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 s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 471 { 472 struct ixgbe_hw *hw = &adapter->hw; 473 int max_frame = msgbuf[1]; 474 u32 max_frs; 475 476 /* 477 * For 82599EB we have to keep all PFs and VFs operating with 478 * the same max_frame value in order to avoid sending an oversize 479 * frame to a VF. In order to guarantee this is handled correctly 480 * for all cases we have several special exceptions to take into 481 * account before we can enable the VF for receive 482 */ 483 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 484 struct net_device *dev = adapter->netdev; 485 int pf_max_frame = dev->mtu + ETH_HLEN; 486 u32 reg_offset, vf_shift, vfre; 487 s32 err = 0; 488 489 #ifdef CONFIG_FCOE 490 if (dev->features & NETIF_F_FCOE_MTU) 491 pf_max_frame = max_t(int, pf_max_frame, 492 IXGBE_FCOE_JUMBO_FRAME_SIZE); 493 494 #endif /* CONFIG_FCOE */ 495 switch (adapter->vfinfo[vf].vf_api) { 496 case ixgbe_mbox_api_11: 497 case ixgbe_mbox_api_12: 498 case ixgbe_mbox_api_13: 499 case ixgbe_mbox_api_14: 500 /* Version 1.1 supports jumbo frames on VFs if PF has 501 * jumbo frames enabled which means legacy VFs are 502 * disabled 503 */ 504 if (pf_max_frame > ETH_FRAME_LEN) 505 break; 506 fallthrough; 507 default: 508 /* If the PF or VF are running w/ jumbo frames enabled 509 * we need to shut down the VF Rx path as we cannot 510 * support jumbo frames on legacy VFs 511 */ 512 if ((pf_max_frame > ETH_FRAME_LEN) || 513 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 514 err = -EINVAL; 515 break; 516 } 517 518 /* determine VF receive enable location */ 519 vf_shift = vf % 32; 520 reg_offset = vf / 32; 521 522 /* enable or disable receive depending on error */ 523 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 524 if (err) 525 vfre &= ~BIT(vf_shift); 526 else 527 vfre |= BIT(vf_shift); 528 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 529 530 if (err) { 531 e_err(drv, "VF max_frame %d out of range\n", max_frame); 532 return err; 533 } 534 } 535 536 /* MTU < 68 is an error and causes problems on some kernels */ 537 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 538 e_err(drv, "VF max_frame %d out of range\n", max_frame); 539 return -EINVAL; 540 } 541 542 /* pull current max frame size from hardware */ 543 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 544 max_frs &= IXGBE_MHADD_MFS_MASK; 545 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 546 547 if (max_frs < max_frame) { 548 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 549 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 550 } 551 552 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 553 554 return 0; 555 } 556 557 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 558 { 559 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 560 vmolr |= IXGBE_VMOLR_BAM; 561 if (aupe) 562 vmolr |= IXGBE_VMOLR_AUPE; 563 else 564 vmolr &= ~IXGBE_VMOLR_AUPE; 565 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 566 } 567 568 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 569 { 570 struct ixgbe_hw *hw = &adapter->hw; 571 572 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 573 } 574 575 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf) 576 { 577 struct ixgbe_hw *hw = &adapter->hw; 578 u32 vlvfb_mask, pool_mask, i; 579 580 /* create mask for VF and other pools */ 581 pool_mask = ~BIT(VMDQ_P(0) % 32); 582 vlvfb_mask = BIT(vf % 32); 583 584 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */ 585 for (i = IXGBE_VLVF_ENTRIES; i--;) { 586 u32 bits[2], vlvfb, vid, vfta, vlvf; 587 u32 word = i * 2 + vf / 32; 588 u32 mask; 589 590 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 591 592 /* if our bit isn't set we can skip it */ 593 if (!(vlvfb & vlvfb_mask)) 594 continue; 595 596 /* clear our bit from vlvfb */ 597 vlvfb ^= vlvfb_mask; 598 599 /* create 64b mask to chedk to see if we should clear VLVF */ 600 bits[word % 2] = vlvfb; 601 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1)); 602 603 /* if other pools are present, just remove ourselves */ 604 if (bits[(VMDQ_P(0) / 32) ^ 1] || 605 (bits[VMDQ_P(0) / 32] & pool_mask)) 606 goto update_vlvfb; 607 608 /* if PF is present, leave VFTA */ 609 if (bits[0] || bits[1]) 610 goto update_vlvf; 611 612 /* if we cannot determine VLAN just remove ourselves */ 613 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 614 if (!vlvf) 615 goto update_vlvfb; 616 617 vid = vlvf & VLAN_VID_MASK; 618 mask = BIT(vid % 32); 619 620 /* clear bit from VFTA */ 621 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32)); 