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 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; 82 83 /* Enable VMDq flag so device will be set in VM mode */ 84 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED; 85 if (!adapter->ring_feature[RING_F_VMDQ].limit) 86 adapter->ring_feature[RING_F_VMDQ].limit = 1; 87 88 /* Allocate memory for per VF control structures */ 89 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage), 90 GFP_KERNEL); 91 if (!adapter->vfinfo) 92 return -ENOMEM; 93 94 adapter->num_vfs = num_vfs; 95 96 ixgbe_alloc_vf_macvlans(adapter, num_vfs); 97 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs; 98 99 /* Initialize default switching mode VEB */ 100 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 101 adapter->bridge_mode = BRIDGE_MODE_VEB; 102 103 /* limit trafffic classes based on VFs enabled */ 104 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) { 105 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 106 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 107 } else if (num_vfs < 32) { 108 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 109 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 110 } else { 111 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 112 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 113 } 114 115 /* Disable RSC when in SR-IOV mode */ 116 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 117 IXGBE_FLAG2_RSC_ENABLED); 118 119 for (i = 0; i < num_vfs; i++) { 120 /* enable spoof checking for all VFs */ 121 adapter->vfinfo[i].spoofchk_enabled = true; 122 123 /* We support VF RSS querying only for 82599 and x540 124 * devices at the moment. These devices share RSS 125 * indirection table and RSS hash key with PF therefore 126 * we want to disable the querying by default. 127 */ 128 adapter->vfinfo[i].rss_query_enabled = 0; 129 130 /* Untrust all VFs */ 131 adapter->vfinfo[i].trusted = false; 132 133 /* set the default xcast mode */ 134 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE; 135 } 136 137 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs); 138 return 0; 139 } 140 141 /** 142 * ixgbe_get_vfs - Find and take references to all vf devices 143 * @adapter: Pointer to adapter struct 144 */ 145 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter) 146 { 147 struct pci_dev *pdev = adapter->pdev; 148 u16 vendor = pdev->vendor; 149 struct pci_dev *vfdev; 150 int vf = 0; 151 u16 vf_id; 152 int pos; 153 154 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 155 if (!pos) 156 return; 157 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id); 158 159 vfdev = pci_get_device(vendor, vf_id, NULL); 160 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) { 161 if (!vfdev->is_virtfn) 162 continue; 163 if (vfdev->physfn != pdev) 164 continue; 165 if (vf >= adapter->num_vfs) 166 continue; 167 pci_dev_get(vfdev); 168 adapter->vfinfo[vf].vfdev = vfdev; 169 ++vf; 170 } 171 } 172 173 /* Note this function is called when the user wants to enable SR-IOV 174 * VFs using the now deprecated module parameter 175 */ 176 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs) 177 { 178 int pre_existing_vfs = 0; 179 unsigned int num_vfs; 180 181 pre_existing_vfs = pci_num_vf(adapter->pdev); 182 if (!pre_existing_vfs && !max_vfs) 183 return; 184 185 /* If there are pre-existing VFs then we have to force 186 * use of that many - over ride any module parameter value. 187 * This may result from the user unloading the PF driver 188 * while VFs were assigned to guest VMs or because the VFs 189 * have been created via the new PCI SR-IOV sysfs interface. 190 */ 191 if (pre_existing_vfs) { 192 num_vfs = pre_existing_vfs; 193 dev_warn(&adapter->pdev->dev, 194 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); 195 } else { 196 int err; 197 /* 198 * The 82599 supports up to 64 VFs per physical function 199 * but this implementation limits allocation to 63 so that 200 * basic networking resources are still available to the 201 * physical function. If the user requests greater than 202 * 63 VFs then it is an error - reset to default of zero. 203 */ 204 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT); 205 206 err = pci_enable_sriov(adapter->pdev, num_vfs); 207 if (err) { 208 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 209 return; 210 } 211 } 212 213 if (!__ixgbe_enable_sriov(adapter, num_vfs)) { 214 ixgbe_get_vfs(adapter); 215 return; 216 } 217 218 /* If we have gotten to this point then there is no memory available 219 * to manage the VF devices - print message and bail. 220 */ 221 e_err(probe, "Unable to allocate memory for VF Data Storage - " 222 "SRIOV disabled\n"); 223 ixgbe_disable_sriov(adapter); 224 } 225 226 #endif /* #ifdef CONFIG_PCI_IOV */ 227 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 228 { 229 unsigned int num_vfs = adapter->num_vfs, vf; 230 struct ixgbe_hw *hw = &adapter->hw; 231 u32 gpie; 232 u32 vmdctl; 233 int rss; 234 235 /* set num VFs to 0 to prevent access to vfinfo */ 236 adapter->num_vfs = 0; 237 238 /* put the reference to all of the vf devices */ 239 for (vf = 0; vf < num_vfs; ++vf) { 240 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 241 242 if (!vfdev) 243 continue; 244 adapter->vfinfo[vf].vfdev = NULL; 245 pci_dev_put(vfdev); 246 } 247 248 /* free VF control structures */ 249 kfree(adapter->vfinfo); 250 adapter->vfinfo = NULL; 251 252 /* free macvlan list */ 253 kfree(adapter->mv_list); 254 adapter->mv_list = NULL; 255 256 /* if SR-IOV is already disabled then there is nothing to do */ 257 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 258 return 0; 259 260 #ifdef CONFIG_PCI_IOV 261 /* 262 * If our VFs are assigned we cannot shut down SR-IOV 263 * without causing issues, so just leave the hardware 264 * available but disabled 265 */ 266 if (pci_vfs_assigned(adapter->pdev)) { 267 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 268 return -EPERM; 269 } 270 /* disable iov and allow time for transactions to clear */ 271 pci_disable_sriov(adapter->pdev); 272 #endif 273 274 /* turn off device IOV mode */ 