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 /* reset before enabling SRIOV to avoid mailbox issues */ 333 ixgbe_sriov_reinit(adapter); 334 335 err = pci_enable_sriov(dev, num_vfs); 336 if (err) { 337 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 338 return err; 339 } 340 ixgbe_get_vfs(adapter); 341 342 return num_vfs; 343 #else 344 return 0; 345 #endif 346 } 347 348 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 349 { 350 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 351 int err; 352 #ifdef CONFIG_PCI_IOV 353 u32 current_flags = adapter->flags; 354 #endif 355 356 err = ixgbe_disable_sriov(adapter); 357 358 /* Only reinit if no error and state changed */ 359 #ifdef CONFIG_PCI_IOV 360 if (!err && current_flags != adapter->flags) 361 ixgbe_sriov_reinit(adapter); 362 #endif 363 364 return err; 365 } 366 367 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 368 { 369 if (num_vfs == 0) 370 return ixgbe_pci_sriov_disable(dev); 371 else 372 return ixgbe_pci_sriov_enable(dev, num_vfs); 373 } 374 375 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 376 u32 *msgbuf, u32 vf) 377 { 378 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 379 >> IXGBE_VT_MSGINFO_SHIFT; 380 u16 *hash_list = (u16 *)&msgbuf[1]; 381 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 382 struct ixgbe_hw *hw = &adapter->hw; 383 int i; 384 u32 vector_bit; 385 u32 vector_reg; 386 u32 mta_reg; 387 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 388 389 /* only so many hash values supported */ 390 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 391 392 /* 393 * salt away the number of multi cast addresses assigned 394 * to this VF for later use to restore when the PF multi cast 395 * list changes 396 */ 397 vfinfo->num_vf_mc_hashes = entries; 398 399 /* 400 * VFs are limited to using the MTA hash table for their multicast 401 * addresses 402 */ 403 for (i = 0; i < entries; i++) { 404 vfinfo->vf_mc_hashes[i] = hash_list[i]; 405 } 406 407 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 408 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 409 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 410 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 411 mta_reg |= BIT(vector_bit); 412 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 413 } 414 vmolr |= IXGBE_VMOLR_ROMPE; 415 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 416 417 return 0; 418 } 419 420 #ifdef CONFIG_PCI_IOV 421 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 422 { 423 struct ixgbe_hw *hw = &adapter->hw; 424 struct vf_data_storage *vfinfo; 425 int i, j; 426 u32 vector_bit; 427 u32 vector_reg; 428 u32 mta_reg; 429 430 for (i = 0; i < adapter->num_vfs; i++) { 431 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 432 vfinfo = &adapter->vfinfo[i]; 433 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 434 hw->addr_ctrl.mta_in_use++; 435 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 436 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 437 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 438 mta_reg |= BIT(vector_bit); 439 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 440 } 441 442 if (vfinfo->num_vf_mc_hashes) 443 vmolr |= IXGBE_VMOLR_ROMPE; 444 else 445 vmolr &= ~IXGBE_VMOLR_ROMPE; 446 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 447 } 448 449 /* Restore any VF macvlans */ 450 ixgbe_full_sync_mac_table(adapter); 451 } 452 #endif 453 454 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 455 u32 vf) 456 { 457 struct ixgbe_hw *hw = &adapter->hw; 458 int err; 459 460 /* If VLAN overlaps with one the PF is currently monitoring make 461 * sure that we are able to allocate a VLVF entry. This may be 462 * redundant but it guarantees PF will maintain visibility to 463 * the VLAN. 464 */ 465 if (add && test_bit(vid, adapter->active_vlans)) { 466 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false); 467 if (err) 468 return err; 469 } 470 471 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false); 472 473 if (add && !err) 474 return err; 475 476 /* If we failed to add the VF VLAN or we are removing the VF VLAN 477 * we may need to drop the PF pool bit in order to allow us to free 478 * up the VLVF resources. 