1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2015 Intel Corporation. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 You should have received a copy of the GNU General Public License along with 16 this program; if not, write to the Free Software Foundation, Inc., 17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 18 19 The full GNU General Public License is included in this distribution in 20 the file called "COPYING". 21 22 Contact Information: 23 Linux NICS <linux.nics@intel.com> 24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 26 27 *******************************************************************************/ 28 29 #include <linux/types.h> 30 #include <linux/module.h> 31 #include <linux/pci.h> 32 #include <linux/netdevice.h> 33 #include <linux/vmalloc.h> 34 #include <linux/string.h> 35 #include <linux/in.h> 36 #include <linux/ip.h> 37 #include <linux/tcp.h> 38 #include <linux/ipv6.h> 39 #include <linux/if_bridge.h> 40 #ifdef NETIF_F_HW_VLAN_CTAG_TX 41 #include <linux/if_vlan.h> 42 #endif 43 44 #include "ixgbe.h" 45 #include "ixgbe_type.h" 46 #include "ixgbe_sriov.h" 47 48 #ifdef CONFIG_PCI_IOV 49 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter) 50 { 51 struct ixgbe_hw *hw = &adapter->hw; 52 int num_vf_macvlans, i; 53 struct vf_macvlans *mv_list; 54 55 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; 56 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs); 57 58 /* Enable VMDq flag so device will be set in VM mode */ 59 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED; 60 if (!adapter->ring_feature[RING_F_VMDQ].limit) 61 adapter->ring_feature[RING_F_VMDQ].limit = 1; 62 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs; 63 64 num_vf_macvlans = hw->mac.num_rar_entries - 65 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs); 66 67 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans, 68 sizeof(struct vf_macvlans), 69 GFP_KERNEL); 70 if (mv_list) { 71 /* Initialize list of VF macvlans */ 72 INIT_LIST_HEAD(&adapter->vf_mvs.l); 73 for (i = 0; i < num_vf_macvlans; i++) { 74 mv_list->vf = -1; 75 mv_list->free = true; 76 list_add(&mv_list->l, &adapter->vf_mvs.l); 77 mv_list++; 78 } 79 } 80 81 /* Initialize default switching mode VEB */ 82 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 83 adapter->bridge_mode = BRIDGE_MODE_VEB; 84 85 /* If call to enable VFs succeeded then allocate memory 86 * for per VF control structures. 87 */ 88 adapter->vfinfo = 89 kcalloc(adapter->num_vfs, 90 sizeof(struct vf_data_storage), GFP_KERNEL); 91 if (adapter->vfinfo) { 92 /* limit trafffic classes based on VFs enabled */ 93 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && 94 (adapter->num_vfs < 16)) { 95 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 96 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 97 } else if (adapter->num_vfs < 32) { 98 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 99 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 100 } else { 101 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 102 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 103 } 104 105 /* Disable RSC when in SR-IOV mode */ 106 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 107 IXGBE_FLAG2_RSC_ENABLED); 108 109 for (i = 0; i < adapter->num_vfs; i++) { 110 /* enable spoof checking for all VFs */ 111 adapter->vfinfo[i].spoofchk_enabled = true; 112 113 /* We support VF RSS querying only for 82599 and x540 114 * devices at the moment. These devices share RSS 115 * indirection table and RSS hash key with PF therefore 116 * we want to disable the querying by default. 117 */ 118 adapter->vfinfo[i].rss_query_enabled = 0; 119 120 /* Untrust all VFs */ 121 adapter->vfinfo[i].trusted = false; 122 123 /* set the default xcast mode */ 124 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE; 125 } 126 127 return 0; 128 } 129 130 return -ENOMEM; 131 } 132 133 /** 134 * ixgbe_get_vfs - Find and take references to all vf devices 135 * @adapter: Pointer to adapter struct 136 */ 137 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter) 138 { 139 struct pci_dev *pdev = adapter->pdev; 140 u16 vendor = pdev->vendor; 141 struct pci_dev *vfdev; 142 int vf = 0; 143 u16 vf_id; 144 int pos; 145 146 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 147 if (!pos) 148 return; 149 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id); 150 151 vfdev = pci_get_device(vendor, vf_id, NULL); 152 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) { 153 if (!vfdev->is_virtfn) 154 continue; 155 if (vfdev->physfn != pdev) 156 continue; 157 if (vf >= adapter->num_vfs) 158 continue; 159 pci_dev_get(vfdev); 160 adapter->vfinfo[vf].vfdev = vfdev; 161 ++vf; 162 } 163 } 164 165 /* Note this function is called when the user wants to enable SR-IOV 166 * VFs using the now deprecated module parameter 167 */ 168 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter) 169 { 170 int pre_existing_vfs = 0; 171 172 pre_existing_vfs = pci_num_vf(adapter->pdev); 173 if (!pre_existing_vfs && !adapter->num_vfs) 174 return; 175 176 /* If there are pre-existing VFs then we have to force 177 * use of that many - over ride any module parameter value. 178 * This may result from the user unloading the PF driver 179 * while VFs were assigned to guest VMs or because the VFs 180 * have been created via the new PCI SR-IOV sysfs interface. 181 */ 182 if (pre_existing_vfs) { 183 adapter->num_vfs = pre_existing_vfs; 184 dev_warn(&adapter->pdev->dev, 185 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); 186 } else { 187 int err; 188 /* 189 * The 82599 supports up to 64 VFs per physical function 190 * but this implementation limits allocation to 63 so that 191 * basic networking resources are still available to the 192 * physical function. If the user requests greater than 193 * 63 VFs then it is an error - reset to default of zero. 194 */ 195 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT); 196 197 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); 198 if (err) { 199 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 200 adapter->num_vfs = 0; 201 return; 202 } 203 } 204 205 if (!