1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2013 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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 25 26 *******************************************************************************/ 27 28 #include <linux/types.h> 29 #include <linux/module.h> 30 #include <linux/pci.h> 31 #include <linux/netdevice.h> 32 #include <linux/vmalloc.h> 33 #include <linux/string.h> 34 #include <linux/in.h> 35 #include <linux/ip.h> 36 #include <linux/tcp.h> 37 #include <linux/ipv6.h> 38 #ifdef NETIF_F_HW_VLAN_CTAG_TX 39 #include <linux/if_vlan.h> 40 #endif 41 42 #include "ixgbe.h" 43 #include "ixgbe_type.h" 44 #include "ixgbe_sriov.h" 45 46 #ifdef CONFIG_PCI_IOV 47 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter) 48 { 49 struct ixgbe_hw *hw = &adapter->hw; 50 int num_vf_macvlans, i; 51 struct vf_macvlans *mv_list; 52 53 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; 54 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs); 55 56 /* Enable VMDq flag so device will be set in VM mode */ 57 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED; 58 if (!adapter->ring_feature[RING_F_VMDQ].limit) 59 adapter->ring_feature[RING_F_VMDQ].limit = 1; 60 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs; 61 62 num_vf_macvlans = hw->mac.num_rar_entries - 63 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs); 64 65 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans, 66 sizeof(struct vf_macvlans), 67 GFP_KERNEL); 68 if (mv_list) { 69 /* Initialize list of VF macvlans */ 70 INIT_LIST_HEAD(&adapter->vf_mvs.l); 71 for (i = 0; i < num_vf_macvlans; i++) { 72 mv_list->vf = -1; 73 mv_list->free = true; 74 mv_list->rar_entry = hw->mac.num_rar_entries - 75 (i + adapter->num_vfs + 1); 76 list_add(&mv_list->l, &adapter->vf_mvs.l); 77 mv_list++; 78 } 79 } 80 81 /* Initialize default switching mode VEB */ 82 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 83 adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB; 84 85 /* If call to enable VFs succeeded then allocate memory 86 * for per VF control structures. 87 */ 88 adapter->vfinfo = 89 kcalloc(adapter->num_vfs, 90 sizeof(struct vf_data_storage), GFP_KERNEL); 91 if (adapter->vfinfo) { 92 /* limit trafffic classes based on VFs enabled */ 93 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && 94 (adapter->num_vfs < 16)) { 95 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 96 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 97 } else if (adapter->num_vfs < 32) { 98 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 99 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 100 } else { 101 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 102 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 103 } 104 105 /* We do not support RSS w/ SR-IOV */ 106 adapter->ring_feature[RING_F_RSS].limit = 1; 107 108 /* Disable RSC when in SR-IOV mode */ 109 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 110 IXGBE_FLAG2_RSC_ENABLED); 111 112 /* enable spoof checking for all VFs */ 113 for (i = 0; i < adapter->num_vfs; i++) 114 adapter->vfinfo[i].spoofchk_enabled = true; 115 return 0; 116 } 117 118 return -ENOMEM; 119 } 120 121 /* Note this function is called when the user wants to enable SR-IOV 122 * VFs using the now deprecated module parameter 123 */ 124 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter) 125 { 126 int pre_existing_vfs = 0; 127 128 pre_existing_vfs = pci_num_vf(adapter->pdev); 129 if (!pre_existing_vfs && !adapter->num_vfs) 130 return; 131 132 /* If there are pre-existing VFs then we have to force 133 * use of that many - over ride any module parameter value. 134 * This may result from the user unloading the PF driver 135 * while VFs were assigned to guest VMs or because the VFs 136 * have been created via the new PCI SR-IOV sysfs interface. 137 */ 138 if (pre_existing_vfs) { 139 adapter->num_vfs = pre_existing_vfs; 140 dev_warn(&adapter->pdev->dev, 141 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); 142 } else { 143 int err; 144 /* 145 * The 82599 supports up to 64 VFs per physical function 146 * but this implementation limits allocation to 63 so that 147 * basic networking resources are still available to the 148 * physical function. If the user requests greater thn 149 * 63 VFs then it is an error - reset to default of zero. 150 */ 151 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT); 152 153 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); 154 if (err) { 155 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 156 adapter->num_vfs = 0; 157 return; 158 } 159 } 160 161 if (!