1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2014 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 return num_vfs; 249 250 if (err) 251 return err; 252 253 /* While the SR-IOV capability structure reports total VFs to be 64, 254 * we have to limit the actual number allocated based on two factors. 255 * First, we reserve some transmit/receive resources for the PF. 256 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 257 * account for this, so that we don't accidentally allocate more VFs 258 * than we have available pools. The PCI bus driver already checks for 259 * other values out of range. 260 */ 261 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS) 262 return -EPERM; 263 264 adapter->num_vfs = num_vfs; 265 266 err = __ixgbe_enable_sriov(adapter); 267 if (err) 268 return err; 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 return err; 277 } 278 ixgbe_sriov_reinit(adapter); 279 280 return num_vfs; 281 #else 282 return 0; 283 #endif 284 } 285 286 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 287 { 288 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 289 int err; 290 #ifdef CONFIG_PCI_IOV 291 u32 current_flags = adapter->flags; 292 #endif 293 294 err = ixgbe_disable_sriov(adapter); 295 296 /* Only reinit if no error and state changed */ 297 #ifdef CONFIG_PCI_IOV 298 if (!err && current_flags != adapter->flags) 299 ixgbe_sriov_reinit(adapter); 300 #endif 301 302 return err; 303 } 304 305 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 306 { 307 if (num_vfs == 0) 308 return ixgbe_pci_sriov_disable(dev); 309 else 310 return ixgbe_pci_sriov_enable(dev, num_vfs); 311 } 312 313 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 314 u32 *msgbuf, u32 vf) 315 { 316 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 317 >> IXGBE_VT_MSGINFO_SHIFT; 318 u16 *hash_list = (u16 *)&msgbuf[1]; 319 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 320 struct ixgbe_hw *hw = &adapter->hw; 321 int i; 322 u32 vector_bit; 323 u32 vector_reg; 324 u32 mta_reg; 325 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 326 327 /* only so many hash values supported */ 328 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 329 330 /* 331 * salt away the number of multi cast addresses assigned 332 * to this VF for later use to restore when the PF multi cast 333 * list changes 334 */ 335 vfinfo->num_vf_mc_hashes = entries; 336 337 /* 338 * VFs are limited to using the MTA hash table for their multicast 339 * addresses 340 */ 341 for (i = 0; i < entries; i++) { 342 vfinfo->vf_mc_hashes[i] = hash_list[i]; 343 } 344 345 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 346 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 347 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 348 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 349 mta_reg |= (1 << vector_bit); 350 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 351 } 352 vmolr |= IXGBE_VMOLR_ROMPE; 353 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 354 355 return 0; 356 } 357 358 #ifdef CONFIG_PCI_IOV 359 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 360 { 361 struct ixgbe_hw *hw = &adapter->hw; 362 struct vf_data_storage *vfinfo; 363 int i, j; 364 u32 vector_bit; 365 u32 vector_reg; 366 u32 mta_reg; 367 368 for (i = 0; i < adapter->num_vfs; i++) { 369 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 370 vfinfo = &adapter->vfinfo[i]; 371 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 372 hw->addr_ctrl.mta_in_use++; 373 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 374 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 375 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 376 mta_reg |= (1 << vector_bit); 377 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 378 } 379 380 if (vfinfo->num_vf_mc_hashes) 381 vmolr |= IXGBE_VMOLR_ROMPE; 382 else 383 vmolr &= ~IXGBE_VMOLR_ROMPE; 384 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 385 } 386 387 /* Restore any VF macvlans */ 388 ixgbe_full_sync_mac_table(adapter); 389 } 390 #endif 391 392 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 393 u32 vf) 394 { 395 /* VLAN 0 is a special case, don't allow it to be removed */ 396 if (!vid && !add) 397 return 0; 398 399 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 400 } 401 402 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 403 { 404 struct ixgbe_hw *hw = &adapter->hw; 405 int max_frame = msgbuf[1]; 406 u32 max_frs; 407 408 /* 