479 */ 480 if (test_bit(vid, adapter->active_vlans) || 481 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 482 ixgbe_update_pf_promisc_vlvf(adapter, vid); 483 484 return err; 485 } 486 487 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 488 { 489 struct ixgbe_hw *hw = &adapter->hw; 490 int max_frame = msgbuf[1]; 491 u32 max_frs; 492 493 /* 494 * For 82599EB we have to keep all PFs and VFs operating with 495 * the same max_frame value in order to avoid sending an oversize 496 * frame to a VF. In order to guarantee this is handled correctly 497 * for all cases we have several special exceptions to take into 498 * account before we can enable the VF for receive 499 */ 500 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 501 struct net_device *dev = adapter->netdev; 502 int pf_max_frame = dev->mtu + ETH_HLEN; 503 u32 reg_offset, vf_shift, vfre; 504 s32 err = 0; 505 506 #ifdef CONFIG_FCOE 507 if (dev->features & NETIF_F_FCOE_MTU) 508 pf_max_frame = max_t(int, pf_max_frame, 509 IXGBE_FCOE_JUMBO_FRAME_SIZE); 510 511 #endif /* CONFIG_FCOE */ 512 switch (adapter->vfinfo[vf].vf_api) { 513 case ixgbe_mbox_api_11: 514 case ixgbe_mbox_api_12: 515 case ixgbe_mbox_api_13: 516 /* 517 * Version 1.1 supports jumbo frames on VFs if PF has 518 * jumbo frames enabled which means legacy VFs are 519 * disabled 520 */ 521 if (pf_max_frame > ETH_FRAME_LEN) 522 break; 523 default: 524 /* 525 * If the PF or VF are running w/ jumbo frames enabled 526 * we need to shut down the VF Rx path as we cannot 527 * support jumbo frames on legacy VFs 528 */ 529 if ((pf_max_frame > ETH_FRAME_LEN) || 530 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 531 err = -EINVAL; 532 break; 533 } 534 535 /* determine VF receive enable location */ 536 vf_shift = vf % 32; 537 reg_offset = vf / 32; 538 539 /* enable or disable receive depending on error */ 540 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 541 if (err) 542 vfre &= ~BIT(vf_shift); 543 else 544 vfre |= BIT(vf_shift); 545 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 546 547 if (err) { 548 e_err(drv, "VF max_frame %d out of range\n", max_frame); 549 return err; 550 } 551 } 552 553 /* MTU < 68 is an error and causes problems on some kernels */ 554 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 555 e_err(drv, "VF max_frame %d out of range\n", max_frame); 556 return -EINVAL; 557 } 558 559 /* pull current max frame size from hardware */ 560 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 561 max_frs &= IXGBE_MHADD_MFS_MASK; 562 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 563 564 if (max_frs < max_frame) { 565 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 566 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 567 } 568 569 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 570 571 return 0; 572 } 573 574 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 575 { 576 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 577 vmolr |= IXGBE_VMOLR_BAM; 578 if (aupe) 579 vmolr |= IXGBE_VMOLR_AUPE; 580 else 581 vmolr &= ~IXGBE_VMOLR_AUPE; 582 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 583 } 584 585 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 586 { 587 struct ixgbe_hw *hw = &adapter->hw; 588 589 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 590 } 591 592 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf) 593 { 594 struct ixgbe_hw *hw = &adapter->hw; 595 u32 vlvfb_mask, pool_mask, i; 596 597 /* create mask for VF and other pools */ 598 pool_mask = ~BIT(VMDQ_P(0) % 32); 599 vlvfb_mask = BIT(vf % 32); 600 601 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */ 602 for (i = IXGBE_VLVF_ENTRIES; i--;) { 603 u32 bits[2], vlvfb, vid, vfta, vlvf; 604 u32 word = i * 2 + vf / 32; 605 u32 mask; 606 607 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 608 609 /* if our bit isn't set we can skip it */ 610 if (!(vlvfb & vlvfb_mask)) 611 continue; 612 613 /* clear our bit from vlvfb */ 614 vlvfb ^= vlvfb_mask; 615 616 /* create 64b mask to chedk to see if we should clear VLVF */ 617 bits[word % 2] = vlvfb; 618 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1)); 619 620 /* if other pools are present, just remove ourselves */ 621 if (bits[(VMDQ_P(0) / 32) ^ 1] || 622 (bits[VMDQ_P(0) / 32] & pool_mask)) 623 goto update_vlvfb; 624 625 /* if PF is present, leave VFTA */ 626 if (bits[0] || bits[1]) 627 goto update_vlvf; 628 629 /* if we cannot determine VLAN just remove ourselves */ 630 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 631 if (!vlvf) 632 goto update_vlvfb; 633 634 vid = vlvf & VLAN_VID_MASK; 635 mask = BIT(vid % 32); 636 637 /* clear bit from VFTA */ 638 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32)); 639 if (vfta & mask) 640 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask); 641 update_vlvf: 642 /* clear POOL selection enable */ 643 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0); 644 645 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 646 vlvfb = 0; 647 update_vlvfb: 648 /* clear pool bits */ 649 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb); 650 } 651 } 652 653 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 654 { 655 struct ixgbe_hw *hw = &adapter->hw; 656 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 657 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 658 659 /* remove VLAN filters beloning to this VF */ 660 ixgbe_clear_vf_vlans(adapter, vf); 