__ixgbe_enable_sriov(adapter)) 162 return; 163 164 /* If we have gotten to this point then there is no memory available 165 * to manage the VF devices - print message and bail. 166 */ 167 e_err(probe, "Unable to allocate memory for VF Data Storage - " 168 "SRIOV disabled\n"); 169 ixgbe_disable_sriov(adapter); 170 } 171 172 #endif /* #ifdef CONFIG_PCI_IOV */ 173 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 174 { 175 struct ixgbe_hw *hw = &adapter->hw; 176 u32 gpie; 177 u32 vmdctl; 178 int rss; 179 180 /* set num VFs to 0 to prevent access to vfinfo */ 181 adapter->num_vfs = 0; 182 183 /* free VF control structures */ 184 kfree(adapter->vfinfo); 185 adapter->vfinfo = NULL; 186 187 /* free macvlan list */ 188 kfree(adapter->mv_list); 189 adapter->mv_list = NULL; 190 191 /* if SR-IOV is already disabled then there is nothing to do */ 192 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 193 return 0; 194 195 #ifdef CONFIG_PCI_IOV 196 /* 197 * If our VFs are assigned we cannot shut down SR-IOV 198 * without causing issues, so just leave the hardware 199 * available but disabled 200 */ 201 if (pci_vfs_assigned(adapter->pdev)) { 202 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 203 return -EPERM; 204 } 205 /* disable iov and allow time for transactions to clear */ 206 pci_disable_sriov(adapter->pdev); 207 #endif 208 209 /* turn off device IOV mode */ 210 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0); 211 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 212 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 213 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 214 215 /* set default pool back to 0 */ 216 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 217 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 218 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 219 IXGBE_WRITE_FLUSH(hw); 220 221 /* Disable VMDq flag so device will be set in VM mode */ 222 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) { 223 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 224 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 225 rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus()); 226 } else { 227 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 228 } 229 230 adapter->ring_feature[RING_F_VMDQ].offset = 0; 231 adapter->ring_feature[RING_F_RSS].limit = rss; 232 233 /* take a breather then clean up driver data */ 234 msleep(100); 235 return 0; 236 } 237 238 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 239 { 240 #ifdef CONFIG_PCI_IOV 241 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 242 int err = 0; 243 int i; 244 int pre_existing_vfs = pci_num_vf(dev); 245 246 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 247 err = ixgbe_disable_sriov(adapter); 248 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 249 goto out; 250 251 if (err) 252 goto err_out; 253 254 /* While the SR-IOV capability structure reports total VFs to be 255 * 64 we limit the actual number that can be allocated to 63 so 256 * that some transmit/receive resources can be reserved to the 257 * PF. The PCI bus driver already checks for other values out of 258 * range. 259 */ 260 if (num_vfs > IXGBE_MAX_VFS_DRV_LIMIT) { 261 err = -EPERM; 262 goto err_out; 263 } 264 265 adapter->num_vfs = num_vfs; 266 267 err = __ixgbe_enable_sriov(adapter); 268 if (err) 269 goto err_out; 270 271 for (i = 0; i < adapter->num_vfs; i++) 272 ixgbe_vf_configuration(dev, (i | 0x10000000)); 273 274 err = pci_enable_sriov(dev, num_vfs); 275 if (err) { 276 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 277 goto err_out; 278 } 279 ixgbe_sriov_reinit(adapter); 280 281 out: 282 return num_vfs; 283 284 err_out: 285 return err; 286 #endif 287 return 0; 288 } 289 290 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 291 { 292 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 293 int err; 294 #ifdef CONFIG_PCI_IOV 295 u32 current_flags = adapter->flags; 296 #endif 297 298 err = ixgbe_disable_sriov(adapter); 299 300 /* Only reinit if no error and state changed */ 301 #ifdef CONFIG_PCI_IOV 302 if (!err && current_flags != adapter->flags) 303 ixgbe_sriov_reinit(adapter); 304 #endif 305 306 return err; 307 } 308 309 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 310 { 311 if (num_vfs == 0) 312 return ixgbe_pci_sriov_disable(dev); 313 else 314 return ixgbe_pci_sriov_enable(dev, num_vfs); 315 } 316 317 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 318 u32 *msgbuf, u32 vf) 319 { 320 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 321 >> IXGBE_VT_MSGINFO_SHIFT; 322 u16 *hash_list = (u16 *)&msgbuf[1]; 323 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 324 struct ixgbe_hw *hw = &adapter->hw; 325 int i; 326 u32 vector_bit; 327 u32 vector_reg; 328 u32 mta_reg; 329 330 /* only so many hash values supported */ 331 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 332 333 /* 334 * salt away the number of multi cast addresses assigned 335 * to this VF for later use to restore when the PF multi