1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 1999 - 2018 Intel Corporation. */ 3 4 #include <linux/types.h> 5 #include <linux/module.h> 6 #include <linux/pci.h> 7 #include <linux/netdevice.h> 8 #include <linux/vmalloc.h> 9 #include <linux/string.h> 10 #include <linux/in.h> 11 #include <linux/ip.h> 12 #include <linux/tcp.h> 13 #include <linux/ipv6.h> 14 #include <linux/if_bridge.h> 15 #ifdef NETIF_F_HW_VLAN_CTAG_TX 16 #include <linux/if_vlan.h> 17 #endif 18 19 #include "ixgbe.h" 20 #include "ixgbe_type.h" 21 #include "ixgbe_sriov.h" 22 23 #ifdef CONFIG_PCI_IOV 24 static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter, 25 unsigned int num_vfs) 26 { 27 struct ixgbe_hw *hw = &adapter->hw; 28 struct vf_macvlans *mv_list; 29 int num_vf_macvlans, i; 30 31 num_vf_macvlans = hw->mac.num_rar_entries - 32 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs); 33 if (!num_vf_macvlans) 34 return; 35 36 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans), 37 GFP_KERNEL); 38 if (mv_list) { 39 /* Initialize list of VF macvlans */ 40 INIT_LIST_HEAD(&adapter->vf_mvs.l); 41 for (i = 0; i < num_vf_macvlans; i++) { 42 mv_list[i].vf = -1; 43 mv_list[i].free = true; 44 list_add(&mv_list[i].l, &adapter->vf_mvs.l); 45 } 46 adapter->mv_list = mv_list; 47 } 48 } 49 50 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter, 51 unsigned int num_vfs) 52 { 53 struct ixgbe_hw *hw = &adapter->hw; 54 int i; 55 56 /* Enable VMDq flag so device will be set in VM mode */ 57 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED | 58 IXGBE_FLAG_VMDQ_ENABLED; 59 60 /* Allocate memory for per VF control structures */ 61 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage), 62 GFP_KERNEL); 63 if (!adapter->vfinfo) 64 return -ENOMEM; 65 66 adapter->num_vfs = num_vfs; 67 68 ixgbe_alloc_vf_macvlans(adapter, num_vfs); 69 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs; 70 71 /* Initialize default switching mode VEB */ 72 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 73 adapter->bridge_mode = BRIDGE_MODE_VEB; 74 75 /* limit trafffic classes based on VFs enabled */ 76 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) { 77 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 78 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 79 } else if (num_vfs < 32) { 80 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 81 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 82 } else { 83 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 84 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 85 } 86 87 /* Disable RSC when in SR-IOV mode */ 88 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 89 IXGBE_FLAG2_RSC_ENABLED); 90 91 for (i = 0; i < num_vfs; i++) { 92 /* enable spoof checking for all VFs */ 93 adapter->vfinfo[i].spoofchk_enabled = true; 94 95 /* We support VF RSS querying only for 82599 and x540 96 * devices at the moment. These devices share RSS 97 * indirection table and RSS hash key with PF therefore 98 * we want to disable the querying by default. 99 */ 100 adapter->vfinfo[i].rss_query_enabled = 0; 101 102 /* Untrust all VFs */ 103 adapter->vfinfo[i].trusted = false; 104 105 /* set the default xcast mode */ 106 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE; 107 } 108 109 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs); 110 return 0; 111 } 112 113 /** 114 * ixgbe_get_vfs - Find and take references to all vf devices 115 * @adapter: Pointer to adapter struct 116 */ 117 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter) 118 { 119 struct pci_dev *pdev = adapter->pdev; 120 u16 vendor = pdev->vendor; 121 struct pci_dev *vfdev; 122 int vf = 0; 123 u16 vf_id; 124 int pos; 125 126 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 127 if (!pos) 128 return; 129 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id); 130 131 vfdev = pci_get_device(vendor, vf_id, NULL); 132 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) { 133 if (!vfdev->is_virtfn) 134 continue; 135 if (vfdev->physfn != pdev) 136 continue; 137 if (vf >= adapter->num_vfs) 138 continue; 139 pci_dev_get(vfdev); 140 adapter->vfinfo[vf].vfdev = vfdev; 141 ++vf; 142 } 143 } 144 145 /* Note this function is called when the user wants to enable SR-IOV 146 * VFs using the now deprecated module parameter 147 */ 148 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs) 149 { 150 int pre_existing_vfs = 0; 151 unsigned int num_vfs; 152 153 pre_existing_vfs = pci_num_vf(adapter->pdev); 154 if (!pre_existing_vfs && !max_vfs) 155 return; 156 157 /* If there are pre-existing VFs then we have to force 158 * use of that many - over ride any module parameter value. 159 * This may result from the user unloading the PF driver 160 * while VFs were assigned to guest VMs or because the VFs 161 * have been created via the new PCI SR-IOV sysfs interface. 162 */ 163 if (pre_existing_vfs) { 164 num_vfs = pre_existing_vfs; 165 dev_warn(&adapter->pdev->dev, 166 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); 167 } else { 168 int err; 169 /* 170 * The 82599 supports up to 64 VFs per physical function 171 * but this implementation limits allocation to 63 so that 172 * basic networking resources are still available to the 173 * physical function. If the user requests greater than 174 * 63 VFs then it is an error - reset to default of zero. 175 */ 176 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT); 177 178 err = pci_enable_sriov(adapter->pdev, num_vfs); 179 if (err) { 180 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 181 return; 182 } 183 } 184 185 if (!