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(adapter), 225 num_online_cpus()); 226 } else { 227 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 228 } 229 230 adapter->ring_feature[RING_F_VMDQ].offset = 0; 231 adapter->ring_feature[RING_F_RSS].limit = rss; 232 233 /* take a breather then clean up driver data */ 234 msleep(100); 235 return 0; 236 } 237 238 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 239 { 240 #ifdef CONFIG_PCI_IOV 241 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 242 int err = 0; 243 int i; 244 int pre_existing_vfs = pci_num_vf(dev); 245 246 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 247 err = ixgbe_disable_sriov(adapter); 248 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 249 return num_vfs; 250 251 if (err) 252 return err; 253 254 /* While the SR-IOV capability structure reports total VFs to be 64, 255 * we have to limit the actual number allocated based on two factors. 256 * First, we reserve some transmit/receive resources for the PF. 257 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 258 * account for this, so that we don't accidentally allocate more VFs 259 * than we have available pools. The PCI bus driver already checks for 260 * other values out of range. 261 */ 262 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS) 263 return -EPERM; 264 265 adapter->num_vfs = num_vfs; 266 267 err = __ixgbe_enable_sriov(adapter); 268 if (err) 269 return err; 270 271 for (i = 0; i < adapter->num_vfs; i++) 272 ixgbe_vf_configuration(dev, (i | 0x10000000)); 273 274 err = pci_enable_sriov(dev, num_vfs); 275 if (err) { 276 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 277 return err; 278 } 279 ixgbe_sriov_reinit(adapter); 280 281 return num_vfs; 282 #else 283 return 0; 284 #endif 285 } 286 287 static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 288 { 289 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 290 int err; 291 #ifdef CONFIG_PCI_IOV 292 u32 current_flags = adapter->flags; 293 #endif 294 295 err = ixgbe_disable_sriov(adapter); 296 297 /* Only reinit if no error and state changed */ 298 #ifdef CONFIG_PCI_IOV 299 if (!err && current_flags != adapter->flags) 300 ixgbe_sriov_reinit(adapter); 301 #endif 302 303 return err; 304 } 305 306 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 307 { 308 if (num_vfs == 0) 309 return ixgbe_pci_sriov_disable(dev); 310 else 311 return ixgbe_pci_sriov_enable(dev, num_vfs); 312 } 313 314 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 315 u32 *msgbuf, u32 vf) 316 { 317 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 318 >> IXGBE_VT_MSGINFO_SHIFT; 319 u16 *hash_list = (u16 *)&msgbuf[1]; 320 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 321 struct ixgbe_hw *hw = &adapter->hw; 322 int i; 323 u32 vector_bit; 324 u32 vector_reg; 325 u32 mta_reg; 326 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 327 328 /* only so many hash values supported */ 329 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 330 331 /* 332 * salt away the number of multi cast addresses assigned 333 * to this VF for later use to restore when the PF multi cast 334 * list changes 335 */ 336 vfinfo->num_vf_mc_hashes = entries; 337 338 /* 339 * VFs are limited to using the MTA hash table for their multicast 340 * addresses 341 */ 342 for (i = 0; i < entries; i++) { 343 vfinfo->vf_mc_hashes[i] = hash_list[i]; 344 } 345 346 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 347 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 348 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 349 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 350 mta_reg |= (1 << vector_bit); 351 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 352 } 353 vmolr |= IXGBE_VMOLR_ROMPE; 354 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 355 356 return 0; 357 } 358 359 #ifdef CONFIG_PCI_IOV 360 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 361 { 362 struct ixgbe_hw *hw = &adapter->hw; 363 struct vf_data_storage *vfinfo; 364 int i, j; 365 u32 vector_bit; 366 u32 vector_reg; 367 u32 mta_reg; 368 369 for (i = 0; i < adapter->num_vfs; i++) { 370 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 371 vfinfo = &adapter->vfinfo[i]; 372 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 373 hw->addr_ctrl.mta_in_use++; 374 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 375 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 376 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 377 mta_reg |= (1 << vector_bit); 378 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 