cast 336 * list changes 337 */ 338 vfinfo->num_vf_mc_hashes = entries; 339 340 /* 341 * VFs are limited to using the MTA hash table for their multicast 342 * addresses 343 */ 344 for (i = 0; i < entries; i++) { 345 vfinfo->vf_mc_hashes[i] = hash_list[i]; 346 } 347 348 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 349 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 350 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 351 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 352 mta_reg |= (1 << vector_bit); 353 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 354 } 355 356 return 0; 357 } 358 359 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter) 360 { 361 struct ixgbe_hw *hw = &adapter->hw; 362 struct list_head *pos; 363 struct vf_macvlans *entry; 364 365 list_for_each(pos, &adapter->vf_mvs.l) { 366 entry = list_entry(pos, struct vf_macvlans, l); 367 if (!entry->free) 368 hw->mac.ops.set_rar(hw, entry->rar_entry, 369 entry->vf_macvlan, 370 entry->vf, IXGBE_RAH_AV); 371 } 372 } 373 374 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 375 { 376 struct ixgbe_hw *hw = &adapter->hw; 377 struct vf_data_storage *vfinfo; 378 int i, j; 379 u32 vector_bit; 380 u32 vector_reg; 381 u32 mta_reg; 382 383 for (i = 0; i < adapter->num_vfs; i++) { 384 vfinfo = &adapter->vfinfo[i]; 385 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 386 hw->addr_ctrl.mta_in_use++; 387 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 388 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 389 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 390 mta_reg |= (1 << vector_bit); 391 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 392 } 393 } 394 395 /* Restore any VF macvlans */ 396 ixgbe_restore_vf_macvlans(adapter); 397 } 398 399 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 400 u32 vf) 401 { 402 /* VLAN 0 is a special case, don't allow it to be removed */ 403 if (!vid && !add) 404 return 0; 405 406 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 407 } 408 409 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 410 { 411 struct ixgbe_hw *hw = &adapter->hw; 412 int max_frame = msgbuf[1]; 413 u32 max_frs; 414 415 /* 416 * For 82599EB we have to keep all PFs and VFs operating with 417 * the same max_frame value in order to avoid sending an oversize 418 * frame to a VF. In order to guarantee this is handled correctly 419 * for all cases we have several special exceptions to take into 420 * account before we can enable the VF for receive 421 */ 422 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 423 struct net_device *dev = adapter->netdev; 424 int pf_max_frame = dev->mtu + ETH_HLEN; 425 u32 reg_offset, vf_shift, vfre; 426 s32 err = 0; 427 428 #ifdef CONFIG_FCOE 429 if (dev->features & NETIF_F_FCOE_MTU) 430 pf_max_frame = max_t(int, pf_max_frame, 431 IXGBE_FCOE_JUMBO_FRAME_SIZE); 432 433 #endif /* CONFIG_FCOE */ 434 switch (adapter->vfinfo[vf].vf_api) { 435 case ixgbe_mbox_api_11: 436 /* 437 * Version 1.1 supports jumbo frames on VFs if PF has 438 * jumbo frames enabled which means legacy VFs are 439 * disabled 440 */ 441 if (pf_max_frame > ETH_FRAME_LEN) 442 break; 443 default: 444 /* 445 * If the PF or VF are running w/ jumbo frames enabled 446 * we need to shut down the VF Rx path as we cannot 447 * support jumbo frames on legacy VFs 448 */ 449 if ((pf_max_frame > ETH_FRAME_LEN) || 450 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 451 err = -EINVAL; 452 break; 453 } 454 455 /* determine VF receive enable location */ 456 vf_shift = vf % 32; 457 reg_offset = vf / 32; 458 459 /* enable or disable receive depending on error */ 460 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 461 if (err) 462 vfre &= ~(1 << vf_shift); 463 else 464 vfre |= 1 << vf_shift; 465 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 466 467 if (err) { 468 e_err(drv, "VF max_frame %d out of range\n", max_frame); 469 return err; 470 } 471 } 472 473 /* MTU < 68 is an error and causes problems on some kernels */ 474 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 475 e_err(drv, "VF max_frame %d out of range\n", max_frame); 476 return -EINVAL; 477 } 478 479 /* pull current max frame size from hardware */ 480 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 481 max_frs &= IXGBE_MHADD_MFS_MASK; 482 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 483 484 if (max_frs < max_frame) { 485 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 486 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 487 } 488 489 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 490 491 return 0; 492 } 493 494 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 495 { 496 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 497 vmolr |= (IXGBE_VMOLR_ROMPE | 498 IXGBE_VMOLR_BAM); 499 if (aupe) 500 vmolr |= IXGBE_VMOLR_AUPE; 