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 inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter, 50 unsigned int num_vfs) 51 { 52 struct ixgbe_hw *hw = &adapter->hw; 53 struct vf_macvlans *mv_list; 54 int num_vf_macvlans, i; 55 56 num_vf_macvlans = hw->mac.num_rar_entries - 57 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs); 58 if (!num_vf_macvlans) 59 return; 60 61 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans), 62 GFP_KERNEL); 63 if (mv_list) { 64 /* Initialize list of VF macvlans */ 65 INIT_LIST_HEAD(&adapter->vf_mvs.l); 66 for (i = 0; i < num_vf_macvlans; i++) { 67 mv_list[i].vf = -1; 68 mv_list[i].free = true; 69 list_add(&mv_list[i].l, &adapter->vf_mvs.l); 70 } 71 adapter->mv_list = mv_list; 72 } 73 } 74 75 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter, 76 unsigned int num_vfs) 77 { 78 struct ixgbe_hw *hw = &adapter->hw; 79 int i; 80 81 /* Enable VMDq flag so device will be set in VM mode */ 82 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED | 83 IXGBE_FLAG_VMDQ_ENABLED; 84 85 /* Allocate memory for per VF control structures */ 86 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage), 87 GFP_KERNEL); 88 if (!adapter->vfinfo) 89 return -ENOMEM; 90 91 adapter->num_vfs = num_vfs; 92 93 ixgbe_alloc_vf_macvlans(adapter, num_vfs); 94 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs; 95 96 /* Initialize default switching mode VEB */ 97 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 98 adapter->bridge_mode = BRIDGE_MODE_VEB; 99 100 /* limit trafffic classes based on VFs enabled */ 101 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) { 102 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 103 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 104 } else if (num_vfs < 32) { 105 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 106 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 107 } else { 108 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 109 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 110 } 111 112 /* Disable RSC when in SR-IOV mode */ 113 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 114 IXGBE_FLAG2_RSC_ENABLED); 115 116 for (i = 0; i < num_vfs; i++) { 117 /* enable spoof checking for all VFs */ 118 adapter->vfinfo[i].spoofchk_enabled = true; 119 120 /* We support VF RSS querying only for 82599 and x540 121 * devices at the moment. These devices share RSS 122 * indirection table and RSS hash key with PF therefore 123 * we want to disable the querying by default. 124 */ 125 adapter->vfinfo[i].rss_query_enabled = 0; 126 127 /* Untrust all VFs */ 128 adapter->vfinfo[i].trusted = false; 129 130 /* set the default xcast mode */ 131 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE; 132 } 133 134 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs); 135 return 0; 136 } 137 138 /** 139 * ixgbe_get_vfs - Find and take references to all vf devices 140 * @adapter: Pointer to adapter struct 141 */ 142 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter) 143 { 144 struct pci_dev *pdev = adapter->pdev; 145 u16 vendor = pdev->vendor; 146 struct pci_dev *vfdev; 147 int vf = 0; 148 u16 vf_id; 149 int pos; 150 151 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 152 if (!pos) 153 return; 154 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id); 155 156 vfdev = pci_get_device(vendor, vf_id, NULL); 157 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) { 158 if (!vfdev->is_virtfn) 159 continue; 160 if (vfdev->physfn != pdev) 161 continue; 162 if (vf >= adapter->num_vfs) 163 continue; 164 pci_dev_get(vfdev); 165 adapter->vfinfo[vf].vfdev = vfdev; 166 ++vf; 167 } 168 } 169 170 /* Note this function is called when the user wants to enable SR-IOV 171 * VFs using the now deprecated module parameter 172 */ 173 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs) 174 { 175 int pre_existing_vfs = 0; 176 unsigned int num_vfs; 177 178 pre_existing_vfs = pci_num_vf(adapter->pdev); 179 if (!pre_existing_vfs && !max_vfs) 180 return; 181 182 /* If there are pre-existing VFs then we have to force 183 * use of that many - over ride any module parameter value. 184 * This may result from the user unloading the PF driver 185 * while VFs were assigned to guest VMs or because the VFs 186 * have been created via the new PCI SR-IOV sysfs interface. 187 */ 188 if (pre_existing_vfs) { 189 num_vfs = pre_existing_vfs; 190 dev_warn(&adapter->pdev->dev, 191 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); 192 } else { 193 int err; 194 /* 195 * The 82599 supports up to 64 VFs per physical function 196 * but this implementation limits allocation to 63 so that 197 * basic networking resources are still available to the 198 * physical function. If the user requests greater than 199 * 63 VFs then it is an error - reset to default of zero. 200 */ 201 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT); 202 203 err = pci_enable_sriov(adapter->pdev, num_vfs); 204 if (err) { 205 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 206 return; 207 } 208 } 209 210 if (!__ixgbe_enable_sriov(adapter, num_vfs)) { 211 ixgbe_get_vfs(adapter); 212 return; 213 } 214 215 /* If we have gotten to this point then there is no memory available 216 * to manage the VF devices - print message and bail. 217 */ 218 e_err(probe, "Unable to allocate memory for VF Data Storage - " 219 "SRIOV disabled\n"); 220 ixgbe_disable_sriov(adapter); 221 } 222 223 #endif /* #ifdef CONFIG_PCI_IOV */ 224 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 225 { 226 unsigned int num_vfs = adapter->num_vfs, vf; 227 int rss; 228 229 /* set num VFs to 0 to prevent access to vfinfo */ 230 adapter->num_vfs = 0; 231 232 /* put the reference to all of the vf devices */ 233 for (vf = 0; vf < num_vfs; ++vf) { 234 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 235 236 if (!vfdev) 237 continue; 238 adapter->vfinfo[vf].vfdev = NULL; 239 pci_dev_put(vfdev); 240 } 241 242 /* free VF control structures */ 243 kfree(adapter->vfinfo); 244 adapter->vfinfo = NULL; 245 246 /* free macvlan list */ 