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 if (adapter->xdp_prog) { 57 e_warn(probe, "SRIOV is not supported with XDP\n"); 58 return -EINVAL; 59 } 60 61 /* Enable VMDq flag so device will be set in VM mode */ 62 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED | 63 IXGBE_FLAG_VMDQ_ENABLED; 64 65 /* Allocate memory for per VF control structures */ 66 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage), 67 GFP_KERNEL); 68 if (!adapter->vfinfo) 69 return -ENOMEM; 70 71 adapter->num_vfs = num_vfs; 72 73 ixgbe_alloc_vf_macvlans(adapter, num_vfs); 74 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs; 75 76 /* Initialize default switching mode VEB */ 77 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 78 adapter->bridge_mode = BRIDGE_MODE_VEB; 79 80 /* limit trafffic classes based on VFs enabled */ 81 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) { 82 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 83 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 84 } else if (num_vfs < 32) { 85 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 86 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 87 } else { 88 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 89 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 90 } 91 92 /* Disable RSC when in SR-IOV mode */ 93 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 94 IXGBE_FLAG2_RSC_ENABLED); 95 96 for (i = 0; i < num_vfs; i++) { 97 /* enable spoof checking for all VFs */ 98 adapter->vfinfo[i].spoofchk_enabled = true; 99 100 /* We support VF RSS querying only for 82599 and x540 101 * devices at the moment. These devices share RSS 102 * indirection table and RSS hash key with PF therefore 103 * we want to disable the querying by default. 104 */ 105 adapter->vfinfo[i].rss_query_enabled = false; 106 107 /* Untrust all VFs */ 108 adapter->vfinfo[i].trusted = false; 109 110 /* set the default xcast mode */ 111 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE; 112 } 113 114 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs); 115 return 0; 116 } 117 118 /** 119 * ixgbe_get_vfs - Find and take references to all vf devices 120 * @adapter: Pointer to adapter struct 121 */ 122 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter) 123 { 124 struct pci_dev *pdev = adapter->pdev; 125 u16 vendor = pdev->vendor; 126 struct pci_dev *vfdev; 127 int vf = 0; 128 u16 vf_id; 129 int pos; 130 131 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 132 if (!pos) 133 return; 134 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id); 135 136 vfdev = pci_get_device(vendor, vf_id, NULL); 137 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) { 138 if (!vfdev->is_virtfn) 139 continue; 140 if (vfdev->physfn != pdev) 141 continue; 142 if (vf >= adapter->num_vfs) 143 continue; 144 pci_dev_get(vfdev); 145 adapter->vfinfo[vf].vfdev = vfdev; 146 ++vf; 147 } 148 } 149 150 /* Note this function is called when the user wants to enable SR-IOV 151 * VFs using the now deprecated module parameter 152 */ 153 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs) 154 { 155 int pre_existing_vfs = 0; 156 unsigned int num_vfs; 157 158 pre_existing_vfs = pci_num_vf(adapter->pdev); 159 if (!pre_existing_vfs && !max_vfs) 160 return; 161 162 /* If there are pre-existing VFs then we have to force 163 * use of that many - over ride any module parameter value. 164 * This may result from the user unloading the PF driver 165 * while VFs were assigned to guest VMs or because the VFs 166 * have been created via the new PCI SR-IOV sysfs interface. 167 */ 168 if (pre_existing_vfs) { 169 num_vfs = pre_existing_vfs; 170 dev_warn(&adapter->pdev->dev, 171 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); 172 } else { 173 int err; 174 /* 175 * The 82599 supports up to 64 VFs per physical function 176 * but this implementation limits allocation to 63 so that 177 * basic networking resources are still available to the 178 * physical function. If the user requests greater than 179 * 63 VFs then it is an error - reset to default of zero. 180 */ 181 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT); 182 183 err = pci_enable_sriov(adapter->pdev, num_vfs); 184 if (err) { 185 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 186 return; 187 } 188 } 189 190 if (!__ixgbe_enable_sriov(adapter, num_vfs)) { 191 ixgbe_get_vfs(adapter); 192 return; 193 } 194 195 /* If we have gotten to this point then there is no memory available 196 * to manage the VF devices - print message and bail. 197 */ 198 e_err(probe, "Unable to allocate memory for VF Data Storage - " 199 "SRIOV disabled\n"); 200 ixgbe_disable_sriov(adapter); 201 } 202 203 #endif /* #ifdef CONFIG_PCI_IOV */ 204 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 205 { 206 unsigned int num_vfs = adapter->num_vfs, vf; 207 int rss; 208 209 /* set num VFs to 0 to prevent access to vfinfo */ 210 adapter->num_vfs = 0; 211 212 /* put the reference to all of the vf devices */ 213 for (vf = 0; vf < num_vfs; ++vf) { 214 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 215 216 if (!vfdev) 217 continue; 218 adapter->vfinfo[vf].vfdev = NULL; 219 pci_dev_put(vfdev); 220 } 221 222 /* free VF control structures */ 223 kfree(adapter->vfinfo); 224 adapter->vfinfo = NULL; 225 226 /* free macvlan list */ 227 kfree(adapter->mv_list); 228 adapter->mv_list = NULL; 229 230 /* if SR-IOV is already disabled then there is nothing to do */ 231 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 232 return 0; 233 234 #ifdef CONFIG_PCI_IOV 235 /* 236 * If our VFs are assigned we cannot shut down SR-IOV 237 * without causing issues, so just leave the hardware 238 * available but disabled 239 */ 240 if (pci_vfs_assigned(adapter->pdev)) { 241 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 242 return -EPERM; 243 } 244 /* disable iov and allow time for transactions to clear */ 245 pci_disable_sriov(adapter->pdev); 246 #endif 247 248 /* Disable VMDq flag so device will be set in VM mode */ 249 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) { 250 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 251 