501 else 502 vmolr &= ~IXGBE_VMOLR_AUPE; 503 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 504 } 505 506 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 507 { 508 struct ixgbe_hw *hw = &adapter->hw; 509 510 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 511 } 512 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 513 { 514 struct ixgbe_hw *hw = &adapter->hw; 515 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 516 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 517 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 518 519 /* add PF assigned VLAN or VLAN 0 */ 520 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 521 522 /* reset offloads to defaults */ 523 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 524 525 /* set outgoing tags for VFs */ 526 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 527 ixgbe_clear_vmvir(adapter, vf); 528 } else { 529 if (vfinfo->pf_qos || !num_tcs) 530 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 531 vfinfo->pf_qos, vf); 532 else 533 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 534 adapter->default_up, vf); 535 536 if (vfinfo->spoofchk_enabled) 537 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 538 } 539 540 /* reset multicast table array for vf */ 541 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 542 543 /* Flush and reset the mta with the new values */ 544 ixgbe_set_rx_mode(adapter->netdev); 545 546 hw->mac.ops.clear_rar(hw, rar_entry); 547 548 /* reset VF api back to unknown */ 549 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 550 } 551 552 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 553 int vf, unsigned char *mac_addr) 554 { 555 struct ixgbe_hw *hw = &adapter->hw; 556 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 557 558 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN); 559 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV); 560 561 return 0; 562 } 563 564 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 565 int vf, int index, unsigned char *mac_addr) 566 { 567 struct ixgbe_hw *hw = &adapter->hw; 568 struct list_head *pos; 569 struct vf_macvlans *entry; 570 571 if (index <= 1) { 572 list_for_each(pos, &adapter->vf_mvs.l) { 573 entry = list_entry(pos, struct vf_macvlans, l); 574 if (entry->vf == vf) { 575 entry->vf = -1; 576 entry->free = true; 577 entry->is_macvlan = false; 578 hw->mac.ops.clear_rar(hw, entry->rar_entry); 579 } 580 } 581 } 582 583 /* 584 * If index was zero then we were asked to clear the uc list 585 * for the VF. We're done. 586 */ 587 if (!index) 588 return 0; 589 590 entry = NULL; 591 592 list_for_each(pos, &adapter->vf_mvs.l) { 593 entry = list_entry(pos, struct vf_macvlans, l); 594 if (entry->free) 595 break; 596 } 597 598 /* 599 * If we traversed the entire list and didn't find a free entry 600 * then we're out of space on the RAR table. Also entry may 601 * be NULL because the original memory allocation for the list 602 * failed, which is not fatal but does mean we can't support 603 * VF requests for MACVLAN because we couldn't allocate 604 * memory for the list management required. 605 */ 606 if (!entry || !entry->free) 607 return -ENOSPC; 608 609 entry->free = false; 610 entry->is_macvlan = true; 611 entry->vf = vf; 612 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 613 614 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV); 615 616 return 0; 617 } 618 619 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 620 { 621 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 622 unsigned int vfn = (event_mask & 0x3f); 623 624 bool enable = ((event_mask & 0x10000000U) != 0); 625 626 if (enable) 627 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 628 629 return 0; 630 } 631 632 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 633 { 634 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 635 struct ixgbe_hw *hw = &adapter->hw; 636 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 637 u32 reg, reg_offset, vf_shift; 638 u32 msgbuf[4] = {0, 0, 0, 0}; 639 u8 *addr = (u8 *)(&msgbuf[1]); 640 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 641 int i; 642 643 e_info(probe, "VF Reset msg received from vf %d\n", vf); 644 645 /* reset the filters for the device */ 646 ixgbe_vf_reset_event(adapter, vf); 647 648 /* set vf mac address */ 649 if (!is_zero_ether_addr(vf_mac)) 650 ixgbe_set_vf_mac(adapter, vf, vf_mac); 651 652 vf_shift = vf % 32; 653 reg_offset = vf / 32; 654 655 /* enable transmit for vf */ 656 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 657 reg |= 1 << vf_shift; 658 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 659 660 /* force drop enable for all VF Rx queues */ 661 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 662 /* flush previous write */ 663 IXGBE_WRITE_FLUSH(hw); 664 665 /* indicate to