247 kfree(adapter->mv_list); 248 adapter->mv_list = NULL; 249 250 /* if SR-IOV is already disabled then there is nothing to do */ 251 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 252 return 0; 253 254 #ifdef CONFIG_PCI_IOV 255 /* 256 * If our VFs are assigned we cannot shut down SR-IOV 257 * without causing issues, so just leave the hardware 258 * available but disabled 259 */ 260 if (pci_vfs_assigned(adapter->pdev)) { 261 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 262 return -EPERM; 263 } 264 /* disable iov and allow time for transactions to clear */ 265 pci_disable_sriov(adapter->pdev); 266 #endif 267 268 /* Disable VMDq flag so device will be set in VM mode */ 269 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) { 270 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 271 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 272 rss = min_t(int, ixgbe_max_rss_indices(adapter), 273 num_online_cpus()); 274 } else { 275 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 276 } 277 278 adapter->ring_feature[RING_F_VMDQ].offset = 0; 279 adapter->ring_feature[RING_F_RSS].limit = rss; 280 281 /* take a breather then clean up driver data */ 282 msleep(100); 283 return 0; 284 } 285 286 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 287 { 288 #ifdef CONFIG_PCI_IOV 289 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 290 int pre_existing_vfs = pci_num_vf(dev); 291 int err = 0, num_rx_pools, i, limit; 292 u8 num_tc; 293 294 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 295 err = ixgbe_disable_sriov(adapter); 296 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 297 return num_vfs; 298 299 if (err) 300 return err; 301 302 /* While the SR-IOV capability structure reports total VFs to be 64, 303 * we limit the actual number allocated as below based on two factors. 304 * Num_TCs MAX_VFs 305 * 1 63 306 * <=4 31 307 * >4 15 308 * First, we reserve some transmit/receive resources for the PF. 309 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 310 * account for this, so that we don't accidentally allocate more VFs 311 * than we have available pools. The PCI bus driver already checks for 312 * other values out of range. 313 */ 314 num_tc = adapter->hw_tcs; 315 num_rx_pools = bitmap_weight(adapter->fwd_bitmask, 316 adapter->num_rx_pools); 317 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC : 318 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC; 319 320 if (num_vfs > (limit - num_rx_pools)) { 321 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n", 322 num_tc, num_rx_pools - 1, limit - num_rx_pools); 323 return -EPERM; 324 } 325 326 err = __ixgbe_enable_sriov(adapter, num_vfs); 327 if (err) 328 return err; 329 330 for (i = 0; i < num_vfs; i++) 331 ixgbe_vf_configuration(dev, (i | 0x10000000)); 332 333 /* reset before enabling SRIOV to avoid mailbox issues */ 334 ixgbe_sriov_reinit(adapter); 335 336 err = pci_enable_sriov(dev, num_vfs); 337 if (err) { 338 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 339 return err; 340 } 341 ixgbe_get_vfs(adapter); 342 343 return num_vfs; 344 #else 345 return 0; 346 #endif 347 } 348 349 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 350 { 351 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 352 int err; 353 #ifdef CONFIG_PCI_IOV 354 u32 current_flags = adapter->flags; 355 int prev_num_vf = pci_num_vf(dev); 356 #endif 357 358 err = ixgbe_disable_sriov(adapter); 359 360 /* Only reinit if no error and state changed */ 361 #ifdef CONFIG_PCI_IOV 362 if (!err && (current_flags != adapter->flags || 363 prev_num_vf != pci_num_vf(dev))) 364 ixgbe_sriov_reinit(adapter); 365 #endif 366 367 return err; 368 } 369 370 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 371 { 372 if (num_vfs == 0) 373 return ixgbe_pci_sriov_disable(dev); 374 else 375 return ixgbe_pci_sriov_enable(dev, num_vfs); 376 } 377 378 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 379 u32 *msgbuf, u32 vf) 380 { 381 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 382 >> IXGBE_VT_MSGINFO_SHIFT; 383 u16 *hash_list = (u16 *)&msgbuf[1]; 384 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 385 struct ixgbe_hw *hw = &adapter->hw; 386 int i; 387 u32 vector_bit; 388 u32 vector_reg; 389 u32 mta_reg; 390 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 391 392 /* only so many hash values supported */ 393 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 394 395 /* 396 * salt away the number of multi cast addresses assigned 397 * to this VF for later use to restore when the PF multi cast 398 * list changes 399 */ 400 vfinfo->num_vf_mc_hashes = entries; 401 402 /* 403 * VFs are limited to using the MTA hash table for their multicast 404 * addresses 405 */ 406 for (i = 0; i < entries; i++) { 407 vfinfo->vf_mc_hashes[i] = hash_list[i]; 408 } 409 410 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 411 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 412 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 413 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 414 mta_reg |= BIT(vector_bit); 415 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 416 } 417 vmolr |= IXGBE_VMOLR_ROMPE; 418 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 419 420 return 0; 421 } 422 423 #ifdef CONFIG_PCI_IOV 424 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 425 { 426 struct ixgbe_hw *hw = &adapter->hw; 427 struct vf_data_storage *vfinfo; 428 int i, j; 429 u32 vector_bit; 430 u32 vector_reg; 431 u32 mta_reg; 432 433 for (i = 0; i < adapter->num_vfs; i++) { 434 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 435 vfinfo = &adapter->vfinfo[i]; 436 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 437 hw->addr_ctrl.mta_in_use++; 438 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 439 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 440 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 441 mta_reg |= BIT(vector_bit); 442 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 443 } 444 445 if (vfinfo->num_vf_mc_hashes) 446 vmolr |= IXGBE_VMOLR_ROMPE; 