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