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 252 rss = min_t(int, ixgbe_max_rss_indices(adapter), 253 num_online_cpus()); 254 } else { 255 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 256 } 257 258 adapter->ring_feature[RING_F_VMDQ].offset = 0; 259 adapter->ring_feature[RING_F_RSS].limit = rss; 260 261 /* take a breather then clean up driver data */ 262 msleep(100); 263 return 0; 264 } 265 266 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 267 { 268 #ifdef CONFIG_PCI_IOV 269 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 270 int pre_existing_vfs = pci_num_vf(dev); 271 int err = 0, num_rx_pools, i, limit; 272 u8 num_tc; 273 274 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 275 err = ixgbe_disable_sriov(adapter); 276 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 277 return num_vfs; 278 279 if (err) 280 return err; 281 282 /* While the SR-IOV capability structure reports total VFs to be 64, 283 * we limit the actual number allocated as below based on two factors. 284 * Num_TCs MAX_VFs 285 * 1 63 286 * <=4 31 287 * >4 15 288 * First, we reserve some transmit/receive resources for the PF. 289 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 290 * account for this, so that we don't accidentally allocate more VFs 291 * than we have available pools. The PCI bus driver already checks for 292 * other values out of range. 293 */ 294 num_tc = adapter->hw_tcs; 295 num_rx_pools = bitmap_weight(adapter->fwd_bitmask, 296 adapter->num_rx_pools); 297 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC : 298 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC; 299 300 if (num_vfs > (limit - num_rx_pools)) { 301 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n", 302 num_tc, num_rx_pools - 1, limit - num_rx_pools); 303 return -EPERM; 304 } 305 306 err = __ixgbe_enable_sriov(adapter, num_vfs); 307 if (err) 308 return err; 309 310 for (i = 0; i < num_vfs; i++) 311 ixgbe_vf_configuration(dev, (i | 0x10000000)); 312 313 /* reset before enabling SRIOV to avoid mailbox issues */ 314 ixgbe_sriov_reinit(adapter); 315 316 err = pci_enable_sriov(dev, num_vfs); 317 if (err) { 318 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 319 return err; 320 } 321 ixgbe_get_vfs(adapter); 322 323 return num_vfs; 324 #else 325 return 0; 326 #endif 327 } 328 329 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 330 { 331 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 332 int err; 333 #ifdef CONFIG_PCI_IOV 334 u32 current_flags = adapter->flags; 335 int prev_num_vf = pci_num_vf(dev); 336 #endif 337 338 err = ixgbe_disable_sriov(adapter); 339 340 /* Only reinit if no error and state changed */ 341 #ifdef CONFIG_PCI_IOV 342 if (!err && (current_flags != adapter->flags || 343 prev_num_vf != pci_num_vf(dev))) 344 ixgbe_sriov_reinit(adapter); 345 #endif 346 347 return err; 348 } 349 350 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 351 { 352 if (num_vfs == 0) 353 return ixgbe_pci_sriov_disable(dev); 354 else 355 return ixgbe_pci_sriov_enable(dev, num_vfs); 356 } 357 358 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 359 u32 *msgbuf, u32 vf) 360 { 361 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 362 >> IXGBE_VT_MSGINFO_SHIFT; 363 u16 *hash_list = (u16 *)&msgbuf[1]; 364 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 365 struct ixgbe_hw *hw = &adapter->hw; 366 int i; 367 u32 vector_bit; 368 u32 vector_reg; 369 u32 mta_reg; 370 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 371 372 /* only so many hash values supported */ 373 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 374 375 /* 376 * salt away the number of multi cast addresses assigned 377 * to this VF for later use to restore when the PF multi cast 378 * list changes 379 */ 380 vfinfo->num_vf_mc_hashes = entries; 381 382 /* 383 * VFs are limited to using the MTA hash table for their multicast 384 * addresses 385 */ 386 for (i = 0; i < entries; i++) { 387 vfinfo->vf_mc_hashes[i] = hash_list[i]; 388 } 389 390 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 391 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 392 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 393 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 394 mta_reg |= BIT(vector_bit); 395 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 396 } 397 vmolr |= IXGBE_VMOLR_ROMPE; 398 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 399 400 return 0; 401 } 402 403 #ifdef CONFIG_PCI_IOV 404 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 405 { 406 struct ixgbe_hw *hw = &adapter->hw; 407 struct vf_data_storage *vfinfo; 408 int i, j; 409 u32 vector_bit; 410 u32 vector_reg; 411 u32 mta_reg; 412 413 for (i = 0; i < adapter->num_vfs; i++) { 414 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 415 vfinfo = &adapter->vfinfo[i]; 416 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 417 hw->addr_ctrl.mta_in_use++; 418 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 419 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 420 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 421 mta_reg |= BIT(vector_bit); 422 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 423 } 424 425 if (vfinfo->num_vf_mc_hashes) 426 vmolr |= IXGBE_VMOLR_ROMPE; 427 else 428 vmolr &= ~IXGBE_VMOLR_ROMPE; 429 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 430 } 431 432 /* Restore any VF macvlans */ 433 ixgbe_full_sync_mac_table(adapter); 434 } 435 #endif 436 437 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 438 u32 vf) 439 { 440 struct ixgbe_hw *hw = &adapter->hw; 441 int err; 442 443 /* If VLAN overlaps with one the PF is currently monitoring make 444 * sure that we are able to allocate a VLVF entry. This may be 445 * redundant but it guarantees PF will maintain visibility to 446 * the VLAN. 447 */ 448 if (add && test_bit(vid, adapter->active_vlans)) { 449 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false); 450 if (err) 451 return err; 452 } 453 454 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false); 455 456 if (add && !err) 457 return err; 458 459 /* If we failed to add the VF VLAN or we are removing the VF VLAN 460 * we may need to drop the PF pool bit in order to allow us to free 461 * up the VLVF resources. 