622 if (vfta & mask) 623 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask); 624 update_vlvf: 625 /* clear POOL selection enable */ 626 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0); 627 628 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 629 vlvfb = 0; 630 update_vlvfb: 631 /* clear pool bits */ 632 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb); 633 } 634 } 635 636 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 637 int vf, int index, unsigned char *mac_addr) 638 { 639 struct vf_macvlans *entry; 640 struct list_head *pos; 641 int retval = 0; 642 643 if (index <= 1) { 644 list_for_each(pos, &adapter->vf_mvs.l) { 645 entry = list_entry(pos, struct vf_macvlans, l); 646 if (entry->vf == vf) { 647 entry->vf = -1; 648 entry->free = true; 649 entry->is_macvlan = false; 650 ixgbe_del_mac_filter(adapter, 651 entry->vf_macvlan, vf); 652 } 653 } 654 } 655 656 /* 657 * If index was zero then we were asked to clear the uc list 658 * for the VF. We're done. 659 */ 660 if (!index) 661 return 0; 662 663 entry = NULL; 664 665 list_for_each(pos, &adapter->vf_mvs.l) { 666 entry = list_entry(pos, struct vf_macvlans, l); 667 if (entry->free) 668 break; 669 } 670 671 /* 672 * If we traversed the entire list and didn't find a free entry 673 * then we're out of space on the RAR table. Also entry may 674 * be NULL because the original memory allocation for the list 675 * failed, which is not fatal but does mean we can't support 676 * VF requests for MACVLAN because we couldn't allocate 677 * memory for the list management required. 678 */ 679 if (!entry || !entry->free) 680 return -ENOSPC; 681 682 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 683 if (retval < 0) 684 return retval; 685 686 entry->free = false; 687 entry->is_macvlan = true; 688 entry->vf = vf; 689 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 690 691 return 0; 692 } 693 694 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 695 { 696 struct ixgbe_hw *hw = &adapter->hw; 697 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 698 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 699 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 700 u8 num_tcs = adapter->hw_tcs; 701 u32 reg_val; 702 u32 queue; 703 704 /* remove VLAN filters beloning to this VF */ 705 ixgbe_clear_vf_vlans(adapter, vf); 706 707 /* add back PF assigned VLAN or VLAN 0 */ 708 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 709 710 /* reset offloads to defaults */ 711 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 712 713 /* set outgoing tags for VFs */ 714 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 715 ixgbe_clear_vmvir(adapter, vf); 716 } else { 717 if (vfinfo->pf_qos || !num_tcs) 718 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 719 vfinfo->pf_qos, vf); 720 else 721 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 722 adapter->default_up, vf); 723 724 if (vfinfo->spoofchk_enabled) { 725 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 726 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf); 727 } 728 } 729 730 /* reset multicast table array for vf */ 731 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 732 733 /* clear any ipsec table info */ 734 ixgbe_ipsec_vf_clear(adapter, vf); 735 736 /* Flush and reset the mta with the new values */ 737 ixgbe_set_rx_mode(adapter->netdev); 738 739 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 740 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL); 741 742 /* reset VF api back to unknown */ 743 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 744 745 /* Restart each queue for given VF */ 746 for (queue = 0; queue < q_per_pool; queue++) { 747 unsigned int reg_idx = (vf * q_per_pool) + queue; 748 749 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx)); 750 751 /* Re-enabling only configured queues */ 752 if (reg_val) { 753 reg_val |= IXGBE_TXDCTL_ENABLE; 754 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val); 755 reg_val &= ~IXGBE_TXDCTL_ENABLE; 756 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val); 757 } 758 } 759 760 IXGBE_WRITE_FLUSH(hw); 761 } 762 763 static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf) 764 { 765 struct ixgbe_hw *hw = &adapter->hw; 766 u32 word; 767 768 /* Clear VF's mailbox memory */ 769 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++) 770 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0); 771 772 IXGBE_WRITE_FLUSH(hw); 773 } 774 775 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 776 int vf, unsigned char *mac_addr) 777 { 778 s32 