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