447 else 448 vmolr &= ~IXGBE_VMOLR_ROMPE; 449 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 450 } 451 452 /* Restore any VF macvlans */ 453 ixgbe_full_sync_mac_table(adapter); 454 } 455 #endif 456 457 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 458 u32 vf) 459 { 460 struct ixgbe_hw *hw = &adapter->hw; 461 int err; 462 463 /* If VLAN overlaps with one the PF is currently monitoring make 464 * sure that we are able to allocate a VLVF entry. This may be 465 * redundant but it guarantees PF will maintain visibility to 466 * the VLAN. 467 */ 468 if (add && test_bit(vid, adapter->active_vlans)) { 469 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false); 470 if (err) 471 return err; 472 } 473 474 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false); 475 476 if (add && !err) 477 return err; 478 479 /* If we failed to add the VF VLAN or we are removing the VF VLAN 480 * we may need to drop the PF pool bit in order to allow us to free 481 * up the VLVF resources. 482 */ 483 if (test_bit(vid, adapter->active_vlans) || 484 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 485 ixgbe_update_pf_promisc_vlvf(adapter, vid); 486 487 return err; 488 } 489 490 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 491 { 492 struct ixgbe_hw *hw = &adapter->hw; 493 int max_frame = msgbuf[1]; 494 u32 max_frs; 495 496 /* 497 * For 82599EB we have to keep all PFs and VFs operating with 498 * the same max_frame value in order to avoid sending an oversize 499 * frame to a VF. In order to guarantee this is handled correctly 500 * for all cases we have several special exceptions to take into 501 * account before we can enable the VF for receive 502 */ 503 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 504 struct net_device *dev = adapter->netdev; 505 int pf_max_frame = dev->mtu + ETH_HLEN; 506 u32 reg_offset, vf_shift, vfre; 507 s32 err = 0; 508 509 #ifdef CONFIG_FCOE 510 if (dev->features & NETIF_F_FCOE_MTU) 511 pf_max_frame = max_t(int, pf_max_frame, 512 IXGBE_FCOE_JUMBO_FRAME_SIZE); 513 514 #endif /* CONFIG_FCOE */ 515 switch (adapter->vfinfo[vf].vf_api) { 516 case ixgbe_mbox_api_11: 517 case ixgbe_mbox_api_12: 518 case ixgbe_mbox_api_13: 519 /* Version 1.1 supports jumbo frames on VFs if PF has 520 * jumbo frames enabled which means legacy VFs are 521 * disabled 522 */ 523 if (pf_max_frame > ETH_FRAME_LEN) 524 break; 525 /* fall through */ 526 default: 527 /* If the PF or VF are running w/ jumbo frames enabled 528 * we need to shut down the VF Rx path as we cannot 529 * support jumbo frames on legacy VFs 530 */ 531 if ((pf_max_frame > ETH_FRAME_LEN) || 532 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 533 err = -EINVAL; 534 break; 535 } 536 537 /* determine VF receive enable location */ 538 vf_shift = vf % 32; 539 reg_offset = vf / 32; 540 541 /* enable or disable receive depending on error */ 542 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 543 if (err) 544 vfre &= ~BIT(vf_shift); 545 else 546 vfre |= BIT(vf_shift); 547 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 548 549 if (err) { 550 e_err(drv, "VF max_frame %d out of range\n", max_frame); 551 return err; 552 } 553 } 554 555 /* MTU < 68 is an error and causes problems on some kernels */ 556 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 557 e_err(drv, "VF max_frame %d out of range\n", max_frame); 558 return -EINVAL; 559 } 560 561 /* pull current max frame size from hardware */ 562 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 563 max_frs &= IXGBE_MHADD_MFS_MASK; 564 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 565 566 if (max_frs < max_frame) { 567 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 568 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 569 } 570 571 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 572 573 return 0; 574 } 575 576 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 577 { 578 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 579 vmolr |= IXGBE_VMOLR_BAM; 580 if (aupe) 581 vmolr |= IXGBE_VMOLR_AUPE; 582 else 583 vmolr &= ~IXGBE_VMOLR_AUPE; 584 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 585 } 586 587 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 588 { 589 struct ixgbe_hw *hw = &adapter->hw; 590 591 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 592 } 593 594 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf) 595 { 596 struct ixgbe_hw *hw = &adapter->hw; 597 u32 vlvfb_mask, pool_mask, i; 598 599 /* create mask for VF and other pools */ 600 pool_mask = ~BIT(VMDQ_P(0) % 32); 601 vlvfb_mask = BIT(vf % 32); 602 603 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */ 604 for (i = IXGBE_VLVF_ENTRIES; i--;) { 605 u32 bits[2], vlvfb, vid, vfta, vlvf; 606 u32 word = i * 2 + vf / 32; 607 u32 mask; 608 609 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 610 611 /* if our bit isn't set we can skip it */ 612 if (!(vlvfb & vlvfb_mask)) 613 continue; 614 615 /* clear our bit from vlvfb */ 616 vlvfb ^= vlvfb_mask; 617 618 /* create 64b mask to chedk to see if we should clear VLVF */ 619 bits[word % 2] = vlvfb; 620 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1)); 621 622 /* if other pools are present, just remove ourselves */ 623 if (bits[(VMDQ_P(0) / 32) ^ 1] || 624 (bits[VMDQ_P(0) / 32] & pool_mask)) 625 goto update_vlvfb; 626 627 /* if PF is present, leave VFTA */ 628 if (bits[0] || bits[1]) 629 goto update_vlvf; 630 631 /* if we cannot determine VLAN just remove ourselves */ 632 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 633 if (!vlvf) 634 goto update_vlvfb; 635 636 vid = vlvf & VLAN_VID_MASK; 637 mask = BIT(vid % 32); 638 639 /* clear bit from VFTA */ 640 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32)); 641 if (vfta & mask) 642 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask); 643 update_vlvf: 644 /* clear POOL selection enable */ 645 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0); 646 647 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 648 vlvfb = 0; 649 update_vlvfb: 650 /* clear pool bits */ 651 