379 } 380 381 if (vfinfo->num_vf_mc_hashes) 382 vmolr |= IXGBE_VMOLR_ROMPE; 383 else 384 vmolr &= ~IXGBE_VMOLR_ROMPE; 385 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 386 } 387 388 /* Restore any VF macvlans */ 389 ixgbe_full_sync_mac_table(adapter); 390 } 391 #endif 392 393 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 394 u32 vf) 395 { 396 /* VLAN 0 is a special case, don't allow it to be removed */ 397 if (!vid && !add) 398 return 0; 399 400 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 401 } 402 403 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 404 { 405 struct ixgbe_hw *hw = &adapter->hw; 406 int max_frame = msgbuf[1]; 407 u32 max_frs; 408 409 /* 410 * For 82599EB we have to keep all PFs and VFs operating with 411 * the same max_frame value in order to avoid sending an oversize 412 * frame to a VF. In order to guarantee this is handled correctly 413 * for all cases we have several special exceptions to take into 414 * account before we can enable the VF for receive 415 */ 416 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 417 struct net_device *dev = adapter->netdev; 418 int pf_max_frame = dev->mtu + ETH_HLEN; 419 u32 reg_offset, vf_shift, vfre; 420 s32 err = 0; 421 422 #ifdef CONFIG_FCOE 423 if (dev->features & NETIF_F_FCOE_MTU) 424 pf_max_frame = max_t(int, pf_max_frame, 425 IXGBE_FCOE_JUMBO_FRAME_SIZE); 426 427 #endif /* CONFIG_FCOE */ 428 switch (adapter->vfinfo[vf].vf_api) { 429 case ixgbe_mbox_api_11: 430 /* 431 * Version 1.1 supports jumbo frames on VFs if PF has 432 * jumbo frames enabled which means legacy VFs are 433 * disabled 434 */ 435 if (pf_max_frame > ETH_FRAME_LEN) 436 break; 437 default: 438 /* 439 * If the PF or VF are running w/ jumbo frames enabled 440 * we need to shut down the VF Rx path as we cannot 441 * support jumbo frames on legacy VFs 442 */ 443 if ((pf_max_frame > ETH_FRAME_LEN) || 444 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 445 err = -EINVAL; 446 break; 447 } 448 449 /* determine VF receive enable location */ 450 vf_shift = vf % 32; 451 reg_offset = vf / 32; 452 453 /* enable or disable receive depending on error */ 454 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 455 if (err) 456 vfre &= ~(1 << vf_shift); 457 else 458 vfre |= 1 << vf_shift; 459 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 460 461 if (err) { 462 e_err(drv, "VF max_frame %d out of range\n", max_frame); 463 return err; 464 } 465 } 466 467 /* MTU < 68 is an error and causes problems on some kernels */ 468 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 469 e_err(drv, "VF max_frame %d out of range\n", max_frame); 470 return -EINVAL; 471 } 472 473 /* pull current max frame size from hardware */ 474 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 475 max_frs &= IXGBE_MHADD_MFS_MASK; 476 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 477 478 if (max_frs < max_frame) { 479 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 480 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 481 } 482 483 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 484 485 return 0; 486 } 487 488 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 489 { 490 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 491 vmolr |= IXGBE_VMOLR_BAM; 492 if (aupe) 493 vmolr |= IXGBE_VMOLR_AUPE; 494 else 495 vmolr &= ~IXGBE_VMOLR_AUPE; 496 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 497 } 498 499 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 500 { 501 struct ixgbe_hw *hw = &adapter->hw; 502 503 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 504 } 505 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 506 { 507 struct ixgbe_hw *hw = &adapter->hw; 508 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 509 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 510 511 /* add PF assigned VLAN or VLAN 0 */ 512 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 513 514 /* reset offloads to defaults */ 515 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 516 517 /* set outgoing tags for VFs */ 518 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 519 ixgbe_clear_vmvir(adapter, vf); 520 } else { 521 if (vfinfo->pf_qos || !num_tcs) 522 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 523 vfinfo->pf_qos, vf); 524 else 525 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 526 adapter->default_up, vf); 527 528 if (vfinfo->spoofchk_enabled) 529 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 530 } 531 532 /* reset multicast table array for vf */ 533 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 