__ixgbe_enable_sriov(adapter)) { 206 ixgbe_get_vfs(adapter); 207 return; 208 } 209 210 /* If we have gotten to this point then there is no memory available 211 * to manage the VF devices - print message and bail. 212 */ 213 e_err(probe, "Unable to allocate memory for VF Data Storage - " 214 "SRIOV disabled\n"); 215 ixgbe_disable_sriov(adapter); 216 } 217 218 #endif /* #ifdef CONFIG_PCI_IOV */ 219 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 220 { 221 unsigned int num_vfs = adapter->num_vfs, vf; 222 struct ixgbe_hw *hw = &adapter->hw; 223 u32 gpie; 224 u32 vmdctl; 225 int rss; 226 227 /* set num VFs to 0 to prevent access to vfinfo */ 228 adapter->num_vfs = 0; 229 230 /* put the reference to all of the vf devices */ 231 for (vf = 0; vf < num_vfs; ++vf) { 232 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 233 234 if (!vfdev) 235 continue; 236 adapter->vfinfo[vf].vfdev = NULL; 237 pci_dev_put(vfdev); 238 } 239 240 /* free VF control structures */ 241 kfree(adapter->vfinfo); 242 adapter->vfinfo = NULL; 243 244 /* free macvlan list */ 245 kfree(adapter->mv_list); 246 adapter->mv_list = NULL; 247 248 /* if SR-IOV is already disabled then there is nothing to do */ 249 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 250 return 0; 251 252 #ifdef CONFIG_PCI_IOV 253 /* 254 * If our VFs are assigned we cannot shut down SR-IOV 255 * without causing issues, so just leave the hardware 256 * available but disabled 257 */ 258 if (pci_vfs_assigned(adapter->pdev)) { 259 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 260 return -EPERM; 261 } 262 /* disable iov and allow time for transactions to clear */ 263 pci_disable_sriov(adapter->pdev); 264 #endif 265 266 /* turn off device IOV mode */ 267 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0); 268 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 269 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 270 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 271 272 /* set default pool back to 0 */ 273 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 274 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 275 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 276 IXGBE_WRITE_FLUSH(hw); 277 278 /* Disable VMDq flag so device will be set in VM mode */ 279 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) { 280 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 281 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 282 rss = min_t(int, ixgbe_max_rss_indices(adapter), 283 num_online_cpus()); 284 } else { 285 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 286 } 287 288 adapter->ring_feature[RING_F_VMDQ].offset = 0; 289 adapter->ring_feature[RING_F_RSS].limit = rss; 290 291 /* take a breather then clean up driver data */ 292 msleep(100); 293 return 0; 294 } 295 296 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 297 { 298 #ifdef CONFIG_PCI_IOV 299 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 300 int err = 0; 301 int i; 302 int pre_existing_vfs = pci_num_vf(dev); 303 304 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 305 err = ixgbe_disable_sriov(adapter); 306 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 307 return num_vfs; 308 309 if (err) 310 return err; 311 312 /* While the SR-IOV capability structure reports total VFs to be 64, 313 * we have to limit the actual number allocated based on two factors. 314 * First, we reserve some transmit/receive resources for the PF. 315 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 316 * account for this, so that we don't accidentally allocate more VFs 317 * than we have available pools. The PCI bus driver already checks for 318 * other values out of range. 319 */ 320 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS) 321 return -EPERM; 322 323 adapter->num_vfs = num_vfs; 324 325 err = __ixgbe_enable_sriov(adapter); 326 if (err) 327 return err; 328 329 for (i = 0; i < adapter->num_vfs; i++) 330 ixgbe_vf_configuration(dev, (i | 0x10000000)); 331 332 err = pci_enable_sriov(dev, num_vfs); 333 if (err) { 334 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 335 return err; 336 } 337 ixgbe_get_vfs(adapter); 338 ixgbe_sriov_reinit(adapter); 339 340 return num_vfs; 341 #else 342 return 0; 343 #endif 344 } 345 346 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 347 { 348 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 349 int err; 350 #ifdef CONFIG_PCI_IOV 351 u32 current_flags = adapter->flags; 352 #endif 353 354 err = ixgbe_disable_sriov(adapter); 355 356 /* Only reinit if no error and state changed */ 357 #ifdef CONFIG_PCI_IOV 358 if (!err && current_flags != adapter->flags) 359 ixgbe_sriov_reinit(adapter); 360 #endif 361 362 return err; 363 } 364 365 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 366 { 367 if (num_vfs == 0) 368 return ixgbe_pci_sriov_disable(dev); 369 else 370 return ixgbe_pci_sriov_enable(dev, num_vfs); 371 } 372 373 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 374 u32 *msgbuf, u32 vf) 375 { 376 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 377 >> IXGBE_VT_MSGINFO_SHIFT; 378 u16 *hash_list = (u16 *)&msgbuf[1]; 379 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 380 struct ixgbe_hw *hw = &adapter->hw; 381 int i; 382 u32 vector_bit; 383 u32 vector_reg; 384 u32 mta_reg; 385 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 386 387 /* only so many hash values supported */ 388 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 389 390 /* 391 * salt away the number of multi cast addresses assigned 392 * to this VF for later use to restore when the PF multi cast 393 * list changes 394 */ 395 vfinfo->num_vf_mc_hashes = entries; 396 397 /* 398 * VFs are limited to using the MTA