661 662 /* add back PF assigned VLAN or VLAN 0 */ 663 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 664 665 /* reset offloads to defaults */ 666 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 667 668 /* set outgoing tags for VFs */ 669 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 670 ixgbe_clear_vmvir(adapter, vf); 671 } else { 672 if (vfinfo->pf_qos || !num_tcs) 673 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 674 vfinfo->pf_qos, vf); 675 else 676 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 677 adapter->default_up, vf); 678 679 if (vfinfo->spoofchk_enabled) 680 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 681 } 682 683 /* reset multicast table array for vf */ 684 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 685 686 /* Flush and reset the mta with the new values */ 687 ixgbe_set_rx_mode(adapter->netdev); 688 689 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 690 691 /* reset VF api back to unknown */ 692 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 693 } 694 695 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 696 int vf, unsigned char *mac_addr) 697 { 698 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 699 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN); 700 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 701 702 return 0; 703 } 704 705 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 706 int vf, int index, unsigned char *mac_addr) 707 { 708 struct list_head *pos; 709 struct vf_macvlans *entry; 710 711 if (index <= 1) { 712 list_for_each(pos, &adapter->vf_mvs.l) { 713 entry = list_entry(pos, struct vf_macvlans, l); 714 if (entry->vf == vf) { 715 entry->vf = -1; 716 entry->free = true; 717 entry->is_macvlan = false; 718 ixgbe_del_mac_filter(adapter, 719 entry->vf_macvlan, vf); 720 } 721 } 722 } 723 724 /* 725 * If index was zero then we were asked to clear the uc list 726 * for the VF. We're done. 727 */ 728 if (!index) 729 return 0; 730 731 entry = NULL; 732 733 list_for_each(pos, &adapter->vf_mvs.l) { 734 entry = list_entry(pos, struct vf_macvlans, l); 735 if (entry->free) 736 break; 737 } 738 739 /* 740 * If we traversed the entire list and didn't find a free entry 741 * then we're out of space on the RAR table. Also entry may 742 * be NULL because the original memory allocation for the list 743 * failed, which is not fatal but does mean we can't support 744 * VF requests for MACVLAN because we couldn't allocate 745 * memory for the list management required. 746 */ 747 if (!entry || !entry->free) 748 return -ENOSPC; 749 750 entry->free = false; 751 entry->is_macvlan = true; 752 entry->vf = vf; 753 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 754 755 ixgbe_add_mac_filter(adapter, mac_addr, vf); 756 757 return 0; 758 } 759 760 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 761 { 762 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 763 unsigned int vfn = (event_mask & 0x3f); 764 765 bool enable = ((event_mask & 0x10000000U) != 0); 766 767 if (enable) 768 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 769 770 return 0; 771 } 772 773 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 774 u32 qde) 775 { 776 struct ixgbe_hw *hw = &adapter->hw; 777 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 778 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 779 int i; 780 781 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 782 u32 reg; 783 784 /* flush previous write */ 785 IXGBE_WRITE_FLUSH(hw); 786 787 /* indicate to hardware that we want to set drop enable */ 788 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE; 789 reg |= i << IXGBE_QDE_IDX_SHIFT; 790 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 791 } 792 } 793 794 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 795 { 796 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 797 struct ixgbe_hw *hw = &adapter->hw; 798 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 799 u32 reg, reg_offset, vf_shift; 800 u32 msgbuf[4] = {0, 0, 0, 0}; 801 u8 *addr = (u8 *)(&msgbuf[1]); 802 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 803 int i; 804 805 e_info(probe, "VF Reset msg received from vf %d\n", vf); 806 807 /* reset the filters for the device */ 808 ixgbe_vf_reset_event(adapter, vf); 809 810 /* set vf mac address */ 811 if (!is_zero_ether_addr(vf_mac)) 812 ixgbe_set_vf_mac(adapter, vf, vf_mac); 813 814 vf_shift = vf % 32; 815 reg_offset = vf / 32; 816 817 /* enable transmit for vf */ 818 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 819 reg |= BIT(vf_shift); 820 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 821 822 /* force drop enable for all VF Rx queues */ 823 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 824 825 /* enable receive for vf */ 826 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 