534 535 /* Flush and reset the mta with the new values */ 536 ixgbe_set_rx_mode(adapter->netdev); 537 538 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 539 540 /* reset VF api back to unknown */ 541 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 542 } 543 544 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 545 int vf, unsigned char *mac_addr) 546 { 547 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 548 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN); 549 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 550 551 return 0; 552 } 553 554 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 555 int vf, int index, unsigned char *mac_addr) 556 { 557 struct list_head *pos; 558 struct vf_macvlans *entry; 559 560 if (index <= 1) { 561 list_for_each(pos, &adapter->vf_mvs.l) { 562 entry = list_entry(pos, struct vf_macvlans, l); 563 if (entry->vf == vf) { 564 entry->vf = -1; 565 entry->free = true; 566 entry->is_macvlan = false; 567 ixgbe_del_mac_filter(adapter, 568 entry->vf_macvlan, vf); 569 } 570 } 571 } 572 573 /* 574 * If index was zero then we were asked to clear the uc list 575 * for the VF. We're done. 576 */ 577 if (!index) 578 return 0; 579 580 entry = NULL; 581 582 list_for_each(pos, &adapter->vf_mvs.l) { 583 entry = list_entry(pos, struct vf_macvlans, l); 584 if (entry->free) 585 break; 586 } 587 588 /* 589 * If we traversed the entire list and didn't find a free entry 590 * then we're out of space on the RAR table. Also entry may 591 * be NULL because the original memory allocation for the list 592 * failed, which is not fatal but does mean we can't support 593 * VF requests for MACVLAN because we couldn't allocate 594 * memory for the list management required. 595 */ 596 if (!entry || !entry->free) 597 return -ENOSPC; 598 599 entry->free = false; 600 entry->is_macvlan = true; 601 entry->vf = vf; 602 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 603 604 ixgbe_add_mac_filter(adapter, mac_addr, vf); 605 606 return 0; 607 } 608 609 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 610 { 611 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 612 unsigned int vfn = (event_mask & 0x3f); 613 614 bool enable = ((event_mask & 0x10000000U) != 0); 615 616 if (enable) 617 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 618 619 return 0; 620 } 621 622 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 623 u32 qde) 624 { 625 struct ixgbe_hw *hw = &adapter->hw; 626 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 627 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 628 int i; 629 630 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 631 u32 reg; 632 633 /* flush previous write */ 634 IXGBE_WRITE_FLUSH(hw); 635 636 /* indicate to hardware that we want to set drop enable */ 637 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE; 638 reg |= i << IXGBE_QDE_IDX_SHIFT; 639 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 640 } 641 } 642 643 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 644 { 645 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 646 struct ixgbe_hw *hw = &adapter->hw; 647 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 648 u32 reg, reg_offset, vf_shift; 649 u32 msgbuf[4] = {0, 0, 0, 0}; 650 u8 *addr = (u8 *)(&msgbuf[1]); 651 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 652 int i; 653 654 e_info(probe, "VF Reset msg received from vf %d\n", vf); 655 656 /* reset the filters for the device */ 657 ixgbe_vf_reset_event(adapter, vf); 658 659 /* set vf mac address */ 660 if (!is_zero_ether_addr(vf_mac)) 661 ixgbe_set_vf_mac(adapter, vf, vf_mac); 662 663 vf_shift = vf % 32; 664 reg_offset = vf / 32; 665 666 /* enable transmit for vf */ 667 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 668 reg |= 1 << vf_shift; 669 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 670 671 /* force drop enable for all VF Rx queues */ 672 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 673 674 /* enable receive for vf */ 675 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 676 reg |= 1 << vf_shift; 677 /* 678 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 679 * For more info take a look at ixgbe_set_vf_lpe 680 */ 681 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 682 struct net_device *dev = adapter->netdev; 683 int pf_max_frame = dev->mtu + ETH_HLEN; 684 685 #ifdef CONFIG_FCOE 686 if (dev->features & NETIF_F_FCOE_MTU) 687 pf_max_frame = max_t(int, pf_max_frame, 688 IXGBE_FCOE_JUMBO_FRAME_SIZE); 689 690 #endif /* CONFIG_FCOE */ 691 if (pf_max_frame > ETH_FRAME_LEN) 692 reg &= ~(1 << vf_shift); 693 } 694 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 695 696 /* enable VF mailbox for further messages */ 697 adapter->vfinfo[vf].clear_to_send = true; 698 699 /* Enable counting of spoofed packets in the SSVPC register */ 700 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 701 reg |= (1 << vf_shift); 702 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 703 704 /* 705 * Reset the VFs TDWBAL and TDWBAH registers 706 * which are not cleared by an FLR 707 */ 708 for (i = 0; i < q_per_pool; i++) { 709 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 710 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 711 } 712 713 /* reply to reset with ack and vf mac address */ 714 msgbuf[0] = IXGBE_VF_RESET; 715 if (!is_zero_ether_addr(vf_mac)) { 716 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 717 memcpy(addr, vf_mac, ETH_ALEN); 718 } else { 719 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 720 dev_warn(&adapter->pdev->dev, 721 "VF %d has no MAC address assigned, you may have to assign one manually\n", 722 vf); 723 } 724 725 /* 726 * Piggyback the multicast filter type so VF can compute the 727 * correct vectors 728 */ 729 msgbuf[3] = hw->mac.mc_filter_type; 730 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 731 732 return 0; 733 } 734 735 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 736 u32 *msgbuf, u32 vf) 737 { 738 u8 *new_mac = ((u8 *)(&msgbuf[1])); 739 740 if (!is_valid_ether_addr(new_mac)) { 741 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 742 return -1; 743 } 744 745 if (adapter->vfinfo[vf].pf_set_mac && 746 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 747 e_warn(drv, 748 "VF %d attempted to override administratively set MAC address\n" 749 "Reload the VF driver to resume operations\n", 750 vf); 751 return -1; 752 } 753 754 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 755 } 756 757 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) 758 { 759 u32 vlvf; 760 s32 regindex; 761 762 /* short cut the special case */ 763 if (vlan == 0) 764 return 0; 765 766 /* Search for the vlan id in the VLVF entries */ 767 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) { 768 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex)); 769 if ((vlvf & VLAN_VID_MASK) == vlan) 770 break; 771 } 772 773 /* Return a negative value if not found */ 774 if (regindex >= IXGBE_VLVF_ENTRIES) 775 regindex = -1; 776 777 return regindex; 778 } 779 780 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 781 u32 *msgbuf, u32 vf) 782 { 783 struct ixgbe_hw *hw = &adapter->hw; 784 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 785 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 786 int err; 787 s32 reg_ndx; 788 u32 vlvf; 789 u32 bits; 790 u8 tcs = netdev_get_num_tc(adapter->netdev); 791 792 if (adapter->vfinfo[vf].pf_vlan || tcs) { 793 e_warn(drv, 794 "VF %d attempted to override administratively set VLAN configuration\n" 795 "Reload the VF driver to resume operations\n", 796 vf); 797 return -1; 798 } 799 800 if (add) 801 adapter->vfinfo[vf].vlan_count++; 802 else if (adapter->vfinfo[vf].vlan_count) 803 adapter->vfinfo[vf].vlan_count--; 804 805 /* in case of promiscuous mode any VLAN filter set for a VF must 806 * also have the PF pool added to it. 807 */ 808 if (add && adapter->netdev->flags & IFF_PROMISC) 809 err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0)); 810 811 err = ixgbe_set_vf_vlan(adapter, add, vid, vf); 812 if (!err && adapter->vfinfo[vf].spoofchk_enabled) 813 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 814 815 /* Go through all the checks to see if the VLAN filter should 816 * be wiped completely. 817 */ 818 if (!add && adapter->netdev->flags & IFF_PROMISC) { 819 reg_ndx = ixgbe_find_vlvf_entry(hw, vid); 820 if (reg_ndx < 0) 821 return err; 822 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx)); 823 /* See if any other pools are set for this VLAN filter 824 * entry other than the PF. 825 */ 826 if (VMDQ_P(0) < 32) { 827 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2)); 828 bits &= ~(1 << VMDQ_P(0)); 829 bits |= IXGBE_READ_REG(hw, 830 IXGBE_VLVFB(reg_ndx * 2) + 1); 831 } else { 832 bits = IXGBE_READ_REG(hw, 833 IXGBE_VLVFB(reg_ndx * 2) + 1); 834 bits &= ~(1 << (VMDQ_P(0) - 32)); 835 bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2)); 836 } 837 838 /* If the filter was removed then ensure PF pool bit 839 * is cleared if the PF only added itself to the pool 840 * because the PF is in promiscuous mode. 841 */ 842 if ((vlvf & VLAN_VID_MASK) == vid && 843 !test_bit(vid, adapter->active_vlans) && !bits) 844 ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0)); 845 } 846 847 return err; 848 } 849 850 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 851 u32 *msgbuf, u32 vf) 852 { 853 u8 *new_mac = ((u8 *)(&msgbuf[1])); 854 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 855 IXGBE_VT_MSGINFO_SHIFT; 856 int err; 857 858 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 859 e_warn(drv, 860 "VF %d requested MACVLAN filter but is administratively denied\n", 861 vf); 862 return -1; 863 } 864 865 /* An non-zero index indicates the VF is setting a filter */ 866 if (index) { 867 if (!is_valid_ether_addr(new_mac)) { 868 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 869 return -1; 870 } 871 872 /* 873 * If the VF is allowed to set MAC filters then turn off 874 * anti-spoofing to avoid false positives. 875 */ 876 if (adapter->vfinfo[vf].spoofchk_enabled) 877 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 878 } 879 880 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 881 if (err == -ENOSPC) 882 e_warn(drv, 883 "VF %d has requested a MACVLAN filter but there is no space for it\n", 884 vf); 885 886 return err < 0; 887 } 888 889 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 890 u32 *msgbuf, u32 vf) 891 { 892 int api = msgbuf[1]; 893 894 switch (api) { 895 case ixgbe_mbox_api_10: 896 case ixgbe_mbox_api_11: 897 adapter->vfinfo[vf].vf_api = api; 898 return 0; 899 default: 900 break; 901 } 902 903 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 904 905 return -1; 906 } 907 908 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 909 u32 *msgbuf, u32 vf) 910 { 911 struct net_device *dev = adapter->netdev; 912 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 913 unsigned int default_tc = 0; 914 u8 num_tcs = netdev_get_num_tc(dev); 915 916 /* verify the PF is supporting the correct APIs */ 917 switch (adapter->vfinfo[vf].vf_api) { 918 case ixgbe_mbox_api_20: 919 case ixgbe_mbox_api_11: 920 break; 921 default: 922 return -1; 923 } 924 925 /* only allow 1 Tx queue for bandwidth limiting */ 926 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 927 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 928 929 /* if TCs > 1 determine which TC belongs to default user priority */ 930 if (num_tcs > 1) 931 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 932 933 /* notify VF of need for VLAN tag stripping, and correct queue */ 934 if (num_tcs) 935 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 936 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 937 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 938 else 939 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 940 941 /* notify VF of default queue */ 942 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 943 944 return 0; 945 } 946 947 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 948 { 949 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 950 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 951 struct ixgbe_hw *hw = &adapter->hw; 952 s32 retval; 953 954 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 955 956 if (retval) { 957 pr_err("Error receiving message from VF\n"); 958 return retval; 959 } 960 961 /* this is a message we already processed, do nothing */ 962 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 963 return 0; 964 965 /* flush the ack before we write any messages back */ 966 IXGBE_WRITE_FLUSH(hw); 967 968 if (msgbuf[0] == IXGBE_VF_RESET) 969 return ixgbe_vf_reset_msg(adapter, vf); 970 971 /* 972 * until the vf completes a virtual function reset it should not be 973 * allowed to start any configuration. 974 */ 975 if (!adapter->vfinfo[vf].clear_to_send) { 976 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 977 ixgbe_write_mbx(hw, msgbuf, 1, vf); 978 return 0; 979 } 980 981 switch ((msgbuf[0] & 0xFFFF)) { 982 case IXGBE_VF_SET_MAC_ADDR: 983 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 984 break; 985 case IXGBE_VF_SET_MULTICAST: 986 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 987 break; 988 case IXGBE_VF_SET_VLAN: 989 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 990 break; 991 case IXGBE_VF_SET_LPE: 992 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 993 break; 994 case IXGBE_VF_SET_MACVLAN: 995 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 996 break; 997 case IXGBE_VF_API_NEGOTIATE: 998 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 999 break; 1000 case IXGBE_VF_GET_QUEUES: 1001 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1002 