462 */ 463 if (test_bit(vid, adapter->active_vlans) || 464 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 465 ixgbe_update_pf_promisc_vlvf(adapter, vid); 466 467 return err; 468 } 469 470 static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf) 471 { 472 struct ixgbe_hw *hw = &adapter->hw; 473 u32 max_frs; 474 475 if (max_frame < ETH_MIN_MTU || max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 476 e_err(drv, "VF max_frame %d out of range\n", max_frame); 477 return -EINVAL; 478 } 479 480 /* 481 * For 82599EB we have to keep all PFs and VFs operating with 482 * the same max_frame value in order to avoid sending an oversize 483 * frame to a VF. In order to guarantee this is handled correctly 484 * for all cases we have several special exceptions to take into 485 * account before we can enable the VF for receive 486 */ 487 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 488 struct net_device *dev = adapter->netdev; 489 int pf_max_frame = dev->mtu + ETH_HLEN; 490 u32 reg_offset, vf_shift, vfre; 491 s32 err = 0; 492 493 #ifdef CONFIG_FCOE 494 if (dev->features & NETIF_F_FCOE_MTU) 495 pf_max_frame = max_t(int, pf_max_frame, 496 IXGBE_FCOE_JUMBO_FRAME_SIZE); 497 498 #endif /* CONFIG_FCOE */ 499 switch (adapter->vfinfo[vf].vf_api) { 500 case ixgbe_mbox_api_11: 501 case ixgbe_mbox_api_12: 502 case ixgbe_mbox_api_13: 503 case ixgbe_mbox_api_14: 504 /* Version 1.1 supports jumbo frames on VFs if PF has 505 * jumbo frames enabled which means legacy VFs are 506 * disabled 507 */ 508 if (pf_max_frame > ETH_FRAME_LEN) 509 break; 510 fallthrough; 511 default: 512 /* If the PF or VF are running w/ jumbo frames enabled 513 * we need to shut down the VF Rx path as we cannot 514 * support jumbo frames on legacy VFs 515 */ 516 if ((pf_max_frame > ETH_FRAME_LEN) || 517 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 518 err = -EINVAL; 519 break; 520 } 521 522 /* determine VF receive enable location */ 523 vf_shift = vf % 32; 524 reg_offset = vf / 32; 525 526 /* enable or disable receive depending on error */ 527 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 528 if (err) 529 vfre &= ~BIT(vf_shift); 530 else 531 vfre |= BIT(vf_shift); 532 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 533 534 if (err) { 535 e_err(drv, "VF max_frame %d out of range\n", max_frame); 536 return err; 537 } 538 } 539 540 /* pull current max frame size from hardware */ 541 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 542 max_frs &= IXGBE_MHADD_MFS_MASK; 543 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 544 545 if (max_frs < max_frame) { 546 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 547 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 548 } 549 550 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 551 552 return 0; 553 } 554 555 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 556 { 557 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 558 vmolr |= IXGBE_VMOLR_BAM; 559 if (aupe) 560 vmolr |= IXGBE_VMOLR_AUPE; 561 else 562 vmolr &= ~IXGBE_VMOLR_AUPE; 563 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 564 } 565 566 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 567 { 568 struct ixgbe_hw *hw = &adapter->hw; 569 570 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 571 } 572 573 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf) 574 { 575 struct ixgbe_hw *hw = &adapter->hw; 576 u32 vlvfb_mask, pool_mask, i; 577 578 /* create mask for VF and other pools */ 579 pool_mask = ~BIT(VMDQ_P(0) % 32); 580 vlvfb_mask = BIT(vf % 32); 581 582 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */ 583 for (i = IXGBE_VLVF_ENTRIES; i--;) { 584 u32 bits[2], vlvfb, vid, vfta, vlvf; 585 u32 word = i * 2 + vf / 32; 586 u32 mask; 587 588 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 589 590 /* if our bit isn't set we can skip it */ 591 if (!(vlvfb & vlvfb_mask)) 592 continue; 593 594 /* clear our bit from vlvfb */ 595 vlvfb ^= vlvfb_mask; 596 597 /* create 64b mask to chedk to see if we should clear VLVF */ 598 bits[word % 2] = vlvfb; 599 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1)); 600 601 /* if other pools are present, just remove ourselves */ 602 if (bits[(VMDQ_P(0) / 32) ^ 1] || 603 (bits[VMDQ_P(0) / 32] & pool_mask)) 604 goto update_vlvfb; 605 606 /* if PF is present, leave VFTA */ 607 if (bits[0] || bits[1]) 608 goto update_vlvf; 609 610 /* if we cannot determine VLAN just remove ourselves */ 611 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 612 if (!vlvf) 613 goto update_vlvfb; 614 615 vid = vlvf & VLAN_VID_MASK; 616 mask = BIT(vid % 32); 617 618 /* clear bit from VFTA */ 619 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32)); 620 if (vfta & mask) 621 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask); 622 update_vlvf: 623 /* clear POOL selection enable */ 624 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0); 625 626 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 627 vlvfb = 0; 628 update_vlvfb: 629 /* clear pool bits */ 630 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb); 631 } 632 } 633 634 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 635 int vf, int index, unsigned char *mac_addr) 636 { 637 struct vf_macvlans *entry; 638 struct list_head *pos; 639 int retval = 0; 640 641 if (index <= 1) { 642 list_for_each(pos, &adapter->vf_mvs.l) { 643 entry = list_entry(pos, struct vf_macvlans, l); 644 if (entry->vf == vf) { 645 entry->vf = -1; 646 entry->free = true; 647 entry->is_macvlan = false; 648 ixgbe_del_mac_filter(adapter, 649 entry->vf_macvlan, vf); 650 } 651 } 652 } 653 654 /* 655 * If index was zero then we were asked to clear the uc list 656 * for the VF. We're done. 657 */ 658 if (!index) 659 return 0; 660 661 entry = NULL; 662 663 list_for_each(pos, &adapter->vf_mvs.l) { 664 entry = list_entry(pos, struct vf_macvlans, l); 665 if (entry->free) 666 break; 667 } 668 669 /* 670 * If we traversed the entire list and didn't find a free entry 671 * then we're out of space on the RAR table. Also entry may 672 * be NULL because the original memory allocation for the list 673 * failed, which is not fatal but does mean we can't support 674 * VF requests for MACVLAN because we couldn't allocate 675 * memory for the list management required. 