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 /* Disable RSC when in SR-IOV mode */ 105 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 106 IXGBE_FLAG2_RSC_ENABLED); 107 108 /* enable spoof checking for all VFs */ 109 for (i = 0; i < adapter->num_vfs; i++) 110 adapter->vfinfo[i].spoofchk_enabled = true; 111 return 0; 112 } 113 114 return -ENOMEM; 115 } 116 117 /* Note this function is called when the user wants to enable SR-IOV 118 * VFs using the now deprecated module parameter 119 */ 120 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter) 121 { 122 int pre_existing_vfs = 0; 123 124 pre_existing_vfs = pci_num_vf(adapter->pdev); 125 if (!pre_existing_vfs && !adapter->num_vfs) 126 return; 127 128 /* If there are pre-existing VFs then we have to force 129 * use of that many - over ride any module parameter value. 130 * This may result from the user unloading the PF driver 131 * while VFs were assigned to guest VMs or because the VFs 132 * have been created via the new PCI SR-IOV sysfs interface. 133 */ 134 if (pre_existing_vfs) { 135 adapter->num_vfs = pre_existing_vfs; 136 dev_warn(&adapter->pdev->dev, 137 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); 138 } else { 139 int err; 140 /* 141 * The 82599 supports up to 64 VFs per physical function 142 * but this implementation limits allocation to 63 so that 143 * basic networking resources are still available to the 144 * physical function. If the user requests greater thn 145 * 63 VFs then it is an error - reset to default of zero. 146 */ 147 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT); 148 149 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); 150 if (err) { 151 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 152 adapter->num_vfs = 0; 153 return; 154 } 155 } 156 157 if (!__ixgbe_enable_sriov(adapter)) 158 return; 159 160 /* If we have gotten to this point then there is no memory available 161 * to manage the VF devices - print message and bail. 162 */ 163 e_err(probe, "Unable to allocate memory for VF Data Storage - " 164 "SRIOV disabled\n"); 165 ixgbe_disable_sriov(adapter); 166 } 167 168 #endif /* #ifdef CONFIG_PCI_IOV */ 169 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 170 { 171 struct ixgbe_hw *hw = &adapter->hw; 172 u32 gpie; 173 u32 vmdctl; 174 int rss; 175 176 /* set num VFs to 0 to prevent access to vfinfo */ 177 adapter->num_vfs = 0; 178 179 /* free VF control structures */ 180 kfree(adapter->vfinfo); 181 adapter->vfinfo = NULL; 182 183 /* free macvlan list */ 184 kfree(adapter->mv_list); 185 adapter->mv_list = NULL; 186 187 /* if SR-IOV is already disabled then there is nothing to do */ 188 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 189 return 0; 190 191 #ifdef CONFIG_PCI_IOV 192 /* 193 * If our VFs are assigned we cannot shut down SR-IOV 194 * without causing issues, so just leave the hardware 195 * available but disabled 196 */ 197 if (pci_vfs_assigned(adapter->pdev)) { 198 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 199 return -EPERM; 200 } 201 /* disable iov and allow time for transactions to clear */ 202 pci_disable_sriov(adapter->pdev); 203 #endif 204 205 /* turn off device IOV mode */ 206 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0); 207 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 208 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 209 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 210 211 /* set default pool back to 0 */ 212 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 213 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 214 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 215 IXGBE_WRITE_FLUSH(hw); 216 217 /* Disable VMDq flag so device will be set in VM mode */ 218 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) { 219 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 220 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 221 rss = min_t(int, ixgbe_max_rss_indices(adapter), 222 num_online_cpus()); 223 } else { 224 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 225 } 226 227 adapter->ring_feature[RING_F_VMDQ].offset = 0; 228 adapter->ring_feature[RING_F_RSS].limit = rss; 229 230 /* take a breather then clean up driver data */ 231 msleep(100); 232 return 0; 233 } 234 235 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 236 { 237 #ifdef CONFIG_PCI_IOV 238 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 239 int err = 0; 240 int i; 241 int pre_existing_vfs = pci_num_vf(dev); 242 243 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 244 err = ixgbe_disable_sriov(adapter); 245 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 246 return num_vfs; 247 248 if (err) 249 return err; 250 251 /* While the SR-IOV capability structure reports total VFs to be 64, 252 * we have to limit the actual number allocated based on two factors. 