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb); 652 } 653 } 654 655 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 656 int vf, int index, unsigned char *mac_addr) 657 { 658 struct vf_macvlans *entry; 659 struct list_head *pos; 660 int retval = 0; 661 662 if (index <= 1) { 663 list_for_each(pos, &adapter->vf_mvs.l) { 664 entry = list_entry(pos, struct vf_macvlans, l); 665 if (entry->vf == vf) { 666 entry->vf = -1; 667 entry->free = true; 668 entry->is_macvlan = false; 669 ixgbe_del_mac_filter(adapter, 670 entry->vf_macvlan, vf); 671 } 672 } 673 } 674 675 /* 676 * If index was zero then we were asked to clear the uc list 677 * for the VF. We're done. 678 */ 679 if (!index) 680 return 0; 681 682 entry = NULL; 683 684 list_for_each(pos, &adapter->vf_mvs.l) { 685 entry = list_entry(pos, struct vf_macvlans, l); 686 if (entry->free) 687 break; 688 } 689 690 /* 691 * If we traversed the entire list and didn't find a free entry 692 * then we're out of space on the RAR table. Also entry may 693 * be NULL because the original memory allocation for the list 694 * failed, which is not fatal but does mean we can't support 695 * VF requests for MACVLAN because we couldn't allocate 696 * memory for the list management required. 697 */ 698 if (!entry || !entry->free) 699 return -ENOSPC; 700 701 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 702 if (retval < 0) 703 return retval; 704 705 entry->free = false; 706 entry->is_macvlan = true; 707 entry->vf = vf; 708 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 709 710 return 0; 711 } 712 713 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 714 { 715 struct ixgbe_hw *hw = &adapter->hw; 716 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 717 u8 num_tcs = adapter->hw_tcs; 718 719 /* remove VLAN filters beloning to this VF */ 720 ixgbe_clear_vf_vlans(adapter, vf); 721 722 /* add back PF assigned VLAN or VLAN 0 */ 723 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 724 725 /* reset offloads to defaults */ 726 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 727 728 /* set outgoing tags for VFs */ 729 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 730 ixgbe_clear_vmvir(adapter, vf); 731 } else { 732 if (vfinfo->pf_qos || !num_tcs) 733 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 734 vfinfo->pf_qos, vf); 735 else 736 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 737 adapter->default_up, vf); 738 739 if (vfinfo->spoofchk_enabled) 740 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 741 } 742 743 /* reset multicast table array for vf */ 744 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 745 746 /* Flush and reset the mta with the new values */ 747 ixgbe_set_rx_mode(adapter->netdev); 748 749 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 750 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL); 751 752 /* reset VF api back to unknown */ 753 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 754 } 755 756 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 757 int vf, unsigned char *mac_addr) 758 { 759 s32 retval; 760 761 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 762 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 763 if (retval >= 0) 764 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 765 ETH_ALEN); 766 else 767 memset(adapter->vfinfo[vf].vf_mac_addresses, 0, ETH_ALEN); 768 769 return retval; 770 } 771 772 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 773 { 774 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 775 unsigned int vfn = (event_mask & 0x3f); 776 777 bool enable = ((event_mask & 0x10000000U) != 0); 778 779 if (enable) 780 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 781 782 return 0; 783 } 784 785 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 786 u32 qde) 787 { 788 struct ixgbe_hw *hw = &adapter->hw; 789 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 790 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 791 int i; 792 793 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 794 u32 reg; 795 796 /* flush previous write */ 797 IXGBE_WRITE_FLUSH(hw); 798 799 /* indicate to hardware that we want to set drop enable */ 800 reg = IXGBE_QDE_WRITE | qde; 801 reg |= i << IXGBE_QDE_IDX_SHIFT; 802 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 803 } 804 } 805 806 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 807 { 808 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 809 struct ixgbe_hw *hw = &adapter->hw; 810 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 811 u32 reg, reg_offset, vf_shift; 812 u32 msgbuf[4] = {0, 0, 0, 0}; 813 u8 *addr = (u8 *)(&msgbuf[1]); 814 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 815 int i; 816 817 e_info(probe, "VF Reset msg received from vf %d\n", vf); 818 819 /* reset the filters for the device */ 820 ixgbe_vf_reset_event(adapter, vf); 821 822 /* set vf mac address */ 823 if (!is_zero_ether_addr(vf_mac)) 824 ixgbe_set_vf_mac(adapter, vf, vf_mac); 825 826 vf_shift = vf % 32; 827 reg_offset = vf / 32; 828 829 /* enable transmit for vf */ 830 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 831 reg |= BIT(vf_shift); 832 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 833 834 /* force drop enable for all VF Rx queues */ 835 reg = IXGBE_QDE_ENABLE; 836 if (adapter->vfinfo[vf].pf_vlan) 837 reg |= IXGBE_QDE_HIDE_VLAN; 838 839 ixgbe_write_qde(adapter, vf, reg); 840 841 /* enable receive for vf */ 842 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 843 reg |= BIT(vf_shift); 844 /* 845 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 846 * For more info take a look at ixgbe_set_vf_lpe 847 */ 848 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 849 struct net_device *dev = adapter->netdev; 850 int pf_max_frame = dev->mtu + ETH_HLEN; 851 852 #ifdef CONFIG_FCOE 853 if (dev->features & NETIF_F_FCOE_MTU) 854 pf_max_frame = max_t(int, pf_max_frame, 855 IXGBE_FCOE_JUMBO_FRAME_SIZE); 856 857 #endif /* CONFIG_FCOE */ 858 if (pf_max_frame > ETH_FRAME_LEN) 859 reg &= ~BIT(vf_shift); 860 } 861 