__ixgbe_enable_sriov(adapter, num_vfs)) { 186 ixgbe_get_vfs(adapter); 187 return; 188 } 189 190 /* If we have gotten to this point then there is no memory available 191 * to manage the VF devices - print message and bail. 192 */ 193 e_err(probe, "Unable to allocate memory for VF Data Storage - " 194 "SRIOV disabled\n"); 195 ixgbe_disable_sriov(adapter); 196 } 197 198 #endif /* #ifdef CONFIG_PCI_IOV */ 199 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 200 { 201 unsigned int num_vfs = adapter->num_vfs, vf; 202 int rss; 203 204 /* set num VFs to 0 to prevent access to vfinfo */ 205 adapter->num_vfs = 0; 206 207 /* put the reference to all of the vf devices */ 208 for (vf = 0; vf < num_vfs; ++vf) { 209 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 210 211 if (!vfdev) 212 continue; 213 adapter->vfinfo[vf].vfdev = NULL; 214 pci_dev_put(vfdev); 215 } 216 217 /* free VF control structures */ 218 kfree(adapter->vfinfo); 219 adapter->vfinfo = NULL; 220 221 /* free macvlan list */ 222 kfree(adapter->mv_list); 223 adapter->mv_list = NULL; 224 225 /* if SR-IOV is already disabled then there is nothing to do */ 226 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 227 return 0; 228 229 #ifdef CONFIG_PCI_IOV 230 /* 231 * If our VFs are assigned we cannot shut down SR-IOV 232 * without causing issues, so just leave the hardware 233 * available but disabled 234 */ 235 if (pci_vfs_assigned(adapter->pdev)) { 236 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 237 return -EPERM; 238 } 239 /* disable iov and allow time for transactions to clear */ 240 pci_disable_sriov(adapter->pdev); 241 #endif 242 243 /* Disable VMDq flag so device will be set in VM mode */ 244 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) { 245 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 246 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 247 rss = min_t(int, ixgbe_max_rss_indices(adapter), 248 num_online_cpus()); 249 } else { 250 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 251 } 252 253 adapter->ring_feature[RING_F_VMDQ].offset = 0; 254 adapter->ring_feature[RING_F_RSS].limit = rss; 255 256 /* take a breather then clean up driver data */ 257 msleep(100); 258 return 0; 259 } 260 261 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 262 { 263 #ifdef CONFIG_PCI_IOV 264 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 265 int pre_existing_vfs = pci_num_vf(dev); 266 int err = 0, num_rx_pools, i, limit; 267 u8 num_tc; 268 269 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 270 err = ixgbe_disable_sriov(adapter); 271 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 272 return num_vfs; 273 274 if (err) 275 return err; 276 277 /* While the SR-IOV capability structure reports total VFs to be 64, 278 * we limit the actual number allocated as below based on two factors. 279 * Num_TCs MAX_VFs 280 * 1 63 281 * <=4 31 282 * >4 15 283 * First, we reserve some transmit/receive resources for the PF. 284 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 285 * account for this, so that we don't accidentally allocate more VFs 286 * than we have available pools. The PCI bus driver already checks for 287 * other values out of range. 288 */ 289 num_tc = adapter->hw_tcs; 290 num_rx_pools = bitmap_weight(adapter->fwd_bitmask, 291 adapter->num_rx_pools); 292 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC : 293 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC; 294 295 if (num_vfs > (limit - num_rx_pools)) { 296 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n", 297 num_tc, num_rx_pools - 1, limit - num_rx_pools); 298 return -EPERM; 299 } 300 301 err = __ixgbe_enable_sriov(adapter, num_vfs); 302 if (err) 303 return err; 304 305 for (i = 0; i < num_vfs; i++) 306 ixgbe_vf_configuration(dev, (i | 0x10000000)); 307 308 /* reset before enabling SRIOV to avoid mailbox issues */ 309 ixgbe_sriov_reinit(adapter); 310 311 err = pci_enable_sriov(dev, num_vfs); 312 if (err) { 313 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 314 return err; 315 } 316 ixgbe_get_vfs(adapter); 317 318 return num_vfs; 319 #else 320 return 0; 321 #endif 322 } 323 324 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 325 { 326 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 327 int err; 328 #ifdef CONFIG_PCI_IOV 329 u32 current_flags = adapter->flags; 330 int prev_num_vf = pci_num_vf(dev); 331 #endif 332 333 err = ixgbe_disable_sriov(adapter); 334 335 /* Only reinit if no error and state changed */ 336 #ifdef CONFIG_PCI_IOV 337 if (!err && (current_flags != adapter->flags || 338 prev_num_vf != pci_num_vf(dev))) 339 ixgbe_sriov_reinit(adapter); 340 #endif 341 342 return err; 343 } 344 345 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 346 { 347 if (num_vfs == 0) 348 return ixgbe_pci_sriov_disable(dev); 349 else 350 return ixgbe_pci_sriov_enable(dev, num_vfs); 351 } 352 353 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 354 u32 *msgbuf, u32 vf) 355 { 356 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 357 >> IXGBE_VT_MSGINFO_SHIFT; 358 u16 *hash_list = (u16 *)&msgbuf[1]; 359 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 360 struct ixgbe_hw *hw = &adapter->hw; 361 int i; 362 u32 vector_bit; 363 u32 vector_reg; 364 u32 mta_reg; 365 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 366 367 /* only so many hash values supported */ 368 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 369 370 /* 371 * salt away the number of multi cast addresses assigned 372 * to this VF for later use to restore when the PF multi cast 373 * list changes 374 */ 375 vfinfo->num_vf_mc_hashes = entries; 376 377 /* 378 * VFs are limited to using the MTA hash table for their multicast 379 * addresses 380 */ 381 for (i = 0; i < entries; i++) { 382 vfinfo->vf_mc_hashes[i] = hash_list[i]; 383 } 384 385 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 386 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 387 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 388 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 389 mta_reg |= BIT(vector_bit); 390 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 391 } 392 vmolr |= IXGBE_VMOLR_ROMPE; 393 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 394 395 return 0; 396 } 397 398 #ifdef CONFIG_PCI_IOV 399 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 400 { 401 struct ixgbe_hw *hw = &adapter->hw; 402 struct vf_data_storage *vfinfo; 403 int i, j; 404 u32 vector_bit; 405 u32 vector_reg; 406 u32 mta_reg; 407 408 for (i = 0; i < adapter->num_vfs; i++) { 409 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 410 vfinfo = &adapter->vfinfo[i]; 411 