retval; 779 780 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 781 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 782 if (retval >= 0) 783 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 784 ETH_ALEN); 785 else 786 eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses); 787 788 return retval; 789 } 790 791 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 792 { 793 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 794 unsigned int vfn = (event_mask & 0x3f); 795 796 bool enable = ((event_mask & 0x10000000U) != 0); 797 798 if (enable) 799 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 800 801 return 0; 802 } 803 804 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 805 u32 qde) 806 { 807 struct ixgbe_hw *hw = &adapter->hw; 808 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 809 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 810 int i; 811 812 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 813 u32 reg; 814 815 /* flush previous write */ 816 IXGBE_WRITE_FLUSH(hw); 817 818 /* indicate to hardware that we want to set drop enable */ 819 reg = IXGBE_QDE_WRITE | qde; 820 reg |= i << IXGBE_QDE_IDX_SHIFT; 821 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 822 } 823 } 824 825 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 826 { 827 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 828 struct ixgbe_hw *hw = &adapter->hw; 829 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 830 u32 reg, reg_offset, vf_shift; 831 u32 msgbuf[4] = {0, 0, 0, 0}; 832 u8 *addr = (u8 *)(&msgbuf[1]); 833 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 834 int i; 835 836 e_info(probe, "VF Reset msg received from vf %d\n", vf); 837 838 /* reset the filters for the device */ 839 ixgbe_vf_reset_event(adapter, vf); 840 841 ixgbe_vf_clear_mbx(adapter, vf); 842 843 /* set vf mac address */ 844 if (!is_zero_ether_addr(vf_mac)) 845 ixgbe_set_vf_mac(adapter, vf, vf_mac); 846 847 vf_shift = vf % 32; 848 reg_offset = vf / 32; 849 850 /* enable transmit for vf */ 851 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 852 reg |= BIT(vf_shift); 853 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 854 855 /* force drop enable for all VF Rx queues */ 856 reg = IXGBE_QDE_ENABLE; 857 if (adapter->vfinfo[vf].pf_vlan) 858 reg |= IXGBE_QDE_HIDE_VLAN; 859 860 ixgbe_write_qde(adapter, vf, reg); 861 862 /* enable receive for vf */ 863 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 864 reg |= BIT(vf_shift); 865 /* 866 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 867 * For more info take a look at ixgbe_set_vf_lpe 868 */ 869 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 870 struct net_device *dev = adapter->netdev; 871 int pf_max_frame = dev->mtu + ETH_HLEN; 872 873 #ifdef CONFIG_FCOE 874 if (dev->features & NETIF_F_FCOE_MTU) 875 pf_max_frame = max_t(int, pf_max_frame, 876 IXGBE_FCOE_JUMBO_FRAME_SIZE); 877 878 #endif /* CONFIG_FCOE */ 879 if (pf_max_frame > ETH_FRAME_LEN) 880 reg &= ~BIT(vf_shift); 881 } 882 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 883 884 /* enable VF mailbox for further messages */ 885 adapter->vfinfo[vf].clear_to_send = true; 886 887 /* Enable counting of spoofed packets in the SSVPC register */ 888 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 889 reg |= BIT(vf_shift); 890 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 891 892 /* 893 * Reset the VFs TDWBAL and TDWBAH registers 894 * which are not cleared by an FLR 895 */ 896 for (i = 0; i < q_per_pool; i++) { 897 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 898 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 899 } 900 901 /* reply to reset with ack and vf mac address */ 902 msgbuf[0] = IXGBE_VF_RESET; 903 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) { 904 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 905 memcpy(addr, vf_mac, ETH_ALEN); 906 } else { 907 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 908 } 909 910 /* 911 * Piggyback the multicast filter type so VF can compute the 912 * correct vectors 913 */ 914 msgbuf[3] = hw->mac.mc_filter_type; 915 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 916 917 return 0; 918 } 919 920 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 921 u32 *msgbuf, u32 vf) 922 { 923 u8 *new_mac = ((u8 *)(&msgbuf[1])); 924 925 if (!is_valid_ether_addr(new_mac)) { 926 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 927 return -1; 928 } 929 930 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 931 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 932 e_warn(drv, 933 "VF %d attempted to override administratively set MAC address\n" 934 "Reload the VF driver to resume operations\n", 935 vf); 936 return -1; 937 } 938 939 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 940 } 941 942 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 943 u32 *msgbuf, u32 vf) 944 { 945 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 946 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 947 u8 tcs = adapter->hw_tcs; 948 949 if (adapter->vfinfo[vf].pf_vlan || tcs) { 950 e_warn(drv, 951 "VF %d attempted to override administratively set VLAN configuration\n" 952 "Reload the VF driver to resume operations\n", 953 vf); 954 return -1; 955 } 956 957 /* VLAN 0 is a special case, don't allow it to be removed */ 958 if (!vid && !add) 959 return 0; 960 961 return ixgbe_set_vf_vlan(adapter, add, vid, vf); 962 } 963 964 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 965 u32 *msgbuf, u32 vf) 966 { 967 u8 *new_mac = ((u8 *)(&msgbuf[1])); 968 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 969 IXGBE_VT_MSGINFO_SHIFT; 970 int err; 971 972 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 973 index > 0) { 974 e_warn(drv, 975 "VF %d requested MACVLAN filter but is administratively denied\n", 976 vf); 977 return -1; 978 } 979 980 /* An non-zero index indicates the VF is setting a filter */ 981 if (index) { 982 if (!is_valid_ether_addr(new_mac)) { 983 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 984 return -1; 985 } 986 987 /* 988 * If the VF is allowed to set MAC filters then turn off 989 * anti-spoofing to avoid false positives. 990 */ 991 if (adapter->vfinfo[vf].spoofchk_enabled) { 992 struct ixgbe_hw *hw = &adapter->hw; 993 994 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf); 995 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 996 } 997 } 998 999 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 1000 if (err == -ENOSPC) 1001 e_warn(drv, 1002 "VF %d has requested a MACVLAN filter but there is no space for it\n", 1003 vf); 1004 1005 return err < 0; 1006 } 1007 1008 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 1009 u32 *msgbuf, u32 vf) 1010 { 1011 int api = msgbuf[1]; 1012 1013 switch (api) { 1014 case ixgbe_mbox_api_10: 1015 case ixgbe_mbox_api_11: 1016 case ixgbe_mbox_api_12: 1017 case ixgbe_mbox_api_13: 1018 case ixgbe_mbox_api_14: 1019 adapter->vfinfo[vf].vf_api = api; 1020 return 0; 1021 default: 1022 break; 1023 } 1024 1025 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 1026 1027 return -1; 1028 } 1029 1030 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 1031 u32 *msgbuf, u32 vf) 1032 { 1033 struct net_device *dev = adapter->netdev; 1034 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1035 unsigned int default_tc = 0; 1036 u8 num_tcs = adapter->hw_tcs; 1037 1038 /* verify the PF is supporting the correct APIs */ 1039 switch (adapter->vfinfo[vf].vf_api) { 1040 case ixgbe_mbox_api_20: 1041 case ixgbe_mbox_api_11: 1042 case ixgbe_mbox_api_12: 1043 case ixgbe_mbox_api_13: 1044 case ixgbe_mbox_api_14: 1045 break; 1046 default: 1047 return -1; 1048 } 1049 1050 /* only allow 1 Tx queue for bandwidth limiting */ 1051 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1052 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1053 1054 /* if TCs > 1 determine which TC belongs to default user priority */ 1055 if (num_tcs > 1) 1056 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 1057 1058 /* notify VF of need for VLAN tag stripping, and correct queue */ 1059 if (num_tcs) 1060 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 1061 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 1062 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 1063 else 1064 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 1065 1066 /* notify VF of default queue */ 1067 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 1068 1069 return 0; 1070 } 1071 1072 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 1073 { 1074 u32 i, j; 1075 u32 *out_buf = &msgbuf[1]; 1076 const u8 *reta = adapter->rss_indir_tbl; 1077 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); 1078 1079 /* Check if operation is permitted */ 1080 if (!adapter->vfinfo[vf].rss_query_enabled) 1081 return -EPERM; 1082 1083 /* verify the PF is supporting the correct API */ 1084 switch (adapter->vfinfo[vf].vf_api) { 1085 case ixgbe_mbox_api_14: 1086 case ixgbe_mbox_api_13: 1087 case ixgbe_mbox_api_12: 1088 break; 1089 default: 1090 return -EOPNOTSUPP; 1091 } 1092 1093 /* This mailbox command is supported (required) only for 82599 and x540 1094 * VFs which support up to 4 RSS queues. Therefore we will compress the 1095 * RETA by saving only 2 bits from each entry. This way we will be able 1096 * to transfer the whole RETA in a single mailbox operation. 