275 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0); 276 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 277 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 278 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 279 280 /* set default pool back to 0 */ 281 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 282 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 283 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 284 IXGBE_WRITE_FLUSH(hw); 285 286 /* Disable VMDq flag so device will be set in VM mode */ 287 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) { 288 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 289 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 290 rss = min_t(int, ixgbe_max_rss_indices(adapter), 291 num_online_cpus()); 292 } else { 293 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 294 } 295 296 adapter->ring_feature[RING_F_VMDQ].offset = 0; 297 adapter->ring_feature[RING_F_RSS].limit = rss; 298 299 /* take a breather then clean up driver data */ 300 msleep(100); 301 return 0; 302 } 303 304 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 305 { 306 #ifdef CONFIG_PCI_IOV 307 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 308 int err = 0; 309 u8 num_tc; 310 int i; 311 int pre_existing_vfs = pci_num_vf(dev); 312 313 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 314 err = ixgbe_disable_sriov(adapter); 315 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 316 return num_vfs; 317 318 if (err) 319 return err; 320 321 /* While the SR-IOV capability structure reports total VFs to be 64, 322 * we limit the actual number allocated as below based on two factors. 323 * Num_TCs MAX_VFs 324 * 1 63 325 * <=4 31 326 * >4 15 327 * First, we reserve some transmit/receive resources for the PF. 328 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 329 * account for this, so that we don't accidentally allocate more VFs 330 * than we have available pools. The PCI bus driver already checks for 331 * other values out of range. 332 */ 333 num_tc = netdev_get_num_tc(adapter->netdev); 334 335 if (num_tc > 4) { 336 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VFS_8TC) { 337 e_dev_err("Currently the device is configured with %d TCs, Creating more than %d VFs is not allowed\n", num_tc, IXGBE_MAX_VFS_8TC); 338 return -EPERM; 339 } 340 } else if ((num_tc > 1) && (num_tc <= 4)) { 341 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VFS_4TC) { 342 e_dev_err("Currently the device is configured with %d TCs, Creating more than %d VFs is not allowed\n", num_tc, IXGBE_MAX_VFS_4TC); 343 return -EPERM; 344 } 345 } else { 346 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VFS_1TC) { 347 e_dev_err("Currently the device is configured with %d TCs, Creating more than %d VFs is not allowed\n", num_tc, IXGBE_MAX_VFS_1TC); 348 return -EPERM; 349 } 350 } 351 352 err = __ixgbe_enable_sriov(adapter, num_vfs); 353 if (err) 354 return err; 355 356 for (i = 0; i < num_vfs; i++) 357 ixgbe_vf_configuration(dev, (i | 0x10000000)); 358 359 /* reset before enabling SRIOV to avoid mailbox issues */ 360 ixgbe_sriov_reinit(adapter); 361 362 err = pci_enable_sriov(dev, num_vfs); 363 if (err) { 364 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 365 return err; 366 } 367 ixgbe_get_vfs(adapter); 368 369 return num_vfs; 370 #else 371 return 0; 372 #endif 373 } 374 375 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 376 { 377 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 378 int err; 379 #ifdef CONFIG_PCI_IOV 380 u32 current_flags = adapter->flags; 381 #endif 382 383 err = ixgbe_disable_sriov(adapter); 384 385 /* Only reinit if no error and state changed */ 386 #ifdef CONFIG_PCI_IOV 387 if (!err && current_flags != adapter->flags) 388 ixgbe_sriov_reinit(adapter); 389 #endif 390 391 return err; 392 } 393 394 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 395 { 396 if (num_vfs == 0) 397 return ixgbe_pci_sriov_disable(dev); 398 else 399 return ixgbe_pci_sriov_enable(dev, num_vfs); 400 } 401 402 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 403 u32 *msgbuf, u32 vf) 404 { 405 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 406 >> IXGBE_VT_MSGINFO_SHIFT; 407 u16 *hash_list = (u16 *)&msgbuf[1]; 408 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 409 struct ixgbe_hw *hw = &adapter->hw; 410 int i; 411 u32 vector_bit; 412 u32 vector_reg; 413 u32 mta_reg; 414 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 415 416 /* only so many hash values supported */ 417 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 418 419 /* 420 * salt away the number of multi cast addresses assigned 421 * to this VF for later use to restore when the PF multi cast 422 * list changes 423 */ 424 vfinfo->num_vf_mc_hashes = entries; 425 426 /* 427 * VFs are limited to using the MTA hash table for their multicast 428 * addresses 429 */ 430 for (i = 0; i < entries; i++) { 431 vfinfo->vf_mc_hashes[i] = hash_list[i]; 432 } 433 434 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 435 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 436 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 437 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 438 mta_reg |= BIT(vector_bit); 439 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 440 } 441 vmolr |= IXGBE_VMOLR_ROMPE; 442 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 443 444 return 0; 445 } 446 447 #ifdef CONFIG_PCI_IOV 448 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 449 { 450 struct ixgbe_hw *hw = &adapter->hw; 451 struct vf_data_storage *vfinfo; 452 int i, j; 453 u32 vector_bit; 454 u32 vector_reg; 455 u32 mta_reg; 456 457 for (i = 0; i < adapter->num_vfs; i++) { 458 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 459 vfinfo = &adapter->vfinfo[i]; 460 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 461 hw->addr_ctrl.mta_in_use++; 462 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 463 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 464 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 465 mta_reg |= BIT(vector_bit); 466 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 467 } 468 469 if (vfinfo->num_vf_mc_hashes) 470 vmolr |= IXGBE_VMOLR_ROMPE; 471 else 472 vmolr &= ~IXGBE_VMOLR_ROMPE; 473 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 474 } 475 476 /* Restore any VF macvlans */ 477 ixgbe_full_sync_mac_table(adapter); 478 } 479 #endif 480 481 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 482 u32 vf) 483 { 484 struct ixgbe_hw *hw = &adapter->hw; 485 int err; 486 487 /* If VLAN overlaps with one the PF is currently monitoring make 488 * sure that we are able to allocate a VLVF entry. This may be 489 * redundant but it guarantees PF will maintain visibility to 490 * the VLAN. 491 */ 492 if (add && test_bit(vid, adapter->active_vlans)) { 493 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false); 494 if (err) 495 return err; 496 } 497 498 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false); 499 500 if (add && !err) 501 return err; 502 503 /* If we failed to add the VF VLAN or we are removing the VF VLAN 504 * we may need to drop the PF pool bit in order to allow us to free 505 * up the VLVF resources. 506 */ 507 if (test_bit(vid, adapter->active_vlans) || 508 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 509 ixgbe_update_pf_promisc_vlvf(adapter, vid); 510 511 return err; 512 } 513 514 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 515 { 516 struct ixgbe_hw *hw = &adapter->hw; 517 int max_frame = msgbuf[1]; 518 u32 max_frs; 519 520 /* 521 * For 82599EB we have to keep all PFs and VFs operating with 522 * the same max_frame value in order to avoid sending an oversize 523 * frame to a VF. In order to guarantee this is handled correctly 524 * for all cases we have several special exceptions to take into 525 * account before we can enable the VF for receive 526 */ 527 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 528 struct net_device *dev = adapter->netdev; 529 int pf_max_frame = dev->mtu + ETH_HLEN; 530 u32 reg_offset, vf_shift, vfre; 531 s32 err = 0; 532 533 #ifdef CONFIG_FCOE 534 if (dev->features & NETIF_F_FCOE_MTU) 535 pf_max_frame = max_t(int, pf_max_frame, 536 IXGBE_FCOE_JUMBO_FRAME_SIZE); 537 538 #endif /* CONFIG_FCOE */ 539 switch (adapter->vfinfo[vf].vf_api) { 540 case ixgbe_mbox_api_11: 541 case ixgbe_mbox_api_12: 542 case ixgbe_mbox_api_13: 543 /* Version 1.1 supports jumbo frames on VFs if PF has 544 * jumbo frames enabled which means legacy VFs are 545 * disabled 546 */ 547 if (pf_max_frame > ETH_FRAME_LEN) 548 break; 549 /* fall through */ 550 default: 551 /* If the PF or VF are running w/ jumbo frames enabled 552 * we need to shut down the VF Rx path as we cannot 553 * support jumbo frames on legacy VFs 554 */ 555 if ((pf_max_frame > ETH_FRAME_LEN) || 556 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 557 err = -EINVAL; 558 break; 559 } 560 561 /* determine VF receive enable location */ 562 vf_shift = vf % 32; 563 reg_offset = vf / 32; 564 565 /* enable or disable receive depending on error */ 566 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 567 if (err) 568 vfre &= ~BIT(vf_shift); 569 else 570 vfre |= BIT(vf_shift); 571 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 572 573 if (err) { 574 e_err(drv, "VF max_frame %d out of range\n", max_frame); 575 return err; 576 } 577 } 578 579 /* MTU < 68 is an error and causes problems on some kernels */ 580 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 581 e_err(drv, "VF max_frame %d out of range\n", max_frame); 582 return -EINVAL; 583 } 584 585 /* pull current max frame size from hardware */ 586 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 587 max_frs &= IXGBE_MHADD_MFS_MASK; 588 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 589 590 if (max_frs < max_frame) { 591 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 592 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 593 } 594 595 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 596 597 return 0; 598 } 599 600 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 601 { 602 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 603 vmolr |= IXGBE_VMOLR_BAM; 604 if (aupe) 605 vmolr |= IXGBE_VMOLR_AUPE; 606 else 607 vmolr &= ~IXGBE_VMOLR_AUPE; 608 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 609 } 610 611 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 612 { 613 struct ixgbe_hw *hw = &adapter->hw; 614 615 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 616 } 617 618 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf) 619 { 620 struct ixgbe_hw *hw = &adapter->hw; 621 u32 vlvfb_mask, pool_mask, i; 622 623 /* create mask for VF and other pools */ 624 pool_mask = ~BIT(VMDQ_P(0) % 32); 625 vlvfb_mask = BIT(vf % 32); 626 627 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */ 628 for (i = IXGBE_VLVF_ENTRIES; i--;) { 629 u32 bits[2], vlvfb, vid, vfta, vlvf; 630 u32 word = i * 2 + vf / 32; 631 u32 mask; 632 633 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 634 635 /* if our bit isn't set we can skip it */ 636 if (!(vlvfb & vlvfb_mask)) 637 continue; 638 639 /* clear our bit from vlvfb */ 640 vlvfb ^= vlvfb_mask; 641 642 /* create 64b mask to chedk to see if we should clear VLVF */ 643 bits[word % 2] = vlvfb; 644 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1)); 645 646 /* if other pools are present, just remove ourselves */ 647 if (bits[(VMDQ_P(0) / 32) ^ 1] || 648 (bits[VMDQ_P(0) / 32] & pool_mask)) 649 goto update_vlvfb; 650 651 /* if PF is present, leave VFTA */ 652 if (bits[0] || bits[1]) 653 goto update_vlvf; 654 655 /* if we cannot determine VLAN just remove ourselves */ 656 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 657 if (!vlvf) 658 goto update_vlvfb; 659 660 vid = vlvf & VLAN_VID_MASK; 661 mask = BIT(vid % 32); 662 663 /* clear bit from VFTA */ 664 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32)); 665 if (vfta & mask) 666 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask); 667 update_vlvf: 668 /* clear POOL selection enable */ 669 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0); 670 