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 412 hw->addr_ctrl.mta_in_use++; 413 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 414 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 415 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 416 mta_reg |= BIT(vector_bit); 417 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 418 } 419 420 if (vfinfo->num_vf_mc_hashes) 421 vmolr |= IXGBE_VMOLR_ROMPE; 422 else 423 vmolr &= ~IXGBE_VMOLR_ROMPE; 424 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 425 } 426 427 /* Restore any VF macvlans */ 428 ixgbe_full_sync_mac_table(adapter); 429 } 430 #endif 431 432 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 433 u32 vf) 434 { 435 struct ixgbe_hw *hw = &adapter->hw; 436 int err; 437 438 /* If VLAN overlaps with one the PF is currently monitoring make 439 * sure that we are able to allocate a VLVF entry. This may be 440 * redundant but it guarantees PF will maintain visibility to 441 * the VLAN. 442 */ 443 if (add && test_bit(vid, adapter->active_vlans)) { 444 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false); 445 if (err) 446 return err; 447 } 448 449 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false); 450 451 if (add && !err) 452 return err; 453 454 /* If we failed to add the VF VLAN or we are removing the VF VLAN 455 * we may need to drop the PF pool bit in order to allow us to free 456 * up the VLVF resources. 457 */ 458 if (test_bit(vid, adapter->active_vlans) || 459 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 460 ixgbe_update_pf_promisc_vlvf(adapter, vid); 461 462 return err; 463 } 464 465 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 466 { 467 struct ixgbe_hw *hw = &adapter->hw; 468 int max_frame = msgbuf[1]; 469 u32 max_frs; 470 471 /* 472 * For 82599EB we have to keep all PFs and VFs operating with 473 * the same max_frame value in order to avoid sending an oversize 474 * frame to a VF. In order to guarantee this is handled correctly 475 * for all cases we have several special exceptions to take into 476 * account before we can enable the VF for receive 477 */ 478 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 479 struct net_device *dev = adapter->netdev; 480 int pf_max_frame = dev->mtu + ETH_HLEN; 481 u32 reg_offset, vf_shift, vfre; 482 s32 err = 0; 483 484 #ifdef CONFIG_FCOE 485 if (dev->features & NETIF_F_FCOE_MTU) 486 pf_max_frame = max_t(int, pf_max_frame, 487 IXGBE_FCOE_JUMBO_FRAME_SIZE); 488 489 #endif /* CONFIG_FCOE */ 490 switch (adapter->vfinfo[vf].vf_api) { 491 case ixgbe_mbox_api_11: 492 case ixgbe_mbox_api_12: 493 case ixgbe_mbox_api_13: 494 /* Version 1.1 supports jumbo frames on VFs if PF has 495 * jumbo frames enabled which means legacy VFs are 496 * disabled 497 */ 498 if (pf_max_frame > ETH_FRAME_LEN) 499 break; 500 /* fall through */ 501 default: 502 /* If the PF or VF are running w/ jumbo frames enabled 503 * we need to shut down the VF Rx path as we cannot 504 * support jumbo frames on legacy VFs 505 */ 506 if ((pf_max_frame > ETH_FRAME_LEN) || 507 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 508 err = -EINVAL; 509 break; 510 } 511 512 /* determine VF receive enable location */ 513 vf_shift = vf % 32; 514 reg_offset = vf / 32; 515 516 /* enable or disable receive depending on error */ 517 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 518 if (err) 519 vfre &= ~BIT(vf_shift); 520 else 521 vfre |= BIT(vf_shift); 522 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 523 524 if (err) { 525 e_err(drv, "VF max_frame %d out of range\n", max_frame); 526 return err; 527 } 528 } 529 530 /* MTU < 68 is an error and causes problems on some kernels */ 531 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 532 e_err(drv, "VF max_frame %d out of range\n", max_frame); 533 return -EINVAL; 534 } 535 536 /* pull current max frame size from hardware */ 537 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 538 max_frs &= IXGBE_MHADD_MFS_MASK; 539 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 540 541 if (max_frs < max_frame) { 542 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 543 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 544 } 545 546 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 547 548 return 0; 549 } 550 551 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 552 { 553 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 554 vmolr |= IXGBE_VMOLR_BAM; 555 if (aupe) 556 vmolr |= IXGBE_VMOLR_AUPE; 557 else 558 vmolr &= ~IXGBE_VMOLR_AUPE; 559 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 560 } 561 562 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 563 { 564 struct ixgbe_hw *hw = &adapter->hw; 565 566 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 567 } 568 569 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf) 570 { 571 struct ixgbe_hw *hw = &adapter->hw; 572 u32 vlvfb_mask, pool_mask, i; 573 574 /* create mask for VF and other pools */ 575 pool_mask = ~BIT(VMDQ_P(0) % 32); 576 vlvfb_mask = BIT(vf % 32); 577 578 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */ 579 for (i = IXGBE_VLVF_ENTRIES; i--;) { 580 u32 bits[2], vlvfb, vid, vfta, vlvf; 581 u32 word = i * 2 + vf / 32; 582 u32 mask; 583 584 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 585 586 /* if our bit isn't set we can skip it */ 587 if (!