1097 */ 1098 for (i = 0; i < reta_size / 16; i++) { 1099 out_buf[i] = 0; 1100 for (j = 0; j < 16; j++) 1101 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); 1102 } 1103 1104 return 0; 1105 } 1106 1107 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, 1108 u32 *msgbuf, u32 vf) 1109 { 1110 u32 *rss_key = &msgbuf[1]; 1111 1112 /* Check if the operation is permitted */ 1113 if (!adapter->vfinfo[vf].rss_query_enabled) 1114 return -EPERM; 1115 1116 /* verify the PF is supporting the correct API */ 1117 switch (adapter->vfinfo[vf].vf_api) { 1118 case ixgbe_mbox_api_14: 1119 case ixgbe_mbox_api_13: 1120 case ixgbe_mbox_api_12: 1121 break; 1122 default: 1123 return -EOPNOTSUPP; 1124 } 1125 1126 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE); 1127 1128 return 0; 1129 } 1130 1131 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter, 1132 u32 *msgbuf, u32 vf) 1133 { 1134 struct ixgbe_hw *hw = &adapter->hw; 1135 int xcast_mode = msgbuf[1]; 1136 u32 vmolr, fctrl, disable, enable; 1137 1138 /* verify the PF is supporting the correct APIs */ 1139 switch (adapter->vfinfo[vf].vf_api) { 1140 case ixgbe_mbox_api_12: 1141 /* promisc introduced in 1.3 version */ 1142 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) 1143 return -EOPNOTSUPP; 1144 fallthrough; 1145 case ixgbe_mbox_api_13: 1146 case ixgbe_mbox_api_14: 1147 break; 1148 default: 1149 return -EOPNOTSUPP; 1150 } 1151 1152 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI && 1153 !adapter->vfinfo[vf].trusted) { 1154 xcast_mode = IXGBEVF_XCAST_MODE_MULTI; 1155 } 1156 1157 if (adapter->vfinfo[vf].xcast_mode == xcast_mode) 1158 goto out; 1159 1160 switch (xcast_mode) { 1161 case IXGBEVF_XCAST_MODE_NONE: 1162 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1163 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1164 enable = 0; 1165 break; 1166 case IXGBEVF_XCAST_MODE_MULTI: 1167 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1168 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE; 1169 break; 1170 case IXGBEVF_XCAST_MODE_ALLMULTI: 1171 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1172 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; 1173 break; 1174 case IXGBEVF_XCAST_MODE_PROMISC: 1175 if (hw->mac.type <= ixgbe_mac_82599EB) 1176 return -EOPNOTSUPP; 1177 1178 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 1179 if (!(fctrl & IXGBE_FCTRL_UPE)) { 1180 /* VF promisc requires PF in promisc */ 1181 e_warn(drv, 1182 "Enabling VF promisc requires PF in promisc\n"); 1183 return -EPERM; 1184 } 1185 1186 disable = 0; 1187 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1188 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1189 break; 1190 default: 1191 return -EOPNOTSUPP; 1192 } 1193 1194 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 1195 vmolr &= ~disable; 1196 vmolr |= enable; 1197 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 1198 1199 adapter->vfinfo[vf].xcast_mode = xcast_mode; 1200 1201 out: 1202 msgbuf[1] = xcast_mode; 1203 1204 return 0; 1205 } 1206 1207 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1208 { 1209 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 1210 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 1211 struct ixgbe_hw *hw = &adapter->hw; 1212 s32 retval; 1213 1214 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 1215 1216 if (retval) { 1217 pr_err("Error receiving message from VF\n"); 1218 return retval; 1219 } 1220 1221 /* this is a message we already processed, do nothing */ 1222 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 1223 return 0; 1224 1225 /* flush the ack before we write any messages back */ 1226 IXGBE_WRITE_FLUSH(hw); 1227 1228 if (msgbuf[0] == IXGBE_VF_RESET) 1229 return ixgbe_vf_reset_msg(adapter, vf); 1230 1231 /* 1232 * until the vf completes a virtual function reset it should not be 1233 * allowed to start any configuration. 