409 * For 82599EB we have to keep all PFs and VFs operating with 410 * the same max_frame value in order to avoid sending an oversize 411 * frame to a VF. In order to guarantee this is handled correctly 412 * for all cases we have several special exceptions to take into 413 * account before we can enable the VF for receive 414 */ 415 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 416 struct net_device *dev = adapter->netdev; 417 int pf_max_frame = dev->mtu + ETH_HLEN; 418 u32 reg_offset, vf_shift, vfre; 419 s32 err = 0; 420 421 #ifdef CONFIG_FCOE 422 if (dev->features & NETIF_F_FCOE_MTU) 423 pf_max_frame = max_t(int, pf_max_frame, 424 IXGBE_FCOE_JUMBO_FRAME_SIZE); 425 426 #endif /* CONFIG_FCOE */ 427 switch (adapter->vfinfo[vf].vf_api) { 428 case ixgbe_mbox_api_11: 429 /* 430 * Version 1.1 supports jumbo frames on VFs if PF has 431 * jumbo frames enabled which means legacy VFs are 432 * disabled 433 */ 434 if (pf_max_frame > ETH_FRAME_LEN) 435 break; 436 default: 437 /* 438 * If the PF or VF are running w/ jumbo frames enabled 439 * we need to shut down the VF Rx path as we cannot 440 * support jumbo frames on legacy VFs 441 */ 442 if ((pf_max_frame > ETH_FRAME_LEN) || 443 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 444 err = -EINVAL; 445 break; 446 } 447 448 /* determine VF receive enable location */ 449 vf_shift = vf % 32; 450 reg_offset = vf / 32; 451 452 /* enable or disable receive depending on error */ 453 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 454 if (err) 455 vfre &= ~(1 << vf_shift); 456 else 457 vfre |= 1 << vf_shift; 458 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 459 460 if (err) { 461 e_err(drv, "VF max_frame %d out of range\n", max_frame); 462 return err; 463 } 464 } 465 466 /* MTU < 68 is an error and causes problems on some kernels */ 467 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 468 e_err(drv, "VF max_frame %d out of range\n", max_frame); 469 return -EINVAL; 470 } 471 472 /* pull current max frame size from hardware */ 473 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 474 max_frs &= IXGBE_MHADD_MFS_MASK; 475 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 476 477 if (max_frs < max_frame) { 478 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 479 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 480 } 481 482 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 483 484 return 0; 485 } 486 487 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 488 { 489 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 490 vmolr |= IXGBE_VMOLR_BAM; 491 if (aupe) 492 vmolr |= IXGBE_VMOLR_AUPE; 493 else 494 vmolr &= ~IXGBE_VMOLR_AUPE; 495 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 496 } 497 498 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 499 { 500 struct ixgbe_hw *hw = &adapter->hw; 501 502 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 503 } 504 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 505 { 506 struct ixgbe_hw *hw = &adapter->hw; 507 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 508 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 509 510 /* add PF assigned VLAN or VLAN 0 */ 511 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 512 513 /* reset offloads to defaults */ 514 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 515 516 /* set outgoing tags for VFs */ 517 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 518 ixgbe_clear_vmvir(adapter, vf); 519 } else { 520 if (vfinfo->pf_qos || !num_tcs) 521 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 522 vfinfo->pf_qos, vf); 523 else 524 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 525 adapter->default_up, vf); 526 527 if (vfinfo->spoofchk_enabled) 528 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 529 } 530 531 /* reset multicast table array for vf */ 532 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 533 534 /* Flush and reset the mta with the new values */ 535 ixgbe_set_rx_mode(adapter->netdev); 536 537 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 538 539 /* reset VF api back to unknown */ 540 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 541 } 542 543 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 544 int vf, unsigned char *mac_addr) 545 { 546 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 547 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN); 548 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 549 550 return 