676 */ 677 if (!entry || !entry->free) 678 return -ENOSPC; 679 680 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 681 if (retval < 0) 682 return retval; 683 684 entry->free = false; 685 entry->is_macvlan = true; 686 entry->vf = vf; 687 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 688 689 return 0; 690 } 691 692 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 693 { 694 struct ixgbe_hw *hw = &adapter->hw; 695 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 696 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 697 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 698 u8 num_tcs = adapter->hw_tcs; 699 u32 reg_val; 700 u32 queue; 701 702 /* remove VLAN filters beloning to this VF */ 703 ixgbe_clear_vf_vlans(adapter, vf); 704 705 /* add back PF assigned VLAN or VLAN 0 */ 706 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 707 708 /* reset offloads to defaults */ 709 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 710 711 /* set outgoing tags for VFs */ 712 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 713 ixgbe_clear_vmvir(adapter, vf); 714 } else { 715 if (vfinfo->pf_qos || !num_tcs) 716 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 717 vfinfo->pf_qos, vf); 718 else 719 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 720 adapter->default_up, vf); 721 722 if (vfinfo->spoofchk_enabled) { 723 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 724 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf); 725 } 726 } 727 728 /* reset multicast table array for vf */ 729 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 730 731 /* clear any ipsec table info */ 732 ixgbe_ipsec_vf_clear(adapter, vf); 733 734 /* Flush and reset the mta with the new values */ 735 ixgbe_set_rx_mode(adapter->netdev); 736 737 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 738 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL); 739 740 /* reset VF api back to unknown */ 741 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 742 743 /* Restart each queue for given VF */ 744 for (queue = 0; queue < q_per_pool; queue++) { 745 unsigned int reg_idx = (vf * q_per_pool) + queue; 746 747 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx)); 748 749 /* Re-enabling only configured queues */ 750 if (reg_val) { 751 reg_val |= IXGBE_TXDCTL_ENABLE; 752 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val); 753 reg_val &= ~IXGBE_TXDCTL_ENABLE; 754 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val); 755 } 756 } 757 758 IXGBE_WRITE_FLUSH(hw); 759 } 760 761 static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf) 762 { 763 struct ixgbe_hw *hw = &adapter->hw; 764 u32 word; 765 766 /* Clear VF's mailbox memory */ 767 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++) 768 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0); 769 770 IXGBE_WRITE_FLUSH(hw); 771 } 772 773 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 774 int vf, unsigned char *mac_addr) 775 { 776 s32 retval; 777 778 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 779 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 780 if (retval >= 0) 781 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 782 ETH_ALEN); 783 else 784 eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses); 785 786 return retval; 787 } 788 789 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 790 { 791 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 792 unsigned int vfn = (event_mask & 0x3f); 793 794 bool enable = ((event_mask & 0x10000000U) != 0); 795 796 if (enable) 797 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 798 799 return 0; 800 } 801 802 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 803 u32 qde) 804 { 805 struct ixgbe_hw *hw = &adapter->hw; 806 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 807 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 808 int i; 809 810 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 811 u32 reg; 812 813 /* flush previous write */ 814 IXGBE_WRITE_FLUSH(hw); 815 816 /* indicate to hardware that we want to set drop enable */ 817 reg = IXGBE_QDE_WRITE | qde; 818 reg |= i << IXGBE_QDE_IDX_SHIFT; 819 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 820 } 821 } 822 823 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 824 { 825 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 826 struct ixgbe_hw *hw = &adapter->hw; 827 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 828 u32 reg, reg_offset, vf_shift; 829 u32 msgbuf[4] = {0, 0, 0, 0}; 830 u8 *addr = (u8 *)(&msgbuf[1]); 831 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 832 int i; 833 834 e_info(probe, "VF Reset msg received from vf %d\n", vf); 835 836 /* reset the filters for the device */ 837 ixgbe_vf_reset_event(adapter, vf); 838 839 ixgbe_vf_clear_mbx(adapter, vf); 840 841 /* set vf mac address */ 842 if (!is_zero_ether_addr(vf_mac)) 843 ixgbe_set_vf_mac(adapter, vf, vf_mac); 844 845 vf_shift = vf % 32; 846 reg_offset = vf / 32; 847 848 /* enable transmit for vf */ 849 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 850 reg |= BIT(vf_shift); 851 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 852 853 /* force drop enable for all VF Rx queues */ 854 reg = IXGBE_QDE_ENABLE; 855 if (adapter->vfinfo[vf].pf_vlan) 856 reg |= IXGBE_QDE_HIDE_VLAN; 857 858 ixgbe_write_qde(adapter, vf, reg); 859 860 /* enable receive for vf */ 861 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 862 reg |= BIT(vf_shift); 863 /* 864 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 865 * For more info take a look at ixgbe_set_vf_lpe 866 */ 867 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 868 struct net_device *dev = adapter->netdev; 869 int pf_max_frame = dev->mtu + ETH_HLEN; 870 871 #ifdef CONFIG_FCOE 872 if (dev->features & NETIF_F_FCOE_MTU) 873 pf_max_frame = max_t(int, pf_max_frame, 874 IXGBE_FCOE_JUMBO_FRAME_SIZE); 875 876 #endif /* CONFIG_FCOE */ 877 if (pf_max_frame > ETH_FRAME_LEN) 878 reg &= ~BIT(vf_shift); 879 } 880 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 881 882 /* enable VF mailbox for further messages */ 883 adapter->vfinfo[vf].clear_to_send = true; 884 885 /* Enable counting of spoofed packets in the SSVPC register */ 886 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 887 reg |= BIT(vf_shift); 888 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 889 890 /* 891 * Reset the VFs TDWBAL and TDWBAH registers 892 * which are not cleared by an FLR 893 */ 894 for (i = 0; i < q_per_pool; i++) { 895 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 896 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 897 } 898 899 /* reply to reset with ack and vf mac address */ 900 msgbuf[0] = IXGBE_VF_RESET; 901 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) { 902 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 903 memcpy(addr, vf_mac, ETH_ALEN); 904 } else { 905 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 906 } 907 908 /* 909 * Piggyback the multicast filter type so VF can compute the 910 * correct vectors 911 */ 912 msgbuf[3] = hw->mac.mc_filter_type; 913 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 914 915 return 0; 916 } 917 918 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 919 u32 *msgbuf, u32 vf) 920 { 921 u8 *new_mac = ((u8 *)(&msgbuf[1])); 922 923 if (!is_valid_ether_addr(new_mac)) { 924 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 925 return -1; 926 } 927 928 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 929 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 930 e_warn(drv, 931 "VF %d attempted to override administratively set MAC address\n" 932 "Reload the VF driver to resume operations\n", 933 vf); 934 return -1; 935 } 936 937 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 938 } 939 940 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 941 u32 *msgbuf, u32 vf) 942 { 943 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 944 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 945 u8 tcs = adapter->hw_tcs; 946 947 if (adapter->vfinfo[vf].pf_vlan || tcs) { 948 e_warn(drv, 949 "VF %d attempted to override administratively set VLAN configuration\n" 950 "Reload the VF driver to resume operations\n", 951 vf); 952 return -1; 953 } 954 955 /* VLAN 0 is a special case, don't allow it to be removed */ 956 if (!vid && !add) 957 return 0; 958 959 return ixgbe_set_vf_vlan(adapter, add, vid, vf); 960 } 961 962 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 963 u32 *msgbuf, u32 vf) 964 { 965 u8 *new_mac = ((u8 *)(&msgbuf[1])); 966 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 967 IXGBE_VT_MSGINFO_SHIFT; 968 int err; 969 970 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 971 index > 0) { 972 e_warn(drv, 973 "VF %d requested MACVLAN filter but is administratively denied\n", 974 vf); 975 return -1; 976 } 977 978 /* An non-zero index indicates the VF is setting a filter */ 979 if (index) { 980 if (!is_valid_ether_addr(new_mac)) { 981 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 982 return -1; 983 } 984 985 /* 986 * If the VF is allowed to set MAC filters then turn off 987 * anti-spoofing to avoid false positives. 988 */ 989 if (adapter->vfinfo[vf].spoofchk_enabled) { 990 struct ixgbe_hw *hw = &adapter->hw; 991 992 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf); 993 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 994 } 995 } 996 997 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 998 if (err == -ENOSPC) 999 e_warn(drv, 1000 "VF %d has requested a MACVLAN filter but there is no space for it\n", 1001 vf); 1002 1003 return err < 0; 1004 } 1005 1006 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 1007 u32 *msgbuf, u32 vf) 1008 { 1009 int api = msgbuf[1]; 1010 1011 switch (api) { 1012 case ixgbe_mbox_api_10: 1013 case ixgbe_mbox_api_11: 1014 case ixgbe_mbox_api_12: 1015 case ixgbe_mbox_api_13: 1016 case ixgbe_mbox_api_14: 1017 adapter->vfinfo[vf].vf_api = api; 1018 return 0; 1019 default: 1020 break; 1021 } 1022 1023 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 1024 1025 return -1; 1026 } 1027 1028 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 1029 u32 *msgbuf, u32 vf) 1030 { 1031 struct net_device *dev = adapter->netdev; 1032 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1033 unsigned int default_tc = 0; 1034 u8 num_tcs = adapter->hw_tcs; 1035 1036 /* verify the PF is supporting the correct APIs */ 1037 switch (adapter->vfinfo[vf].vf_api) { 1038 case ixgbe_mbox_api_20: 1039 case ixgbe_mbox_api_11: 1040 case ixgbe_mbox_api_12: 1041 case ixgbe_mbox_api_13: 1042 case ixgbe_mbox_api_14: 1043 break; 1044 default: 1045 return -1; 1046 } 1047 1048 /* only allow 1 Tx queue for bandwidth limiting */ 1049 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1050 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1051 1052 /* if TCs > 1 determine which TC belongs to default user priority */ 1053 if (num_tcs > 1) 1054 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 1055 1056 /* notify VF of need for VLAN tag stripping, and correct queue */ 1057 if (num_tcs) 1058 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 1059 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 1060 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 1061 else 1062 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 1063 1064 /* notify VF of default queue */ 1065 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 1066 1067 return 0; 1068 } 1069 1070 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 1071 { 1072 u32 i, j; 1073 u32 *out_buf = &msgbuf[1]; 1074 const u8 *reta = adapter->rss_indir_tbl; 1075 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); 1076 1077 /* Check if operation is permitted */ 1078 if (!adapter->vfinfo[vf].rss_query_enabled) 1079 return -EPERM; 1080 1081 /* verify the PF is supporting the correct API */ 1082 switch (adapter->vfinfo[vf].vf_api) { 1083 case ixgbe_mbox_api_14: 1084 case ixgbe_mbox_api_13: 1085 case ixgbe_mbox_api_12: 1086 break; 1087 default: 1088 return -EOPNOTSUPP; 1089 } 1090 1091 /* This mailbox command is supported (required) only for 82599 and x540 1092 * VFs which support up to 4 RSS queues. Therefore we will compress the 1093 * RETA by saving only 2 bits from each entry. This way we will be able 1094 * to transfer the whole RETA in a single mailbox operation. 