671 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 672 vlvfb = 0; 673 update_vlvfb: 674 /* clear pool bits */ 675 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb); 676 } 677 } 678 679 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 680 int vf, int index, unsigned char *mac_addr) 681 { 682 struct vf_macvlans *entry; 683 struct list_head *pos; 684 int retval = 0; 685 686 if (index <= 1) { 687 list_for_each(pos, &adapter->vf_mvs.l) { 688 entry = list_entry(pos, struct vf_macvlans, l); 689 if (entry->vf == vf) { 690 entry->vf = -1; 691 entry->free = true; 692 entry->is_macvlan = false; 693 ixgbe_del_mac_filter(adapter, 694 entry->vf_macvlan, vf); 695 } 696 } 697 } 698 699 /* 700 * If index was zero then we were asked to clear the uc list 701 * for the VF. We're done. 702 */ 703 if (!index) 704 return 0; 705 706 entry = NULL; 707 708 list_for_each(pos, &adapter->vf_mvs.l) { 709 entry = list_entry(pos, struct vf_macvlans, l); 710 if (entry->free) 711 break; 712 } 713 714 /* 715 * If we traversed the entire list and didn't find a free entry 716 * then we're out of space on the RAR table. Also entry may 717 * be NULL because the original memory allocation for the list 718 * failed, which is not fatal but does mean we can't support 719 * VF requests for MACVLAN because we couldn't allocate 720 * memory for the list management required. 721 */ 722 if (!entry || !entry->free) 723 return -ENOSPC; 724 725 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 726 if (retval < 0) 727 return retval; 728 729 entry->free = false; 730 entry->is_macvlan = true; 731 entry->vf = vf; 732 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 733 734 return 0; 735 } 736 737 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 738 { 739 struct ixgbe_hw *hw = &adapter->hw; 740 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 741 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 742 743 /* remove VLAN filters beloning to this VF */ 744 ixgbe_clear_vf_vlans(adapter, vf); 745 746 /* add back PF assigned VLAN or VLAN 0 */ 747 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 748 749 /* reset offloads to defaults */ 750 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 751 752 /* set outgoing tags for VFs */ 753 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 754 ixgbe_clear_vmvir(adapter, vf); 755 } else { 756 if (vfinfo->pf_qos || !num_tcs) 757 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 758 vfinfo->pf_qos, vf); 759 else 760 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 761 adapter->default_up, vf); 762 763 if (vfinfo->spoofchk_enabled) 764 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 765 } 766 767 /* reset multicast table array for vf */ 768 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 769 770 /* Flush and reset the mta with the new values */ 771 ixgbe_set_rx_mode(adapter->netdev); 772 773 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 774 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL); 775 776 /* reset VF api back to unknown */ 777 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 778 } 779 780 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 781 int vf, unsigned char *mac_addr) 782 { 783 s32 retval; 784 785 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 786 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); 787 if (retval >= 0) 788 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 789 ETH_ALEN); 790 else 791 memset(adapter->vfinfo[vf].vf_mac_addresses, 0, ETH_ALEN); 792 793 return retval; 794 } 795 796 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 797 { 798 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 799 unsigned int vfn = (event_mask & 0x3f); 800 801 bool enable = ((event_mask & 0x10000000U) != 0); 802 803 if (enable) 804 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 805 806 return 0; 807 } 808 809 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 810 u32 qde) 811 { 812 struct ixgbe_hw *hw = &adapter->hw; 813 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 814 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 815 int i; 816 817 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 818 u32 reg; 819 820 /* flush previous write */ 821 IXGBE_WRITE_FLUSH(hw); 822 823 /* indicate to hardware that we want to set drop enable */ 824 reg = IXGBE_QDE_WRITE | qde; 825 reg |= i << IXGBE_QDE_IDX_SHIFT; 826 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 827 } 828 } 829 830 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 831 { 832 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 833 struct ixgbe_hw *hw = &adapter->hw; 834 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 835 u32 reg, reg_offset, vf_shift; 836 u32 msgbuf[4] = {0, 0, 0, 0}; 837 u8 *addr = (u8 *)(&msgbuf[1]); 838 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 839 int i; 840 841 e_info(probe, "VF Reset msg received from vf %d\n", vf); 842 843 /* reset the filters for the device */ 844 ixgbe_vf_reset_event(adapter, vf); 845 846 /* set vf mac address */ 847 if (!is_zero_ether_addr(vf_mac)) 848 ixgbe_set_vf_mac(adapter, vf, vf_mac); 849 850 vf_shift = vf % 32; 851 reg_offset = vf / 32; 852 853 /* enable transmit for vf */ 854 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 855 reg |= BIT(vf_shift); 856 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 857 858 /* force drop enable for all VF Rx queues */ 859 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 860 861 /* enable receive for vf */ 862 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 863 reg |= BIT(vf_shift); 864 /* 865 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 866 * For more info take a look at ixgbe_set_vf_lpe 867 */ 868 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 869 struct net_device *dev = adapter->netdev; 870 int pf_max_frame = dev->mtu + ETH_HLEN; 871 872 #ifdef CONFIG_FCOE 873 if (dev->features & NETIF_F_FCOE_MTU) 874 pf_max_frame = max_t(int, pf_max_frame, 875 IXGBE_FCOE_JUMBO_FRAME_SIZE); 876 877 #endif /* CONFIG_FCOE */ 878 if (pf_max_frame > ETH_FRAME_LEN) 