hash table for their multicast 399 * addresses 400 */ 401 for (i = 0; i < entries; i++) { 402 vfinfo->vf_mc_hashes[i] = hash_list[i]; 403 } 404 405 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 406 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 407 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 408 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 409 mta_reg |= BIT(vector_bit); 410 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 411 } 412 vmolr |= IXGBE_VMOLR_ROMPE; 413 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 414 415 return 0; 416 } 417 418 #ifdef CONFIG_PCI_IOV 419 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 420 { 421 struct ixgbe_hw *hw = &adapter->hw; 422 struct vf_data_storage *vfinfo; 423 int i, j; 424 u32 vector_bit; 425 u32 vector_reg; 426 u32 mta_reg; 427 428 for (i = 0; i < adapter->num_vfs; i++) { 429 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 430 vfinfo = &adapter->vfinfo[i]; 431 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 432 hw->addr_ctrl.mta_in_use++; 433 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 434 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 435 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 436 mta_reg |= BIT(vector_bit); 437 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 438 } 439 440 if (vfinfo->num_vf_mc_hashes) 441 vmolr |= IXGBE_VMOLR_ROMPE; 442 else 443 vmolr &= ~IXGBE_VMOLR_ROMPE; 444 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 445 } 446 447 /* Restore any VF macvlans */ 448 ixgbe_full_sync_mac_table(adapter); 449 } 450 #endif 451 452 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 453 u32 vf) 454 { 455 struct ixgbe_hw *hw = &adapter->hw; 456 int err; 457 458 /* If VLAN overlaps with one the PF is currently monitoring make 459 * sure that we are able to allocate a VLVF entry. This may be 460 * redundant but it guarantees PF will maintain visibility to 461 * the VLAN. 462 */ 463 if (add && test_bit(vid, adapter->active_vlans)) { 464 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false); 465 if (err) 466 return err; 467 } 468 469 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false); 470 471 if (add && !err) 472 return err; 473 474 /* If we failed to add the VF VLAN or we are removing the VF VLAN 475 * we may need to drop the PF pool bit in order to allow us to free 476 * up the VLVF resources. 477 */ 478 if (test_bit(vid, adapter->active_vlans) || 479 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 480 ixgbe_update_pf_promisc_vlvf(adapter, vid); 481 482 return err; 483 } 484 485 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 486 { 487 struct ixgbe_hw *hw = &adapter->hw; 488 int max_frame = msgbuf[1]; 489 u32 max_frs; 490 491 /* 492 * For 82599EB we have to keep all PFs and VFs operating with 493 * the same max_frame value in order to avoid sending an oversize 494 * frame to a VF. In order to guarantee this is handled correctly 495 * for all cases we have several special exceptions to take into 496 * account before we can enable the VF for receive 497 */ 498 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 499 struct net_device *dev = adapter->netdev; 500 int pf_max_frame = dev->mtu + ETH_HLEN; 501 u32 reg_offset, vf_shift, vfre; 502 s32 err = 0; 503 504 #ifdef CONFIG_FCOE 505 if (dev->features & NETIF_F_FCOE_MTU) 506 pf_max_frame = max_t(int, pf_max_frame, 507 IXGBE_FCOE_JUMBO_FRAME_SIZE); 508 509 #endif /* CONFIG_FCOE */ 510 switch (adapter->vfinfo[vf].vf_api) { 511 case ixgbe_mbox_api_11: 512 case ixgbe_mbox_api_12: 513 /* 514 * Version 1.1 supports jumbo frames on VFs if PF has 515 * jumbo frames enabled which means legacy VFs are 516 * disabled 517 */ 518 if (pf_max_frame > ETH_FRAME_LEN) 519 break; 520 default: 521 /* 522 * If the PF or VF are running w/ jumbo frames enabled 523 * we need to shut down the VF Rx path as we cannot 524 * support jumbo frames on legacy VFs 525 */ 526 if ((pf_max_frame > ETH_FRAME_LEN) || 527 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 528 err = -EINVAL; 529 break; 530 } 531 532 /* determine VF receive enable location */ 533 vf_shift = vf % 32; 534 reg_offset = vf / 32; 535 536 /* enable or disable receive depending on error */ 537 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 538 if (err) 539 vfre &= ~BIT(vf_shift); 540 else 541 vfre |= BIT(vf_shift); 542 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 543 544 if (err) { 545 e_err(drv, "VF max_frame %d out of range\n", max_frame); 546 return err; 547 } 548 } 549 550 /* MTU < 68 is an error and causes problems on some kernels */ 551 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 552 e_err(drv, "VF max_frame %d out of range\n", max_frame); 553 return -EINVAL; 554 } 555 556 /* pull current max frame size from hardware */ 557 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 558 max_frs &= IXGBE_MHADD_MFS_MASK; 559 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 560 561 if (max_frs < max_frame) { 562 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 563 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 564 } 565 566 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 567 568 return 0; 569 } 570 571 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 572 { 573 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 574 vmolr |= IXGBE_VMOLR_BAM; 575 if (aupe) 576 vmolr |= IXGBE_VMOLR_AUPE; 577 else 578 vmolr &= ~IXGBE_VMOLR_AUPE; 579 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 580 } 581 582 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 583 { 584 struct ixgbe_hw *hw = &adapter->hw; 585 586 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 587 } 588 589 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf) 590 { 591 struct ixgbe_hw *hw = &adapter->hw; 592 u32 vlvfb_mask, pool_mask, i; 593 594 /* create mask for VF and other pools */ 595 pool_mask = ~BIT(VMDQ_P(0) % 32); 596 vlvfb_mask = BIT(vf % 32); 597 598 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */ 599 for (i = IXGBE_VLVF_ENTRIES; i--;) { 600 u32 bits[2], vlvfb, vid, vfta, vlvf; 601 u32 word = i * 2 + vf / 32; 602 u32 mask; 603 604 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 605 606 /* if our bit isn't set we can skip it */ 607 if (!