(vlvfb & vlvfb_mask)) 588 continue; 589 590 /* clear our bit from vlvfb */ 591 vlvfb ^= vlvfb_mask; 592 593 /* create 64b mask to chedk to see if we should clear VLVF */ 594 bits[word % 2] = vlvfb; 595 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1)); 596 597 /* if other pools are present, just remove ourselves */ 598 if (bits[(VMDQ_P(0) / 32) ^ 1] || 599 (bits[VMDQ_P(0) / 32] & pool_mask)) 600 goto update_vlvfb; 601 602 /* if PF is present, leave VFTA */ 603 if (bits[0] || bits[1]) 604 goto update_vlvf; 605 606 /* if we cannot determine VLAN just remove ourselves */ 607 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 608 if (!vlvf) 609 goto update_vlvfb; 610 611 vid = vlvf & VLAN_VID_MASK; 612 mask = BIT(vid % 32); 613 614 /* clear bit from VFTA */ 615 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32)); 616 if (vfta & mask) 617 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask); 618 update_vlvf: 619 /* clear POOL selection enable */ 620 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0); 621 622 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 623 vlvfb = 0; 624 update_vlvfb: 625 /* clear pool bits */ 626 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb); 627 } 628 } 629 630 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 631 int vf, int index, unsigned char *mac_addr) 632 { 633 struct vf_macvlans *entry; 634 struct list_head *pos; 635 int retval = 0; 636 637 if (index <= 1) { 638 list_for_each(pos, &adapter->vf_mvs.l) { 639 entry = list_entry(pos, struct vf_macvlans, l); 640 if (entry->vf == vf) { 641 entry->vf = -1; 642 entry->free = true; 643 entry->is_macvlan = false; 644 ixgbe_del_mac_filter(adapter, 645 entry->vf_macvlan, vf); 646 } 647 } 648 } 649 650 /* 651 * If index was zero then we were asked to clear the uc list 652 * for the VF. We're done. 653 */ 654 if (!index) 655 return 0; 656 657 entry = NULL; 658 659 list_for_each(pos, &adapter->vf_mvs.l) { 660 entry = list_entry(pos, struct vf_macvlans, l); 661 if (entry->free) 662 break; 663 } 664 665 /* 666 * If we traversed the entire list and didn't find a free entry 667 * then we're out of space on the RAR table. Also entry may 668 * be NULL because the original memory allocation for the list 669 * failed, which is not fatal but does mean we can't support 670 * VF requests for MACVLAN because we couldn't allocate 671 * memory for the list management required. 672 */ 673 if (!entry || !entry->free) 674 return -ENOSPC; 675 676 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 677 if (retval < 0) 678 return retval; 679 680 entry->free = false; 681 entry->is_macvlan = true; 682 entry->vf = vf; 683 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 684 685 return 0; 686 } 687 688 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 689 { 690 struct ixgbe_hw *hw = &adapter->hw; 691 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 692 u8 num_tcs = adapter->hw_tcs; 693 694 /* remove VLAN filters beloning to this VF */ 695 ixgbe_clear_vf_vlans(adapter, vf); 696 697 /* add back PF assigned VLAN or VLAN 0 */ 698 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 699 700 /* reset offloads to defaults */ 701 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 702 703 /* set outgoing tags for VFs */ 704 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 705 ixgbe_clear_vmvir(adapter, vf); 706 } else { 707 if (vfinfo->pf_qos || !num_tcs) 708 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 709 vfinfo->pf_qos, vf); 710 else 711 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 712 adapter->default_up, vf); 713 714 if (vfinfo->spoofchk_enabled) 715 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 716 } 717 718 /* reset multicast table array for vf */ 719 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 720 721 /* Flush and reset the mta with the new values */ 722 ixgbe_set_rx_mode(adapter->netdev); 723 724 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 725 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL); 726 727 /* reset VF api back to unknown */ 728 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 729 } 730 731 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 732 int vf, unsigned char *mac_addr) 733 { 734 s32 retval; 735 736 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 737 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 738 if (retval >= 0) 739 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 740 ETH_ALEN); 741 else 742 memset(adapter->vfinfo[vf].vf_mac_addresses, 0, ETH_ALEN); 743 744 return retval; 745 } 746 747 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 748 { 749 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 750 unsigned int vfn = (event_mask & 0x3f); 751 752 bool enable = ((event_mask & 0x10000000U) != 0); 753 754 if (enable) 755 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 756 757 return 0; 758 } 759 760 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 761 u32 qde) 762 { 763 struct ixgbe_hw *hw = &adapter->hw; 764 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 765 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 766 int i; 767 768 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 769 u32 reg; 770 771 /* flush previous write */ 772 IXGBE_WRITE_FLUSH(hw); 773 774 /* indicate to hardware that we want to set drop enable */ 775 reg = IXGBE_QDE_WRITE | qde; 776 reg |= i << IXGBE_QDE_IDX_SHIFT; 777 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 778 } 779 } 780 781 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 782 { 783 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 784 struct ixgbe_hw *hw = &adapter->hw; 785 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 786 u32 reg, reg_offset, vf_shift; 787 u32 msgbuf[4] = {0, 0, 0, 0}; 788 u8 *addr = (u8 *)(&msgbuf[1]); 789 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 790 int i; 791 792 e_info(probe, "VF Reset msg received from vf %d\n", vf); 793 794 /* reset the filters for the device */ 795 ixgbe_vf_reset_event(adapter, vf); 796 797 /* set vf mac address */ 798 if (!is_zero_ether_addr(vf_mac)) 799 ixgbe_set_vf_mac(adapter, vf, vf_mac); 800 801 vf_shift = vf % 32; 802 reg_offset = vf / 32; 803 804 /* enable transmit for vf */ 805 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 806 reg |= BIT(vf_shift); 807 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 808 809 /* force drop enable for all VF Rx queues */ 810 reg = IXGBE_QDE_ENABLE; 811 if (adapter->vfinfo[vf].pf_vlan) 812 reg |= IXGBE_QDE_HIDE_VLAN; 813 814 ixgbe_write_qde(adapter, vf, reg); 815 816 /* enable receive for vf */ 817 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 818 reg |= BIT(vf_shift); 819 /* 820 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 821 * For more info take a look at ixgbe_set_vf_lpe 822 */ 823 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 824 struct net_device *dev = adapter->netdev; 825 int pf_max_frame = dev->mtu + ETH_HLEN; 826 827 #ifdef CONFIG_FCOE 828 if (dev->features & NETIF_F_FCOE_MTU) 829 pf_max_frame = max_t(int, pf_max_frame, 830 IXGBE_FCOE_JUMBO_FRAME_SIZE); 831 832 #endif /* CONFIG_FCOE */ 833 if (pf_max_frame > ETH_FRAME_LEN) 834 reg &= ~BIT(vf_shift); 835 } 836 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 837 838 /* enable VF mailbox for further messages */ 839 adapter->vfinfo[vf].clear_to_send = true; 840 841 /* Enable counting of spoofed packets in the SSVPC register */ 842 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 843 reg |= BIT(vf_shift); 844 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 845 846 /* 847 * Reset the VFs TDWBAL and TDWBAH registers 848 * which are not cleared by an FLR 849 */ 850 for (i = 0; i < q_per_pool; i++) { 851 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 852 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 853 } 854 855 /* reply to reset with ack and vf mac address */ 856 msgbuf[0] = IXGBE_VF_RESET; 857 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) { 858 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 859 memcpy(addr, vf_mac, ETH_ALEN); 860 } else { 861 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 862 } 863 864 /* 865 * Piggyback the multicast filter type so VF can compute the 866 * correct vectors 867 */ 868 msgbuf[3] = hw->mac.mc_filter_type; 869 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 870 871 return 0; 872 } 873 874 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 875 u32 *msgbuf, u32 vf) 876 { 877 u8 *new_mac = ((u8 *)(&msgbuf[1])); 878 879 if (!is_valid_ether_addr(new_mac)) { 880 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 881 return -1; 882 } 883 884 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 885 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 886 e_warn(drv, 887 "VF %d attempted to override administratively set MAC address\n" 888 "Reload the VF driver to resume operations\n", 889 vf); 890 return -1; 891 } 892 893 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 894 } 895 896 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 897 u32 *msgbuf, u32 vf) 898 { 899 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 900 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 901 u8 tcs = adapter->hw_tcs; 902 903 if (adapter->vfinfo[vf].pf_vlan || tcs) { 904 e_warn(drv, 905 "VF %d attempted to override administratively set VLAN configuration\n" 906 "Reload the VF driver to resume operations\n", 907 vf); 908 return -1; 909 } 910 911 /* VLAN 0 is a special case, don't allow it to be removed */ 912 if (!vid && !add) 913 return 0; 914 915 return ixgbe_set_vf_vlan(adapter, add, vid, vf); 916 } 917 918 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 919 u32 *msgbuf, u32 vf) 920 { 921 u8 *new_mac = ((u8 *)(&msgbuf[1])); 922 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 923 IXGBE_VT_MSGINFO_SHIFT; 924 int err; 925 926 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 927 index > 0) { 928 e_warn(drv, 929 "VF %d requested MACVLAN filter but is administratively denied\n", 930 vf); 931 return -1; 932 } 933 934 /* An non-zero index indicates the VF is setting a filter */ 935 if (index) { 936 if (!is_valid_ether_addr(new_mac)) { 937 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 938 return -1; 939 } 940 941 /* 942 * If the VF is allowed to set MAC filters then turn off 943 * anti-spoofing to avoid false positives. 944 */ 945 if (adapter->vfinfo[vf].spoofchk_enabled) { 946 struct ixgbe_hw *hw = &adapter->hw; 947 948 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf); 949 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 950 } 951 } 952 953 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 954 if (err == -ENOSPC) 955 e_warn(drv, 956 "VF %d has requested a MACVLAN filter but there is no space for it\n", 957 vf); 958 959 return err < 0; 960 } 961 962 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 963 u32 *msgbuf, u32 vf) 964 { 965 int api = msgbuf[1]; 966 967 switch (api) { 968 case ixgbe_mbox_api_10: 969 case ixgbe_mbox_api_11: 970 case ixgbe_mbox_api_12: 971 case ixgbe_mbox_api_13: 972 adapter->vfinfo[vf].vf_api = api; 973 return 0; 974 default: 975 break; 976 } 977 978 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 979 980 return -1; 981 } 982 983 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 984 u32 *msgbuf, u32 vf) 985 { 986 struct net_device *dev = adapter->netdev; 987 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 988 unsigned int default_tc = 0; 989 u8 num_tcs = adapter->hw_tcs; 990 991 /* verify the PF is supporting the correct APIs */ 992 switch (adapter->vfinfo[vf].vf_api) { 993 case ixgbe_mbox_api_20: 994 case ixgbe_mbox_api_11: 995 case ixgbe_mbox_api_12: 996 case ixgbe_mbox_api_13: 997 break; 998 default: 999 return -1; 1000 } 1001 1002 /* only allow 1 Tx queue for bandwidth limiting */ 1003 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1004 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1005 1006 /* if TCs > 1 determine which TC belongs to default user priority */ 1007 if (num_tcs > 1) 1008 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 1009 1010 /* notify VF of need for VLAN tag stripping, and correct queue */ 1011 if (num_tcs) 1012 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 1013 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 1014 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 1015 else 1016 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 1017 1018 /* notify VF of default queue */ 1019 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 1020 1021 return 0; 1022 } 1023 1024 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 1025 { 1026 u32 i, j; 1027 u32 *out_buf = &msgbuf[1]; 1028 const u8 *reta = adapter->rss_indir_tbl; 1029 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); 1030 1031 /* Check if operation is permitted */ 1032 if (!adapter->vfinfo[vf].rss_query_enabled) 1033 return -EPERM; 1034 1035 /* verify the PF is supporting the correct API */ 1036 switch (adapter->vfinfo[vf].vf_api) { 1037 case ixgbe_mbox_api_13: 1038 case ixgbe_mbox_api_12: 1039 break; 1040 default: 1041 return -EOPNOTSUPP; 1042 } 1043 1044 /* This mailbox command is supported (required) only for 82599 and x540 1045 * VFs which support up to 4 RSS queues. Therefore we will compress the 1046 * RETA by saving only 2 bits from each entry. This way we will be able 1047 * to transfer the whole RETA in a single mailbox operation. 