0; 551 } 552 553 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 554 int vf, int index, unsigned char *mac_addr) 555 { 556 struct list_head *pos; 557 struct vf_macvlans *entry; 558 559 if (index <= 1) { 560 list_for_each(pos, &adapter->vf_mvs.l) { 561 entry = list_entry(pos, struct vf_macvlans, l); 562 if (entry->vf == vf) { 563 entry->vf = -1; 564 entry->free = true; 565 entry->is_macvlan = false; 566 ixgbe_del_mac_filter(adapter, 567 entry->vf_macvlan, vf); 568 } 569 } 570 } 571 572 /* 573 * If index was zero then we were asked to clear the uc list 574 * for the VF. We're done. 575 */ 576 if (!index) 577 return 0; 578 579 entry = NULL; 580 581 list_for_each(pos, &adapter->vf_mvs.l) { 582 entry = list_entry(pos, struct vf_macvlans, l); 583 if (entry->free) 584 break; 585 } 586 587 /* 588 * If we traversed the entire list and didn't find a free entry 589 * then we're out of space on the RAR table. Also entry may 590 * be NULL because the original memory allocation for the list 591 * failed, which is not fatal but does mean we can't support 592 * VF requests for MACVLAN because we couldn't allocate 593 * memory for the list management required. 594 */ 595 if (!entry || !entry->free) 596 return -ENOSPC; 597 598 entry->free = false; 599 entry->is_macvlan = true; 600 entry->vf = vf; 601 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 602 603 ixgbe_add_mac_filter(adapter, mac_addr, vf); 604 605 return 0; 606 } 607 608 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 609 { 610 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 611 unsigned int vfn = (event_mask & 0x3f); 612 613 bool enable = ((event_mask & 0x10000000U) != 0); 614 615 if (enable) 616 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 617 618 return 0; 619 } 620 621 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 622 { 623 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 624 struct ixgbe_hw *hw = &adapter->hw; 625 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 626 u32 reg, reg_offset, vf_shift; 627 u32 msgbuf[4] = {0, 0, 0, 0}; 628 u8 *addr = (u8 *)(&msgbuf[1]); 629 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 630 int i; 631 632 e_info(probe, "VF Reset msg received from vf %d\n", vf); 633 634 /* reset the filters for the device */ 635 ixgbe_vf_reset_event(adapter, vf); 636 637 /* set vf mac address */ 638 if (!is_zero_ether_addr(vf_mac)) 639 ixgbe_set_vf_mac(adapter, vf, vf_mac); 640 641 vf_shift = vf % 32; 642 reg_offset = vf / 32; 643 644 /* enable transmit for vf */ 645 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 646 reg |= 1 << vf_shift; 647 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 648 649 /* force drop enable for all VF Rx queues */ 650 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 651 /* flush previous write */ 652 IXGBE_WRITE_FLUSH(hw); 653 654 /* indicate to hardware that we want to set drop enable */ 655 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE; 656 reg |= i << IXGBE_QDE_IDX_SHIFT; 657 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 658 } 659 660 /* enable receive for vf */ 661 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 662 reg |= 1 << vf_shift; 663 /* 664 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 665 * For more info take a look at ixgbe_set_vf_lpe 666 */ 667 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 668 struct net_device *dev = adapter->netdev; 669 int pf_max_frame = dev->mtu + ETH_HLEN; 670 671 #ifdef CONFIG_FCOE 672 if (dev->features & NETIF_F_FCOE_MTU) 673 pf_max_frame = max_t(int, pf_max_frame, 674 IXGBE_FCOE_JUMBO_FRAME_SIZE); 675 676 #endif /* CONFIG_FCOE */ 677 if (pf_max_frame > ETH_FRAME_LEN) 678 reg &= ~(1 << vf_shift); 679 } 680 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 681 682 /* enable VF mailbox for further messages */ 683 adapter->vfinfo[vf].clear_to_send = true; 684 685 /* Enable counting of spoofed packets in the SSVPC register */ 686 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 687 reg |= (1 << vf_shift); 688 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 689 690 /* 691 * Reset the VFs TDWBAL and TDWBAH registers 692 * which are not cleared by an FLR 693 */ 694 for (i = 0; i < q_per_pool; i++) { 695 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 696 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 697 } 698 699 /* reply to reset with ack and vf mac address */ 700 msgbuf[0] = IXGBE_VF_RESET; 701 if (!is_zero_ether_addr(vf_mac)) { 