(vlvfb & vlvfb_mask)) 608 continue; 609 610 /* clear our bit from vlvfb */ 611 vlvfb ^= vlvfb_mask; 612 613 /* create 64b mask to chedk to see if we should clear VLVF */ 614 bits[word % 2] = vlvfb; 615 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1)); 616 617 /* if other pools are present, just remove ourselves */ 618 if (bits[(VMDQ_P(0) / 32) ^ 1] || 619 (bits[VMDQ_P(0) / 32] & pool_mask)) 620 goto update_vlvfb; 621 622 /* if PF is present, leave VFTA */ 623 if (bits[0] || bits[1]) 624 goto update_vlvf; 625 626 /* if we cannot determine VLAN just remove ourselves */ 627 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 628 if (!vlvf) 629 goto update_vlvfb; 630 631 vid = vlvf & VLAN_VID_MASK; 632 mask = BIT(vid % 32); 633 634 /* clear bit from VFTA */ 635 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32)); 636 if (vfta & mask) 637 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask); 638 update_vlvf: 639 /* clear POOL selection enable */ 640 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0); 641 642 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 643 vlvfb = 0; 644 update_vlvfb: 645 /* clear pool bits */ 646 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb); 647 } 648 } 649 650 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 651 { 652 struct ixgbe_hw *hw = &adapter->hw; 653 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 654 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 655 656 /* remove VLAN filters beloning to this VF */ 657 ixgbe_clear_vf_vlans(adapter, vf); 658 659 /* add back PF assigned VLAN or VLAN 0 */ 660 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 661 662 /* reset offloads to defaults */ 663 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 664 665 /* set outgoing tags for VFs */ 666 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 667 ixgbe_clear_vmvir(adapter, vf); 668 } else { 669 if (vfinfo->pf_qos || !num_tcs) 670 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 671 vfinfo->pf_qos, vf); 672 else 673 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 674 adapter->default_up, vf); 675 676 if (vfinfo->spoofchk_enabled) 677 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 678 } 679 680 /* reset multicast table array for vf */ 681 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 682 683 /* Flush and reset the mta with the new values */ 684 ixgbe_set_rx_mode(adapter->netdev); 685 686 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 687 688 /* reset VF api back to unknown */ 689 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 690 } 691 692 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 693 int vf, unsigned char *mac_addr) 694 { 695 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 696 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN); 697 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 698 699 return 0; 700 } 701 702 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 703 int vf, int index, unsigned char *mac_addr) 704 { 705 struct list_head *pos; 706 struct vf_macvlans *entry; 707 708 if (index <= 1) { 709 list_for_each(pos, &adapter->vf_mvs.l) { 710 entry = list_entry(pos, struct vf_macvlans, l); 711 if (entry->vf == vf) { 712 entry->vf = -1; 713 entry->free = true; 714 entry->is_macvlan = false; 715 ixgbe_del_mac_filter(adapter, 716 entry->vf_macvlan, vf); 717 } 718 } 719 } 720 721 /* 722 * If index was zero then we were asked to clear the uc list 723 * for the VF. We're done. 724 */ 725 if (!index) 726 return 0; 727 728 entry = NULL; 729 730 list_for_each(pos, &adapter->vf_mvs.l) { 731 entry = list_entry(pos, struct vf_macvlans, l); 732 if (entry->free) 733 break; 734 } 735 736 /* 737 * If we traversed the entire list and didn't find a free entry 738 * then we're out of space on the RAR table. Also entry may 739 * be NULL because the original memory allocation for the list 740 * failed, which is not fatal but does mean we can't support 741 * VF requests for MACVLAN because we couldn't allocate 742 * memory for the list management required. 743 */ 744 if (!entry || !entry->free) 745 return -ENOSPC; 746 747 entry->free = false; 748 entry->is_macvlan = true; 749 entry->vf = vf; 750 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 751 752 ixgbe_add_mac_filter(adapter, mac_addr, vf); 753 754 return 0; 755 } 756 757 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 758 { 759 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 760 unsigned int vfn = (event_mask & 0x3f); 761 762 bool enable = ((event_mask & 0x10000000U) != 0); 763 764 if (enable) 765 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 766 767 return 0; 768 } 769 770 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 771 u32 qde) 772 { 773 struct ixgbe_hw *hw = &adapter->hw; 774 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 775 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 776 int i; 777 778 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 779 u32 reg; 780 781 /* flush previous write */ 782 IXGBE_WRITE_FLUSH(hw); 783 784 /* indicate to hardware that we want to set drop enable */ 785 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE; 786 reg |= i << IXGBE_QDE_IDX_SHIFT; 787 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 788 } 789 } 790 791 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 792 { 793 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 794 struct ixgbe_hw *hw = &adapter->hw; 795 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 796 u32 reg, reg_offset, vf_shift; 797 u32 msgbuf[4] = {0, 0, 0, 0}; 798 u8 *addr = (u8 *)(&msgbuf[1]); 