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