702 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 703 memcpy(addr, vf_mac, ETH_ALEN); 704 } else { 705 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 706 dev_warn(&adapter->pdev->dev, 707 "VF %d has no MAC address assigned, you may have to assign one manually\n", 708 vf); 709 } 710 711 /* 712 * Piggyback the multicast filter type so VF can compute the 713 * correct vectors 714 */ 715 msgbuf[3] = hw->mac.mc_filter_type; 716 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 717 718 return 0; 719 } 720 721 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 722 u32 *msgbuf, u32 vf) 723 { 724 u8 *new_mac = ((u8 *)(&msgbuf[1])); 725 726 if (!is_valid_ether_addr(new_mac)) { 727 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 728 return -1; 729 } 730 731 if (adapter->vfinfo[vf].pf_set_mac && 732 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 733 e_warn(drv, 734 "VF %d attempted to override administratively set MAC address\n" 735 "Reload the VF driver to resume operations\n", 736 vf); 737 return -1; 738 } 739 740 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 741 } 742 743 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) 744 { 745 u32 vlvf; 746 s32 regindex; 747 748 /* short cut the special case */ 749 if (vlan == 0) 750 return 0; 751 752 /* Search for the vlan id in the VLVF entries */ 753 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) { 754 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex)); 755 if ((vlvf & VLAN_VID_MASK) == vlan) 756 break; 757 } 758 759 /* Return a negative value if not found */ 760 if (regindex >= IXGBE_VLVF_ENTRIES) 761 regindex = -1; 762 763 return regindex; 764 } 765 766 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 767 u32 *msgbuf, u32 vf) 768 { 769 struct ixgbe_hw *hw = &adapter->hw; 770 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 771 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 772 int err; 773 s32 reg_ndx; 774 u32 vlvf; 775 u32 bits; 776 u8 tcs = netdev_get_num_tc(adapter->netdev); 777 778 if (adapter->vfinfo[vf].pf_vlan || tcs) { 779 e_warn(drv, 780 "VF %d attempted to override administratively set VLAN configuration\n" 781 "Reload the VF driver to resume operations\n", 782 vf); 783 return -1; 784 } 785 786 if (add) 787 adapter->vfinfo[vf].vlan_count++; 788 else if (adapter->vfinfo[vf].vlan_count) 789 adapter->vfinfo[vf].vlan_count--; 790 791 /* in case of promiscuous mode any VLAN filter set for a VF must 792 * also have the PF pool added to it. 793 */ 794 if (add && adapter->netdev->flags & IFF_PROMISC) 795 err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0)); 796 797 err = ixgbe_set_vf_vlan(adapter, add, vid, vf); 798 if (!err && adapter->vfinfo[vf].spoofchk_enabled) 799 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 800 801 /* Go through all the checks to see if the VLAN filter should 802 * be wiped completely. 803 */ 804 if (!add && adapter->netdev->flags & IFF_PROMISC) { 805 reg_ndx = ixgbe_find_vlvf_entry(hw, vid); 806 if (reg_ndx < 0) 807 return err; 808 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx)); 809 /* See if any other pools are set for this VLAN filter 810 * entry other than the PF. 811 */ 812 if (VMDQ_P(0) < 32) { 813 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2)); 814 bits &= ~(1 << VMDQ_P(0)); 815 bits |= IXGBE_READ_REG(hw, 816 IXGBE_VLVFB(reg_ndx * 2) + 1); 817 } else { 818 bits = IXGBE_READ_REG(hw, 819 IXGBE_VLVFB(reg_ndx * 2) + 1); 820 bits &= ~(1 << (VMDQ_P(0) - 32)); 821 bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2)); 822 } 823 824 /* If the filter was removed then ensure PF pool bit 825 * is cleared if the PF only added itself to the pool 826 * because the PF is in promiscuous mode. 827 */ 828 if ((vlvf & VLAN_VID_MASK) == vid && 829 !test_bit(vid, adapter->active_vlans) && !bits) 830 ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0)); 831 } 832 833 return err; 834 } 835 836 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 837 u32 *msgbuf, u32 vf) 838 { 839 u8 *new_mac = ((u8 *)(&msgbuf[1])); 840 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 841 IXGBE_VT_MSGINFO_SHIFT; 842 int err; 843 844 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 845 e_warn(drv, 846 "VF %d requested MACVLAN filter but is administratively denied\n", 847 vf); 848 return -1; 849 } 850 851 /* An non-zero index indicates the VF is setting a filter */ 852 if (index) { 853 if (!is_valid_ether_addr(new_mac)) { 854 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 855 return -1; 856 } 857 858 /* 859 * If the VF is allowed to set MAC filters then turn off 860 * anti-spoofing to avoid false positives. 