1095 */ 1096 for (i = 0; i < reta_size / 16; i++) { 1097 out_buf[i] = 0; 1098 for (j = 0; j < 16; j++) 1099 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); 1100 } 1101 1102 return 0; 1103 } 1104 1105 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, 1106 u32 *msgbuf, u32 vf) 1107 { 1108 u32 *rss_key = &msgbuf[1]; 1109 1110 /* Check if the operation is permitted */ 1111 if (!adapter->vfinfo[vf].rss_query_enabled) 1112 return -EPERM; 1113 1114 /* verify the PF is supporting the correct API */ 1115 switch (adapter->vfinfo[vf].vf_api) { 1116 case ixgbe_mbox_api_14: 1117 case ixgbe_mbox_api_13: 1118 case ixgbe_mbox_api_12: 1119 break; 1120 default: 1121 return -EOPNOTSUPP; 1122 } 1123 1124 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE); 1125 1126 return 0; 1127 } 1128 1129 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter, 1130 u32 *msgbuf, u32 vf) 1131 { 1132 struct ixgbe_hw *hw = &adapter->hw; 1133 int xcast_mode = msgbuf[1]; 1134 u32 vmolr, fctrl, disable, enable; 1135 1136 /* verify the PF is supporting the correct APIs */ 1137 switch (adapter->vfinfo[vf].vf_api) { 1138 case ixgbe_mbox_api_12: 1139 /* promisc introduced in 1.3 version */ 1140 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) 1141 return -EOPNOTSUPP; 1142 fallthrough; 1143 case ixgbe_mbox_api_13: 1144 case ixgbe_mbox_api_14: 1145 break; 1146 default: 1147 return -EOPNOTSUPP; 1148 } 1149 1150 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI && 1151 !adapter->vfinfo[vf].trusted) { 1152 xcast_mode = IXGBEVF_XCAST_MODE_MULTI; 1153 } 1154 1155 if (adapter->vfinfo[vf].xcast_mode == xcast_mode) 1156 goto out; 1157 1158 switch (xcast_mode) { 1159 case IXGBEVF_XCAST_MODE_NONE: 1160 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1161 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1162 enable = 0; 1163 break; 1164 case IXGBEVF_XCAST_MODE_MULTI: 1165 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1166 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE; 1167 break; 1168 case IXGBEVF_XCAST_MODE_ALLMULTI: 1169 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1170 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; 1171 break; 1172 case IXGBEVF_XCAST_MODE_PROMISC: 1173 if (hw->mac.type <= ixgbe_mac_82599EB) 1174 return -EOPNOTSUPP; 1175 1176 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 1177 if (!(fctrl & IXGBE_FCTRL_UPE)) { 1178 /* VF promisc requires PF in promisc */ 1179 e_warn(drv, 1180 "Enabling VF promisc requires PF in promisc\n"); 1181 return -EPERM; 1182 } 1183 1184 disable = 0; 1185 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1186 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1187 break; 1188 default: 1189 return -EOPNOTSUPP; 1190 } 1191 1192 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 1193 vmolr &= ~disable; 1194 vmolr |= enable; 1195 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 1196 1197 adapter->vfinfo[vf].xcast_mode = xcast_mode; 1198 1199 out: 1200 msgbuf[1] = xcast_mode; 1201 1202 return 0; 1203 } 1204 1205 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1206 { 1207 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 1208 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 1209 struct ixgbe_hw *hw = &adapter->hw; 1210 s32 retval; 1211 1212 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 1213 1214 if (retval) { 1215 pr_err("Error receiving message from VF\n"); 1216 return retval; 1217 } 1218 1219 /* this is a message we already processed, do nothing */ 1220 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 1221 return 0; 1222 1223 /* flush the ack before we write any messages back */ 1224 IXGBE_WRITE_FLUSH(hw); 1225 1226 if (msgbuf[0] == IXGBE_VF_RESET) 1227 return ixgbe_vf_reset_msg(adapter, vf); 1228 1229 /* 1230 * until the vf completes a virtual function reset it should not be 1231 * allowed to start any configuration. 1232 */ 1233 if (!adapter->vfinfo[vf].clear_to_send) { 1234 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1235 ixgbe_write_mbx(hw, msgbuf, 1, vf); 1236 return 0; 1237 } 1238 1239 switch ((msgbuf[0] & 0xFFFF)) { 1240 case IXGBE_VF_SET_MAC_ADDR: 1241 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 1242 break; 1243 case IXGBE_VF_SET_MULTICAST: 1244 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 1245 break; 1246 case IXGBE_VF_SET_VLAN: 1247 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1248 break; 1249 case IXGBE_VF_SET_LPE: 1250 retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf); 1251 break; 1252 case IXGBE_VF_SET_MACVLAN: 1253 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1254 break; 1255 case IXGBE_VF_API_NEGOTIATE: 1256 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 1257 break; 1258 case IXGBE_VF_GET_QUEUES: 1259 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1260 break; 1261 case IXGBE_VF_GET_RETA: 1262 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); 1263 break; 1264 case IXGBE_VF_GET_RSS_KEY: 1265 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); 1266 break; 1267 case IXGBE_VF_UPDATE_XCAST_MODE: 1268 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf); 1269 break; 1270 case IXGBE_VF_IPSEC_ADD: 1271 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf); 1272 break; 1273 case IXGBE_VF_IPSEC_DEL: 1274 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf); 1275 break; 1276 default: 1277 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1278 retval = IXGBE_ERR_MBX; 1279 break; 1280 } 1281 1282 /* notify the VF of the results of what it sent us */ 1283 if (retval) 1284 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1285 else 1286 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1287 1288 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1289 1290 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1291 1292 return retval; 1293 } 1294 1295 