1234 */ 1235 if (!adapter->vfinfo[vf].clear_to_send) { 1236 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1237 ixgbe_write_mbx(hw, msgbuf, 1, vf); 1238 return 0; 1239 } 1240 1241 switch ((msgbuf[0] & 0xFFFF)) { 1242 case IXGBE_VF_SET_MAC_ADDR: 1243 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 1244 break; 1245 case IXGBE_VF_SET_MULTICAST: 1246 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 1247 break; 1248 case IXGBE_VF_SET_VLAN: 1249 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1250 break; 1251 case IXGBE_VF_SET_LPE: 1252 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 1253 break; 1254 case IXGBE_VF_SET_MACVLAN: 1255 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1256 break; 1257 case IXGBE_VF_API_NEGOTIATE: 1258 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 1259 break; 1260 case IXGBE_VF_GET_QUEUES: 1261 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1262 break; 1263 case IXGBE_VF_GET_RETA: 1264 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); 1265 break; 1266 case IXGBE_VF_GET_RSS_KEY: 1267 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); 1268 break; 1269 case IXGBE_VF_UPDATE_XCAST_MODE: 1270 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf); 1271 break; 1272 case IXGBE_VF_IPSEC_ADD: 1273 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf); 1274 break; 1275 case IXGBE_VF_IPSEC_DEL: 1276 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf); 1277 break; 1278 default: 1279 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1280 retval = IXGBE_ERR_MBX; 1281 break; 1282 } 1283 1284 /* notify the VF of the results of what it sent us */ 1285 if (retval) 1286 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1287 else 1288 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1289 1290 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1291 1292 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1293 1294 return retval; 1295 } 1296 1297 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1298 { 1299 struct ixgbe_hw *hw = &adapter->hw; 1300 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1301 1302 /* if device isn't clear to send it shouldn't be reading either */ 1303 if (!adapter->vfinfo[vf].clear_to_send) 1304 ixgbe_write_mbx(hw, &msg, 1, vf); 1305 } 1306 1307 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1308 { 1309 struct ixgbe_hw *hw = &adapter->hw; 1310 u32 vf; 1311 1312 for (vf = 0; vf < adapter->num_vfs; vf++) { 1313 /* process any reset requests */ 1314 if (!ixgbe_check_for_rst(hw, vf)) 1315 ixgbe_vf_reset_event(adapter, vf); 1316 1317 /* process any messages pending */ 1318 if (!ixgbe_check_for_msg(hw, vf)) 1319 ixgbe_rcv_msg_from_vf(adapter, vf); 1320 1321 /* process any acks */ 1322 if (!ixgbe_check_for_ack(hw, vf)) 1323 ixgbe_rcv_ack_from_vf(adapter, vf); 1324 } 1325 } 1326 1327 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1328 { 1329 struct ixgbe_hw *hw = &adapter->hw; 1330 1331 /* disable transmit and receive for all vfs */ 1332 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1333 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1334 1335 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1336 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1337 } 1338 1339 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf) 1340 { 1341 struct ixgbe_hw *hw = &adapter->hw; 1342 u32 ping; 1343 1344 ping = IXGBE_PF_CONTROL_MSG; 1345 if (adapter->vfinfo[vf].clear_to_send) 1346 ping |= IXGBE_VT_MSGTYPE_CTS; 1347 ixgbe_write_mbx(hw, &ping, 1, vf); 1348 } 1349 1350 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1351 { 1352 struct ixgbe_hw *hw = &adapter->hw; 1353 u32 ping; 1354 int i; 1355 1356 for (i = 0 ; i < adapter->num_vfs; i++) { 1357 ping = IXGBE_PF_CONTROL_MSG; 1358 if (adapter->vfinfo[i].clear_to_send) 1359 ping |= IXGBE_VT_MSGTYPE_CTS; 1360 ixgbe_write_mbx(hw, &ping, 1, i); 1361 } 1362 } 1363 1364 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1365 { 1366 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1367 s32 retval; 1368 1369 if (vf >= adapter->num_vfs) 1370 return -EINVAL; 1371 1372 if (is_valid_ether_addr(mac)) { 1373 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", 1374 mac, vf); 1375 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective."); 1376 1377 retval = ixgbe_set_vf_mac(adapter, vf, mac); 1378 if (retval >= 0) { 1379 adapter->vfinfo[vf].pf_set_mac = true; 1380 1381 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1382 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n"); 1383 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n"); 1384 } 1385 } else { 1386 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n"); 1387 } 1388 } else if (is_zero_ether_addr(mac)) { 1389 unsigned char *vf_mac_addr = 1390 adapter->vfinfo[vf].vf_mac_addresses; 1391 1392 /* nothing to do */ 1393 if (is_zero_ether_addr(vf_mac_addr)) 1394 return 0; 1395 1396 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf); 1397 1398 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf); 1399 if (retval >= 0) { 1400 adapter->vfinfo[vf].pf_set_mac = false; 