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 862 863 /* enable VF mailbox for further messages */ 864 adapter->vfinfo[vf].clear_to_send = true; 865 866 /* Enable counting of spoofed packets in the SSVPC register */ 867 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 868 reg |= BIT(vf_shift); 869 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 870 871 /* 872 * Reset the VFs TDWBAL and TDWBAH registers 873 * which are not cleared by an FLR 874 */ 875 for (i = 0; i < q_per_pool; i++) { 876 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 877 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 878 } 879 880 /* reply to reset with ack and vf mac address */ 881 msgbuf[0] = IXGBE_VF_RESET; 882 if (!is_zero_ether_addr(vf_mac)) { 883 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 884 memcpy(addr, vf_mac, ETH_ALEN); 885 } else { 886 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 887 dev_warn(&adapter->pdev->dev, 888 "VF %d has no MAC address assigned, you may have to assign one manually\n", 889 vf); 890 } 891 892 /* 893 * Piggyback the multicast filter type so VF can compute the 894 * correct vectors 895 */ 896 msgbuf[3] = hw->mac.mc_filter_type; 897 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 898 899 return 0; 900 } 901 902 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 903 u32 *msgbuf, u32 vf) 904 { 905 u8 *new_mac = ((u8 *)(&msgbuf[1])); 906 907 if (!is_valid_ether_addr(new_mac)) { 908 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 909 return -1; 910 } 911 912 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 913 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 914 e_warn(drv, 915 "VF %d attempted to override administratively set MAC address\n" 916 "Reload the VF driver to resume operations\n", 917 vf); 918 return -1; 919 } 920 921 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 922 } 923 924 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 925 u32 *msgbuf, u32 vf) 926 { 927 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 928 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 929 u8 tcs = adapter->hw_tcs; 930 931 if (adapter->vfinfo[vf].pf_vlan || tcs) { 932 e_warn(drv, 933 "VF %d attempted to override administratively set VLAN configuration\n" 934 "Reload the VF driver to resume operations\n", 935 vf); 936 return -1; 937 } 938 939 /* VLAN 0 is a special case, don't allow it to be removed */ 940 if (!vid && !add) 941 return 0; 942 943 return ixgbe_set_vf_vlan(adapter, add, vid, vf); 944 } 945 946 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 947 u32 *msgbuf, u32 vf) 948 { 949 u8 *new_mac = ((u8 *)(&msgbuf[1])); 950 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 951 IXGBE_VT_MSGINFO_SHIFT; 952 int err; 953 954 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 955 index > 0) { 956 e_warn(drv, 957 "VF %d requested MACVLAN filter but is administratively denied\n", 958 vf); 959 return -1; 960 } 961 962 /* An non-zero index indicates the VF is setting a filter */ 963 if (index) { 964 if (!is_valid_ether_addr(new_mac)) { 965 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 966 return -1; 967 } 968 969 /* 970 * If the VF is allowed to set MAC filters then turn off 971 * anti-spoofing to avoid false positives. 972 */ 973 if (adapter->vfinfo[vf].spoofchk_enabled) { 974 struct ixgbe_hw *hw = &adapter->hw; 975 976 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf); 977 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 978 } 979 } 980 981 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 982 if (err == -ENOSPC) 983 e_warn(drv, 984 "VF %d has requested a MACVLAN filter but there is no space for it\n", 985 vf); 986 987 return err < 0; 988 } 989 990 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 991 u32 *msgbuf, u32 vf) 992 { 993 int api = msgbuf[1]; 994 995 switch (api) { 996 case ixgbe_mbox_api_10: 997 case ixgbe_mbox_api_11: 998 case ixgbe_mbox_api_12: 999 case ixgbe_mbox_api_13: 1000 adapter->vfinfo[vf].vf_api = api; 1001 return 0; 1002 default: 1003 break; 1004 } 1005 1006 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 1007 1008 return -1; 1009 } 1010 1011 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 1012 u32 *msgbuf, u32 vf) 1013 { 1014 struct net_device *dev = adapter->netdev; 1015 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1016 unsigned int default_tc = 0; 1017 u8 num_tcs = adapter->hw_tcs; 1018 1019 /* verify the PF is supporting the correct APIs */ 1020 switch (adapter->vfinfo[vf].vf_api) { 1021 case ixgbe_mbox_api_20: 1022 case ixgbe_mbox_api_11: 1023 case ixgbe_mbox_api_12: 1024 case ixgbe_mbox_api_13: 1025 break; 1026 default: 1027 return -1; 1028 } 1029 1030 /* only allow 1 Tx queue for bandwidth limiting */ 1031 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1032 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1033 1034 /* if TCs > 1 determine which TC belongs to default user priority */ 1035 if (num_tcs > 1) 1036 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 1037 1038 /* notify VF of need for VLAN tag stripping, and correct queue */ 1039 if (num_tcs) 1040 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 1041 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 1042 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 1043 else 1044 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 1045 1046 /* notify VF of default queue */ 1047 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 1048 1049 return 0; 1050 } 1051 1052 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 1053 { 1054 u32 i, j; 1055 u32 *out_buf = &msgbuf[1]; 1056 const u8 *reta = adapter->rss_indir_tbl; 1057 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); 1058 1059 /* Check if operation is permitted */ 1060 if (!adapter->vfinfo[vf].rss_query_enabled) 1061 return -EPERM; 1062 1063 /* verify the PF is supporting the correct API */ 1064 switch (adapter->vfinfo[vf].vf_api) { 1065 case ixgbe_mbox_api_13: 1066 case ixgbe_mbox_api_12: 1067 break; 1068 default: 1069 return -EOPNOTSUPP; 1070 } 1071 1072 /* This mailbox command is supported (required) only for 82599 and x540 1073 * VFs which support up to 4 RSS queues. Therefore we will compress the 1074 * RETA by saving only 2 bits from each entry. This way we will be able 1075 * to transfer the whole RETA in a single mailbox operation. 