253 * First, we reserve some transmit/receive resources for the PF. 254 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 255 * account for this, so that we don't accidentally allocate more VFs 256 * than we have available pools. The PCI bus driver already checks for 257 * other values out of range. 258 */ 259 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS) 260 return -EPERM; 261 262 adapter->num_vfs = num_vfs; 263 264 err = __ixgbe_enable_sriov(adapter); 265 if (err) 266 return err; 267 268 for (i = 0; i < adapter->num_vfs; i++) 269 ixgbe_vf_configuration(dev, (i | 0x10000000)); 270 271 err = pci_enable_sriov(dev, num_vfs); 272 if (err) { 273 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 274 return err; 275 } 276 ixgbe_sriov_reinit(adapter); 277 278 return num_vfs; 279 #else 280 return 0; 281 #endif 282 } 283 284 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 285 { 286 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 287 int err; 288 #ifdef CONFIG_PCI_IOV 289 u32 current_flags = adapter->flags; 290 #endif 291 292 err = ixgbe_disable_sriov(adapter); 293 294 /* Only reinit if no error and state changed */ 295 #ifdef CONFIG_PCI_IOV 296 if (!err && current_flags != adapter->flags) 297 ixgbe_sriov_reinit(adapter); 298 #endif 299 300 return err; 301 } 302 303 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 304 { 305 if (num_vfs == 0) 306 return ixgbe_pci_sriov_disable(dev); 307 else 308 return ixgbe_pci_sriov_enable(dev, num_vfs); 309 } 310 311 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 312 u32 *msgbuf, u32 vf) 313 { 314 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 315 >> IXGBE_VT_MSGINFO_SHIFT; 316 u16 *hash_list = (u16 *)&msgbuf[1]; 317 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 318 struct ixgbe_hw *hw = &adapter->hw; 319 int i; 320 u32 vector_bit; 321 u32 vector_reg; 322 u32 mta_reg; 323 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 324 325 /* only so many hash values supported */ 326 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 327 328 /* 329 * salt away the number of multi cast addresses assigned 330 * to this VF for later use to restore when the PF multi cast 331 * list changes 332 */ 333 vfinfo->num_vf_mc_hashes = entries; 334 335 /* 336 * VFs are limited to using the MTA hash table for their multicast 337 * addresses 338 */ 339 for (i = 0; i < entries; i++) { 340 vfinfo->vf_mc_hashes[i] = hash_list[i]; 341 } 342 343 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 344 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 345 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 346 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 347 mta_reg |= (1 << vector_bit); 348 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 349 } 350 vmolr |= IXGBE_VMOLR_ROMPE; 351 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 352 353 return 0; 354 } 355 356 #ifdef CONFIG_PCI_IOV 357 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 358 { 359 struct ixgbe_hw *hw = &adapter->hw; 360 struct vf_data_storage *vfinfo; 361 int i, j; 362 u32 vector_bit; 363 u32 vector_reg; 364 u32 mta_reg; 365 366 for (i = 0; i < adapter->num_vfs; i++) { 367 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 368 vfinfo = &adapter->vfinfo[i]; 369 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 370 hw->addr_ctrl.mta_in_use++; 371 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 372 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 373 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 374 mta_reg |= (1 << vector_bit); 375 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 376 } 377 378 if (vfinfo->num_vf_mc_hashes) 379 vmolr |= IXGBE_VMOLR_ROMPE; 380 else 381 vmolr &= ~IXGBE_VMOLR_ROMPE; 382 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 383 } 384 385 /* Restore any VF macvlans */ 386 ixgbe_full_sync_mac_table(adapter); 387 } 388 #endif 389 390 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 391 u32 vf) 392 { 393 /* VLAN 0 is a special case, don't allow it to be removed */ 394 if (!vid && !add) 395 return 0; 396 397 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 398 } 399 400 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 401 { 402 struct ixgbe_hw *hw = &adapter->hw; 403 int max_frame = msgbuf[1]; 404 u32 max_frs; 405 406 /* 