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