861 */ 862 if (adapter->vfinfo[vf].spoofchk_enabled) 863 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 864 } 865 866 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 867 if (err == -ENOSPC) 868 e_warn(drv, 869 "VF %d has requested a MACVLAN filter but there is no space for it\n", 870 vf); 871 872 return err < 0; 873 } 874 875 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 876 u32 *msgbuf, u32 vf) 877 { 878 int api = msgbuf[1]; 879 880 switch (api) { 881 case ixgbe_mbox_api_10: 882 case ixgbe_mbox_api_11: 883 adapter->vfinfo[vf].vf_api = api; 884 return 0; 885 default: 886 break; 887 } 888 889 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 890 891 return -1; 892 } 893 894 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 895 u32 *msgbuf, u32 vf) 896 { 897 struct net_device *dev = adapter->netdev; 898 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 899 unsigned int default_tc = 0; 900 u8 num_tcs = netdev_get_num_tc(dev); 901 902 /* verify the PF is supporting the correct APIs */ 903 switch (adapter->vfinfo[vf].vf_api) { 904 case ixgbe_mbox_api_20: 905 case ixgbe_mbox_api_11: 906 break; 907 default: 908 return -1; 909 } 910 911 /* only allow 1 Tx queue for bandwidth limiting */ 912 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 913 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 914 915 /* if TCs > 1 determine which TC belongs to default user priority */ 916 if (num_tcs > 1) 917 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 918 919 /* notify VF of need for VLAN tag stripping, and correct queue */ 920 if (num_tcs) 921 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 922 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 923 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 924 else 925 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 926 927 /* notify VF of default queue */ 928 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 929 930 return 0; 931 } 932 933 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 934 { 935 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 936 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 937 struct ixgbe_hw *hw = &adapter->hw; 938 s32 retval; 939 940 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 941 942 if (retval) { 943 pr_err("Error receiving message from VF\n"); 944 return retval; 945 } 946 947 /* this is a message we already processed, do nothing */ 948 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 949 return 0; 950 951 /* flush the ack before we write any messages back */ 952 IXGBE_WRITE_FLUSH(hw); 953 954 if (msgbuf[0] == IXGBE_VF_RESET) 955 return ixgbe_vf_reset_msg(adapter, vf); 956 957 /* 958 * until the vf completes a virtual function reset it should not be 959 * allowed to start any configuration. 960 */ 961 if (!adapter->vfinfo[vf].clear_to_send) { 962 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 963 ixgbe_write_mbx(hw, msgbuf, 1, vf); 964 return 0; 965 } 966 967 switch ((msgbuf[0] & 0xFFFF)) { 968 case IXGBE_VF_SET_MAC_ADDR: 969 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 970 break; 971 case IXGBE_VF_SET_MULTICAST: 972 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 973 break; 974 case IXGBE_VF_SET_VLAN: 975 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 976 break; 977 case IXGBE_VF_SET_LPE: 978 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 979 break; 980 case IXGBE_VF_SET_MACVLAN: 981 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 982 break; 983 case IXGBE_VF_API_NEGOTIATE: 984 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 985 break; 986 case IXGBE_VF_GET_QUEUES: 987 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 988 break; 989 default: 990 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 991 retval = IXGBE_ERR_MBX; 992 break; 993 } 994 995 /* notify the VF of the results of what it sent us */ 996 if (retval) 997 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 998 else 999 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1000 1001 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1002 1003 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1004 1005 return retval; 1006 } 1007 1008 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1009 { 1010 struct