1076 */ 1077 for (i = 0; i < reta_size / 16; i++) { 1078 out_buf[i] = 0; 1079 for (j = 0; j < 16; j++) 1080 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); 1081 } 1082 1083 return 0; 1084 } 1085 1086 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, 1087 u32 *msgbuf, u32 vf) 1088 { 1089 u32 *rss_key = &msgbuf[1]; 1090 1091 /* Check if the operation is permitted */ 1092 if (!adapter->vfinfo[vf].rss_query_enabled) 1093 return -EPERM; 1094 1095 /* verify the PF is supporting the correct API */ 1096 switch (adapter->vfinfo[vf].vf_api) { 1097 case ixgbe_mbox_api_13: 1098 case ixgbe_mbox_api_12: 1099 break; 1100 default: 1101 return -EOPNOTSUPP; 1102 } 1103 1104 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE); 1105 1106 return 0; 1107 } 1108 1109 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter, 1110 u32 *msgbuf, u32 vf) 1111 { 1112 struct ixgbe_hw *hw = &adapter->hw; 1113 int xcast_mode = msgbuf[1]; 1114 u32 vmolr, fctrl, disable, enable; 1115 1116 /* verify the PF is supporting the correct APIs */ 1117 switch (adapter->vfinfo[vf].vf_api) { 1118 case ixgbe_mbox_api_12: 1119 /* promisc introduced in 1.3 version */ 1120 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) 1121 return -EOPNOTSUPP; 1122 /* Fall threw */ 1123 case ixgbe_mbox_api_13: 1124 break; 1125 default: 1126 return -EOPNOTSUPP; 1127 } 1128 1129 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI && 1130 !adapter->vfinfo[vf].trusted) { 1131 xcast_mode = IXGBEVF_XCAST_MODE_MULTI; 1132 } 1133 1134 if (adapter->vfinfo[vf].xcast_mode == xcast_mode) 1135 goto out; 1136 1137 switch (xcast_mode) { 1138 case IXGBEVF_XCAST_MODE_NONE: 1139 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1140 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1141 enable = 0; 1142 break; 1143 case IXGBEVF_XCAST_MODE_MULTI: 1144 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1145 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE; 1146 break; 1147 case IXGBEVF_XCAST_MODE_ALLMULTI: 1148 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1149 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; 1150 break; 1151 case IXGBEVF_XCAST_MODE_PROMISC: 1152 if (hw->mac.type <= ixgbe_mac_82599EB) 1153 return -EOPNOTSUPP; 1154 1155 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 1156 if (!(fctrl & IXGBE_FCTRL_UPE)) { 1157 /* VF promisc requires PF in promisc */ 1158 e_warn(drv, 1159 "Enabling VF promisc requires PF in promisc\n"); 1160 return -EPERM; 1161 } 1162 1163 disable = 0; 1164 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1165 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1166 break; 1167 default: 1168 return -EOPNOTSUPP; 1169 } 1170 1171 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 1172 vmolr &= ~disable; 1173 vmolr |= enable; 1174 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 1175 1176 adapter->vfinfo[vf].xcast_mode = xcast_mode; 1177 1178 out: 1179 msgbuf[1] = xcast_mode; 1180 1181 return 0; 1182 } 1183 1184 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1185 { 1186 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 1187 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 1188 struct ixgbe_hw *hw = &adapter->hw; 1189 s32 retval; 1190 1191 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 1192 1193 if (retval) { 1194 pr_err("Error receiving message from VF\n"); 1195 return retval; 1196 } 1197 1198 /* this is a message we already processed, do nothing */ 1199 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 1200 return 0; 1201 1202 /* flush the ack before we write any messages back */ 1203 IXGBE_WRITE_FLUSH(hw); 1204 1205 if (msgbuf[0] == IXGBE_VF_RESET) 1206 return ixgbe_vf_reset_msg(adapter, vf); 1207 1208 /* 1209 * until the vf completes a virtual function reset it should not be 1210 * allowed to start any configuration. 1211 */ 1212 if (!adapter->vfinfo[vf].clear_to_send) { 1213 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1214 ixgbe_write_mbx(hw, msgbuf, 1, vf); 1215 return 0; 1216 } 1217 1218 switch ((msgbuf[0] & 0xFFFF)) { 1219 case IXGBE_VF_SET_MAC_ADDR: 1220 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 1221 break; 1222 case IXGBE_VF_SET_MULTICAST: 1223 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 1224 break; 1225 case IXGBE_VF_SET_VLAN: 1226 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1227 break; 1228 case IXGBE_VF_SET_LPE: 1229 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 1230 break; 1231 case IXGBE_VF_SET_MACVLAN: 1232 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1233 break; 1234 case IXGBE_VF_API_NEGOTIATE: 1235 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 1236 break; 1237 case IXGBE_VF_GET_QUEUES: 1238 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1239 break; 1240 case IXGBE_VF_GET_RETA: 1241 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); 1242 break; 1243 case IXGBE_VF_GET_RSS_KEY: 1244 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); 1245 break; 1246 case IXGBE_VF_UPDATE_XCAST_MODE: 1247 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf); 1248 break; 1249 default: 1250 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1251 retval = IXGBE_ERR_MBX; 1252 break; 1253 } 1254 1255 /* notify the VF of the results of what it sent us */ 1256 if (retval) 1257 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1258 else 1259 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1260 1261 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1262 1263 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1264 1265 return retval; 1266 } 1267 1268 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1269 { 1270 struct ixgbe_hw *hw = &adapter->hw; 1271 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1272 1273 /* if device isn't clear to