hardware that we want to set drop enable */ 666 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE; 667 reg |= i << IXGBE_QDE_IDX_SHIFT; 668 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 669 } 670 671 /* enable receive for vf */ 672 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 673 reg |= 1 << vf_shift; 674 /* 675 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 676 * For more info take a look at ixgbe_set_vf_lpe 677 */ 678 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 679 struct net_device *dev = adapter->netdev; 680 int pf_max_frame = dev->mtu + ETH_HLEN; 681 682 #ifdef CONFIG_FCOE 683 if (dev->features & NETIF_F_FCOE_MTU) 684 pf_max_frame = max_t(int, pf_max_frame, 685 IXGBE_FCOE_JUMBO_FRAME_SIZE); 686 687 #endif /* CONFIG_FCOE */ 688 if (pf_max_frame > ETH_FRAME_LEN) 689 reg &= ~(1 << vf_shift); 690 } 691 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 692 693 /* enable VF mailbox for further messages */ 694 adapter->vfinfo[vf].clear_to_send = true; 695 696 /* Enable counting of spoofed packets in the SSVPC register */ 697 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 698 reg |= (1 << vf_shift); 699 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 700 701 /* 702 * Reset the VFs TDWBAL and TDWBAH registers 703 * which are not cleared by an FLR 704 */ 705 for (i = 0; i < q_per_pool; i++) { 706 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 707 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 708 } 709 710 /* reply to reset with ack and vf mac address */ 711 msgbuf[0] = IXGBE_VF_RESET; 712 if (!is_zero_ether_addr(vf_mac)) { 713 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 714 memcpy(addr, vf_mac, ETH_ALEN); 715 } else { 716 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 717 dev_warn(&adapter->pdev->dev, 718 "VF %d has no MAC address assigned, you may have to assign one manually\n", 719 vf); 720 } 721 722 /* 723 * Piggyback the multicast filter type so VF can compute the 724 * correct vectors 725 */ 726 msgbuf[3] = hw->mac.mc_filter_type; 727 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 728 729 return 0; 730 } 731 732 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 733 u32 *msgbuf, u32 vf) 734 { 735 u8 *new_mac = ((u8 *)(&msgbuf[1])); 736 737 if (!is_valid_ether_addr(new_mac)) { 738 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 739 return -1; 740 } 741 742 if (adapter->vfinfo[vf].pf_set_mac && 743 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 744 e_warn(drv, 745 "VF %d attempted to override administratively set MAC address\n" 746 "Reload the VF driver to resume operations\n", 747 vf); 748 return -1; 749 } 750 751 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 752 } 753 754 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) 755 { 756 u32 vlvf; 757 s32 regindex; 758 759 /* short cut the special case */ 760 if (vlan == 0) 761 return 0; 762 763 /* Search for the vlan id in the VLVF entries */ 764 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) { 765 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex)); 766 if ((vlvf & VLAN_VID_MASK) == vlan) 767 break; 768 } 769 770 /* Return a negative value if not found */ 771 if (regindex >= IXGBE_VLVF_ENTRIES) 772 regindex = -1; 773 774 return regindex; 775 } 776 777 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 778 u32 *msgbuf, u32 vf) 779 { 780 struct ixgbe_hw *hw = &adapter->hw; 781 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 782 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 783 int err; 784 s32 reg_ndx; 785 u32 vlvf; 786 u32 bits; 787 u8 tcs = netdev_get_num_tc(adapter->netdev); 788 789 if (adapter->vfinfo[vf].pf_vlan || tcs) { 790 e_warn(drv, 791 "VF %d attempted to override administratively set VLAN configuration\n" 792 "Reload the VF driver to resume operations\n", 793 vf); 794 return -1; 795 } 796 797 if (add) 798 adapter->vfinfo[vf].vlan_count++; 799 else if (adapter->vfinfo[vf].vlan_count) 800 adapter->vfinfo[vf].vlan_count--; 801 802 /* in case of promiscuous mode any VLAN filter set for a VF must 803 * also have the PF pool added to it. 804 */ 805 if (add && adapter->netdev->flags & IFF_PROMISC) 806 err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0)); 807 808 err = ixgbe_set_vf_vlan(adapter, add, vid, vf); 809 if (!err && adapter->vfinfo[vf].spoofchk_enabled) 810 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 811 812 /* Go through all the checks to see if the VLAN filter should 813 * be wiped completely. 