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1296 { 1297 struct ixgbe_hw *hw = &adapter->hw; 1298 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1299 1300 /* if device isn't clear to send it shouldn't be reading either */ 1301 if (!adapter->vfinfo[vf].clear_to_send) 1302 ixgbe_write_mbx(hw, &msg, 1, vf); 1303 } 1304 1305 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1306 { 1307 struct ixgbe_hw *hw = &adapter->hw; 1308 u32 vf; 1309 1310 for (vf = 0; vf < adapter->num_vfs; vf++) { 1311 /* process any reset requests */ 1312 if (!ixgbe_check_for_rst(hw, vf)) 1313 ixgbe_vf_reset_event(adapter, vf); 1314 1315 /* process any messages pending */ 1316 if (!ixgbe_check_for_msg(hw, vf)) 1317 ixgbe_rcv_msg_from_vf(adapter, vf); 1318 1319 /* process any acks */ 1320 if (!ixgbe_check_for_ack(hw, vf)) 1321 ixgbe_rcv_ack_from_vf(adapter, vf); 1322 } 1323 } 1324 1325 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1326 { 1327 struct ixgbe_hw *hw = &adapter->hw; 1328 1329 /* disable transmit and receive for all vfs */ 1330 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1331 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1332 1333 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1334 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1335 } 1336 1337 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf) 1338 { 1339 struct ixgbe_hw *hw = &adapter->hw; 1340 u32 ping; 1341 1342 ping = IXGBE_PF_CONTROL_MSG; 1343 if (adapter->vfinfo[vf].clear_to_send) 1344 ping |= IXGBE_VT_MSGTYPE_CTS; 1345 ixgbe_write_mbx(hw, &ping, 1, vf); 1346 } 1347 1348 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1349 { 1350 struct ixgbe_hw *hw = &adapter->hw; 1351 u32 ping; 1352 int i; 1353 1354 for (i = 0 ; i < adapter->num_vfs; i++) { 1355 ping = IXGBE_PF_CONTROL_MSG; 1356 if (adapter->vfinfo[i].clear_to_send) 1357 ping |= IXGBE_VT_MSGTYPE_CTS; 1358 ixgbe_write_mbx(hw, &ping, 1, i); 1359 } 1360 } 1361 1362 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1363 { 1364 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1365 s32 retval; 1366 1367 if (vf >= adapter->num_vfs) 1368 return -EINVAL; 1369 1370 if (is_valid_ether_addr(mac)) { 1371 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", 1372 mac, vf); 1373 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective."); 1374 1375 retval = ixgbe_set_vf_mac(adapter, vf, mac); 1376 if (retval >= 0) { 1377 adapter->vfinfo[vf].pf_set_mac = true; 1378 1379 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1380 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n"); 1381 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n"); 1382 } 1383 } else { 1384 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n"); 1385 } 1386 } else if (is_zero_ether_addr(mac)) { 1387 unsigned char *vf_mac_addr = 1388 adapter->vfinfo[vf].vf_mac_addresses; 1389 1390 /* nothing to do */ 1391 if (is_zero_ether_addr(vf_mac_addr)) 1392 return 0; 1393 1394 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf); 1395 1396 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf); 1397 if (retval >= 0) { 1398 adapter->vfinfo[vf].pf_set_mac = false; 1399 memcpy(vf_mac_addr, mac, ETH_ALEN); 1400 } else { 1401 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n"); 1402 } 1403 } else { 1404 retval = -EINVAL; 1405 } 1406 1407 return retval; 1408 } 1409 1410 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1411 u16 vlan, u8 qos) 1412 { 1413 struct ixgbe_hw *hw = &adapter->hw; 1414 int err; 1415 1416 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1417 if (err) 1418 goto out; 1419 1420 /* Revoke tagless access via VLAN 0 */ 1421 ixgbe_set_vf_vlan(adapter, false, 0, vf); 1422 1423 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1424 ixgbe_set_vmolr(hw, vf, false); 1425 1426 /* enable hide vlan on X550 */ 1427 if (hw->mac.type >= ixgbe_mac_X550) 1428 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1429 IXGBE_QDE_HIDE_VLAN); 1430 1431 adapter->vfinfo[vf].pf_vlan = vlan; 1432 adapter->vfinfo[vf].pf_qos = qos; 1433 dev_info(&adapter->pdev->dev, 1434 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1435 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1436 dev_warn(&adapter->pdev->dev, 1437 "The VF VLAN has been set, but the PF device is not up.\n"); 1438 dev_warn(&adapter->pdev->dev, 1439 "Bring the PF device up before attempting to use the VF device.\n"); 1440 } 1441 1442 out: 1443 return err; 1444 } 1445 1446 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1447 { 1448 struct ixgbe_hw *hw = &adapter->hw; 1449 int err; 1450 1451 err = ixgbe_set_vf_vlan(adapter, false, 1452 adapter->vfinfo[vf].pf_vlan, vf); 1453 /* Restore tagless access via VLAN 0 */ 1454 ixgbe_set_vf_vlan(adapter, true, 0, vf); 1455 ixgbe_clear_vmvir(adapter, vf); 1456 ixgbe_set_vmolr(hw, vf, true); 1457 1458 /* disable hide VLAN on X550 */ 1459 if (hw->mac.type >= ixgbe_mac_X550) 1460 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1461 1462 adapter->vfinfo[vf].pf_vlan = 0; 1463 adapter->vfinfo[vf].pf_qos = 0; 1464 1465 return err; 1466 } 1467 1468 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, 1469 u8 qos, __be16 vlan_proto) 1470 { 1471 int err = 0; 1472 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1473 1474 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1475 return -EINVAL; 1476 if (vlan_proto != htons(ETH_P_8021Q)) 1477 return -EPROTONOSUPPORT; 1478 if (vlan || qos) { 1479 /* Check if there is already a port VLAN set, if so 1480 * we have to delete the old one first before we 1481 * can set the new one. The usage model had 1482 * previously assumed the user would delete the 1483 * old port VLAN before setting a new one but this 1484 * is not necessarily the case. 1485 */ 1486 if (adapter->vfinfo[vf].pf_vlan) 1487 err = ixgbe_disable_port_vlan(adapter, vf); 1488 if (err) 1489 goto out; 1490 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1491 } else { 1492 err = ixgbe_disable_port_vlan(adapter, vf); 1493 } 1494 1495 out: 1496 return err; 1497 } 1498 1499 int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1500 { 1501 switch (adapter->link_speed) { 1502 case IXGBE_LINK_SPEED_100_FULL: 1503 return 