ixgbe_hw *hw = &adapter->hw; 1011 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1012 1013 /* if device isn't clear to send it shouldn't be reading either */ 1014 if (!adapter->vfinfo[vf].clear_to_send) 1015 ixgbe_write_mbx(hw, &msg, 1, vf); 1016 } 1017 1018 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1019 { 1020 struct ixgbe_hw *hw = &adapter->hw; 1021 u32 vf; 1022 1023 for (vf = 0; vf < adapter->num_vfs; vf++) { 1024 /* process any reset requests */ 1025 if (!ixgbe_check_for_rst(hw, vf)) 1026 ixgbe_vf_reset_event(adapter, vf); 1027 1028 /* process any messages pending */ 1029 if (!ixgbe_check_for_msg(hw, vf)) 1030 ixgbe_rcv_msg_from_vf(adapter, vf); 1031 1032 /* process any acks */ 1033 if (!ixgbe_check_for_ack(hw, vf)) 1034 ixgbe_rcv_ack_from_vf(adapter, vf); 1035 } 1036 } 1037 1038 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1039 { 1040 struct ixgbe_hw *hw = &adapter->hw; 1041 1042 /* disable transmit and receive for all vfs */ 1043 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1044 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1045 1046 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1047 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1048 } 1049 1050 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1051 { 1052 struct ixgbe_hw *hw = &adapter->hw; 1053 u32 ping; 1054 int i; 1055 1056 for (i = 0 ; i < adapter->num_vfs; i++) { 1057 ping = IXGBE_PF_CONTROL_MSG; 1058 if (adapter->vfinfo[i].clear_to_send) 1059 ping |= IXGBE_VT_MSGTYPE_CTS; 1060 ixgbe_write_mbx(hw, &ping, 1, i); 1061 } 1062 } 1063 1064 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1065 { 1066 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1067 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 1068 return -EINVAL; 1069 adapter->vfinfo[vf].pf_set_mac = true; 1070 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 1071 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 1072 " change effective."); 1073 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1074 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 1075 " but the PF device is not up.\n"); 1076 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 1077 " attempting to use the VF device.\n"); 1078 } 1079 return ixgbe_set_vf_mac(adapter, vf, mac); 1080 } 1081 1082 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 1083 { 1084 int err = 0; 1085 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1086 struct ixgbe_hw *hw = &adapter->hw; 1087 1088 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1089 return -EINVAL; 1090 if (vlan || qos) { 1091 if (adapter->vfinfo[vf].pf_vlan) 1092 err = ixgbe_set_vf_vlan(adapter, false, 1093 adapter->vfinfo[vf].pf_vlan, 1094 vf); 1095 if (err) 1096 goto out; 1097 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1098 if (err) 1099 goto out; 1100 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1101 ixgbe_set_vmolr(hw, vf, false); 1102 if (adapter->vfinfo[vf].spoofchk_enabled) 1103 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 1104 adapter->vfinfo[vf].vlan_count++; 1105 adapter->vfinfo[vf].pf_vlan = vlan; 1106 adapter->vfinfo[vf].pf_qos = qos; 1107 dev_info(&adapter->pdev->dev, 1108 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1109 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1110 dev_warn(&adapter->pdev->dev, 1111 "The VF VLAN has been set," 1112 " but the PF device is not up.\n"); 1113 dev_warn(&adapter->pdev->dev, 1114 "Bring the PF device up before" 1115 " attempting to use the VF device.\n"); 1116 } 1117 } else { 1118 err = ixgbe_set_vf_vlan(adapter, false, 1119 adapter->vfinfo[vf].pf_vlan, vf); 1120 ixgbe_clear_vmvir(adapter, vf); 1121 ixgbe_set_vmolr(hw, vf, true); 1122 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 1123 if (adapter->vfinfo[vf].vlan_count) 1124 adapter->vfinfo[vf].vlan_count--; 1125 adapter->vfinfo[vf].pf_vlan = 0; 1126 adapter->vfinfo[vf].pf_qos = 0; 1127 } 1128 out: 1129 return err; 1130 } 1131 1132 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1133 { 1134 switch (adapter->link_speed) { 1135 case IXGBE_LINK_SPEED_100_FULL: 1136 return 100; 1137 case IXGBE_LINK_SPEED_1GB_FULL: 1138 return 1000; 1139 case IXGBE_LINK_SPEED_10GB_FULL: 1140 return 10000; 1141 default: 1142 return 0; 1143 } 1144 } 1145 1146 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1147 { 1148 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1149 struct ixgbe_hw *hw = &adapter->hw; 1150 u32 bcnrc_val = 0; 1151 u16 queue, queues_per_pool; 1152 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1153 1154 if (tx_rate) { 1155 /* start with base link speed value */ 1156 bcnrc_val = adapter->vf_rate_link_speed; 1157 1158 /* Calculate the rate factor values to set */ 1159 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1160 bcnrc_val /= tx_rate; 1161 1162 /* clear everything but the rate factor */ 1163 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1164 IXGBE_RTTBCNRC_RF_DEC_MASK; 1165 1166 /* enable the rate scheduler */ 1167 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1168 } 1169 1170 /* 1171 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1172 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1173 * and 0x004 otherwise. 1174 */ 1175 switch (hw->mac.type) { 1176 case ixgbe_mac_82599EB: 1177 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1178 break; 1179 case ixgbe_mac_X540: 1180 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1181 break; 1182 default: 1183 break; 1184 } 1185 1186 /* determine how many queues per pool based on VMDq mask */ 1187 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1188 1189 /* write value for all Tx queues belonging to VF */ 1190 for (queue = 0; queue < queues_per_pool; queue++) { 1191 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1192 1193 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1194 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1195 } 1196 } 1197 1198 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1199 { 1200 int i; 1201 1202 /* VF Tx rate limit was not set */ 1203 if (!adapter->vf_rate_link_speed) 1204 return; 1205 1206 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1207 adapter->vf_rate_link_speed = 0; 1208 dev_info(&adapter->pdev->dev, 1209 "Link speed has been changed. VF Transmit rate is disabled\n"); 1210 } 1211 1212 for (i = 0; i < adapter->num_vfs; i++) { 1213 if (!adapter->vf_rate_link_speed) 1214 adapter->vfinfo[i].tx_rate = 0; 1215 1216 ixgbe_set_vf_rate_limit(adapter, i); 1217 } 1218 } 1219 1220 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1221 int max_tx_rate) 1222 { 1223 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1224 int link_speed; 1225 1226 /* verify VF is active */ 1227 if (vf >= adapter->num_vfs) 1228 return -EINVAL; 1229 1230 /* verify link is up */ 1231 if (!adapter->link_up) 1232 return -EINVAL; 1233 1234 /* verify we are linked at 10Gbps */ 1235 link_speed = ixgbe_link_mbps(adapter); 1236 if (link_speed != 10000) 1237 return -EINVAL; 1238 1239 if (min_tx_rate) 1240 return -EINVAL; 1241 1242 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1243 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1244 return -EINVAL; 1245 1246 /* store values */ 1247 adapter->vf_rate_link_speed = link_speed; 1248 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1249 1250 /* update hardware configuration */ 1251 ixgbe_set_vf_rate_limit(adapter, vf); 1252 1253 return 0; 1254 } 1255 1256 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1257 { 1258 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1259 int vf_target_reg = vf >> 3; 1260 int vf_target_shift = vf % 8; 1261 struct ixgbe_hw *hw = &adapter->hw; 1262 u32 regval; 1263 1264 if (vf >= adapter->num_vfs) 1265 return -EINVAL; 1266 1267 adapter->vfinfo[vf].spoofchk_enabled = setting; 1268 1269 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1270 regval &= ~(1 << vf_target_shift); 1271 regval |= (setting << vf_target_shift); 1272 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1273 1274 if (adapter->vfinfo[vf].vlan_count) { 1275 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT; 1276 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1277 regval &= ~(1 << vf_target_shift); 1278 regval |= (setting << vf_target_shift); 1279 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1280 } 1281 1282 return 0; 1283 } 1284 1285 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1286 int vf, struct ifla_vf_info *ivi) 1287 { 1288 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1289 if (vf >= adapter->num_vfs) 1290 return -EINVAL; 1291 ivi->vf = vf; 1292 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1293 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1294 ivi->min_tx_rate = 0; 1295 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1296 ivi->qos = adapter->vfinfo[vf].pf_qos; 1297 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1298 return 0; 1299 } 1300