799 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 800 int i; 801 802 e_info(probe, "VF Reset msg received from vf %d\n", vf); 803 804 /* reset the filters for the device */ 805 ixgbe_vf_reset_event(adapter, vf); 806 807 /* set vf mac address */ 808 if (!is_zero_ether_addr(vf_mac)) 809 ixgbe_set_vf_mac(adapter, vf, vf_mac); 810 811 vf_shift = vf % 32; 812 reg_offset = vf / 32; 813 814 /* enable transmit for vf */ 815 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 816 reg |= BIT(vf_shift); 817 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 818 819 /* force drop enable for all VF Rx queues */ 820 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 821 822 /* enable receive for vf */ 823 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 824 reg |= BIT(vf_shift); 825 /* 826 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 827 * For more info take a look at ixgbe_set_vf_lpe 828 */ 829 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 830 struct net_device *dev = adapter->netdev; 831 int pf_max_frame = dev->mtu + ETH_HLEN; 832 833 #ifdef CONFIG_FCOE 834 if (dev->features & NETIF_F_FCOE_MTU) 835 pf_max_frame = max_t(int, pf_max_frame, 836 IXGBE_FCOE_JUMBO_FRAME_SIZE); 837 838 #endif /* CONFIG_FCOE */ 839 if (pf_max_frame > ETH_FRAME_LEN) 840 reg &= ~BIT(vf_shift); 841 } 842 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 843 844 /* enable VF mailbox for further messages */ 845 adapter->vfinfo[vf].clear_to_send = true; 846 847 /* Enable counting of spoofed packets in the SSVPC register */ 848 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 849 reg |= BIT(vf_shift); 850 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 851 852 /* 853 * Reset the VFs TDWBAL and TDWBAH registers 854 * which are not cleared by an FLR 855 */ 856 for (i = 0; i < q_per_pool; i++) { 857 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 858 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 859 } 860 861 /* reply to reset with ack and vf mac address */ 862 msgbuf[0] = IXGBE_VF_RESET; 863 if (!is_zero_ether_addr(vf_mac)) { 864 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 865 memcpy(addr, vf_mac, ETH_ALEN); 866 } else { 867 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 868 dev_warn(&adapter->pdev->dev, 869 "VF %d has no MAC address assigned, you may have to assign one manually\n", 870 vf); 871 } 872 873 /* 874 * Piggyback the multicast filter type so VF can compute the 875 * correct vectors 876 */ 877 msgbuf[3] = hw->mac.mc_filter_type; 878 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 879 880 return 0; 881 } 882 883 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 884 u32 *msgbuf, u32 vf) 885 { 886 u8 *new_mac = ((u8 *)(&msgbuf[1])); 887 888 if (!is_valid_ether_addr(new_mac)) { 889 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 890 return -1; 891 } 892 893 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 894 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 895 e_warn(drv, 896 "VF %d attempted to override administratively set MAC address\n" 897 "Reload the VF driver to resume operations\n", 898 vf); 899 return -1; 900 } 901 902 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 903 } 904 905 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 906 u32 *msgbuf, u32 vf) 907 { 908 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 909 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 910 u8 tcs = netdev_get_num_tc(adapter->netdev); 911 912 if (adapter->vfinfo[vf].pf_vlan || tcs) { 913 e_warn(drv, 914 "VF %d attempted to override administratively set VLAN configuration\n" 915 "Reload the VF driver to resume operations\n", 916 vf); 917 return -1; 918 } 919 920 /* VLAN 0 is a special case, don't allow it to be removed */ 921 if (!vid && !add) 922 return 0; 923 924 return ixgbe_set_vf_vlan(adapter, add, vid, vf); 925 } 926 927 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 928 u32 *msgbuf, u32 vf) 929 { 930 u8 *new_mac = ((u8 *)(&msgbuf[1])); 931 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 932 IXGBE_VT_MSGINFO_SHIFT; 933 int err; 934 935 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 936 e_warn(drv, 937 "VF %d requested MACVLAN filter but is administratively denied\n", 938 vf); 939 return -1; 940 } 941 942 /* An non-zero index indicates the VF is setting a filter */ 943 if (index) { 944 if (!is_valid_ether_addr(new_mac)) { 945 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 946 return -1; 947 } 948 949 /* 950 * If the VF is allowed to set MAC filters then turn off 951 * anti-spoofing to avoid false positives. 952 */ 953 if (adapter->vfinfo[vf].spoofchk_enabled) { 954 struct ixgbe_hw *hw = &adapter->hw; 955 956 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf); 957 } 958 } 959 960 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 961 if (err == -ENOSPC) 962 e_warn(drv, 963 "VF %d has requested a MACVLAN filter but there is no space for it\n", 964 vf); 965 966 return err < 0; 967 } 968 969 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 970 u32 *msgbuf, u32 vf) 971 { 972 int api = msgbuf[1]; 973 974 switch (api) { 975 case ixgbe_mbox_api_10: 976 case ixgbe_mbox_api_11: 977 case ixgbe_mbox_api_12: 978 adapter->vfinfo[vf].vf_api = api; 979 return 0; 980 default: 981 break; 982 } 983 984 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 985 986 return -1; 987 } 988 989 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 990 u32 *msgbuf, u32 vf) 991 { 992 struct net_device *dev = adapter->netdev; 993 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 994 unsigned int default_tc = 0; 995 u8 num_tcs = netdev_get_num_tc(dev); 996 997 /* verify the PF is supporting the correct APIs */ 998 switch (adapter->vfinfo[vf].vf_api) { 999 case ixgbe_mbox_api_20: 1000 case ixgbe_mbox_api_11: 1001 case ixgbe_mbox_api_12: 1002 break; 1003 default: 1004 return -1; 1005 } 1006 1007 /* only allow 1 Tx queue for