827 reg |= BIT(vf_shift); 828 /* 829 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 830 * For more info take a look at ixgbe_set_vf_lpe 831 */ 832 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 833 struct net_device *dev = adapter->netdev; 834 int pf_max_frame = dev->mtu + ETH_HLEN; 835 836 #ifdef CONFIG_FCOE 837 if (dev->features & NETIF_F_FCOE_MTU) 838 pf_max_frame = max_t(int, pf_max_frame, 839 IXGBE_FCOE_JUMBO_FRAME_SIZE); 840 841 #endif /* CONFIG_FCOE */ 842 if (pf_max_frame > ETH_FRAME_LEN) 843 reg &= ~BIT(vf_shift); 844 } 845 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 846 847 /* enable VF mailbox for further messages */ 848 adapter->vfinfo[vf].clear_to_send = true; 849 850 /* Enable counting of spoofed packets in the SSVPC register */ 851 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 852 reg |= BIT(vf_shift); 853 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 854 855 /* 856 * Reset the VFs TDWBAL and TDWBAH registers 857 * which are not cleared by an FLR 858 */ 859 for (i = 0; i < q_per_pool; i++) { 860 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 861 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 862 } 863 864 /* reply to reset with ack and vf mac address */ 865 msgbuf[0] = IXGBE_VF_RESET; 866 if (!is_zero_ether_addr(vf_mac)) { 867 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 868 memcpy(addr, vf_mac, ETH_ALEN); 869 } else { 870 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 871 dev_warn(&adapter->pdev->dev, 872 "VF %d has no MAC address assigned, you may have to assign one manually\n", 873 vf); 874 } 875 876 /* 877 * Piggyback the multicast filter type so VF can compute the 878 * correct vectors 879 */ 880 msgbuf[3] = hw->mac.mc_filter_type; 881 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 882 883 return 0; 884 } 885 886 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 887 u32 *msgbuf, u32 vf) 888 { 889 u8 *new_mac = ((u8 *)(&msgbuf[1])); 890 891 if (!is_valid_ether_addr(new_mac)) { 892 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 893 return -1; 894 } 895 896 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 897 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 898 e_warn(drv, 899 "VF %d attempted to override administratively set MAC address\n" 900 "Reload the VF driver to resume operations\n", 901 vf); 902 return -1; 903 } 904 905 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 906 } 907 908 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 909 u32 *msgbuf, u32 vf) 910 { 911 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 912 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 913 u8 tcs = netdev_get_num_tc(adapter->netdev); 914 915 if (adapter->vfinfo[vf].pf_vlan || tcs) { 916 e_warn(drv, 917 "VF %d attempted to override administratively set VLAN configuration\n" 918 "Reload the VF driver to resume operations\n", 919 vf); 920 return -1; 921 } 922 923 /* VLAN 0 is a special case, don't allow it to be removed */ 924 if (!vid && !add) 925 return 0; 926 927 return ixgbe_set_vf_vlan(adapter, add, vid, vf); 928 } 929 930 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 931 u32 *msgbuf, u32 vf) 932 { 933 u8 *new_mac = ((u8 *)(&msgbuf[1])); 934 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 935 IXGBE_VT_MSGINFO_SHIFT; 936 int err; 937 938 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 939 index > 0) { 940 e_warn(drv, 941 "VF %d requested MACVLAN filter but is administratively denied\n", 942 vf); 943 return -1; 944 } 945 946 /* An non-zero index indicates the VF is setting a filter */ 947 if (index) { 948 if (!is_valid_ether_addr(new_mac)) { 949 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 950 return -1; 951 } 952 953 /* 954 * If the VF is allowed to set MAC filters then turn off 955 * anti-spoofing to avoid false positives. 956 */ 957 if (adapter->vfinfo[vf].spoofchk_enabled) { 958 struct ixgbe_hw *hw = &adapter->hw; 959 960 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf); 961 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 962 } 963 } 964 965 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 966 if (err == -ENOSPC) 967 e_warn(drv, 968 "VF %d has requested a MACVLAN filter but there is no space for it\n", 969 vf); 970 971 return err < 0; 972 } 973 974 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 975 u32 *msgbuf, u32 vf) 976 { 977 int api = msgbuf[1]; 978 979 switch (api) { 980 case ixgbe_mbox_api_10: 981 case ixgbe_mbox_api_11: 982 case ixgbe_mbox_api_12: 983 case ixgbe_mbox_api_13: 984 adapter->vfinfo[vf].vf_api = api; 985 return 0; 986 default: 987 break; 988 } 989 990 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 991 992 return -1; 993 } 994 995 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 996 u32 *msgbuf, u32 vf) 997 { 998 struct net_device *dev = adapter->netdev; 999 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1000 unsigned int default_tc = 0; 1001 u8 num_tcs = netdev_get_num_tc(dev); 1002 1003 /* verify the PF is supporting the correct APIs */ 1004 switch (adapter->vfinfo[vf].vf_api) { 1005 case ixgbe_mbox_api_20: 1006 case ixgbe_mbox_api_11: 1007 case ixgbe_mbox_api_12: 1008 case ixgbe_mbox_api_13: 1009 break; 1010 default: 1011 return -1; 1012 } 1013 1014 /* only allow 1 Tx queue for bandwidth limiting */ 1015 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1016 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1017 1018 /* if TCs > 1 determine which TC belongs to default user priority */ 1019 if (num_tcs > 1) 1020 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 1021 1022 /* notify VF of need for VLAN tag stripping, and correct queue */ 1023 if (num_tcs) 1024 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 1025 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 1026 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 1027 else 1028 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 1029 1030 /* notify VF of default queue */ 1031 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 1032 1033 return 0; 1034 } 1035 1036 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 1037 { 1038 u32 i, j; 1039 u32 *out_buf = &msgbuf[1]; 1040 const u8 *reta = adapter->rss_indir_tbl; 1041 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); 1042 1043 /* Check if operation is permitted */ 1044 if (!adapter->vfinfo[vf].rss_query_enabled) 1045 return -EPERM; 1046 1047 /* verify the PF is supporting the correct API */ 1048 switch (adapter->vfinfo[vf].vf_api) { 1049 case ixgbe_mbox_api_13: 1050 case ixgbe_mbox_api_12: 1051 break; 1052 default: 1053 return -EOPNOTSUPP; 1054 } 1055 1056 /* This mailbox command is supported (required) only for 82599 and x540 1057 * VFs which support up to 4 RSS queues. Therefore we will compress the 1058 * RETA by saving only 2 bits from each entry. This way we will be able 1059 * to transfer the whole RETA in a single mailbox operation. 1060 */ 1061 for (i = 0; i < reta_size / 16; i++) { 1062 out_buf[i] = 0; 1063 for (j = 0; j < 16; j++) 1064 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); 1065 } 1066 1067 return 0; 1068 } 1069 1070 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, 1071 u32 *msgbuf, u32 vf) 1072 { 1073 u32 *rss_key = &msgbuf[1]; 1074 1075 /* Check if the operation is permitted */ 1076 if (!adapter->vfinfo[vf].rss_query_enabled) 1077 return -EPERM; 1078 1079 /* verify the PF is supporting the correct API */ 1080 switch (adapter->vfinfo[vf].vf_api) { 1081 case ixgbe_mbox_api_13: 1082 case ixgbe_mbox_api_12: 1083 break; 1084 default: 1085 return -EOPNOTSUPP; 1086 } 1087 1088 memcpy(rss_key, adapter->rss_key, sizeof(adapter->rss_key)); 1089 1090 return 0; 1091 } 1092 1093 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter, 1094 u32 *msgbuf, u32 vf) 1095 { 1096 struct ixgbe_hw *hw = &adapter->hw; 1097 int xcast_mode = msgbuf[1]; 1098 u32 vmolr, fctrl, disable, enable; 1099 1100 /* verify the PF is supporting the correct APIs */ 1101 switch (adapter->vfinfo[vf].vf_api) { 1102 case ixgbe_mbox_api_12: 1103 /* promisc introduced in 1.3 version */ 1104 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) 1105 return -EOPNOTSUPP; 1106 /* Fall threw */ 1107 case ixgbe_mbox_api_13: 1108 break; 1109 default: 1110 return -EOPNOTSUPP; 1111 } 1112 1113 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI && 1114 !adapter->vfinfo[vf].trusted) { 1115 xcast_mode = IXGBEVF_XCAST_MODE_MULTI; 1116 } 1117 1118 if (adapter->vfinfo[vf].xcast_mode == xcast_mode) 1119 goto out; 1120 1121 switch (xcast_mode) { 1122 case IXGBEVF_XCAST_MODE_NONE: 1123 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1124 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1125 enable = 0; 1126 break; 1127 case IXGBEVF_XCAST_MODE_MULTI: 1128 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1129 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE; 1130 break; 1131 case IXGBEVF_XCAST_MODE_ALLMULTI: 1132 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1133 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; 1134 break; 1135 case IXGBEVF_XCAST_MODE_PROMISC: 1136 if (hw->mac.type <= ixgbe_mac_82599EB) 1137 return -EOPNOTSUPP; 1138 1139 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 1140 if (!