879 reg &= ~BIT(vf_shift); 880 } 881 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 882 883 /* enable VF mailbox for further messages */ 884 adapter->vfinfo[vf].clear_to_send = true; 885 886 /* Enable counting of spoofed packets in the SSVPC register */ 887 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 888 reg |= BIT(vf_shift); 889 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 890 891 /* 892 * Reset the VFs TDWBAL and TDWBAH registers 893 * which are not cleared by an FLR 894 */ 895 for (i = 0; i < q_per_pool; i++) { 896 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 897 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 898 } 899 900 /* reply to reset with ack and vf mac address */ 901 msgbuf[0] = IXGBE_VF_RESET; 902 if (!is_zero_ether_addr(vf_mac)) { 903 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 904 memcpy(addr, vf_mac, ETH_ALEN); 905 } else { 906 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 907 dev_warn(&adapter->pdev->dev, 908 "VF %d has no MAC address assigned, you may have to assign one manually\n", 909 vf); 910 } 911 912 /* 913 * Piggyback the multicast filter type so VF can compute the 914 * correct vectors 915 */ 916 msgbuf[3] = hw->mac.mc_filter_type; 917 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 918 919 return 0; 920 } 921 922 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 923 u32 *msgbuf, u32 vf) 924 { 925 u8 *new_mac = ((u8 *)(&msgbuf[1])); 926 927 if (!is_valid_ether_addr(new_mac)) { 928 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 929 return -1; 930 } 931 932 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 933 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 934 e_warn(drv, 935 "VF %d attempted to override administratively set MAC address\n" 936 "Reload the VF driver to resume operations\n", 937 vf); 938 return -1; 939 } 940 941 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 942 } 943 944 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 945 u32 *msgbuf, u32 vf) 946 { 947 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 948 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 949 u8 tcs = netdev_get_num_tc(adapter->netdev); 950 951 if (adapter->vfinfo[vf].pf_vlan || tcs) { 952 e_warn(drv, 953 "VF %d attempted to override administratively set VLAN configuration\n" 954 "Reload the VF driver to resume operations\n", 955 vf); 956 return -1; 957 } 958 959 /* VLAN 0 is a special case, don't allow it to be removed */ 960 if (!vid && !add) 961 return 0; 962 963 return ixgbe_set_vf_vlan(adapter, add, vid, vf); 964 } 965 966 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 967 u32 *msgbuf, u32 vf) 968 { 969 u8 *new_mac = ((u8 *)(&msgbuf[1])); 970 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 971 IXGBE_VT_MSGINFO_SHIFT; 972 int err; 973 974 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && 975 index > 0) { 976 e_warn(drv, 977 "VF %d requested MACVLAN filter but is administratively denied\n", 978 vf); 979 return -1; 980 } 981 982 /* An non-zero index indicates the VF is setting a filter */ 983 if (index) { 984 if (!is_valid_ether_addr(new_mac)) { 985 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 986 return -1; 987 } 988 989 /* 990 * If the VF is allowed to set MAC filters then turn off 991 * anti-spoofing to avoid false positives. 992 */ 993 if (adapter->vfinfo[vf].spoofchk_enabled) { 994 struct ixgbe_hw *hw = &adapter->hw; 995 996 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf); 997 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 998 } 999 } 1000 1001 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 1002 if (err == -ENOSPC) 1003 e_warn(drv, 1004 "VF %d has requested a MACVLAN filter but there is no space for it\n", 1005 vf); 1006 1007 return err < 0; 1008 } 1009 1010 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 1011 u32 *msgbuf, u32 vf) 1012 { 1013 int api = msgbuf[1]; 1014 1015 switch (api) { 1016 case ixgbe_mbox_api_10: 1017 case ixgbe_mbox_api_11: 1018 case ixgbe_mbox_api_12: 1019 case ixgbe_mbox_api_13: 1020 adapter->vfinfo[vf].vf_api = api; 1021 return 0; 1022 default: 1023 break; 1024 } 1025 1026 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 1027 1028 return -1; 1029 } 1030 1031 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 1032 u32 *msgbuf, u32 vf) 1033 { 1034 struct net_device *dev = adapter->netdev; 1035 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1036 unsigned int default_tc = 0; 1037 u8 num_tcs = netdev_get_num_tc(dev); 1038 1039 /* verify the PF is supporting the correct APIs */ 1040 switch (adapter->vfinfo[vf].vf_api) { 1041 case ixgbe_mbox_api_20: 1042 case ixgbe_mbox_api_11: 1043 case ixgbe_mbox_api_12: 1044 case ixgbe_mbox_api_13: 1045 break; 1046 default: 1047 return -1; 1048 } 1049 1050 /* only allow 1 Tx queue for bandwidth limiting */ 1051 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1052 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 1053 1054 /* if TCs > 1 determine which TC belongs to default user priority */ 1055 if (num_tcs > 1) 1056 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 1057 1058 /* notify VF of need for VLAN tag stripping, and correct queue */ 1059 if (num_tcs) 1060 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 1061 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 1062 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 1063 else 1064 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 1065 1066 /* notify VF of default queue */ 1067 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 1068 1069 return 0; 1070 } 1071 1072 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 1073 { 1074 u32 i, j; 1075 u32 *out_buf = &msgbuf[1]; 1076 const u8 *reta = adapter->rss_indir_tbl; 1077 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); 1078 1079 /* Check if operation is permitted */ 1080 if (!adapter->vfinfo[vf].rss_query_enabled) 1081 return -EPERM; 1082 1083 /* verify the PF is supporting the correct API */ 1084 switch (adapter->vfinfo[vf].vf_api) { 1085 case ixgbe_mbox_api_13: 1086 case ixgbe_mbox_api_12: 1087 break; 1088 default: 1089 return -EOPNOTSUPP; 1090 } 1091 1092 /* This mailbox command is supported (required) only for 82599 and x540 1093 * VFs which support up to 4 RSS queues. Therefore we will compress the 1094 * RETA by saving only 2 bits from each entry. This way we will be able 1095 * to transfer the whole RETA in a single mailbox operation. 