bandwidth limiting */ 1008 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1009 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1010 1011 /* if TCs > 1 determine which TC belongs to default user priority */ 1012 if (num_tcs > 1) 1013 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 1014 1015 /* notify VF of need for VLAN tag stripping, and correct queue */ 1016 if (num_tcs) 1017 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 1018 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 1019 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 1020 else 1021 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 1022 1023 /* notify VF of default queue */ 1024 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 1025 1026 return 0; 1027 } 1028 1029 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 1030 { 1031 u32 i, j; 1032 u32 *out_buf = &msgbuf[1]; 1033 const u8 *reta = adapter->rss_indir_tbl; 1034 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); 1035 1036 /* Check if operation is permitted */ 1037 if (!adapter->vfinfo[vf].rss_query_enabled) 1038 return -EPERM; 1039 1040 /* verify the PF is supporting the correct API */ 1041 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12) 1042 return -EOPNOTSUPP; 1043 1044 /* This mailbox command is supported (required) only for 82599 and x540 1045 * VFs which support up to 4 RSS queues. Therefore we will compress the 1046 * RETA by saving only 2 bits from each entry. This way we will be able 1047 * to transfer the whole RETA in a single mailbox operation. 1048 */ 1049 for (i = 0; i < reta_size / 16; i++) { 1050 out_buf[i] = 0; 1051 for (j = 0; j < 16; j++) 1052 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); 1053 } 1054 1055 return 0; 1056 } 1057 1058 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, 1059 u32 *msgbuf, u32 vf) 1060 { 1061 u32 *rss_key = &msgbuf[1]; 1062 1063 /* Check if the operation is permitted */ 1064 if (!adapter->vfinfo[vf].rss_query_enabled) 1065 return -EPERM; 1066 1067 /* verify the PF is supporting the correct API */ 1068 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12) 1069 return -EOPNOTSUPP; 1070 1071 memcpy(rss_key, adapter->rss_key, sizeof(adapter->rss_key)); 1072 1073 return 0; 1074 } 1075 1076 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter, 1077 u32 *msgbuf, u32 vf) 1078 { 1079 struct ixgbe_hw *hw = &adapter->hw; 1080 int xcast_mode = msgbuf[1]; 1081 u32 vmolr, disable, enable; 1082 1083 /* verify the PF is supporting the correct APIs */ 1084 switch (adapter->vfinfo[vf].vf_api) { 1085 case ixgbe_mbox_api_12: 1086 break; 1087 default: 1088 return -EOPNOTSUPP; 1089 } 1090 1091 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI && 1092 !adapter->vfinfo[vf].trusted) { 1093 xcast_mode = IXGBEVF_XCAST_MODE_MULTI; 1094 } 1095 1096 if (adapter->vfinfo[vf].xcast_mode == xcast_mode) 1097 goto out; 1098 1099 switch (xcast_mode) { 1100 case IXGBEVF_XCAST_MODE_NONE: 1101 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; 1102 enable = 0; 1103 break; 1104 case IXGBEVF_XCAST_MODE_MULTI: 1105 disable = IXGBE_VMOLR_MPE; 1106 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE; 1107 break; 1108 case IXGBEVF_XCAST_MODE_ALLMULTI: 1109 disable = 0; 1110 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; 1111 break; 1112 default: 1113 return -EOPNOTSUPP; 1114 } 1115 1116 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 1117 vmolr &= ~disable; 1118 vmolr |= enable; 1119 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 1120 1121 adapter->vfinfo[vf].xcast_mode = xcast_mode; 1122 1123 out: 1124 msgbuf[1] = xcast_mode; 1125 1126 return 0; 1127 } 1128 1129 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1130 { 1131 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 1132 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 1133 struct ixgbe_hw *hw = &adapter->hw; 1134 s32 retval; 1135 1136 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 1137 1138 if (retval) { 1139 pr_err("Error receiving message from VF\n"); 1140 return retval; 1141 } 1142 1143 /* this is a message we already processed, do nothing */ 1144 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 1145 return 0; 1146 1147 /* flush the ack before we write any messages back */ 1148 IXGBE_WRITE_FLUSH(hw); 1149 1150 if (msgbuf[0] == IXGBE_VF_RESET) 1151 return ixgbe_vf_reset_msg(adapter, vf); 1152 1153 /* 1154 * until the vf completes a virtual function reset it should not be 1155 * allowed to start any configuration. 1156 */ 1157 if (!adapter->vfinfo[vf].clear_to_send) { 1158 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1159 ixgbe_write_mbx(hw, msgbuf, 1, vf); 1160 return 0; 1161 } 1162 1163 switch ((msgbuf[0] & 0xFFFF)) { 1164 case IXGBE_VF_SET_MAC_ADDR: 1165 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 1166 break; 1167 case IXGBE_VF_SET_MULTICAST: 1168 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 1169 break; 1170 case IXGBE_VF_SET_VLAN: 1171 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1172 break; 1173 case IXGBE_VF_SET_LPE: 1174 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 1175 break; 1176 case IXGBE_VF_SET_MACVLAN: 1177 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1178 break; 1179 case IXGBE_VF_API_NEGOTIATE: 1180 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 1181 break; 1182 case IXGBE_VF_GET_QUEUES: 1183 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1184 break; 1185 case IXGBE_VF_GET_RETA: 1186 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); 1187 break; 1188 case IXGBE_VF_GET_RSS_KEY: 1189 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); 1190 break; 1191 case IXGBE_VF_UPDATE_XCAST_MODE: 1192 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf); 1193 break; 1194 default: 1195 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1196 retval = IXGBE_ERR_MBX; 1197 break; 1198 } 1199 1200 /* notify the VF of the results of what it