether_addr(addr)) 882 return -EADDRNOTAVAIL; 883 884 /* update table with current entries */ 885 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0; 886 vid < VLAN_N_VID; 887 vid = fm10k_find_next_vlan(interface, vid)) { 888 err = hw->mac.ops.update_uc_addr(hw, glort, addr, 889 vid, sync, 0); 890 if (err) 891 return err; 892 } 893 894 return 0; 895 } 896 897 static int fm10k_uc_sync(struct net_device *dev, 898 const unsigned char *addr) 899 { 900 return __fm10k_uc_sync(dev, addr, true); 901 } 902 903 static int fm10k_uc_unsync(struct net_device *dev, 904 const unsigned char *addr) 905 { 906 return __fm10k_uc_sync(dev, addr, false); 907 } 908 909 static int fm10k_set_mac(struct net_device *dev, void *p) 910 { 911 struct fm10k_intfc *interface = netdev_priv(dev); 912 struct fm10k_hw *hw = &interface->hw; 913 struct sockaddr *addr = p; 914 s32 err = 0; 915 916 if (!is_valid_ether_addr(addr->sa_data)) 917 return -EADDRNOTAVAIL; 918 919 if (dev->flags & IFF_UP) { 920 /* setting MAC address requires mailbox */ 921 fm10k_mbx_lock(interface); 922 923 err = fm10k_uc_sync(dev, addr->sa_data); 924 if (!err) 925 fm10k_uc_unsync(dev, hw->mac.addr); 926 927 fm10k_mbx_unlock(interface); 928 } 929 930 if (!err) { 931 ether_addr_copy(dev->dev_addr, addr->sa_data); 932 ether_addr_copy(hw->mac.addr, addr->sa_data); 933 dev->addr_assign_type &= ~NET_ADDR_RANDOM; 934 } 935 936 /* if we had a mailbox error suggest trying again */ 937 return err ? -EAGAIN : 0; 938 } 939 940 static int __fm10k_mc_sync(struct net_device *dev, 941 const unsigned char *addr, bool sync) 942 { 943 struct fm10k_intfc *interface = netdev_priv(dev); 944 struct fm10k_hw *hw = &interface->hw; 945 u16 vid, glort = interface->glort; 946 947 /* update table with current entries */ 948 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0; 949 vid < VLAN_N_VID; 950 vid = fm10k_find_next_vlan(interface, vid)) { 951 hw->mac.ops.update_mc_addr(hw, glort, addr, vid, sync); 952 } 953 954 return 0; 955 } 956 957 static int fm10k_mc_sync(struct net_device *dev, 958 const unsigned char *addr) 959 { 960 return __fm10k_mc_sync(dev, addr, true); 961 } 962 963 static int fm10k_mc_unsync(struct net_device *dev, 964 const unsigned char *addr) 965 { 966 return __fm10k_mc_sync(dev, addr, false); 967 } 968 969 static void fm10k_set_rx_mode(struct net_device *dev) 970 { 971 struct fm10k_intfc *interface = netdev_priv(dev); 972 struct fm10k_hw *hw = &interface->hw; 973 int xcast_mode; 974 975 /* no need to update the harwdare if we are not running */ 976 if (!(dev->flags & IFF_UP)) 977 return; 978 979 /* determine new mode based on flags */ 980 xcast_mode = (dev->flags & IFF_PROMISC) ? FM10K_XCAST_MODE_PROMISC : 981 (dev->flags & IFF_ALLMULTI) ? FM10K_XCAST_MODE_ALLMULTI : 982 (dev->flags & (IFF_BROADCAST | IFF_MULTICAST)) ? 983 FM10K_XCAST_MODE_MULTI : FM10K_XCAST_MODE_NONE; 984 985 fm10k_mbx_lock(interface); 986 987 /* update xcast mode first, but only if it changed */ 988 if (interface->xcast_mode != xcast_mode) { 989 /* update VLAN table */ 990 if (xcast_mode == FM10K_XCAST_MODE_PROMISC) 991 hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, 0, true); 992 if (interface->xcast_mode == FM10K_XCAST_MODE_PROMISC) 993 fm10k_clear_unused_vlans(interface); 994 995 /* update xcast mode */ 996 hw->mac.ops.update_xcast_mode(hw, interface->glort, xcast_mode); 997 998 /* record updated xcast mode state */ 999 interface->xcast_mode = xcast_mode; 1000 } 1001 1002 /* synchronize