send it shouldn't be reading either */ 1274 if (!adapter->vfinfo[vf].clear_to_send) 1275 ixgbe_write_mbx(hw, &msg, 1, vf); 1276 } 1277 1278 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1279 { 1280 struct ixgbe_hw *hw = &adapter->hw; 1281 u32 vf; 1282 1283 for (vf = 0; vf < adapter->num_vfs; vf++) { 1284 /* process any reset requests */ 1285 if (!ixgbe_check_for_rst(hw, vf)) 1286 ixgbe_vf_reset_event(adapter, vf); 1287 1288 /* process any messages pending */ 1289 if (!ixgbe_check_for_msg(hw, vf)) 1290 ixgbe_rcv_msg_from_vf(adapter, vf); 1291 1292 /* process any acks */ 1293 if (!ixgbe_check_for_ack(hw, vf)) 1294 ixgbe_rcv_ack_from_vf(adapter, vf); 1295 } 1296 } 1297 1298 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1299 { 1300 struct ixgbe_hw *hw = &adapter->hw; 1301 1302 /* disable transmit and receive for all vfs */ 1303 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1304 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1305 1306 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1307 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1308 } 1309 1310 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf) 1311 { 1312 struct ixgbe_hw *hw = &adapter->hw; 1313 u32 ping; 1314 1315 ping = IXGBE_PF_CONTROL_MSG; 1316 if (adapter->vfinfo[vf].clear_to_send) 1317 ping |= IXGBE_VT_MSGTYPE_CTS; 1318 ixgbe_write_mbx(hw, &ping, 1, vf); 1319 } 1320 1321 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1322 { 1323 struct ixgbe_hw *hw = &adapter->hw; 1324 u32 ping; 1325 int i; 1326 1327 for (i = 0 ; i < adapter->num_vfs; i++) { 1328 ping = IXGBE_PF_CONTROL_MSG; 1329 if (adapter->vfinfo[i].clear_to_send) 1330 ping |= IXGBE_VT_MSGTYPE_CTS; 1331 ixgbe_write_mbx(hw, &ping, 1, i); 1332 } 1333 } 1334 1335 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1336 { 1337 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1338 s32 retval; 1339 1340 if (vf >= adapter->num_vfs) 1341 return -EINVAL; 1342 1343 if (is_valid_ether_addr(mac)) { 1344 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", 1345 mac, vf); 1346 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective."); 1347 1348 retval = ixgbe_set_vf_mac(adapter, vf, mac); 1349 if (retval >= 0) { 1350 adapter->vfinfo[vf].pf_set_mac = true; 1351 1352 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1353 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n"); 1354 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n"); 1355 } 1356 } else { 1357 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n"); 1358 } 1359 } else if (is_zero_ether_addr(mac)) { 1360 unsigned char *vf_mac_addr = 1361 adapter->vfinfo[vf].vf_mac_addresses; 1362 1363 /* nothing to do */ 1364 if (is_zero_ether_addr(vf_mac_addr)) 1365 return 0; 1366 1367 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf); 1368 1369 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf); 1370 if (retval >= 0) { 1371 adapter->vfinfo[vf].pf_set_mac = false; 1372 memcpy(vf_mac_addr, mac, ETH_ALEN); 1373 } else { 1374 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n"); 1375 } 1376 } else { 1377 retval = -EINVAL; 1378 } 1379 1380 return retval; 1381 } 1382 1383 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1384 u16 vlan, u8 qos) 1385 { 1386 struct ixgbe_hw *hw = &adapter->hw; 1387 int err; 1388 1389 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1390 if (err) 1391 goto out; 1392 1393 /* Revoke tagless access via VLAN 0 */ 1394 ixgbe_set_vf_vlan(adapter, false, 0, vf); 1395 1396 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1397 ixgbe_set_vmolr(hw, vf, false); 1398 1399 /* enable hide vlan on X550 */ 1400 if (hw->mac.type >= ixgbe_mac_X550) 1401 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1402 IXGBE_QDE_HIDE_VLAN); 1403 1404 adapter->vfinfo[vf].pf_vlan = vlan; 1405 adapter->vfinfo[vf].pf_qos = qos; 1406 dev_info(&adapter->pdev->dev, 1407 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1408 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1409 dev_warn(&adapter->pdev->dev, 1410 "The VF VLAN has been set, but the PF device is not up.\n"); 1411 dev_warn(&adapter->pdev->dev, 1412 "Bring the PF device up before attempting to use the VF device.\n"); 1413 } 1414 1415 out: 1416 return err; 1417 } 1418 1419 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1420 { 1421 struct ixgbe_hw *hw = &adapter->hw; 1422 int err; 1423 1424 err = ixgbe_set_vf_vlan(adapter, false, 1425 adapter->vfinfo[vf].pf_vlan, vf); 1426 /* Restore tagless access via VLAN 0 */ 1427 ixgbe_set_vf_vlan(adapter, true, 0, vf); 1428 ixgbe_clear_vmvir(adapter, vf); 1429 ixgbe_set_vmolr(hw, vf, true); 1430 1431 /* disable hide VLAN on X550 */ 1432 if (hw->mac.type >= ixgbe_mac_X550) 1433 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1434 1435 adapter->vfinfo[vf].pf_vlan = 0; 1436 adapter->vfinfo[vf].pf_qos = 0; 1437 1438 return err; 1439 } 1440 1441 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, 1442 u8 qos, __be16 vlan_proto) 1443 { 1444 int err = 0; 1445 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1446 1447 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1448 return -EINVAL; 1449 if (vlan_proto != htons(ETH_P_8021Q)) 1450 return -EPROTONOSUPPORT; 1451 if (vlan || qos) { 1452 /* Check if there is already a port VLAN set, if so 1453 * we have to delete the old one first before we 1454 * can set the new one. The usage model had 1455 * previously assumed the user would delete the 1456 * old port VLAN before setting a new one but this 1457 * is not necessarily the case. 1458 */ 1459 if (adapter->vfinfo[vf].pf_vlan) 1460 err = ixgbe_disable_port_vlan(adapter, vf); 1461 if (err) 1462 goto out; 1463 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1464 } else { 1465 err = ixgbe_disable_port_vlan(adapter, vf); 1466 } 1467 1468 out: 1469 return err; 1470 } 1471 1472 int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1473 { 1474 switch (adapter->link_speed) { 1475 case IXGBE_LINK_SPEED_100_FULL: 1476 return 100; 1477 case IXGBE_LINK_SPEED_1GB_FULL: 1478 return 1000; 1479 case IXGBE_LINK_SPEED_10GB_FULL: 