1096 */ 1097 for (i = 0; i < reta_size / 16; i++) { 1098 out_buf[i] = 0; 1099 for (j = 0; j < 16; j++) 1100 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); 1101 } 1102 1103 return 0; 1104 } 1105 1106 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, 1107 u32 *msgbuf, u32 vf) 1108 { 1109 u32 *rss_key = &msgbuf[1]; 1110 1111 /* Check if the operation is permitted */ 1112 if (!adapter->vfinfo[vf].rss_query_enabled) 1113 return -EPERM; 1114 1115 /* verify the PF is supporting the correct API */ 1116 switch (adapter->vfinfo[vf].vf_api) { 1117 case ixgbe_mbox_api_13: 1118 case ixgbe_mbox_api_12: 1119 break; 1120 default: 1121 return -EOPNOTSUPP; 1122 } 1123 1124 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE); 1125 1126 return 0; 1127 } 1128 1129 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter, 1130 u32 *msgbuf, u32 vf) 1131 { 1132 struct ixgbe_hw *hw = &adapter->hw; 1133 int xcast_mode = msgbuf[1]; 1134 u32 vmolr, fctrl, disable, enable; 1135 1136 /* verify the PF is supporting the correct APIs */ 1137 switch (adapter->vfinfo[vf].vf_api) { 1138 case ixgbe_mbox_api_12: 1139 /* promisc introduced in 1.3 version */ 1140 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) 1141 return -EOPNOTSUPP; 1142 /* Fall threw */ 1143 case ixgbe_mbox_api_13: 1144 break; 1145 default: 1146 return -EOPNOTSUPP; 1147 } 1148 1149 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI && 1150 !adapter->vfinfo[vf].trusted) { 1151 xcast_mode = IXGBEVF_XCAST_MODE_MULTI; 1152 } 1153 1154 if (adapter->vfinfo[vf].xcast_mode == xcast_mode) 1155 goto out; 1156 1157 switch (xcast_mode) { 1158 case IXGBEVF_XCAST_MODE_NONE: 1159 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1160 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1161 enable = 0; 1162 break; 1163 case IXGBEVF_XCAST_MODE_MULTI: 1164 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1165 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE; 1166 break; 1167 case IXGBEVF_XCAST_MODE_ALLMULTI: 1168 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1169 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; 1170 break; 1171 case IXGBEVF_XCAST_MODE_PROMISC: 1172 if (hw->mac.type <= ixgbe_mac_82599EB) 1173 return -EOPNOTSUPP; 1174 1175 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 1176 if (!(fctrl & IXGBE_FCTRL_UPE)) { 1177 /* VF promisc requires PF in promisc */ 1178 e_warn(drv, 1179 "Enabling VF promisc requires PF in promisc\n"); 1180 return -EPERM; 1181 } 1182 1183 disable = 0; 1184 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | 1185 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; 1186 break; 1187 default: 1188 return -EOPNOTSUPP; 1189 } 1190 1191 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 1192 vmolr &= ~disable; 1193 vmolr |= enable; 1194 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 1195 1196 adapter->vfinfo[vf].xcast_mode = xcast_mode; 1197 1198 out: 1199 msgbuf[1] = xcast_mode; 1200 1201 return 0; 1202 } 1203 1204 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1205 { 1206 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 1207 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 1208 struct ixgbe_hw *hw = &adapter->hw; 1209 s32 retval; 1210 1211 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 1212 1213 if (retval) { 1214 pr_err("Error receiving message from VF\n"); 1215 return retval; 1216 } 1217 1218 /* this is a message we already processed, do nothing */ 1219 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 1220 return 0; 1221 1222 /* flush the ack before we write any messages back */ 1223 IXGBE_WRITE_FLUSH(hw); 1224 1225 if (msgbuf[0] == IXGBE_VF_RESET) 1226 return ixgbe_vf_reset_msg(adapter, vf); 1227 1228 /* 1229 * until the vf completes a virtual function reset it should not be 1230 * allowed to start any configuration. 1231 */ 1232 if (!adapter->vfinfo[vf].clear_to_send) { 1233 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1234 ixgbe_write_mbx(hw, msgbuf, 1, vf); 1235 return 0; 1236 } 1237 1238 switch ((msgbuf[0] & 0xFFFF)) { 1239 case IXGBE_VF_SET_MAC_ADDR: 1240 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 1241 break; 1242 case IXGBE_VF_SET_MULTICAST: 1243 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 1244 break; 1245 case IXGBE_VF_SET_VLAN: 1246 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1247 break; 1248 case IXGBE_VF_SET_LPE: 1249 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 1250 break; 1251 case IXGBE_VF_SET_MACVLAN: 1252 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1253 break; 1254 case IXGBE_VF_API_NEGOTIATE: 1255 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 1256 break; 1257 case IXGBE_VF_GET_QUEUES: 1258 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1259 break; 1260 case IXGBE_VF_GET_RETA: 1261 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); 1262 break; 1263 case IXGBE_VF_GET_RSS_KEY: 1264 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); 1265 break; 1266 case IXGBE_VF_UPDATE_XCAST_MODE: 1267 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf); 1268 break; 1269 default: 1270 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1271 retval = IXGBE_ERR_MBX; 1272 break; 1273 } 1274 1275 /* notify the VF of the results of what it sent us */ 1276 if (retval) 1277 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1278 else 1279 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1280 1281 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1282 1283 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1284 1285 return retval; 1286 } 1287 1288 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1289 { 1290 struct ixgbe_hw *hw = &adapter->hw; 1291 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1292 