sent us */ 1201 if (retval) 1202 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1203 else 1204 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1205 1206 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1207 1208 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1209 1210 return retval; 1211 } 1212 1213 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1214 { 1215 struct ixgbe_hw *hw = &adapter->hw; 1216 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1217 1218 /* if device isn't clear to send it shouldn't be reading either */ 1219 if (!adapter->vfinfo[vf].clear_to_send) 1220 ixgbe_write_mbx(hw, &msg, 1, vf); 1221 } 1222 1223 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1224 { 1225 struct ixgbe_hw *hw = &adapter->hw; 1226 u32 vf; 1227 1228 for (vf = 0; vf < adapter->num_vfs; vf++) { 1229 /* process any reset requests */ 1230 if (!ixgbe_check_for_rst(hw, vf)) 1231 ixgbe_vf_reset_event(adapter, vf); 1232 1233 /* process any messages pending */ 1234 if (!ixgbe_check_for_msg(hw, vf)) 1235 ixgbe_rcv_msg_from_vf(adapter, vf); 1236 1237 /* process any acks */ 1238 if (!ixgbe_check_for_ack(hw, vf)) 1239 ixgbe_rcv_ack_from_vf(adapter, vf); 1240 } 1241 } 1242 1243 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1244 { 1245 struct ixgbe_hw *hw = &adapter->hw; 1246 1247 /* disable transmit and receive for all vfs */ 1248 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1249 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1250 1251 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1252 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1253 } 1254 1255 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf) 1256 { 1257 struct ixgbe_hw *hw = &adapter->hw; 1258 u32 ping; 1259 1260 ping = IXGBE_PF_CONTROL_MSG; 1261 if (adapter->vfinfo[vf].clear_to_send) 1262 ping |= IXGBE_VT_MSGTYPE_CTS; 1263 ixgbe_write_mbx(hw, &ping, 1, vf); 1264 } 1265 1266 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1267 { 1268 struct ixgbe_hw *hw = &adapter->hw; 1269 u32 ping; 1270 int i; 1271 1272 for (i = 0 ; i < adapter->num_vfs; i++) { 1273 ping = IXGBE_PF_CONTROL_MSG; 1274 if (adapter->vfinfo[i].clear_to_send) 1275 ping |= IXGBE_VT_MSGTYPE_CTS; 1276 ixgbe_write_mbx(hw, &ping, 1, i); 1277 } 1278 } 1279 1280 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1281 { 1282 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1283 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 1284 return -EINVAL; 1285 adapter->vfinfo[vf].pf_set_mac = true; 1286 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 1287 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 1288 " change effective."); 1289 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1290 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 1291 " but the PF device is not up.\n"); 1292 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 1293 " attempting to use the VF device.\n"); 1294 } 1295 return ixgbe_set_vf_mac(adapter, vf, mac); 1296 } 1297 1298 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1299 u16 vlan, u8 qos) 1300 { 1301 struct ixgbe_hw *hw = &adapter->hw; 1302 int err; 1303 1304 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1305 if (err) 1306 goto out; 1307 1308 /* Revoke tagless access via VLAN 0 */ 1309 ixgbe_set_vf_vlan(adapter, false, 0, vf); 1310 1311 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1312 ixgbe_set_vmolr(hw, vf, false); 1313 1314 /* enable hide vlan on X550 */ 1315 if (hw->mac.type >= ixgbe_mac_X550) 1316 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1317 IXGBE_QDE_HIDE_VLAN); 1318 1319 adapter->vfinfo[vf].pf_vlan = vlan; 1320 adapter->vfinfo[vf].pf_qos = qos; 1321 dev_info(&adapter->pdev->dev, 1322 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1323 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1324 dev_warn(&adapter->pdev->dev, 1325 "The VF VLAN has been set, but the PF device is not up.\n"); 1326 dev_warn(&adapter->pdev->dev, 1327 "Bring the PF device up before attempting to use the VF device.\n"); 1328 } 1329 1330 out: 1331 return err; 1332 } 1333 1334 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1335 { 1336 struct ixgbe_hw *hw = &adapter->hw; 1337 int err; 1338 1339 err = ixgbe_set_vf_vlan(adapter, false, 1340 adapter->vfinfo[vf].pf_vlan, vf); 1341 /* Restore tagless access via VLAN 0 */ 1342 ixgbe_set_vf_vlan(adapter, true, 0, vf); 1343 ixgbe_clear_vmvir(adapter, vf); 1344 ixgbe_set_vmolr(hw, vf, true); 1345 1346 /* disable hide VLAN on X550 */ 1347 if (hw->mac.type >= ixgbe_mac_X550) 1348 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1349 1350 adapter->vfinfo[vf].pf_vlan = 0; 1351 adapter->vfinfo[vf].pf_qos = 0; 1352 1353 return err; 1354 } 1355 1356 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 1357 { 1358 int err = 0; 1359 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1360 1361 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1362 return -EINVAL; 1363 if (vlan || qos) { 1364 /* Check if there is already a port VLAN set, if so 1365 * we have to delete the old one first before we 1366 * can set the new one. The usage model had 1367 * previously assumed the user would delete the 1368 * old port VLAN before setting a new one but this 1369 * is not necessarily the case. 1370 */ 1371 if (adapter->vfinfo[vf].pf_vlan) 1372 err = ixgbe_disable_port_vlan(adapter, vf); 1373 if (err) 1374 goto out; 1375 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1376 } else { 1377 err = ixgbe_disable_port_vlan(adapter, vf); 1378 } 1379 1380 out: 1381 return err; 1382 } 1383 1384 int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1385 { 1386 switch (adapter->link_speed) { 1387 case IXGBE_LINK_SPEED_100_FULL: 1388 return 100; 1389 case IXGBE_LINK_SPEED_1GB_FULL: 1390 return 1000; 1391 case IXGBE_LINK_SPEED_10GB_FULL: 1392 return 10000; 1393 default: 1394 return 0; 1395 } 1396 } 1397 1398 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1399 { 1400 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1401 struct ixgbe_hw *hw = &adapter->hw; 1402 u32 bcnrc_val = 0; 1403 u16 queue, queues_per_pool; 1404 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1405 1406 if (tx_rate) { 1407 /* start with base link speed value */ 1408 bcnrc_val = adapter->vf_rate_link_speed; 1409 1410 /* Calculate the rate factor values to set */ 1411 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1412 bcnrc_val /= tx_rate; 1413 1414 /* clear everything but the rate factor */ 1415 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1416 IXGBE_RTTBCNRC_RF_DEC_MASK; 1417 1418 /* enable the rate scheduler */ 1419 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1420 } 1421 1422 /* 1423 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1424 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1425 * and 0x004 otherwise. 