all of the addresses */ 1003 if (xcast_mode != FM10K_XCAST_MODE_PROMISC) { 1004 __dev_uc_sync(dev, fm10k_uc_sync, fm10k_uc_unsync); 1005 if (xcast_mode != FM10K_XCAST_MODE_ALLMULTI) 1006 __dev_mc_sync(dev, fm10k_mc_sync, fm10k_mc_unsync); 1007 } 1008 1009 fm10k_mbx_unlock(interface); 1010 } 1011 1012 void fm10k_restore_rx_state(struct fm10k_intfc *interface) 1013 { 1014 struct net_device *netdev = interface->netdev; 1015 struct fm10k_hw *hw = &interface->hw; 1016 int xcast_mode; 1017 u16 vid, glort; 1018 1019 /* record glort for this interface */ 1020 glort = interface->glort; 1021 1022 /* convert interface flags to xcast mode */ 1023 if (netdev->flags & IFF_PROMISC) 1024 xcast_mode = FM10K_XCAST_MODE_PROMISC; 1025 else if (netdev->flags & IFF_ALLMULTI) 1026 xcast_mode = FM10K_XCAST_MODE_ALLMULTI; 1027 else if (netdev->flags & (IFF_BROADCAST | IFF_MULTICAST)) 1028 xcast_mode = FM10K_XCAST_MODE_MULTI; 1029 else 1030 xcast_mode = FM10K_XCAST_MODE_NONE; 1031 1032 fm10k_mbx_lock(interface); 1033 1034 /* Enable logical port */ 1035 hw->mac.ops.update_lport_state(hw, glort, interface->glort_count, true); 1036 1037 /* update VLAN table */ 1038 hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, 0, 1039 xcast_mode == FM10K_XCAST_MODE_PROMISC); 1040 1041 /* Add filter for VLAN 0 */ 1042 hw->mac.ops.update_vlan(hw, 0, 0, true); 1043 1044 /* update table with current entries */ 1045 for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0; 1046 vid < VLAN_N_VID; 1047 vid = fm10k_find_next_vlan(interface, vid)) { 1048 hw->mac.ops.update_vlan(hw, vid, 0, true); 1049 hw->mac.ops.update_uc_addr(hw, glort, hw->mac.addr, 1050 vid, true, 0); 1051 } 1052 1053 /* update xcast mode before synchronizing addresses */ 1054 hw->mac.ops.update_xcast_mode(hw, glort, xcast_mode); 1055 1056 /* synchronize all of the addresses */ 1057 if (xcast_mode != FM10K_XCAST_MODE_PROMISC) { 1058 __dev_uc_sync(netdev, fm10k_uc_sync, fm10k_uc_unsync); 1059 if (xcast_mode != FM10K_XCAST_MODE_ALLMULTI) 1060 __dev_mc_sync(netdev, fm10k_mc_sync, fm10k_mc_unsync); 1061 } 1062 1063 fm10k_mbx_unlock(interface); 1064 1065 /* record updated xcast mode state */ 1066 interface->xcast_mode = xcast_mode; 1067 1068 /* Restore tunnel configuration */ 1069 fm10k_restore_vxlan_port(interface); 1070 } 1071 1072 void fm10k_reset_rx_state(struct fm10k_intfc *interface) 1073 { 1074 struct net_device *netdev = interface->netdev; 1075 struct fm10k_hw *hw = &interface->hw; 1076 1077 fm10k_mbx_lock(interface); 1078 1079 /* clear the logical port state on lower device */ 1080 hw->mac.ops.update_lport_state(hw, interface->glort, 1081 interface->glort_count, false); 1082 1083 fm10k_mbx_unlock(interface); 1084 1085 /* reset flags to default state */ 1086 interface->xcast_mode = FM10K_XCAST_MODE_NONE; 1087 1088 /* clear the sync flag since the lport has been dropped */ 1089 __dev_uc_unsync(netdev, NULL); 1090 __dev_mc_unsync(netdev, NULL); 1091 } 1092 1093 /** 1094 * fm10k_get_stats64 - Get System Network Statistics 1095 * @netdev: network interface device structure 1096 * @stats: storage space for 64bit statistics 1097 * 1098 * Returns 64bit statistics, for use in the ndo_get_stats64 callback. This 1099 * function replaces fm10k_get_stats for kernels which support it. 1100 */ 1101 static struct rtnl_link_stats64 *fm10k_get_stats64(struct net_device *netdev, 1102 struct rtnl_link_stats64 *stats) 1103 { 1104 struct fm10k_intfc *interface = netdev_priv(netdev); 1105 struct