814 */ 815 if (!add && adapter->netdev->flags & IFF_PROMISC) { 816 reg_ndx = ixgbe_find_vlvf_entry(hw, vid); 817 if (reg_ndx < 0) 818 goto out; 819 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx)); 820 /* See if any other pools are set for this VLAN filter 821 * entry other than the PF. 822 */ 823 if (VMDQ_P(0) < 32) { 824 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2)); 825 bits &= ~(1 << VMDQ_P(0)); 826 bits |= IXGBE_READ_REG(hw, 827 IXGBE_VLVFB(reg_ndx * 2) + 1); 828 } else { 829 bits = IXGBE_READ_REG(hw, 830 IXGBE_VLVFB(reg_ndx * 2) + 1); 831 bits &= ~(1 << (VMDQ_P(0) - 32)); 832 bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2)); 833 } 834 835 /* If the filter was removed then ensure PF pool bit 836 * is cleared if the PF only added itself to the pool 837 * because the PF is in promiscuous mode. 838 */ 839 if ((vlvf & VLAN_VID_MASK) == vid && 840 !test_bit(vid, adapter->active_vlans) && !bits) 841 ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0)); 842 } 843 844 out: 845 846 return err; 847 } 848 849 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 850 u32 *msgbuf, u32 vf) 851 { 852 u8 *new_mac = ((u8 *)(&msgbuf[1])); 853 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 854 IXGBE_VT_MSGINFO_SHIFT; 855 int err; 856 857 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 858 e_warn(drv, 859 "VF %d requested MACVLAN filter but is administratively denied\n", 860 vf); 861 return -1; 862 } 863 864 /* An non-zero index indicates the VF is setting a filter */ 865 if (index) { 866 if (!is_valid_ether_addr(new_mac)) { 867 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 868 return -1; 869 } 870 871 /* 872 * If the VF is allowed to set MAC filters then turn off 873 * anti-spoofing to avoid false positives. 874 */ 875 if (adapter->vfinfo[vf].spoofchk_enabled) 876 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 877 } 878 879 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 880 if (err == -ENOSPC) 881 e_warn(drv, 882 "VF %d has requested a MACVLAN filter but there is no space for it\n", 883 vf); 884 885 return err < 0; 886 } 887 888 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 889 u32 *msgbuf, u32 vf) 890 { 891 int api = msgbuf[1]; 892 893 switch (api) { 894 case ixgbe_mbox_api_10: 895 case ixgbe_mbox_api_11: 896 adapter->vfinfo[vf].vf_api = api; 897 return 0; 898 default: 899 break; 900 } 901 902 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 903 904 return -1; 905 } 906 907 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 908 u32 *msgbuf, u32 vf) 909 { 910 struct net_device *dev = adapter->netdev; 911 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 912 unsigned int default_tc = 0; 913 u8 num_tcs = netdev_get_num_tc(dev); 914 915 /* verify the PF is supporting the correct APIs */ 916 switch (adapter->vfinfo[vf].vf_api) { 917 case ixgbe_mbox_api_20: 918 case ixgbe_mbox_api_11: 919 break; 920 default: 921 return -1; 922 } 923 924 /* only allow 1 Tx queue for bandwidth limiting */ 925 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 926 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 927 928 /* if TCs > 1 determine which TC belongs to default user priority */ 929 if (num_tcs > 1) 930 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 931 932 /* notify VF of need for VLAN tag stripping, and correct queue */ 933 if (num_tcs) 934 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 935 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 936 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 937 else 938 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 939 940 /* notify VF of default queue */ 941 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 942 943 return 0; 944 } 945 946 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 947 { 948 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 949 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 950 struct ixgbe_hw *hw = &adapter->hw; 951 s32 retval; 952 953 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 954 955 if (retval) { 956 pr_err("Error receiving message from VF\n"); 957 return retval; 958 } 959 960 /* this is a message we already processed, do nothing */ 961 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 962 return retval; 963 964 /* flush the ack before we write any messages back */ 965 IXGBE_WRITE_FLUSH(hw); 966 967 if (msgbuf[0] == IXGBE_VF_RESET) 968 return ixgbe_vf_reset_msg(adapter, vf); 969 970 /* 971 * until the vf completes a virtual function reset it should not be 972 * allowed to start any configuration. 