1293 /* if device isn't clear to send it shouldn't be reading either */ 1294 if (!adapter->vfinfo[vf].clear_to_send) 1295 ixgbe_write_mbx(hw, &msg, 1, vf); 1296 } 1297 1298 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1299 { 1300 struct ixgbe_hw *hw = &adapter->hw; 1301 u32 vf; 1302 1303 for (vf = 0; vf < adapter->num_vfs; vf++) { 1304 /* process any reset requests */ 1305 if (!ixgbe_check_for_rst(hw, vf)) 1306 ixgbe_vf_reset_event(adapter, vf); 1307 1308 /* process any messages pending */ 1309 if (!ixgbe_check_for_msg(hw, vf)) 1310 ixgbe_rcv_msg_from_vf(adapter, vf); 1311 1312 /* process any acks */ 1313 if (!ixgbe_check_for_ack(hw, vf)) 1314 ixgbe_rcv_ack_from_vf(adapter, vf); 1315 } 1316 } 1317 1318 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1319 { 1320 struct ixgbe_hw *hw = &adapter->hw; 1321 1322 /* disable transmit and receive for all vfs */ 1323 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1324 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1325 1326 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1327 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1328 } 1329 1330 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf) 1331 { 1332 struct ixgbe_hw *hw = &adapter->hw; 1333 u32 ping; 1334 1335 ping = IXGBE_PF_CONTROL_MSG; 1336 if (adapter->vfinfo[vf].clear_to_send) 1337 ping |= IXGBE_VT_MSGTYPE_CTS; 1338 ixgbe_write_mbx(hw, &ping, 1, vf); 1339 } 1340 1341 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1342 { 1343 struct ixgbe_hw *hw = &adapter->hw; 1344 u32 ping; 1345 int i; 1346 1347 for (i = 0 ; i < adapter->num_vfs; i++) { 1348 ping = IXGBE_PF_CONTROL_MSG; 1349 if (adapter->vfinfo[i].clear_to_send) 1350 ping |= IXGBE_VT_MSGTYPE_CTS; 1351 ixgbe_write_mbx(hw, &ping, 1, i); 1352 } 1353 } 1354 1355 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1356 { 1357 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1358 s32 retval; 1359 1360 if (vf >= adapter->num_vfs) 1361 return -EINVAL; 1362 1363 if (is_valid_ether_addr(mac)) { 1364 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", 1365 mac, vf); 1366 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective."); 1367 1368 retval = ixgbe_set_vf_mac(adapter, vf, mac); 1369 if (retval >= 0) { 1370 adapter->vfinfo[vf].pf_set_mac = true; 1371 1372 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1373 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n"); 1374 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n"); 1375 } 1376 } else { 1377 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n"); 1378 } 1379 } else if (is_zero_ether_addr(mac)) { 1380 unsigned char *vf_mac_addr = 1381 adapter->vfinfo[vf].vf_mac_addresses; 1382 1383 /* nothing to do */ 1384 if (is_zero_ether_addr(vf_mac_addr)) 1385 return 0; 1386 1387 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf); 1388 1389 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf); 1390 if (retval >= 0) { 1391 adapter->vfinfo[vf].pf_set_mac = false; 1392 memcpy(vf_mac_addr, mac, ETH_ALEN); 1393 } else { 1394 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n"); 1395 } 1396 } else { 1397 retval = -EINVAL; 1398 } 1399 1400 return retval; 1401 } 1402 1403 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1404 u16 vlan, u8 qos) 1405 { 1406 struct ixgbe_hw *hw = &adapter->hw; 1407 int err; 1408 1409 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1410 if (err) 1411 goto out; 1412 1413 /* Revoke tagless access via VLAN 0 */ 1414 ixgbe_set_vf_vlan(adapter, false, 0, vf); 1415 1416 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1417 ixgbe_set_vmolr(hw, vf, false); 1418 1419 /* enable hide vlan on X550 */ 1420 if (hw->mac.type >= ixgbe_mac_X550) 1421 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1422 IXGBE_QDE_HIDE_VLAN); 1423 1424 adapter->vfinfo[vf].pf_vlan = vlan; 1425 adapter->vfinfo[vf].pf_qos = qos; 1426 dev_info(&adapter->pdev->dev, 1427 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1428 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1429 dev_warn(&adapter->pdev->dev, 1430 "The VF VLAN has been set, but the PF device is not up.\n"); 1431 dev_warn(&adapter->pdev->dev, 1432 "Bring the PF device up before attempting to use the VF device.\n"); 1433 } 1434 1435 out: 1436 return err; 1437 } 1438 1439 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1440 { 1441 struct ixgbe_hw *hw = &adapter->hw; 1442 int err; 1443 1444 err = ixgbe_set_vf_vlan(adapter, false, 1445 adapter->vfinfo[vf].pf_vlan, vf); 1446 /* Restore tagless access via VLAN 0 */ 1447 ixgbe_set_vf_vlan(adapter, true, 0, vf); 1448 ixgbe_clear_vmvir(adapter, vf); 1449 ixgbe_set_vmolr(hw, vf, true); 1450 1451 /* disable hide VLAN on X550 */ 1452 if (hw->mac.type >= ixgbe_mac_X550) 1453 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1454 1455 adapter->vfinfo[vf].pf_vlan = 0; 1456 adapter->vfinfo[vf].pf_qos = 0; 1457 1458 return err; 1459 } 1460 1461 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, 1462 u8 qos, __be16 vlan_proto) 1463 { 1464 int err = 0; 1465 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1466 1467 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1468 return -EINVAL; 1469 if (vlan_proto != htons(ETH_P_8021Q)) 1470 return -EPROTONOSUPPORT; 1471 if (vlan || qos) { 1472 /* Check if there is already a port VLAN set, if so 1473 * we have to delete the old one first before we 1474 * can set the new one. The usage model had 1475 * previously assumed the user would delete the 1476 * old port VLAN before setting a new one but this 1477 * is not necessarily the case. 1478 */ 1479 if (adapter->vfinfo[vf].pf_vlan) 1480 err = ixgbe_disable_port_vlan(adapter, vf); 1481 if (err) 1482 goto out; 1483 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1484 } else { 1485 err = ixgbe_disable_port_vlan(adapter, vf); 1486 } 1487 1488 out: 1489 return err; 1490 } 1491 1492 int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1493 { 1494 switch (adapter->link_speed) { 1495 case IXGBE_LINK_SPEED_100_FULL: 1496 return 100; 1497 case IXGBE_LINK_SPEED_1GB_FULL: 1498 return 1000; 1499 