407 * For 82599EB we have to keep all PFs and VFs operating with 408 * the same max_frame value in order to avoid sending an oversize 409 * frame to a VF. In order to guarantee this is handled correctly 410 * for all cases we have several special exceptions to take into 411 * account before we can enable the VF for receive 412 */ 413 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 414 struct net_device *dev = adapter->netdev; 415 int pf_max_frame = dev->mtu + ETH_HLEN; 416 u32 reg_offset, vf_shift, vfre; 417 s32 err = 0; 418 419 #ifdef CONFIG_FCOE 420 if (dev->features & NETIF_F_FCOE_MTU) 421 pf_max_frame = max_t(int, pf_max_frame, 422 IXGBE_FCOE_JUMBO_FRAME_SIZE); 423 424 #endif /* CONFIG_FCOE */ 425 switch (adapter->vfinfo[vf].vf_api) { 426 case ixgbe_mbox_api_11: 427 /* 428 * Version 1.1 supports jumbo frames on VFs if PF has 429 * jumbo frames enabled which means legacy VFs are 430 * disabled 431 */ 432 if (pf_max_frame > ETH_FRAME_LEN) 433 break; 434 default: 435 /* 436 * If the PF or VF are running w/ jumbo frames enabled 437 * we need to shut down the VF Rx path as we cannot 438 * support jumbo frames on legacy VFs 439 */ 440 if ((pf_max_frame > ETH_FRAME_LEN) || 441 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 442 err = -EINVAL; 443 break; 444 } 445 446 /* determine VF receive enable location */ 447 vf_shift = vf % 32; 448 reg_offset = vf / 32; 449 450 /* enable or disable receive depending on error */ 451 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 452 if (err) 453 vfre &= ~(1 << vf_shift); 454 else 455 vfre |= 1 << vf_shift; 456 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 457 458 if (err) { 459 e_err(drv, "VF max_frame %d out of range\n", max_frame); 460 return err; 461 } 462 } 463 464 /* MTU < 68 is an error and causes problems on some kernels */ 465 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 466 e_err(drv, "VF max_frame %d out of range\n", max_frame); 467 return -EINVAL; 468 } 469 470 /* pull current max frame size from hardware */ 471 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 472 max_frs &= IXGBE_MHADD_MFS_MASK; 473 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 474 475 if (max_frs < max_frame) { 476 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 477 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 478 } 479 480 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 481 482 return 0; 483 } 484 485 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 486 { 487 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 488 vmolr |= IXGBE_VMOLR_BAM; 489 if (aupe) 490 vmolr |= IXGBE_VMOLR_AUPE; 491 else 492 vmolr &= ~IXGBE_VMOLR_AUPE; 493 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 494 } 495 496 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 497 { 498 struct ixgbe_hw *hw = &adapter->hw; 499 500 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 501 } 502 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 503 { 504 struct ixgbe_hw *hw = &adapter->hw; 505 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 506 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 507 508 /* add PF assigned VLAN or VLAN 0 */ 509 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 510 511 /* reset offloads to defaults */ 512 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 513 514 /* set outgoing tags for VFs */ 515 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 516 ixgbe_clear_vmvir(adapter, vf); 517 } else { 518 if (vfinfo->pf_qos || !num_tcs) 519 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 520 vfinfo->pf_qos, vf); 521 else 522 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 523 adapter->default_up, vf); 524 525 if (vfinfo->spoofchk_enabled) 526 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 527 } 528 529 /* reset multicast table array for vf */ 530 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 531 532 /* Flush and reset the mta with the new values */ 533 ixgbe_set_rx_mode(adapter->netdev); 534 535 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 536 537 /* reset VF api back to unknown */ 538 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 539 } 540 541 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 542 int vf, unsigned char *mac_addr) 543 { 544 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 545 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN); 546 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 547 548 return 0; 549 } 550 551 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 552 int vf, int index, unsigned char *mac_addr) 553 { 554 struct list_head *pos; 555 struct vf_macvlans *entry; 556 557 if (index <= 1) { 558 list_for_each(pos, &adapter->vf_mvs.l) { 559 entry = list_entry(pos, struct vf_macvlans, l); 560 if (entry->vf == vf) { 561 entry->vf = -1; 562 entry->free = true; 563 entry->is_macvlan = false; 564 ixgbe_del_mac_filter(adapter, 565 entry->vf_macvlan, vf); 566 } 567 } 568 } 569 570 /* 571 * If index was zero then we were asked to clear the uc list 572 * for the VF. We're done. 573 */ 574 if (!index) 575 return 0; 576 577 entry = NULL; 578 579 list_for_each(pos, &adapter->vf_mvs.l) { 580 entry = list_entry(pos, struct vf_macvlans, l); 581 if (entry->free) 582 break; 583 } 584 585 /* 586 * If we traversed the entire list and didn't find a free entry 587 * then we're out of space on the RAR table. Also entry may 588 * be NULL because the original memory allocation for the list 589 * failed, which is not fatal but does mean we can't support 590 * VF requests for MACVLAN because we couldn't allocate 591 * memory for the list management required. 592 */ 593 if (!entry || !entry->free) 594 return -ENOSPC; 595 596 entry->free = false; 597 entry->is_macvlan = true; 598 entry->vf = vf; 599 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 600 601 ixgbe_add_mac_filter(adapter, mac_addr, vf); 602 603 return 0; 604 } 605 606 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 607 { 608 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 609 unsigned int vfn = (event_mask & 0x3f); 610 611 bool enable = ((event_mask & 0x10000000U) != 0); 612 613 if (enable) 614 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 615 616 return 0; 617 } 618 619 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 620 u32 qde) 621 { 622 struct ixgbe_hw *hw = &adapter->hw; 623 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 624 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 625 int i; 626 627 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 628 u32 reg; 629 630 /* flush previous write */ 631 IXGBE_WRITE_FLUSH(hw); 632 633 /* indicate to hardware that we want to set drop enable */ 634 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE; 635 reg |= i << IXGBE_QDE_IDX_SHIFT; 636 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 637 } 638 } 639 640 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 641 { 642 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 643 struct ixgbe_hw *hw = &adapter->hw; 644 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 645 u32 reg, reg_offset, vf_shift; 646 u32 msgbuf[4] = {0, 0, 0, 0}; 647 u8 *addr = (u8 *)(&msgbuf[1]); 648 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 649 int i; 650 651 e_info(probe, "VF Reset msg received from vf %d\n", vf); 652 653 /* reset the filters for the device */ 654 ixgbe_vf_reset_event(adapter, vf); 655 656 /* set vf mac address */ 657 if (!is_zero_ether_addr(vf_mac)) 658 ixgbe_set_vf_mac(adapter, vf, vf_mac); 659 660 vf_shift = vf % 32; 661 reg_offset = vf / 32; 662 663 /* enable transmit for vf */ 664 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 665 reg |= 1 << vf_shift; 666 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 667 668 /* force drop enable for all VF Rx queues */ 669 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 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 return err; 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 return err; 845 } 846 847 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 848 u32 *msgbuf, u32 vf) 849 { 850 u8 *new_mac = ((u8 *)(&msgbuf[1])); 851 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 852 IXGBE_VT_MSGINFO_SHIFT; 853 int err; 854 855 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 856 e_warn(drv, 857 "VF %d requested MACVLAN filter but is administratively denied\n", 858 vf); 859 return -1; 860 } 861 862 /* An non-zero index indicates the VF is setting a filter */ 863 if (index) { 864 if (!is_valid_ether_addr(new_mac)) { 865 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 866 return -1; 867 } 868 869 /* 870 * If the VF is allowed to set MAC filters then turn off 871 * anti-spoofing to avoid false positives. 