1048 */ 1049 for (i = 0; i < reta_size / 16; i++) { 1050 out_buf[i] = 0; 1051 for (j = 0; j < 16; j++) 1052 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); 1053 } 1054 1055 return 0; 1056 } 1057 1058 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, 1059 u32 *msgbuf, u32 vf) 1060 { 1061 u32 *rss_key = &msgbuf[1]; 1062 1063 /* Check if the operation is permitted */ 1064 if (!adapter->vfinfo[vf].rss_query_enabled) 1065 return -EPERM; 1066 1067 /* verify the PF is supporting the correct API */ 1068 switch (adapter->vfinfo[vf].vf_api) { 1069 case ixgbe_mbox_api_13: 1070 case ixgbe_mbox_api_12: 1071 break; 1072 default: 1073 return -EOPNOTSUPP; 1074 } 1075 1076 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE); 1077 1078 return 0; 1079 } 1080 1081 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter, 1082 u32 *msgbuf, u32 vf) 1083 { 1084 struct ixgbe_hw *hw = &adapter->hw; 1085 int xcast_mode = msgbuf[1]; 1086 u32 vmolr, fctrl, disable, enable; 1087 1088 /* verify the PF is supporting the correct APIs */ 1089 switch (adapter->vfinfo[vf].vf_api) { 1090 case ixgbe_mbox_api_12: 1091 /* promisc introduced in 1.3 version */ 1092 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) 1093 return -EOPNOTSUPP; 1094 /* Fall threw */ 1095 case ixgbe_mbox_api_13: 1096 break; 1097 default: 1098 return -EOPNOTSUPP; 1099 } 1100 1101 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI && 1102 !adapter->vfinfo[vf].trusted) { 1103 xcast_mode = IXGBEVF_XCAST_MODE_MULTI; 1104 } 1105 1106 if (adapter->vfinfo[vf].xcast_mode == xcast_mode) 1107 goto out; 1108 1109 switch (xcast_mode) { 1110 case IXGBEVF_XCAST_MODE_NONE: 1111 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1112 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1113 enable = 0; 1114 break; 1115 case IXGBEVF_XCAST_MODE_MULTI: 1116 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1117 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE; 1118 break; 1119 case IXGBEVF_XCAST_MODE_ALLMULTI: 1120 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1121 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; 1122 break; 1123 case IXGBEVF_XCAST_MODE_PROMISC: 1124 if (hw->mac.type <= ixgbe_mac_82599EB) 1125 return -EOPNOTSUPP; 1126 1127 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 1128 if (!(fctrl & IXGBE_FCTRL_UPE)) { 1129 /* VF promisc requires PF in promisc */ 1130 e_warn(drv, 1131 "Enabling VF promisc requires PF in promisc\n"); 1132 return -EPERM; 1133 } 1134 1135 disable = 0; 1136 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1137 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1138 break; 1139 default: 1140 return -EOPNOTSUPP; 1141 } 1142 1143 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 1144 vmolr &= ~disable; 1145 vmolr |= enable; 1146 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 1147 1148 adapter->vfinfo[vf].xcast_mode = xcast_mode; 1149 1150 out: 1151 msgbuf[1] = xcast_mode; 1152 1153 return 0; 1154 } 1155 1156 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1157 { 1158 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 1159 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 1160 struct ixgbe_hw *hw = &adapter->hw; 1161 s32 retval; 1162 1163 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 1164 1165 if (retval) { 1166 pr_err("Error receiving message from VF\n"); 1167 return retval; 1168 } 1169 1170 /* this is a message we already processed, do nothing */ 1171 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 1172 return 0; 1173 1174 /* flush the ack before we write any messages back */ 1175 IXGBE_WRITE_FLUSH(hw); 1176 1177 if (msgbuf[0] == IXGBE_VF_RESET) 1178 return ixgbe_vf_reset_msg(adapter, vf); 1179 1180 /* 1181 * until the vf completes a virtual function reset it should not be 1182 * allowed to start any configuration. 1183 */ 1184 if (!adapter->vfinfo[vf].clear_to_send) { 1185 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1186 ixgbe_write_mbx(hw, msgbuf, 1, vf); 1187 return 0; 1188 } 1189 1190 switch ((msgbuf[0] & 0xFFFF)) { 1191 case IXGBE_VF_SET_MAC_ADDR: 1192 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 1193 break; 1194 case IXGBE_VF_SET_MULTICAST: 1195 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 1196 break; 1197 case IXGBE_VF_SET_VLAN: 1198 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1199 break; 1200 case IXGBE_VF_SET_LPE: 1201 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 1202 break; 1203 case IXGBE_VF_SET_MACVLAN: 1204 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1205 break; 1206 case IXGBE_VF_API_NEGOTIATE: 1207 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 1208 break; 1209 case IXGBE_VF_GET_QUEUES: 1210 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1211 break; 1212 case IXGBE_VF_GET_RETA: 1213 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); 1214 break; 1215 case IXGBE_VF_GET_RSS_KEY: 1216 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); 1217 break; 1218 case IXGBE_VF_UPDATE_XCAST_MODE: 1219 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf); 1220 break; 1221 default: 1222 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1223 retval = IXGBE_ERR_MBX; 1224 break; 1225 } 1226 1227 /* notify the VF of the results of what it sent us */ 1228 if (retval) 1229 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1230 else 1231 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1232 1233 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1234 1235 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1236 1237 return retval; 1238 } 1239 1240 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1241 { 1242 struct ixgbe_hw *hw = &adapter->hw; 