case IXGBE_LINK_SPEED_10GB_FULL: 1500 return 10000; 1501 default: 1502 return 0; 1503 } 1504 } 1505 1506 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1507 { 1508 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1509 struct ixgbe_hw *hw = &adapter->hw; 1510 u32 bcnrc_val = 0; 1511 u16 queue, queues_per_pool; 1512 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1513 1514 if (tx_rate) { 1515 /* start with base link speed value */ 1516 bcnrc_val = adapter->vf_rate_link_speed; 1517 1518 /* Calculate the rate factor values to set */ 1519 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1520 bcnrc_val /= tx_rate; 1521 1522 /* clear everything but the rate factor */ 1523 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1524 IXGBE_RTTBCNRC_RF_DEC_MASK; 1525 1526 /* enable the rate scheduler */ 1527 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1528 } 1529 1530 /* 1531 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1532 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1533 * and 0x004 otherwise. 1534 */ 1535 switch (hw->mac.type) { 1536 case ixgbe_mac_82599EB: 1537 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1538 break; 1539 case ixgbe_mac_X540: 1540 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1541 break; 1542 default: 1543 break; 1544 } 1545 1546 /* determine how many queues per pool based on VMDq mask */ 1547 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1548 1549 /* write value for all Tx queues belonging to VF */ 1550 for (queue = 0; queue < queues_per_pool; queue++) { 1551 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1552 1553 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1554 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1555 } 1556 } 1557 1558 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1559 { 1560 int i; 1561 1562 /* VF Tx rate limit was not set */ 1563 if (!adapter->vf_rate_link_speed) 1564 return; 1565 1566 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1567 adapter->vf_rate_link_speed = 0; 1568 dev_info(&adapter->pdev->dev, 1569 "Link speed has been changed. VF Transmit rate is disabled\n"); 1570 } 1571 1572 for (i = 0; i < adapter->num_vfs; i++) { 1573 if (!adapter->vf_rate_link_speed) 1574 adapter->vfinfo[i].tx_rate = 0; 1575 1576 ixgbe_set_vf_rate_limit(adapter, i); 1577 } 1578 } 1579 1580 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1581 int max_tx_rate) 1582 { 1583 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1584 int link_speed; 1585 1586 /* verify VF is active */ 1587 if (vf >= adapter->num_vfs) 1588 return -EINVAL; 1589 1590 /* verify link is up */ 1591 if (!adapter->link_up) 1592 return -EINVAL; 1593 1594 /* verify we are linked at 10Gbps */ 1595 link_speed = ixgbe_link_mbps(adapter); 1596 if (link_speed != 10000) 1597 return -EINVAL; 1598 1599 if (min_tx_rate) 1600 return -EINVAL; 1601 1602 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1603 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1604 return -EINVAL; 1605 1606 /* store values */ 1607 adapter->vf_rate_link_speed = link_speed; 1608 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1609 1610 /* update hardware configuration */ 1611 ixgbe_set_vf_rate_limit(adapter, vf); 1612 1613 return 0; 1614 } 1615 1616 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1617 { 1618 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1619 struct ixgbe_hw *hw = &adapter->hw; 1620 1621 if (vf >= adapter->num_vfs) 1622 return -EINVAL; 1623 1624 adapter->vfinfo[vf].spoofchk_enabled = setting; 1625 1626 /* configure MAC spoofing */ 1627 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf); 1628 1629 /* configure VLAN spoofing */ 1630 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf); 1631 1632 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be 1633 * calling set_ethertype_anti_spoofing for each VF in loop below 1634 */ 1635 if (hw->mac.ops.set_ethertype_anti_spoofing) { 1636 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP), 1637 (IXGBE_ETQF_FILTER_EN | 1638 IXGBE_ETQF_TX_ANTISPOOF | 1639 IXGBE_ETH_P_LLDP)); 1640 1641 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC), 1642 (IXGBE_ETQF_FILTER_EN | 1643 IXGBE_ETQF_TX_ANTISPOOF | 1644 ETH_P_PAUSE)); 1645 1646 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf); 1647 } 1648 1649 return 0; 1650 } 1651 1652 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, 1653 bool setting) 1654 { 1655 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1656 1657 /* This operation is currently supported only for 82599 and x540 1658 * devices. 1659 */ 1660 if (adapter->hw.mac.type < ixgbe_mac_82599EB || 1661 adapter->hw.mac.type >= ixgbe_mac_X550) 1662 return -EOPNOTSUPP; 1663 1664 if (vf >= adapter->num_vfs) 1665 return -EINVAL; 1666 1667 adapter->vfinfo[vf].rss_query_enabled = setting; 1668 1669 return 0; 1670 } 1671 1672 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) 1673 { 1674 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1675 1676 if (vf >= adapter->num_vfs) 1677 return -EINVAL; 1678 1679 /* nothing to do */ 1680 if (adapter->vfinfo[vf].trusted == setting) 1681 return 0; 1682 1683 adapter->vfinfo[vf].trusted = setting; 1684 1685 /* reset VF to reconfigure features */ 1686 adapter->vfinfo[vf].clear_to_send = false; 1687 ixgbe_ping_vf(adapter, vf); 1688 1689 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not "); 1690 1691 return 0; 1692 } 1693 1694 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1695 int vf, struct ifla_vf_info *ivi) 1696 { 1697 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1698 if (vf >= adapter->num_vfs) 1699 return -EINVAL; 1700 ivi->vf = vf; 1701 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1702 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1703 ivi->min_tx_rate = 0; 1704 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1705 ivi->qos = adapter->vfinfo[vf].pf_qos; 1706 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1707 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; 1708 ivi->trusted = adapter->vfinfo[vf].trusted; 1709 return 0; 1710 } 1711