973 */ 974 if (!adapter->vfinfo[vf].clear_to_send) { 975 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 976 ixgbe_write_mbx(hw, msgbuf, 1, vf); 977 return retval; 978 } 979 980 switch ((msgbuf[0] & 0xFFFF)) { 981 case IXGBE_VF_SET_MAC_ADDR: 982 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 983 break; 984 case IXGBE_VF_SET_MULTICAST: 985 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 986 break; 987 case IXGBE_VF_SET_VLAN: 988 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 989 break; 990 case IXGBE_VF_SET_LPE: 991 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 992 break; 993 case IXGBE_VF_SET_MACVLAN: 994 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 995 break; 996 case IXGBE_VF_API_NEGOTIATE: 997 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 998 break; 999 case IXGBE_VF_GET_QUEUES: 1000 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1001 break; 1002 default: 1003 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1004 retval = IXGBE_ERR_MBX; 1005 break; 1006 } 1007 1008 /* notify the VF of the results of what it sent us */ 1009 if (retval) 1010 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1011 else 1012 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1013 1014 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1015 1016 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1017 1018 return retval; 1019 } 1020 1021 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1022 { 1023 struct ixgbe_hw *hw = &adapter->hw; 1024 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1025 1026 /* if device isn't clear to send it shouldn't be reading either */ 1027 if (!adapter->vfinfo[vf].clear_to_send) 1028 ixgbe_write_mbx(hw, &msg, 1, vf); 1029 } 1030 1031 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1032 { 1033 struct ixgbe_hw *hw = &adapter->hw; 1034 u32 vf; 1035 1036 for (vf = 0; vf < adapter->num_vfs; vf++) { 1037 /* process any reset requests */ 1038 if (!ixgbe_check_for_rst(hw, vf)) 1039 ixgbe_vf_reset_event(adapter, vf); 1040 1041 /* process any messages pending */ 1042 if (!ixgbe_check_for_msg(hw, vf)) 1043 ixgbe_rcv_msg_from_vf(adapter, vf); 1044 1045 /* process any acks */ 1046 if (!ixgbe_check_for_ack(hw, vf)) 1047 ixgbe_rcv_ack_from_vf(adapter, vf); 1048 } 1049 } 1050 1051 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1052 { 1053 struct ixgbe_hw *hw = &adapter->hw; 1054 1055 /* disable transmit and receive for all vfs */ 1056 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1057 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1058 1059 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1060 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1061 } 1062 1063 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1064 { 1065 struct ixgbe_hw *hw = &adapter->hw; 1066 u32 ping; 1067 int i; 1068 1069 for (i = 0 ; i < adapter->num_vfs; i++) { 1070 ping = IXGBE_PF_CONTROL_MSG; 1071 if (adapter->vfinfo[i].clear_to_send) 1072 ping |= IXGBE_VT_MSGTYPE_CTS; 1073 ixgbe_write_mbx(hw, &ping, 1, i); 1074 } 1075 } 1076 1077 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1078 { 1079 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1080 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 1081 return -EINVAL; 1082 adapter->vfinfo[vf].pf_set_mac = true; 1083 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 1084 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 1085 " change effective."); 1086 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1087 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 1088 " but the PF device is not up.\n"); 1089 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 1090 " attempting to use the VF device.\n"); 1091 } 1092 return ixgbe_set_vf_mac(adapter, vf, mac); 1093 } 1094 1095 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 1096 { 1097 int err = 0; 1098 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1099 struct ixgbe_hw *hw = &adapter->hw; 1100 1101 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1102 return -EINVAL; 1103 if (vlan || qos) { 1104 if (adapter->vfinfo[vf].pf_vlan) 1105 err = ixgbe_set_vf_vlan(adapter, false, 1106 adapter->vfinfo[vf].pf_vlan, 1107 vf); 1108 if (err) 1109 goto out; 1110 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1111 if (err) 1112 goto out; 1113 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1114 ixgbe_set_vmolr(hw, vf, false); 1115 if (adapter->vfinfo[vf].spoofchk_enabled) 1116 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 1117 adapter->vfinfo[vf].vlan_count++; 1118 adapter->vfinfo[vf].pf_vlan = vlan; 1119 adapter->vfinfo[vf].pf_qos = qos; 1120 dev_info(&adapter->pdev->dev, 1121 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1122 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1123 dev_warn(&adapter->pdev->dev, 1124 "The VF VLAN has been set," 1125 " but the PF device is not up.\n"); 1126 dev_warn(&adapter->pdev->dev, 1127 "Bring the PF device up before" 1128 " attempting to use the VF device.