1243 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1244 1245 /* if device isn't clear to send it shouldn't be reading either */ 1246 if (!adapter->vfinfo[vf].clear_to_send) 1247 ixgbe_write_mbx(hw, &msg, 1, vf); 1248 } 1249 1250 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1251 { 1252 struct ixgbe_hw *hw = &adapter->hw; 1253 u32 vf; 1254 1255 for (vf = 0; vf < adapter->num_vfs; vf++) { 1256 /* process any reset requests */ 1257 if (!ixgbe_check_for_rst(hw, vf)) 1258 ixgbe_vf_reset_event(adapter, vf); 1259 1260 /* process any messages pending */ 1261 if (!ixgbe_check_for_msg(hw, vf)) 1262 ixgbe_rcv_msg_from_vf(adapter, vf); 1263 1264 /* process any acks */ 1265 if (!ixgbe_check_for_ack(hw, vf)) 1266 ixgbe_rcv_ack_from_vf(adapter, vf); 1267 } 1268 } 1269 1270 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1271 { 1272 struct ixgbe_hw *hw = &adapter->hw; 1273 1274 /* disable transmit and receive for all vfs */ 1275 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1276 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1277 1278 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1279 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1280 } 1281 1282 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf) 1283 { 1284 struct ixgbe_hw *hw = &adapter->hw; 1285 u32 ping; 1286 1287 ping = IXGBE_PF_CONTROL_MSG; 1288 if (adapter->vfinfo[vf].clear_to_send) 1289 ping |= IXGBE_VT_MSGTYPE_CTS; 1290 ixgbe_write_mbx(hw, &ping, 1, vf); 1291 } 1292 1293 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1294 { 1295 struct ixgbe_hw *hw = &adapter->hw; 1296 u32 ping; 1297 int i; 1298 1299 for (i = 0 ; i < adapter->num_vfs; i++) { 1300 ping = IXGBE_PF_CONTROL_MSG; 1301 if (adapter->vfinfo[i].clear_to_send) 1302 ping |= IXGBE_VT_MSGTYPE_CTS; 1303 ixgbe_write_mbx(hw, &ping, 1, i); 1304 } 1305 } 1306 1307 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1308 { 1309 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1310 s32 retval; 1311 1312 if (vf >= adapter->num_vfs) 1313 return -EINVAL; 1314 1315 if (is_valid_ether_addr(mac)) { 1316 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", 1317 mac, vf); 1318 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective."); 1319 1320 retval = ixgbe_set_vf_mac(adapter, vf, mac); 1321 if (retval >= 0) { 1322 adapter->vfinfo[vf].pf_set_mac = true; 1323 1324 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1325 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n"); 1326 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n"); 1327 } 1328 } else { 1329 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n"); 1330 } 1331 } else if (is_zero_ether_addr(mac)) { 1332 unsigned char *vf_mac_addr = 1333 adapter->vfinfo[vf].vf_mac_addresses; 1334 1335 /* nothing to do */ 1336 if (is_zero_ether_addr(vf_mac_addr)) 1337 return 0; 1338 1339 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf); 1340 1341 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf); 1342 if (retval >= 0) { 1343 adapter->vfinfo[vf].pf_set_mac = false; 1344 memcpy(vf_mac_addr, mac, ETH_ALEN); 1345 } else { 1346 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n"); 1347 } 1348 } else { 1349 retval = -EINVAL; 1350 } 1351 1352 return retval; 1353 } 1354 1355 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1356 u16 vlan, u8 qos) 1357 { 1358 struct ixgbe_hw *hw = &adapter->hw; 1359 int err; 1360 1361 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1362 if (err) 1363 goto out; 1364 1365 /* Revoke tagless access via VLAN 0 */ 1366 ixgbe_set_vf_vlan(adapter, false, 0, vf); 1367 1368 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1369 ixgbe_set_vmolr(hw, vf, false); 1370 1371 /* enable hide vlan on X550 */ 1372 if (hw->mac.type >= ixgbe_mac_X550) 1373 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1374 IXGBE_QDE_HIDE_VLAN); 1375 1376 adapter->vfinfo[vf].pf_vlan = vlan; 1377 adapter->vfinfo[vf].pf_qos = qos; 1378 dev_info(&adapter->pdev->dev, 1379 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1380 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1381 dev_warn(&adapter->pdev->dev, 1382 "The VF VLAN has been set, but the PF device is not up.\n"); 1383 dev_warn(&adapter->pdev->dev, 1384 "Bring the PF device up before attempting to use the VF device.\n"); 1385 } 1386 1387 out: 1388 return err; 1389 } 1390 1391 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1392 { 1393 struct ixgbe_hw *hw = &adapter->hw; 1394 int err; 1395 1396 err = ixgbe_set_vf_vlan(adapter, false, 1397 adapter->vfinfo[vf].pf_vlan, vf); 1398 /* Restore tagless access via VLAN 0 */ 1399 ixgbe_set_vf_vlan(adapter, true, 0, vf); 1400 ixgbe_clear_vmvir(adapter, vf); 1401 ixgbe_set_vmolr(hw, vf, true); 1402 1403 /* disable hide VLAN on X550 */ 1404 if (hw->mac.type >= ixgbe_mac_X550) 1405 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1406 1407 adapter->vfinfo[vf].pf_vlan = 0; 1408 adapter->vfinfo[vf].pf_qos = 0; 1409 1410 return err; 1411 } 1412 1413 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, 1414 u8 qos, __be16 vlan_proto) 1415 { 1416 int err = 0; 1417 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1418 1419 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1420 return -EINVAL; 1421 if (vlan_proto != htons(ETH_P_8021Q)) 1422 return -EPROTONOSUPPORT; 1423 if (vlan || qos) { 1424 /* Check if there is already a port VLAN set, if so 1425 * we have to delete the old one first before we 1426 * can set the new one. The usage model had 1427 * previously assumed the user would delete the 1428 * old port VLAN before setting a new one but this 1429 * is not necessarily the case. 1430 */ 1431 if (adapter->vfinfo[vf].pf_vlan) 1432 err = ixgbe_disable_port_vlan(adapter, vf); 1433 if (err) 1434 goto out; 1435 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1436 } else { 1437 err = ixgbe_disable_port_vlan(adapter, vf); 1438 } 1439 1440 out: 1441 return err; 1442 } 1443 1444 int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1445 { 1446 switch (adapter->link_speed) { 1447 case IXGBE_LINK_SPEED_100_FULL: 1448 return 100; 1449 case IXGBE_LINK_SPEED_1GB_FULL: 