1426 */ 1427 switch (hw->mac.type) { 1428 case ixgbe_mac_82599EB: 1429 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1430 break; 1431 case ixgbe_mac_X540: 1432 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1433 break; 1434 default: 1435 break; 1436 } 1437 1438 /* determine how many queues per pool based on VMDq mask */ 1439 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1440 1441 /* write value for all Tx queues belonging to VF */ 1442 for (queue = 0; queue < queues_per_pool; queue++) { 1443 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1444 1445 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1446 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1447 } 1448 } 1449 1450 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1451 { 1452 int i; 1453 1454 /* VF Tx rate limit was not set */ 1455 if (!adapter->vf_rate_link_speed) 1456 return; 1457 1458 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1459 adapter->vf_rate_link_speed = 0; 1460 dev_info(&adapter->pdev->dev, 1461 "Link speed has been changed. VF Transmit rate is disabled\n"); 1462 } 1463 1464 for (i = 0; i < adapter->num_vfs; i++) { 1465 if (!adapter->vf_rate_link_speed) 1466 adapter->vfinfo[i].tx_rate = 0; 1467 1468 ixgbe_set_vf_rate_limit(adapter, i); 1469 } 1470 } 1471 1472 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1473 int max_tx_rate) 1474 { 1475 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1476 int link_speed; 1477 1478 /* verify VF is active */ 1479 if (vf >= adapter->num_vfs) 1480 return -EINVAL; 1481 1482 /* verify link is up */ 1483 if (!adapter->link_up) 1484 return -EINVAL; 1485 1486 /* verify we are linked at 10Gbps */ 1487 link_speed = ixgbe_link_mbps(adapter); 1488 if (link_speed != 10000) 1489 return -EINVAL; 1490 1491 if (min_tx_rate) 1492 return -EINVAL; 1493 1494 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1495 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1496 return -EINVAL; 1497 1498 /* store values */ 1499 adapter->vf_rate_link_speed = link_speed; 1500 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1501 1502 /* update hardware configuration */ 1503 ixgbe_set_vf_rate_limit(adapter, vf); 1504 1505 return 0; 1506 } 1507 1508 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1509 { 1510 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1511 struct ixgbe_hw *hw = &adapter->hw; 1512 1513 if (vf >= adapter->num_vfs) 1514 return -EINVAL; 1515 1516 adapter->vfinfo[vf].spoofchk_enabled = setting; 1517 1518 /* configure MAC spoofing */ 1519 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf); 1520 1521 /* configure VLAN spoofing */ 1522 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf); 1523 1524 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be 1525 * calling set_ethertype_anti_spoofing for each VF in loop below 1526 */ 1527 if (hw->mac.ops.set_ethertype_anti_spoofing) { 1528 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP), 1529 (IXGBE_ETQF_FILTER_EN | 1530 IXGBE_ETQF_TX_ANTISPOOF | 1531 IXGBE_ETH_P_LLDP)); 1532 1533 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC), 1534 (IXGBE_ETQF_FILTER_EN | 1535 IXGBE_ETQF_TX_ANTISPOOF | 1536 ETH_P_PAUSE)); 1537 1538 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf); 1539 } 1540 1541 return 0; 1542 } 1543 1544 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, 1545 bool setting) 1546 { 1547 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1548 1549 /* This operation is currently supported only for 82599 and x540 1550 * devices. 1551 */ 1552 if (adapter->hw.mac.type < ixgbe_mac_82599EB || 1553 adapter->hw.mac.type >= ixgbe_mac_X550) 1554 return -EOPNOTSUPP; 1555 1556 if (vf >= adapter->num_vfs) 1557 return -EINVAL; 1558 1559 adapter->vfinfo[vf].rss_query_enabled = setting; 1560 1561 return 0; 1562 } 1563 1564 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) 1565 { 1566 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1567 1568 if (vf >= adapter->num_vfs) 1569 return -EINVAL; 1570 1571 /* nothing to do */ 1572 if (adapter->vfinfo[vf].trusted == setting) 1573 return 0; 1574 1575 adapter->vfinfo[vf].trusted = setting; 1576 1577 /* reset VF to reconfigure features */ 1578 adapter->vfinfo[vf].clear_to_send = false; 1579 ixgbe_ping_vf(adapter, vf); 1580 1581 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not "); 1582 1583 return 0; 1584 } 1585 1586 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1587 int vf, struct ifla_vf_info *ivi) 1588 { 1589 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1590 if (vf >= adapter->num_vfs) 1591 return -EINVAL; 1592 ivi->vf = vf; 1593 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1594 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1595 ivi->min_tx_rate = 0; 1596 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1597 ivi->qos = adapter->vfinfo[vf].pf_qos; 1598 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1599 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; 1600 ivi->trusted = adapter->vfinfo[vf].trusted; 1601 return 0; 1602 } 1603