872 */ 873 if (adapter->vfinfo[vf].spoofchk_enabled) 874 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 875 } 876 877 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 878 if (err == -ENOSPC) 879 e_warn(drv, 880 "VF %d has requested a MACVLAN filter but there is no space for it\n", 881 vf); 882 883 return err < 0; 884 } 885 886 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 887 u32 *msgbuf, u32 vf) 888 { 889 int api = msgbuf[1]; 890 891 switch (api) { 892 case ixgbe_mbox_api_10: 893 case ixgbe_mbox_api_11: 894 adapter->vfinfo[vf].vf_api = api; 895 return 0; 896 default: 897 break; 898 } 899 900 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 901 902 return -1; 903 } 904 905 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 906 u32 *msgbuf, u32 vf) 907 { 908 struct net_device *dev = adapter->netdev; 909 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 910 unsigned int default_tc = 0; 911 u8 num_tcs = netdev_get_num_tc(dev); 912 913 /* verify the PF is supporting the correct APIs */ 914 switch (adapter->vfinfo[vf].vf_api) { 915 case ixgbe_mbox_api_20: 916 case ixgbe_mbox_api_11: 917 break; 918 default: 919 return -1; 920 } 921 922 /* only allow 1 Tx queue for bandwidth limiting */ 923 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 924 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 925 926 /* if TCs > 1 determine which TC belongs to default user priority */ 927 if (num_tcs > 1) 928 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 929 930 /* notify VF of need for VLAN tag stripping, and correct queue */ 931 if (num_tcs) 932 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 933 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 934 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 935 else 936 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 937 938 /* notify VF of default queue */ 939 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 940 941 return 0; 942 } 943 944 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 945 { 946 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 947 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 948 struct ixgbe_hw *hw = &adapter->hw; 949 s32 retval; 950 951 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 952 953 if (retval) { 954 pr_err("Error receiving message from VF\n"); 955 return retval; 956 } 957 958 /* this is a message we already processed, do nothing */ 959 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 960 return 0; 961 962 /* flush the ack before we write any messages back */ 963 IXGBE_WRITE_FLUSH(hw); 964 965 if (msgbuf[0] == IXGBE_VF_RESET) 966 return ixgbe_vf_reset_msg(adapter, vf); 967 968 /* 969 * until the vf completes a virtual function reset it should not be 970 * allowed to start any configuration. 971 */ 972 if (!adapter->vfinfo[vf].clear_to_send) { 973 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 974 ixgbe_write_mbx(hw, msgbuf, 1, vf); 975 return 0; 976 } 977 978 switch ((msgbuf[0] & 0xFFFF)) { 979 case IXGBE_VF_SET_MAC_ADDR: 980 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 981 break; 982 case IXGBE_VF_SET_MULTICAST: 983 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 984 break; 985 case IXGBE_VF_SET_VLAN: 986 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 987 break; 988 case IXGBE_VF_SET_LPE: 989 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 990 break; 991 case IXGBE_VF_SET_MACVLAN: 992 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 993 break; 994 case IXGBE_VF_API_NEGOTIATE: 995 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 996 break; 997 case IXGBE_VF_GET_QUEUES: 998 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 999 break; 1000 default: 1001 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1002 retval = IXGBE_ERR_MBX; 1003 break; 1004 } 1005 1006 /* notify the VF of the results of what it sent us */ 1007 if (retval) 1008 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1009 else 1010 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1011 1012 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1013 1014 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1015 1016 return retval; 1017 } 1018 1019 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1020 { 1021 struct ixgbe_hw *hw = &adapter->hw; 1022 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1023 1024 /* if device isn't clear to send it shouldn't be reading either */ 1025 if (!adapter->vfinfo[vf].clear_to_send) 1026 ixgbe_write_mbx(hw, &msg, 1, vf); 1027 } 1028 1029 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1030 { 1031 struct ixgbe_hw *hw = &adapter->hw; 1032 u32 vf; 1033 1034 for (vf = 0; vf < adapter->num_vfs; vf++) { 1035 /* process any reset requests */ 1036 if (!ixgbe_check_for_rst(hw, vf)) 1037 ixgbe_vf_reset_event(adapter, vf); 1038 1039 /* process any messages pending */ 1040 if (!ixgbe_check_for_msg(hw, vf)) 1041 ixgbe_rcv_msg_from_vf(adapter, vf); 1042 1043 /* process any acks */ 1044 if (!ixgbe_check_for_ack(hw, vf)) 1045 