fm10k_ring *ring; 1106 unsigned int start, i; 1107 u64 bytes, packets; 1108 1109 rcu_read_lock(); 1110 1111 for (i = 0; i < interface->num_rx_queues; i++) { 1112 ring = ACCESS_ONCE(interface->rx_ring[i]); 1113 1114 if (!ring) 1115 continue; 1116 1117 do { 1118 start = u64_stats_fetch_begin_irq(&ring->syncp); 1119 packets = ring->stats.packets; 1120 bytes = ring->stats.bytes; 1121 } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); 1122 1123 stats->rx_packets += packets; 1124 stats->rx_bytes += bytes; 1125 } 1126 1127 for (i = 0; i < interface->num_tx_queues; i++) { 1128 ring = ACCESS_ONCE(interface->tx_ring[i]); 1129 1130 if (!ring) 1131 continue; 1132 1133 do { 1134 start = u64_stats_fetch_begin_irq(&ring->syncp); 1135 packets = ring->stats.packets; 1136 bytes = ring->stats.bytes; 1137 } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); 1138 1139 stats->tx_packets += packets; 1140 stats->tx_bytes += bytes; 1141 } 1142 1143 rcu_read_unlock(); 1144 1145 /* following stats updated by fm10k_service_task() */ 1146 stats->rx_missed_errors = netdev->stats.rx_missed_errors; 1147 1148 return stats; 1149 } 1150 1151 int fm10k_setup_tc(struct net_device *dev, u8 tc) 1152 { 1153 struct fm10k_intfc *interface = netdev_priv(dev); 1154 1155 /* Currently only the PF supports priority classes */ 1156 if (tc && (interface->hw.mac.type != fm10k_mac_pf)) 1157 return -EINVAL; 1158 1159 /* Hardware supports up to 8 traffic classes */ 1160 if (tc > 8) 1161 return -EINVAL; 1162 1163 /* Hardware has to reinitialize queues to match packet 1164 * buffer alignment. Unfortunately, the hardware is not 1165 * flexible enough to do this dynamically. 1166 */ 1167 if (netif_running(dev)) 1168 fm10k_close(dev); 1169 1170 fm10k_mbx_free_irq(interface); 1171 1172 fm10k_clear_queueing_scheme(interface); 1173 1174 /* we expect the prio_tc map to be repopulated later */ 1175 netdev_reset_tc(dev); 1176 netdev_set_num_tc(dev, tc); 1177 1178 fm10k_init_queueing_scheme(interface); 1179 1180 fm10k_mbx_request_irq(interface); 1181 1182 if (netif_running(dev)) 1183 fm10k_open(dev); 1184 1185 /* flag to indicate SWPRI has yet to be updated */ 1186 interface->flags |= FM10K_FLAG_SWPRI_CONFIG; 1187 1188 return 0; 1189 } 1190 1191 static int fm10k_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 1192 { 1193 switch (cmd) { 1194 case SIOCGHWTSTAMP: 1195 return fm10k_get_ts_config(netdev, ifr); 1196 case SIOCSHWTSTAMP: 1197 return fm10k_set_ts_config(netdev, ifr); 1198 default: 1199 return -EOPNOTSUPP; 1200 } 1201 } 1202 1203 static void fm10k_assign_l2_accel(struct fm10k_intfc *interface, 1204 struct fm10k_l2_accel *l2_accel) 1205 { 1206 struct fm10k_ring *ring; 1207 int i; 1208 1209 for (i = 0; i < interface->num_rx_queues; i++) { 1210 ring = interface->rx_ring[i]; 1211 rcu_assign_pointer(ring->l2_accel, l2_accel); 1212 } 1213 1214 interface->l2_accel = l2_accel; 1215 } 1216 1217 static void *fm10k_dfwd_add_station(struct net_device *dev, 1218 struct net_device *sdev) 1219 { 1220 struct fm10k_intfc *interface = netdev_priv(dev); 1221 struct fm10k_l2_accel *l2_accel = interface->l2_accel; 1222 struct fm10k_l2_accel *old_l2_accel = NULL; 1223 struct fm10k_dglort_cfg dglort = { 0 }; 1224 struct fm10k_hw *hw = &interface->hw; 1225 int size = 0, i; 1226 u16 glort; 1227 1228 /* allocate l2 accel structure if it is not available */ 1229 if (!l2_accel) { 1230 /* verify there is enough free GLORTs to support l2_accel */ 1231 if (interface->glort_count < 7) 1232 return ERR_PTR(-EBUSY); 1233 1234 size = offsetof(struct fm10k_l2_accel, macvlan[7]); 1235 l2_accel = kzalloc(size, GFP_KERNEL); 1236 if (!l2_accel) 1237 return ERR_PTR(-ENOMEM); 1238 1239 l2_accel->size = 7; 1240 l2_accel->dglort = interface->glort; 1241 1242 /* update pointers */ 1243 fm10k_assign_l2_accel(interface, l2_accel); 1244 /* do not expand if we are at our limit */ 1245 } else if ((l2_accel->count == FM10K_MAX_STATIONS) || 1246 (l2_accel->count == (interface->glort_count - 1))) { 1247 return ERR_PTR(-EBUSY); 1248 /* expand if we have hit the size limit */ 1249 } else if (l2_accel->count == l2_accel->size) { 1250 old_l2_accel = l2_accel; 1251 size = offsetof(struct fm10k_l2_accel, 1252 macvlan[(l2_accel->size * 2) + 1]); 1253 l2_accel = kzalloc(size, GFP_KERNEL); 1254 if (!l2_accel) 1255 return ERR_PTR(-ENOMEM); 1256 1257 memcpy(l2_accel, old_l2_accel, 1258 offsetof(struct fm10k_l2_accel, 1259 macvlan[old_l2_accel->size])); 1260 1261 l2_accel->size = (old_l2_accel->size * 2) + 1; 1262 1263 /* update pointers */ 1264 fm10k_assign_l2_accel(interface, l2_accel); 1265 kfree_rcu(old_l2_accel, rcu); 1266 } 1267 1268 /* add macvlan to accel table, and record GLORT for position */ 1269 for (i = 0; i < l2_accel->size; i++) { 1270 if (!l2_accel->macvlan[i]) 1271 break; 1272 } 1273 1274 /* record station */ 1275 l2_accel->macvlan[i] = sdev; 1276 l2_accel->count++; 1277 1278 /* configure default DGLORT mapping for RSS/DCB */ 1279 dglort.idx = fm10k_dglort_pf_rss; 1280 dglort.inner_rss = 1; 1281 dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask); 1282 dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask); 1283 dglort.glort = interface->glort; 1284 dglort.shared_l = fls(l2_accel->size); 1285 hw->mac.ops.configure_dglort_map(hw, &dglort); 1286 1287 /* Add rules for this specific dglort to the switch */ 1288 fm10k_mbx_lock(interface); 1289 1290 glort = l2_accel->dglort + 1 + i; 1291 hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_MULTI); 1292 hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, true, 0); 1293 1294 fm10k_mbx_unlock(interface); 1295 1296 return sdev; 1297 } 1298 1299 static void fm10k_dfwd_del_station(struct net_device *dev, void *priv) 1300 { 1301 struct fm10k_intfc *interface = netdev_priv(dev); 1302 struct fm10k_l2_accel *l2_accel = ACCESS_ONCE(interface->l2_accel); 1303 struct fm10k_dglort_cfg dglort = { 0 }; 1304 struct fm10k_hw *hw = &interface->hw; 1305 struct net_device *sdev = priv; 1306 int i; 1307 u16 glort; 1308 1309 if (!l2_accel) 1310 return; 1311 1312 /* search table for matching interface */ 1313 for (i = 0; i < l2_accel->size; i++) { 1314 if (l2_accel->macvlan[i] == sdev) 1315 break; 1316 } 1317 1318 /* exit if macvlan not found */ 1319 if (i == l2_accel->size) 1320 return; 1321 1322 /* Remove any rules specific to this dglort */ 1323 fm10k_mbx_lock(interface); 1324 1325 glort = l2_accel->dglort + 1 + i; 1326 hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_NONE); 1327 hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, false, 0); 1328 1329 fm10k_mbx_unlock(interface); 1330 1331 /* record removal */ 1332 l2_accel->macvlan[i] = NULL; 1333 l2_accel->count--; 1334 1335 /* configure default DGLORT mapping for RSS/DCB */ 1336 dglort.idx = fm10k_dglort_pf_rss; 1337 dglort.inner_rss = 1; 1338 dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask); 1339 dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask); 1340 dglort.glort = interface->glort; 1341 dglort.shared_l = fls(l2_accel->size); 1342 hw->mac.ops.configure_dglort_map(hw, &dglort); 1343 1344 /* If table is empty remove it */ 1345 if (l2_accel->count == 0) { 1346 fm10k_assign_l2_accel(interface, NULL); 1347 kfree_rcu(l2_accel, rcu); 1348 } 1349 } 1350 1351 static netdev_features_t fm10k_features_check(struct sk_buff *skb, 1352 struct net_device *dev, 1353 netdev_features_t features) 1354 { 1355 if (!skb->encapsulation || fm10k_tx_encap_offload(skb)) 1356 return features; 1357 1358 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK); 1359 } 1360 1361 static const struct net_device_ops fm10k_netdev_ops = { 1362 .ndo_open = fm10k_open, 1363 .ndo_stop = fm10k_close, 1364 .ndo_validate_addr = eth_validate_addr, 1365 .ndo_start_xmit = fm10k_xmit_frame, 1366 .ndo_set_mac_address = fm10k_set_mac, 1367 .ndo_change_mtu = fm10k_change_mtu, 1368 .ndo_tx_timeout = fm10k_tx_timeout, 1369 .ndo_vlan_rx_add_vid = fm10k_vlan_rx_add_vid, 1370 .ndo_vlan_rx_kill_vid = fm10k_vlan_rx_kill_vid, 1371 .ndo_set_rx_mode = fm10k_set_rx_mode, 1372 .ndo_get_stats64 = fm10k_get_stats64, 1373 .ndo_setup_tc = fm10k_setup_tc, 1374 .ndo_set_vf_mac = fm10k_ndo_set_vf_mac, 1375 .ndo_set_vf_vlan = fm10k_ndo_set_vf_vlan, 1376 .ndo_set_vf_rate = fm10k_ndo_set_vf_bw, 1377 .ndo_get_vf_config = fm10k_ndo_get_vf_config, 1378 .ndo_add_vxlan_port = fm10k_add_vxlan_port, 1379 .ndo_del_vxlan_port = fm10k_del_vxlan_port, 1380 .ndo_do_ioctl = fm10k_ioctl, 1381 .ndo_dfwd_add_station = fm10k_dfwd_add_station, 1382 .ndo_dfwd_del_station = fm10k_dfwd_del_station, 1383 #ifdef CONFIG_NET_POLL_CONTROLLER 1384 .ndo_poll_controller = fm10k_netpoll, 1385 #endif 1386 .ndo_features_check = fm10k_features_check, 1387 }; 1388 1389 #define DEFAULT_DEBUG_LEVEL_SHIFT 3 1390 1391 struct net_device *fm10k_alloc_netdev(void) 1392 { 1393 struct fm10k_intfc *interface; 1394 struct net_device *dev; 1395 1396 dev = alloc_etherdev_mq(sizeof(struct fm10k_intfc), MAX_QUEUES); 1397 if (!dev) 1398 return NULL; 1399 1400 /* set net device and ethtool ops */ 1401 dev->netdev_ops = &fm10k_netdev_ops; 1402 fm10k_set_ethtool_ops(dev); 1403 1404 /* configure default debug level */ 1405 interface = netdev_priv(dev); 1406 interface->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 1407 1408 /* configure default features */ 1409 dev->features |= NETIF_F_IP_CSUM | 1410 NETIF_F_IPV6_CSUM | 1411 NETIF_F_SG | 1412 NETIF_F_TSO | 1413 NETIF_F_TSO6 | 1414 NETIF_F_TSO_ECN | 1415 NETIF_F_GSO_UDP_TUNNEL | 1416 NETIF_F_RXHASH | 1417 NETIF_F_RXCSUM; 1418 1419 /* all features defined to this point should be changeable */ 1420 dev->hw_features |= dev->features; 1421 1422 /* allow user to enable L2 forwarding acceleration */ 1423 dev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD; 1424 1425 /* configure VLAN features */ 1426 dev->vlan_features |= dev->features; 1427 1428 /* configure tunnel offloads */ 1429 dev->hw_enc_features |= NETIF_F_IP_CSUM | 1430 NETIF_F_TSO | 1431 NETIF_F_TSO6 | 1432 NETIF_F_TSO_ECN | 1433 NETIF_F_GSO_UDP_TUNNEL | 1434 NETIF_F_IPV6_CSUM; 1435 1436 /* we want to leave these both on as we cannot disable VLAN tag 1437 * insertion or stripping on the hardware since it is contained 1438 * in the FTAG and not in the frame itself. 1439 */ 1440 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 1441 NETIF_F_HW_VLAN_CTAG_RX | 1442 NETIF_F_HW_VLAN_CTAG_FILTER; 1443 1444 dev->priv_flags |= IFF_UNICAST_FLT; 1445 1446 return dev; 1447 } 1448