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