ixgbe_rcv_ack_from_vf(adapter, vf); 1046 } 1047 } 1048 1049 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1050 { 1051 struct ixgbe_hw *hw = &adapter->hw; 1052 1053 /* disable transmit and receive for all vfs */ 1054 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1055 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1056 1057 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1058 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1059 } 1060 1061 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1062 { 1063 struct ixgbe_hw *hw = &adapter->hw; 1064 u32 ping; 1065 int i; 1066 1067 for (i = 0 ; i < adapter->num_vfs; i++) { 1068 ping = IXGBE_PF_CONTROL_MSG; 1069 if (adapter->vfinfo[i].clear_to_send) 1070 ping |= IXGBE_VT_MSGTYPE_CTS; 1071 ixgbe_write_mbx(hw, &ping, 1, i); 1072 } 1073 } 1074 1075 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1076 { 1077 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1078 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 1079 return -EINVAL; 1080 adapter->vfinfo[vf].pf_set_mac = true; 1081 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 1082 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 1083 " change effective."); 1084 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1085 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 1086 " but the PF device is not up.\n"); 1087 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 1088 " attempting to use the VF device.\n"); 1089 } 1090 return ixgbe_set_vf_mac(adapter, vf, mac); 1091 } 1092 1093 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1094 u16 vlan, u8 qos) 1095 { 1096 struct ixgbe_hw *hw = &adapter->hw; 1097 int err; 1098 1099 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1100 if (err) 1101 goto out; 1102 1103 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1104 ixgbe_set_vmolr(hw, vf, false); 1105 if (adapter->vfinfo[vf].spoofchk_enabled) 1106 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 1107 adapter->vfinfo[vf].vlan_count++; 1108 1109 /* enable hide vlan on X550 */ 1110 if (hw->mac.type >= ixgbe_mac_X550) 1111 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1112 IXGBE_QDE_HIDE_VLAN); 1113 1114 adapter->vfinfo[vf].pf_vlan = vlan; 1115 adapter->vfinfo[vf].pf_qos = qos; 1116 dev_info(&adapter->pdev->dev, 1117 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1118 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1119 dev_warn(&adapter->pdev->dev, 1120 "The VF VLAN has been set, but the PF device is not up.\n"); 1121 dev_warn(&adapter->pdev->dev, 1122 "Bring the PF device up before attempting to use the VF device.\n"); 1123 } 1124 1125 out: 1126 return err; 1127 } 1128 1129 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1130 { 1131 struct ixgbe_hw *hw = &adapter->hw; 1132 int err; 1133 1134 err = ixgbe_set_vf_vlan(adapter, false, 1135 adapter->vfinfo[vf].pf_vlan, vf); 1136 ixgbe_clear_vmvir(adapter, vf); 1137 ixgbe_set_vmolr(hw, vf, true); 1138 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 1139 if (adapter->vfinfo[vf].vlan_count) 1140 adapter->vfinfo[vf].vlan_count--; 1141 1142 /* disable hide VLAN on X550 */ 1143 if (hw->mac.type >= ixgbe_mac_X550) 1144 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1145 1146 adapter->vfinfo[vf].pf_vlan = 0; 1147 adapter->vfinfo[vf].pf_qos = 0; 1148 1149 return err; 1150 } 1151 1152 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 1153 { 1154 int err = 0; 1155 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1156 1157 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1158 return -EINVAL; 1159 if (vlan || qos) { 1160 /* Check if there is already a port VLAN set, if so 1161 * we have to delete the old one first before we 1162 * can set the new one. The usage model had 1163 * previously assumed the user would delete the 1164 * old port VLAN before setting a new one but this 1165 * is not necessarily the case. 1166 */ 1167 if (adapter->vfinfo[vf].pf_vlan) 1168 err = ixgbe_disable_port_vlan(adapter, vf); 1169 if (err) 1170 goto out; 1171 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1172 } else { 1173 err = ixgbe_disable_port_vlan(adapter, vf); 1174 } 1175 1176 out: 1177 return err; 1178 } 1179 1180 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1181 { 1182 switch (adapter->link_speed) { 1183 case IXGBE_LINK_SPEED_100_FULL: 1184 return 100; 1185 case IXGBE_LINK_SPEED_1GB_FULL: 1186 return 1000; 1187 case IXGBE_LINK_SPEED_10GB_FULL: 1188 return 10000; 1189 default: 1190 return 0; 1191 } 1192 } 1193 1194 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1195 { 1196 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1197 struct ixgbe_hw *hw = &adapter->hw; 1198 u32 bcnrc_val = 0; 1199 u16 queue, queues_per_pool; 1200 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1201 1202 if (tx_rate) { 1203 /* start with base link speed value */ 1204 bcnrc_val = adapter->vf_rate_link_speed; 1205 1206 /* Calculate the rate factor values to set */ 1207 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1208 bcnrc_val /= tx_rate; 1209 1210 /* clear everything but the rate factor */ 1211 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1212 IXGBE_RTTBCNRC_RF_DEC_MASK; 1213 1214 /* enable the rate scheduler */ 1215 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1216 } 1217 1218 /* 1219 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1220 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1221 * and 0x004 otherwise. 1222 */ 1223 switch (hw->mac.type) { 1224 case ixgbe_mac_82599EB: 1225 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1226 break; 1227 case ixgbe_mac_X540: 1228 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1229 break; 1230 default: 1231 break; 1232 } 1233 1234 /* determine how many queues per pool based on VMDq mask */ 1235 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1236 1237 /* write value for all Tx queues belonging to VF */ 1238 for (queue = 0; queue < queues_per_pool; queue++) { 1239 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1240 1241 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1242 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1243 } 1244 } 1245 1246 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1247 { 1248 int i; 1249 1250 /* VF Tx rate limit was not set */ 1251 if (!adapter->vf_rate_link_speed) 1252 return; 1253 1254 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1255 adapter->vf_rate_link_speed = 0; 1256 dev_info(&adapter->pdev->dev, 1257 "Link speed has been changed. VF Transmit rate is disabled\n"); 1258 } 1259 1260 for (i = 0; i < adapter->num_vfs; i++) { 1261 if (!adapter->vf_rate_link_speed) 1262 adapter->vfinfo[i].tx_rate = 0; 1263 1264 ixgbe_set_vf_rate_limit(adapter, i); 1265 } 1266 } 1267 1268 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1269 int max_tx_rate) 1270 { 1271 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1272 int link_speed; 1273 1274 /* verify VF is active */ 1275 if (vf >= adapter->num_vfs) 1276 return -EINVAL; 1277 1278 /* verify link is up */ 1279 if (!adapter->link_up) 1280 return -EINVAL; 1281 1282 /* verify we are linked at 10Gbps */ 1283 link_speed = ixgbe_link_mbps(adapter); 1284 if (link_speed != 10000) 1285 return -EINVAL; 1286 1287 if (min_tx_rate) 1288 return -EINVAL; 1289 1290 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1291 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1292 return -EINVAL; 1293 1294 /* store values */ 1295 adapter->vf_rate_link_speed = link_speed; 1296 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1297 1298 /* update hardware configuration */ 1299 ixgbe_set_vf_rate_limit(adapter, vf); 1300 1301 return 0; 1302 } 1303 1304 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1305 { 1306 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1307 int vf_target_reg = vf >> 3; 1308 int vf_target_shift = vf % 8; 1309 struct ixgbe_hw *hw = &adapter->hw; 1310 u32 regval; 1311 1312 if (vf >= adapter->num_vfs) 1313 return -EINVAL; 1314 1315 adapter->vfinfo[vf].spoofchk_enabled = setting; 1316 1317 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1318 regval &= ~(1 << vf_target_shift); 1319 regval |= (setting << vf_target_shift); 1320 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1321 1322 if (adapter->vfinfo[vf].vlan_count) { 1323 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT; 1324 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1325 regval &= ~(1 << vf_target_shift); 1326 regval |= (setting << vf_target_shift); 1327 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1328 } 1329 1330 return 0; 1331 } 1332 1333 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1334 int vf, struct ifla_vf_info *ivi) 1335 { 1336 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1337 if (vf >= adapter->num_vfs) 1338 return -EINVAL; 1339 ivi->vf = vf; 1340 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1341 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1342 ivi->min_tx_rate = 0; 1343 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1344 ivi->qos = adapter->vfinfo[vf].pf_qos; 1345 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1346 return 0; 1347 } 1348