1401 memcpy(vf_mac_addr, mac, ETH_ALEN); 1402 } else { 1403 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n"); 1404 } 1405 } else { 1406 retval = -EINVAL; 1407 } 1408 1409 return retval; 1410 } 1411 1412 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1413 u16 vlan, u8 qos) 1414 { 1415 struct ixgbe_hw *hw = &adapter->hw; 1416 int err; 1417 1418 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1419 if (err) 1420 goto out; 1421 1422 /* Revoke tagless access via VLAN 0 */ 1423 ixgbe_set_vf_vlan(adapter, false, 0, vf); 1424 1425 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1426 ixgbe_set_vmolr(hw, vf, false); 1427 1428 /* enable hide vlan on X550 */ 1429 if (hw->mac.type >= ixgbe_mac_X550) 1430 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1431 IXGBE_QDE_HIDE_VLAN); 1432 1433 adapter->vfinfo[vf].pf_vlan = vlan; 1434 adapter->vfinfo[vf].pf_qos = qos; 1435 dev_info(&adapter->pdev->dev, 1436 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1437 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1438 dev_warn(&adapter->pdev->dev, 1439 "The VF VLAN has been set, but the PF device is not up.\n"); 1440 dev_warn(&adapter->pdev->dev, 1441 "Bring the PF device up before attempting to use the VF device.\n"); 1442 } 1443 1444 out: 1445 return err; 1446 } 1447 1448 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1449 { 1450 struct ixgbe_hw *hw = &adapter->hw; 1451 int err; 1452 1453 err = ixgbe_set_vf_vlan(adapter, false, 1454 adapter->vfinfo[vf].pf_vlan, vf); 1455 /* Restore tagless access via VLAN 0 */ 1456 ixgbe_set_vf_vlan(adapter, true, 0, vf); 1457 ixgbe_clear_vmvir(adapter, vf); 1458 ixgbe_set_vmolr(hw, vf, true); 1459 1460 /* disable hide VLAN on X550 */ 1461 if (hw->mac.type >= ixgbe_mac_X550) 1462 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1463 1464 adapter->vfinfo[vf].pf_vlan = 0; 1465 adapter->vfinfo[vf].pf_qos = 0; 1466 1467 return err; 1468 } 1469 1470 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, 1471 u8 qos, __be16 vlan_proto) 1472 { 1473 int err = 0; 1474 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1475 1476 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1477 return -EINVAL; 1478 if (vlan_proto != htons(ETH_P_8021Q)) 1479 return -EPROTONOSUPPORT; 1480 if (vlan || qos) { 1481 /* Check if there is already a port VLAN set, if so 1482 * we have to delete the old one first before we 1483 * can set the new one. The usage model had 1484 * previously assumed the user would delete the 1485 * old port VLAN before setting a new one but this 1486 * is not necessarily the case. 1487 */ 1488 if (adapter->vfinfo[vf].pf_vlan) 1489 err = ixgbe_disable_port_vlan(adapter, vf); 1490 if (err) 1491 goto out; 1492 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1493 } else { 1494 err = ixgbe_disable_port_vlan(adapter, vf); 1495 } 1496 1497 out: 1498 return err; 1499 } 1500 1501 int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1502 { 1503 switch (adapter->link_speed) { 1504 case IXGBE_LINK_SPEED_100_FULL: 1505 return 100; 1506 case IXGBE_LINK_SPEED_1GB_FULL: 1507 return 1000; 1508 case IXGBE_LINK_SPEED_10GB_FULL: 1509 return 10000; 1510 default: 1511 return 0; 1512 } 1513 } 1514 1515 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1516 { 1517 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1518 struct ixgbe_hw *hw = &adapter->hw; 1519 u32 bcnrc_val = 0; 1520 u16 queue, queues_per_pool; 1521 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1522 1523 if (tx_rate) { 1524 /* start with base link speed value */ 1525 bcnrc_val = adapter->vf_rate_link_speed; 1526 1527 /* Calculate the rate factor values to set */ 1528 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1529 bcnrc_val /= tx_rate; 1530 1531 /* clear everything but the rate factor */ 1532 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1533 IXGBE_RTTBCNRC_RF_DEC_MASK; 1534 1535 /* enable the rate scheduler */ 1536 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1537 } 1538 1539 /* 1540 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1541 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1542 * and 0x004 otherwise. 