100; 1504 case IXGBE_LINK_SPEED_1GB_FULL: 1505 return 1000; 1506 case IXGBE_LINK_SPEED_10GB_FULL: 1507 return 10000; 1508 default: 1509 return 0; 1510 } 1511 } 1512 1513 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1514 { 1515 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1516 struct ixgbe_hw *hw = &adapter->hw; 1517 u32 bcnrc_val = 0; 1518 u16 queue, queues_per_pool; 1519 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1520 1521 if (tx_rate) { 1522 /* start with base link speed value */ 1523 bcnrc_val = adapter->vf_rate_link_speed; 1524 1525 /* Calculate the rate factor values to set */ 1526 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1527 bcnrc_val /= tx_rate; 1528 1529 /* clear everything but the rate factor */ 1530 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1531 IXGBE_RTTBCNRC_RF_DEC_MASK; 1532 1533 /* enable the rate scheduler */ 1534 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1535 } 1536 1537 /* 1538 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1539 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1540 * and 0x004 otherwise. 1541 */ 1542 switch (hw->mac.type) { 1543 case ixgbe_mac_82599EB: 1544 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1545 break; 1546 case ixgbe_mac_X540: 1547 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1548 break; 1549 default: 1550 break; 1551 } 1552 1553 /* determine how many queues per pool based on VMDq mask */ 1554 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1555 1556 /* write value for all Tx queues belonging to VF */ 1557 for (queue = 0; queue < queues_per_pool; queue++) { 1558 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1559 1560 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1561 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1562 } 1563 } 1564 1565 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1566 { 1567 int i; 1568 1569 /* VF Tx rate limit was not set */ 1570 if (!adapter->vf_rate_link_speed) 1571 return; 1572 1573 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1574 adapter->vf_rate_link_speed = 0; 1575 dev_info(&adapter->pdev->dev, 1576 "Link speed has been changed. VF Transmit rate is disabled\n"); 1577 } 1578 1579 for (i = 0; i < adapter->num_vfs; i++) { 1580 if (!adapter->vf_rate_link_speed) 1581 adapter->vfinfo[i].tx_rate = 0; 1582 1583 ixgbe_set_vf_rate_limit(adapter, i); 1584 } 1585 } 1586 1587 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1588 int max_tx_rate) 1589 { 1590 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1591 int link_speed; 1592 1593 /* verify VF is active */ 1594 if (vf >= adapter->num_vfs) 1595 return -EINVAL; 1596 1597 /* verify link is up */ 1598 if (!adapter->link_up) 1599 return -EINVAL; 1600 1601 /* verify we are linked at 10Gbps */ 1602 link_speed = ixgbe_link_mbps(adapter); 1603 if (link_speed != 10000) 1604 return -EINVAL; 1605 1606 if (min_tx_rate) 1607 return -EINVAL; 1608 1609 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1610 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1611 return -EINVAL; 1612 1613 /* store values */ 1614 adapter->vf_rate_link_speed = link_speed; 1615 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1616 1617 /* update hardware configuration */ 1618 ixgbe_set_vf_rate_limit(adapter, vf); 1619 1620 return 0; 1621 } 1622 1623 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1624 { 1625 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1626 struct ixgbe_hw *hw = &adapter->hw; 1627 1628 if (vf >= adapter->num_vfs) 1629 return -EINVAL; 1630 1631 adapter->vfinfo[vf].spoofchk_enabled = setting; 1632 1633 /* configure MAC spoofing */ 1634 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf); 1635 1636 /* configure VLAN spoofing */ 1637 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf); 1638 1639 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be 1640 * calling set_ethertype_anti_spoofing for each VF in loop below 1641 */ 1642 if (hw->mac.ops.set_ethertype_anti_spoofing) { 1643 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP), 1644 (IXGBE_ETQF_FILTER_EN | 1645 IXGBE_ETQF_TX_ANTISPOOF | 1646 ETH_P_LLDP)); 1647 1648 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC), 1649 (IXGBE_ETQF_FILTER_EN | 1650 IXGBE_ETQF_TX_ANTISPOOF | 1651 ETH_P_PAUSE)); 1652 1653 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf); 1654 } 1655 1656 return 0; 1657 } 1658 1659 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, 1660 bool setting) 1661 { 1662 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1663 1664 /* This operation is currently supported only for 82599 and x540 1665 * devices. 1666 */ 1667 if (adapter->hw.mac.type < ixgbe_mac_82599EB || 1668 adapter->hw.mac.type >= ixgbe_mac_X550) 1669 return -EOPNOTSUPP; 1670 1671 if (vf >= adapter->num_vfs) 1672 return -EINVAL; 1673 1674 adapter->vfinfo[vf].rss_query_enabled = setting; 1675 1676 return 0; 1677 } 1678 1679 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) 1680 { 1681 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1682 1683 if (vf >= adapter->num_vfs) 1684 return -EINVAL; 1685 1686 /* nothing to do */ 1687 if (adapter->vfinfo[vf].trusted == setting) 1688 return 0; 1689 1690 adapter->vfinfo[vf].trusted = setting; 1691 1692 /* reset VF to reconfigure features */ 1693 adapter->vfinfo[vf].clear_to_send = false; 1694 ixgbe_ping_vf(adapter, vf); 1695 1696 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not "); 1697 1698 return 0; 1699 } 1700 1701 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1702 int vf, struct ifla_vf_info *ivi) 1703 { 1704 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1705 if (vf >= adapter->num_vfs) 1706 return -EINVAL; 1707 ivi->vf = vf; 1708 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1709 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1710 ivi->min_tx_rate = 0; 1711 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1712 ivi->qos = adapter->vfinfo[vf].pf_qos; 1713 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1714 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; 1715 ivi->trusted = adapter->vfinfo[vf].trusted; 1716 return 0; 1717 } 1718