1480 return 10000; 1481 default: 1482 return 0; 1483 } 1484 } 1485 1486 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1487 { 1488 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1489 struct ixgbe_hw *hw = &adapter->hw; 1490 u32 bcnrc_val = 0; 1491 u16 queue, queues_per_pool; 1492 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1493 1494 if (tx_rate) { 1495 /* start with base link speed value */ 1496 bcnrc_val = adapter->vf_rate_link_speed; 1497 1498 /* Calculate the rate factor values to set */ 1499 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1500 bcnrc_val /= tx_rate; 1501 1502 /* clear everything but the rate factor */ 1503 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1504 IXGBE_RTTBCNRC_RF_DEC_MASK; 1505 1506 /* enable the rate scheduler */ 1507 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1508 } 1509 1510 /* 1511 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1512 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1513 * and 0x004 otherwise. 1514 */ 1515 switch (hw->mac.type) { 1516 case ixgbe_mac_82599EB: 1517 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1518 break; 1519 case ixgbe_mac_X540: 1520 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1521 break; 1522 default: 1523 break; 1524 } 1525 1526 /* determine how many queues per pool based on VMDq mask */ 1527 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1528 1529 /* write value for all Tx queues belonging to VF */ 1530 for (queue = 0; queue < queues_per_pool; queue++) { 1531 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1532 1533 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1534 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1535 } 1536 } 1537 1538 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1539 { 1540 int i; 1541 1542 /* VF Tx rate limit was not set */ 1543 if (!adapter->vf_rate_link_speed) 1544 return; 1545 1546 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1547 adapter->vf_rate_link_speed = 0; 1548 dev_info(&adapter->pdev->dev, 1549 "Link speed has been changed. VF Transmit rate is disabled\n"); 1550 } 1551 1552 for (i = 0; i < adapter->num_vfs; i++) { 1553 if (!adapter->vf_rate_link_speed) 1554 adapter->vfinfo[i].tx_rate = 0; 1555 1556 ixgbe_set_vf_rate_limit(adapter, i); 1557 } 1558 } 1559 1560 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1561 int max_tx_rate) 1562 { 1563 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1564 int link_speed; 1565 1566 /* verify VF is active */ 1567 if (vf >= adapter->num_vfs) 1568 return -EINVAL; 1569 1570 /* verify link is up */ 1571 if (!adapter->link_up) 1572 return -EINVAL; 1573 1574 /* verify we are linked at 10Gbps */ 1575 link_speed = ixgbe_link_mbps(adapter); 1576 if (link_speed != 10000) 1577 return -EINVAL; 1578 1579 if (min_tx_rate) 1580 return -EINVAL; 1581 1582 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1583 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1584 return -EINVAL; 1585 1586 /* store values */ 1587 adapter->vf_rate_link_speed = link_speed; 1588 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1589 1590 /* update hardware configuration */ 1591 ixgbe_set_vf_rate_limit(adapter, vf); 1592 1593 return 0; 1594 } 1595 1596 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1597 { 1598 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1599 struct ixgbe_hw *hw = &adapter->hw; 1600 1601 if (vf >= adapter->num_vfs) 1602 return -EINVAL; 1603 1604 adapter->vfinfo[vf].spoofchk_enabled = setting; 1605 1606 /* configure MAC spoofing */ 1607 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf); 1608 1609 /* configure VLAN spoofing */ 1610 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf); 1611 1612 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be 1613 * calling set_ethertype_anti_spoofing for each VF in loop below 1614 */ 1615 if (hw->mac.ops.set_ethertype_anti_spoofing) { 1616 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP), 1617 (IXGBE_ETQF_FILTER_EN | 1618 IXGBE_ETQF_TX_ANTISPOOF | 1619 IXGBE_ETH_P_LLDP)); 1620 1621 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC), 1622 (IXGBE_ETQF_FILTER_EN | 1623 IXGBE_ETQF_TX_ANTISPOOF | 1624 ETH_P_PAUSE)); 1625 1626 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf); 1627 } 1628 1629 return 0; 1630 } 1631 1632 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, 1633 bool setting) 1634 { 1635 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1636 1637 /* This operation is currently supported only for 82599 and x540 1638 * devices. 1639 */ 1640 if (adapter->hw.mac.type < ixgbe_mac_82599EB || 1641 adapter->hw.mac.type >= ixgbe_mac_X550) 1642 return -EOPNOTSUPP; 1643 1644 if (vf >= adapter->num_vfs) 1645 return -EINVAL; 1646 1647 adapter->vfinfo[vf].rss_query_enabled = setting; 1648 1649 return 0; 1650 } 1651 1652 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) 1653 { 1654 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1655 1656 if (vf >= adapter->num_vfs) 1657 return -EINVAL; 1658 1659 /* nothing to do */ 1660 if (adapter->vfinfo[vf].trusted == setting) 1661 return 0; 1662 1663 adapter->vfinfo[vf].trusted = setting; 1664 1665 /* reset VF to reconfigure features */ 1666 adapter->vfinfo[vf].clear_to_send = false; 1667 ixgbe_ping_vf(adapter, vf); 1668 1669 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not "); 1670 1671 return 0; 1672 } 1673 1674 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1675 int vf, struct ifla_vf_info *ivi) 1676 { 1677 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1678 if (vf >= adapter->num_vfs) 1679 return -EINVAL; 1680 ivi->vf = vf; 1681 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1682 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1683 ivi->min_tx_rate = 0; 1684 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1685 ivi->qos = adapter->vfinfo[vf].pf_qos; 1686 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1687 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; 1688 ivi->trusted = adapter->vfinfo[vf].trusted; 1689 return 0; 1690 } 1691