1543 */ 1544 switch (hw->mac.type) { 1545 case ixgbe_mac_82599EB: 1546 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1547 break; 1548 case ixgbe_mac_X540: 1549 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1550 break; 1551 default: 1552 break; 1553 } 1554 1555 /* determine how many queues per pool based on VMDq mask */ 1556 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1557 1558 /* write value for all Tx queues belonging to VF */ 1559 for (queue = 0; queue < queues_per_pool; queue++) { 1560 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1561 1562 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1563 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1564 } 1565 } 1566 1567 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1568 { 1569 int i; 1570 1571 /* VF Tx rate limit was not set */ 1572 if (!adapter->vf_rate_link_speed) 1573 return; 1574 1575 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1576 adapter->vf_rate_link_speed = 0; 1577 dev_info(&adapter->pdev->dev, 1578 "Link speed has been changed. VF Transmit rate is disabled\n"); 1579 } 1580 1581 for (i = 0; i < adapter->num_vfs; i++) { 1582 if (!adapter->vf_rate_link_speed) 1583 adapter->vfinfo[i].tx_rate = 0; 1584 1585 ixgbe_set_vf_rate_limit(adapter, i); 1586 } 1587 } 1588 1589 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1590 int max_tx_rate) 1591 { 1592 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1593 int link_speed; 1594 1595 /* verify VF is active */ 1596 if (vf >= adapter->num_vfs) 1597 return -EINVAL; 1598 1599 /* verify link is up */ 1600 if (!adapter->link_up) 1601 return -EINVAL; 1602 1603 /* verify we are linked at 10Gbps */ 1604 link_speed = ixgbe_link_mbps(adapter); 1605 if (link_speed != 10000) 1606 return -EINVAL; 1607 1608 if (min_tx_rate) 1609 return -EINVAL; 1610 1611 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1612 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1613 return -EINVAL; 1614 1615 /* store values */ 1616 adapter->vf_rate_link_speed = link_speed; 1617 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1618 1619 /* update hardware configuration */ 1620 ixgbe_set_vf_rate_limit(adapter, vf); 1621 1622 return 0; 1623 } 1624 1625 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1626 { 1627 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1628 struct ixgbe_hw *hw = &adapter->hw; 1629 1630 if (vf >= adapter->num_vfs) 1631 return -EINVAL; 1632 1633 adapter->vfinfo[vf].spoofchk_enabled = setting; 1634 1635 /* configure MAC spoofing */ 1636 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf); 1637 1638 /* configure VLAN spoofing */ 1639 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf); 1640 1641 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be 1642 * calling set_ethertype_anti_spoofing for each VF in loop below 1643 */ 1644 if (hw->mac.ops.set_ethertype_anti_spoofing) { 1645 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP), 1646 (IXGBE_ETQF_FILTER_EN | 1647 IXGBE_ETQF_TX_ANTISPOOF | 1648 ETH_P_LLDP)); 1649 1650 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC), 1651 (IXGBE_ETQF_FILTER_EN | 1652 IXGBE_ETQF_TX_ANTISPOOF | 1653 ETH_P_PAUSE)); 1654 1655 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf); 1656 } 1657 1658 return 0; 1659 } 1660 1661 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, 1662 bool setting) 1663 { 1664 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1665 1666 /* This operation is currently supported only for 82599 and x540 1667 * devices. 1668 */ 1669 if (adapter->hw.mac.type < ixgbe_mac_82599EB || 1670 adapter->hw.mac.type >= ixgbe_mac_X550) 1671 return -EOPNOTSUPP; 1672 1673 if (vf >= adapter->num_vfs) 1674 return -EINVAL; 1675 1676 adapter->vfinfo[vf].rss_query_enabled = setting; 1677 1678 return 0; 1679 } 1680 1681 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) 1682 { 1683 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1684 1685 if (vf >= adapter->num_vfs) 1686 return -EINVAL; 1687 1688 /* nothing to do */ 1689 if (adapter->vfinfo[vf].trusted == setting) 1690 return 0; 1691 1692 adapter->vfinfo[vf].trusted = setting; 1693 1694 /* reset VF to reconfigure features */ 1695 adapter->vfinfo[vf].clear_to_send = false; 1696 ixgbe_ping_vf(adapter, vf); 1697 1698 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not "); 1699 1700 return 0; 1701 } 1702 1703 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1704 int vf, struct ifla_vf_info *ivi) 1705 { 1706 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1707 if (vf >= adapter->num_vfs) 1708 return -EINVAL; 1709 ivi->vf = vf; 1710 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1711 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1712 ivi->min_tx_rate = 0; 1713 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1714 ivi->qos = adapter->vfinfo[vf].pf_qos; 1715 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1716 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; 1717 ivi->trusted = adapter->vfinfo[vf].trusted; 1718 return 0; 1719 } 1720