break; 1003 default: 1004 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1005 retval = IXGBE_ERR_MBX; 1006 break; 1007 } 1008 1009 /* notify the VF of the results of what it sent us */ 1010 if (retval) 1011 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1012 else 1013 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1014 1015 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1016 1017 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1018 1019 return retval; 1020 } 1021 1022 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1023 { 1024 struct ixgbe_hw *hw = &adapter->hw; 1025 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1026 1027 /* if device isn't clear to send it shouldn't be reading either */ 1028 if (!adapter->vfinfo[vf].clear_to_send) 1029 ixgbe_write_mbx(hw, &msg, 1, vf); 1030 } 1031 1032 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1033 { 1034 struct ixgbe_hw *hw = &adapter->hw; 1035 u32 vf; 1036 1037 for (vf = 0; vf < adapter->num_vfs; vf++) { 1038 /* process any reset requests */ 1039 if (!ixgbe_check_for_rst(hw, vf)) 1040 ixgbe_vf_reset_event(adapter, vf); 1041 1042 /* process any messages pending */ 1043 if (!ixgbe_check_for_msg(hw, vf)) 1044 ixgbe_rcv_msg_from_vf(adapter, vf); 1045 1046 /* process any acks */ 1047 if (!ixgbe_check_for_ack(hw, vf)) 1048 ixgbe_rcv_ack_from_vf(adapter, vf); 1049 } 1050 } 1051 1052 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1053 { 1054 struct ixgbe_hw *hw = &adapter->hw; 1055 1056 /* disable transmit and receive for all vfs */ 1057 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1058 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1059 1060 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1061 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1062 } 1063 1064 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1065 { 1066 struct ixgbe_hw *hw = &adapter->hw; 1067 u32 ping; 1068 int i; 1069 1070 for (i = 0 ; i < adapter->num_vfs; i++) { 1071 ping = IXGBE_PF_CONTROL_MSG; 1072 if (adapter->vfinfo[i].clear_to_send) 1073 ping |= IXGBE_VT_MSGTYPE_CTS; 1074 ixgbe_write_mbx(hw, &ping, 1, i); 1075 } 1076 } 1077 1078 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1079 { 1080 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1081 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 1082 return -EINVAL; 1083 adapter->vfinfo[vf].pf_set_mac = true; 1084 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 1085 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 1086 " change effective."); 1087 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1088 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 1089 " but the PF device is not up.\n"); 1090 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 1091 " attempting to use the VF device.\n"); 1092 } 1093 return ixgbe_set_vf_mac(adapter, vf, mac); 1094 } 1095 1096 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1097 u16 vlan, u8 qos) 1098 { 1099 struct ixgbe_hw *hw = &adapter->hw; 1100 int err = 0; 1101 1102 if (adapter->vfinfo[vf].pf_vlan) 1103 err = ixgbe_set_vf_vlan(adapter, false, 1104 adapter->vfinfo[vf].pf_vlan, 1105 vf); 1106 if (err) 1107 goto out; 1108 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1109 ixgbe_set_vmolr(hw, vf, false); 1110 if (adapter->vfinfo[vf].spoofchk_enabled) 1111 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 1112 adapter->vfinfo[vf].vlan_count++; 1113 1114 /* enable hide vlan on X550 */ 1115 if (hw->mac.type >= ixgbe_mac_X550) 1116 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1117 IXGBE_QDE_HIDE_VLAN); 1118 1119 adapter->vfinfo[vf].pf_vlan = vlan; 1120 adapter->vfinfo[vf].pf_qos = qos; 1121 dev_info(&adapter->pdev->dev, 1122 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1123 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1124 dev_warn(&adapter->pdev->dev, 1125 "The VF VLAN has been set, but the PF device is not up.\n"); 1126 dev_warn(&adapter->pdev->dev, 1127 "Bring the PF device up before attempting to use the VF device.\n"); 1128 } 1129 1130 out: 1131 return err; 1132 } 1133 1134 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1135 { 1136 struct ixgbe_hw *hw = &adapter->hw; 1137 int err; 1138 1139 err = ixgbe_set_vf_vlan(adapter, false, 1140 adapter->vfinfo[vf].pf_vlan, vf); 1141 ixgbe_clear_vmvir(adapter, vf); 1142 ixgbe_set_vmolr(hw, vf, true); 1143 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 1144 if (adapter->vfinfo[vf].vlan_count) 1145 adapter->vfinfo[vf].vlan_count--; 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