(fctrl & IXGBE_FCTRL_UPE)) { 1141 /* VF promisc requires PF in promisc */ 1142 e_warn(drv, 1143 "Enabling VF promisc requires PF in promisc\n"); 1144 return -EPERM; 1145 } 1146 1147 disable = 0; 1148 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1149 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1150 break; 1151 default: 1152 return -EOPNOTSUPP; 1153 } 1154 1155 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 1156 vmolr &= ~disable; 1157 vmolr |= enable; 1158 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 1159 1160 adapter->vfinfo[vf].xcast_mode = xcast_mode; 1161 1162 out: 1163 msgbuf[1] = xcast_mode; 1164 1165 return 0; 1166 } 1167 1168 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1169 { 1170 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 1171 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 1172 struct ixgbe_hw *hw = &adapter->hw; 1173 s32 retval; 1174 1175 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 1176 1177 if (retval) { 1178 pr_err("Error receiving message from VF\n"); 1179 return retval; 1180 } 1181 1182 /* this is a message we already processed, do nothing */ 1183 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 1184 return 0; 1185 1186 /* flush the ack before we write any messages back */ 1187 IXGBE_WRITE_FLUSH(hw); 1188 1189 if (msgbuf[0] == IXGBE_VF_RESET) 1190 return ixgbe_vf_reset_msg(adapter, vf); 1191 1192 /* 1193 * until the vf completes a virtual function reset it should not be 1194 * allowed to start any configuration. 1195 */ 1196 if (!adapter->vfinfo[vf].clear_to_send) { 1197 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1198 ixgbe_write_mbx(hw, msgbuf, 1, vf); 1199 return 0; 1200 } 1201 1202 switch ((msgbuf[0] & 0xFFFF)) { 1203 case IXGBE_VF_SET_MAC_ADDR: 1204 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 1205 break; 1206 case IXGBE_VF_SET_MULTICAST: 1207 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 1208 break; 1209 case IXGBE_VF_SET_VLAN: 1210 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1211 break; 1212 case IXGBE_VF_SET_LPE: 1213 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 1214 break; 1215 case IXGBE_VF_SET_MACVLAN: 1216 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1217 break; 1218 case IXGBE_VF_API_NEGOTIATE: 1219 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 1220 break; 1221 case IXGBE_VF_GET_QUEUES: 1222 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1223 break; 1224 case IXGBE_VF_GET_RETA: 1225 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); 1226 break; 1227 case IXGBE_VF_GET_RSS_KEY: 1228 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); 1229 break; 1230 case IXGBE_VF_UPDATE_XCAST_MODE: 1231 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf); 1232 break; 1233 default: 1234 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1235 retval = IXGBE_ERR_MBX; 1236 break; 1237 } 1238 1239 /* notify the VF of the results of what it sent us */ 1240 if (retval) 1241 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1242 else 1243 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1244 1245 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1246 1247 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1248 1249 return retval; 1250 } 1251 1252 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1253 { 1254 struct ixgbe_hw *hw = &adapter->hw; 1255 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1256 1257 /* if device isn't clear to send it shouldn't be reading either */ 1258 if (!adapter->vfinfo[vf].clear_to_send) 1259 ixgbe_write_mbx(hw, &msg, 1, vf); 1260 } 1261 1262 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1263 { 1264 struct ixgbe_hw *hw = &adapter->hw; 1265 u32 vf; 1266 1267 for (vf = 0; vf < adapter->num_vfs; vf++) { 1268 /* process any reset requests */ 1269 if (!ixgbe_check_for_rst(hw, vf)) 1270 ixgbe_vf_reset_event(adapter, vf); 1271 1272 /* process any messages pending */ 1273 if (!ixgbe_check_for_msg(hw, vf)) 1274 ixgbe_rcv_msg_from_vf(adapter, vf); 1275 1276 /* process any acks */ 1277 if (!ixgbe_check_for_ack(hw, vf)) 1278 ixgbe_rcv_ack_from_vf(adapter, vf); 1279 } 1280 } 1281 1282 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1283 { 1284 struct ixgbe_hw *hw = &adapter->hw; 1285 1286 /* disable transmit and receive for all vfs */ 1287 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1288 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1289 1290 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1291 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1292 } 1293 1294 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf) 1295 { 1296 struct ixgbe_hw *hw = &adapter->hw; 1297 u32 ping; 1298 1299 ping = IXGBE_PF_CONTROL_MSG; 1300 if (adapter->vfinfo[vf].clear_to_send) 1301 ping |= IXGBE_VT_MSGTYPE_CTS; 1302 ixgbe_write_mbx(hw, &ping, 1, vf); 1303 } 1304 1305 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1306 { 1307 struct ixgbe_hw *hw = &adapter->hw; 1308 u32 ping; 1309 int i; 1310 1311 for (i = 0 ; i < adapter->num_vfs; i++) { 1312 ping = IXGBE_PF_CONTROL_MSG; 1313 if (adapter->vfinfo[i].clear_to_send) 1314 ping |= IXGBE_VT_MSGTYPE_CTS; 1315 ixgbe_write_mbx(hw, &ping, 1, i); 1316 } 1317 } 1318 1319 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1320 { 1321 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1322 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 1323 return -EINVAL; 1324 adapter->vfinfo[vf].pf_set_mac = true; 1325 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 1326 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 1327 " change effective."); 1328 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1329 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 1330 " but the PF device is not up.