\n"); 1129 } 1130 } else { 1131 err = ixgbe_set_vf_vlan(adapter, false, 1132 adapter->vfinfo[vf].pf_vlan, vf); 1133 ixgbe_clear_vmvir(adapter, vf); 1134 ixgbe_set_vmolr(hw, vf, true); 1135 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 1136 if (adapter->vfinfo[vf].vlan_count) 1137 adapter->vfinfo[vf].vlan_count--; 1138 adapter->vfinfo[vf].pf_vlan = 0; 1139 adapter->vfinfo[vf].pf_qos = 0; 1140 } 1141 out: 1142 return err; 1143 } 1144 1145 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1146 { 1147 switch (adapter->link_speed) { 1148 case IXGBE_LINK_SPEED_100_FULL: 1149 return 100; 1150 case IXGBE_LINK_SPEED_1GB_FULL: 1151 return 1000; 1152 case IXGBE_LINK_SPEED_10GB_FULL: 1153 return 10000; 1154 default: 1155 return 0; 1156 } 1157 } 1158 1159 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1160 { 1161 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1162 struct ixgbe_hw *hw = &adapter->hw; 1163 u32 bcnrc_val = 0; 1164 u16 queue, queues_per_pool; 1165 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1166 1167 if (tx_rate) { 1168 /* start with base link speed value */ 1169 bcnrc_val = adapter->vf_rate_link_speed; 1170 1171 /* Calculate the rate factor values to set */ 1172 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1173 bcnrc_val /= tx_rate; 1174 1175 /* clear everything but the rate factor */ 1176 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1177 IXGBE_RTTBCNRC_RF_DEC_MASK; 1178 1179 /* enable the rate scheduler */ 1180 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1181 } 1182 1183 /* 1184 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1185 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1186 * and 0x004 otherwise. 1187 */ 1188 switch (hw->mac.type) { 1189 case ixgbe_mac_82599EB: 1190 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1191 break; 1192 case ixgbe_mac_X540: 1193 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1194 break; 1195 default: 1196 break; 1197 } 1198 1199 /* determine how many queues per pool based on VMDq mask */ 1200 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1201 1202 /* write value for all Tx queues belonging to VF */ 1203 for (queue = 0; queue < queues_per_pool; queue++) { 1204 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1205 1206 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1207 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1208 } 1209 } 1210 1211 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1212 { 1213 int i; 1214 1215 /* VF Tx rate limit was not set */ 1216 if (!adapter->vf_rate_link_speed) 1217 return; 1218 1219 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1220 adapter->vf_rate_link_speed = 0; 1221 dev_info(&adapter->pdev->dev, 1222 "Link speed has been changed. VF Transmit rate is disabled\n"); 1223 } 1224 1225 for (i = 0; i < adapter->num_vfs; i++) { 1226 if (!adapter->vf_rate_link_speed) 1227 adapter->vfinfo[i].tx_rate = 0; 1228 1229 ixgbe_set_vf_rate_limit(adapter, i); 1230 } 1231 } 1232 1233 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) 1234 { 1235 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1236 int link_speed; 1237 1238 /* verify VF is active */ 1239 if (vf >= adapter->num_vfs) 1240 return -EINVAL; 1241 1242 /* verify link is up */ 1243 if (!adapter->link_up) 1244 return -EINVAL; 1245 1246 /* verify we are linked at 10Gbps */ 1247 link_speed = ixgbe_link_mbps(adapter); 1248 if (link_speed != 10000) 1249 return -EINVAL; 1250 1251 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1252 if (tx_rate && ((tx_rate <= 10) || (tx_rate > link_speed))) 1253 return -EINVAL; 1254 1255 /* store values */ 1256 adapter->vf_rate_link_speed = link_speed; 1257 adapter->vfinfo[vf].tx_rate = tx_rate; 1258 1259 /* update hardware configuration */ 1260 ixgbe_set_vf_rate_limit(adapter, vf); 1261 1262 return 0; 1263 } 1264 1265 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1266 { 1267 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1268 int vf_target_reg = vf >> 3; 1269 int vf_target_shift = vf % 8; 1270 struct ixgbe_hw *hw = &adapter->hw; 1271 u32 regval; 1272 1273 adapter->vfinfo[vf].spoofchk_enabled = setting; 1274 1275 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1276 regval &= ~(1 << vf_target_shift); 1277 regval |= (setting << vf_target_shift); 1278 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1279 1280 if (adapter->vfinfo[vf].vlan_count) { 1281 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT; 1282 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1283 regval &= ~(1 << vf_target_shift); 1284 regval |= (setting << vf_target_shift); 1285 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1286 } 1287 1288 return 0; 1289 } 1290 1291 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1292 int vf, struct ifla_vf_info *ivi) 1293 { 1294 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1295 if (vf >= adapter->num_vfs) 1296 return -EINVAL; 1297 ivi->vf = vf; 1298 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1299 ivi->tx_rate = adapter->vfinfo[vf].tx_rate; 1300 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1301 ivi->qos = adapter->vfinfo[vf].pf_qos; 1302 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1303 return 0; 1304 } 1305