1450 return 1000; 1451 case IXGBE_LINK_SPEED_10GB_FULL: 1452 return 10000; 1453 default: 1454 return 0; 1455 } 1456 } 1457 1458 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1459 { 1460 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1461 struct ixgbe_hw *hw = &adapter->hw; 1462 u32 bcnrc_val = 0; 1463 u16 queue, queues_per_pool; 1464 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1465 1466 if (tx_rate) { 1467 /* start with base link speed value */ 1468 bcnrc_val = adapter->vf_rate_link_speed; 1469 1470 /* Calculate the rate factor values to set */ 1471 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1472 bcnrc_val /= tx_rate; 1473 1474 /* clear everything but the rate factor */ 1475 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1476 IXGBE_RTTBCNRC_RF_DEC_MASK; 1477 1478 /* enable the rate scheduler */ 1479 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1480 } 1481 1482 /* 1483 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1484 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1485 * and 0x004 otherwise. 1486 */ 1487 switch (hw->mac.type) { 1488 case ixgbe_mac_82599EB: 1489 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1490 break; 1491 case ixgbe_mac_X540: 1492 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1493 break; 1494 default: 1495 break; 1496 } 1497 1498 /* determine how many queues per pool based on VMDq mask */ 1499 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1500 1501 /* write value for all Tx queues belonging to VF */ 1502 for (queue = 0; queue < queues_per_pool; queue++) { 1503 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1504 1505 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1506 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1507 } 1508 } 1509 1510 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1511 { 1512 int i; 1513 1514 /* VF Tx rate limit was not set */ 1515 if (!adapter->vf_rate_link_speed) 1516 return; 1517 1518 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1519 adapter->vf_rate_link_speed = 0; 1520 dev_info(&adapter->pdev->dev, 1521 "Link speed has been changed. VF Transmit rate is disabled\n"); 1522 } 1523 1524 for (i = 0; i < adapter->num_vfs; i++) { 1525 if (!adapter->vf_rate_link_speed) 1526 adapter->vfinfo[i].tx_rate = 0; 1527 1528 ixgbe_set_vf_rate_limit(adapter, i); 1529 } 1530 } 1531 1532 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1533 int max_tx_rate) 1534 { 1535 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1536 int link_speed; 1537 1538 /* verify VF is active */ 1539 if (vf >= adapter->num_vfs) 1540 return -EINVAL; 1541 1542 /* verify link is up */ 1543 if (!adapter->link_up) 1544 return -EINVAL; 1545 1546 /* verify we are linked at 10Gbps */ 1547 link_speed = ixgbe_link_mbps(adapter); 1548 if (link_speed != 10000) 1549 return -EINVAL; 1550 1551 if (min_tx_rate) 1552 return -EINVAL; 1553 1554 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1555 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1556 return -EINVAL; 1557 1558 /* store values */ 1559 adapter->vf_rate_link_speed = link_speed; 1560 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1561 1562 /* update hardware configuration */ 1563 ixgbe_set_vf_rate_limit(adapter, vf); 1564 1565 return 0; 1566 } 1567 1568 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1569 { 1570 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1571 struct ixgbe_hw *hw = &adapter->hw; 1572 1573 if (vf >= adapter->num_vfs) 1574 return -EINVAL; 1575 1576 adapter->vfinfo[vf].spoofchk_enabled = setting; 1577 1578 /* configure MAC spoofing */ 1579 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf); 1580 1581 /* configure VLAN spoofing */ 1582 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf); 1583 1584 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be 1585 * calling set_ethertype_anti_spoofing for each VF in loop below 1586 */ 1587 if (hw->mac.ops.set_ethertype_anti_spoofing) { 1588 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP), 1589 (IXGBE_ETQF_FILTER_EN | 1590 IXGBE_ETQF_TX_ANTISPOOF | 1591 IXGBE_ETH_P_LLDP)); 1592 1593 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC), 1594 (IXGBE_ETQF_FILTER_EN | 1595 IXGBE_ETQF_TX_ANTISPOOF | 1596 ETH_P_PAUSE)); 1597 1598 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf); 1599 } 1600 1601 return 0; 1602 } 1603 1604 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, 1605 bool setting) 1606 { 1607 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1608 1609 /* This operation is currently supported only for 82599 and x540 1610 * devices. 1611 */ 1612 if (adapter->hw.mac.type < ixgbe_mac_82599EB || 1613 adapter->hw.mac.type >= ixgbe_mac_X550) 1614 return -EOPNOTSUPP; 1615 1616 if (vf >= adapter->num_vfs) 1617 return -EINVAL; 1618 1619 adapter->vfinfo[vf].rss_query_enabled = setting; 1620 1621 return 0; 1622 } 1623 1624 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) 1625 { 1626 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1627 1628 if (vf >= adapter->num_vfs) 1629 return -EINVAL; 1630 1631 /* nothing to do */ 1632 if (adapter->vfinfo[vf].trusted == setting) 1633 return 0; 1634 1635 adapter->vfinfo[vf].trusted = setting; 1636 1637 /* reset VF to reconfigure features */ 1638 adapter->vfinfo[vf].clear_to_send = false; 1639 ixgbe_ping_vf(adapter, vf); 1640 1641 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not "); 1642 1643 return 0; 1644 } 1645 1646 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1647 int vf, struct ifla_vf_info *ivi) 1648 { 1649 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1650 if (vf >= adapter->num_vfs) 1651 return -EINVAL; 1652 ivi->vf = vf; 1653 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1654 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1655 ivi->min_tx_rate = 0; 1656 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1657 ivi->qos = adapter->vfinfo[vf].pf_qos; 1658 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1659 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; 1660 ivi->trusted = adapter->vfinfo[vf].trusted; 1661 return 0; 1662 } 1663