\n"); 1331 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 1332 " attempting to use the VF device.\n"); 1333 } 1334 return ixgbe_set_vf_mac(adapter, vf, mac); 1335 } 1336 1337 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1338 u16 vlan, u8 qos) 1339 { 1340 struct ixgbe_hw *hw = &adapter->hw; 1341 int err; 1342 1343 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1344 if (err) 1345 goto out; 1346 1347 /* Revoke tagless access via VLAN 0 */ 1348 ixgbe_set_vf_vlan(adapter, false, 0, vf); 1349 1350 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1351 ixgbe_set_vmolr(hw, vf, false); 1352 1353 /* enable hide vlan on X550 */ 1354 if (hw->mac.type >= ixgbe_mac_X550) 1355 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1356 IXGBE_QDE_HIDE_VLAN); 1357 1358 adapter->vfinfo[vf].pf_vlan = vlan; 1359 adapter->vfinfo[vf].pf_qos = qos; 1360 dev_info(&adapter->pdev->dev, 1361 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1362 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1363 dev_warn(&adapter->pdev->dev, 1364 "The VF VLAN has been set, but the PF device is not up.\n"); 1365 dev_warn(&adapter->pdev->dev, 1366 "Bring the PF device up before attempting to use the VF device.\n"); 1367 } 1368 1369 out: 1370 return err; 1371 } 1372 1373 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1374 { 1375 struct ixgbe_hw *hw = &adapter->hw; 1376 int err; 1377 1378 err = ixgbe_set_vf_vlan(adapter, false, 1379 adapter->vfinfo[vf].pf_vlan, vf); 1380 /* Restore tagless access via VLAN 0 */ 1381 ixgbe_set_vf_vlan(adapter, true, 0, vf); 1382 ixgbe_clear_vmvir(adapter, vf); 1383 ixgbe_set_vmolr(hw, vf, true); 1384 1385 /* disable hide VLAN on X550 */ 1386 if (hw->mac.type >= ixgbe_mac_X550) 1387 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1388 1389 adapter->vfinfo[vf].pf_vlan = 0; 1390 adapter->vfinfo[vf].pf_qos = 0; 1391 1392 return err; 1393 } 1394 1395 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, 1396 u8 qos, __be16 vlan_proto) 1397 { 1398 int err = 0; 1399 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1400 1401 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1402 return -EINVAL; 1403 if (vlan_proto != htons(ETH_P_8021Q)) 1404 return -EPROTONOSUPPORT; 1405 if (vlan || qos) { 1406 /* Check if there is already a port VLAN set, if so 1407 * we have to delete the old one first before we 1408 * can set the new one. The usage model had 1409 * previously assumed the user would delete the 1410 * old port VLAN before setting a new one but this 1411 * is not necessarily the case. 1412 */ 1413 if (adapter->vfinfo[vf].pf_vlan) 1414 err = ixgbe_disable_port_vlan(adapter, vf); 1415 if (err) 1416 goto out; 1417 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1418 } else { 1419 err = ixgbe_disable_port_vlan(adapter, vf); 1420 } 1421 1422 out: 1423 return err; 1424 } 1425 1426 int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1427 { 1428 switch (adapter->link_speed) { 1429 case IXGBE_LINK_SPEED_100_FULL: 1430 return 100; 1431 case IXGBE_LINK_SPEED_1GB_FULL: 1432 return 1000; 1433 case IXGBE_LINK_SPEED_10GB_FULL: 1434 return 10000; 1435 default: 1436 return 0; 1437 } 1438 } 1439 1440 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1441 { 1442 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1443 struct ixgbe_hw *hw = &adapter->hw; 1444 u32 bcnrc_val = 0; 1445 u16 queue, queues_per_pool; 1446 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1447 1448 if (tx_rate) { 1449 /* start with base link speed value */ 1450 bcnrc_val = adapter->vf_rate_link_speed; 1451 1452 /* Calculate the rate factor values to set */ 1453 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1454 bcnrc_val /= tx_rate; 1455 1456 /* clear everything but the rate factor */ 1457 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1458 IXGBE_RTTBCNRC_RF_DEC_MASK; 1459 1460 /* enable the rate scheduler */ 1461 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1462 } 1463 1464 /* 1465 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1466 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1467 * and 0x004 otherwise. 1468 */ 1469 switch (hw->mac.type) { 1470 case ixgbe_mac_82599EB: 1471 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1472 break; 1473 case ixgbe_mac_X540: 1474 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1475 break; 1476 default: 1477 break; 1478 } 1479 1480 /* determine how many queues per pool based on VMDq mask */ 1481 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1482 1483 /* write value for all Tx queues belonging to VF */ 1484 for (queue = 0; queue < queues_per_pool; queue++) { 1485 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1486 1487 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1488 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1489 } 1490 } 1491 1492 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1493 { 1494 int i; 1495 1496 /* VF Tx rate limit was not set */ 1497 if (!adapter->vf_rate_link_speed) 1498 return; 1499 1500 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1501 adapter->vf_rate_link_speed = 0; 1502 dev_info(&adapter->pdev->dev, 1503 "Link speed has been changed. VF Transmit rate is disabled\n"); 1504 } 1505 1506 for (i = 0; i < adapter->num_vfs; i++) { 1507 if (!adapter->vf_rate_link_speed) 1508 adapter->vfinfo[i].tx_rate = 0; 1509 1510 ixgbe_set_vf_rate_limit(adapter, i); 1511 } 1512 } 1513 1514 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1515 int max_tx_rate) 1516 { 1517 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1518 int link_speed; 1519 1520 /* verify VF is active */ 1521 if (vf >= adapter->num_vfs) 1522 return -EINVAL; 1523 1524 /* verify link is up */ 1525 if (!adapter->link_up) 1526 return -EINVAL; 1527 1528 /* verify we are linked at 10Gbps */ 1529 link_speed = ixgbe_link_mbps(adapter); 1530 if (link_speed != 10000) 1531 return -EINVAL; 1532 1533 if (min_tx_rate) 1534 return -EINVAL; 1535 1536 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1537 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1538 return -EINVAL; 1539 1540 /* store values */ 1541 adapter->vf_rate_link_speed = link_speed; 1542 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1543 1544 /* update hardware configuration */ 1545 ixgbe_set_vf_rate_limit(adapter, vf); 1546 1547 return 0; 1548 } 1549 1550 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1551 { 1552 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1553 struct ixgbe_hw *hw = &adapter->hw; 1554 1555 if (vf >= adapter->num_vfs) 1556 return -EINVAL; 1557 1558 adapter->vfinfo[vf].spoofchk_enabled = setting; 1559 1560 /* configure MAC spoofing */ 1561 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf); 1562 1563 /* configure VLAN spoofing */ 1564 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf); 1565 1566 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be 1567 * calling set_ethertype_anti_spoofing for each VF in loop below 1568 */ 1569 if (hw->mac.ops.set_ethertype_anti_spoofing) { 1570 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP), 1571 (IXGBE_ETQF_FILTER_EN | 1572 IXGBE_ETQF_TX_ANTISPOOF | 1573 IXGBE_ETH_P_LLDP)); 1574 1575 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC), 1576 (IXGBE_ETQF_FILTER_EN | 1577 IXGBE_ETQF_TX_ANTISPOOF | 1578 ETH_P_PAUSE)); 1579 1580 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf); 1581 } 1582 1583 return 0; 1584 } 1585 1586 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, 1587 bool setting) 1588 { 1589 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1590 1591 /* This operation is currently supported only for 82599 and x540 1592 * devices. 1593 */ 1594 if (adapter->hw.mac.type < ixgbe_mac_82599EB || 1595 adapter->hw.mac.type >= ixgbe_mac_X550) 1596 return -EOPNOTSUPP; 1597 1598 if (vf >= adapter->num_vfs) 1599 return -EINVAL; 1600 1601 adapter->vfinfo[vf].rss_query_enabled = setting; 1602 1603 return 0; 1604 } 1605 1606 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) 1607 { 1608 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1609 1610 if (vf >= adapter->num_vfs) 1611 return -EINVAL; 1612 1613 /* nothing to do */ 1614 if (adapter->vfinfo[vf].trusted == setting) 1615 return 0; 1616 1617 adapter->vfinfo[vf].trusted = setting; 1618 1619 /* reset VF to reconfigure features */ 1620 adapter->vfinfo[vf].clear_to_send = false; 1621 ixgbe_ping_vf(adapter, vf); 1622 1623 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not "); 1624 1625 return 0; 1626 } 1627 1628 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1629 int vf, struct ifla_vf_info *ivi) 1630 { 1631 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1632 if (vf >= adapter->num_vfs) 1633 return -EINVAL; 1634 ivi->vf = vf; 1635 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1636 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1637 ivi->min_tx_rate = 0; 1638 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1639 ivi->qos = adapter->vfinfo[vf].pf_qos; 1640 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1641 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; 1642 ivi->trusted = adapter->vfinfo[vf].trusted; 1643 return 0; 1644 } 1645