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#include <linux/if_bridge.h> 40#ifdef NETIF_F_HW_VLAN_CTAG_TX 41#include <linux/if_vlan.h> 42#endif 43 44#include "ixgbe.h" 45#include "ixgbe_type.h" 46#include "ixgbe_sriov.h" 47 48#ifdef CONFIG_PCI_IOV 49static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter) 50{ 51 struct ixgbe_hw *hw = &adapter->hw; 52 int num_vf_macvlans, i; 53 struct vf_macvlans *mv_list; 54 55 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; 56 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs); 57 58 /* Enable VMDq flag so device will be set in VM mode */ 59 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED; 60 if (!adapter->ring_feature[RING_F_VMDQ].limit) 61 adapter->ring_feature[RING_F_VMDQ].limit = 1; 62 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs; 63 64 num_vf_macvlans = hw->mac.num_rar_entries - 65 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs); 66 67 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans, 68 sizeof(struct vf_macvlans), 69 GFP_KERNEL); 70 if (mv_list) { 71 /* Initialize list of VF macvlans */ 72 INIT_LIST_HEAD(&adapter->vf_mvs.l); 73 for (i = 0; i < num_vf_macvlans; i++) { 74 mv_list->vf = -1; 75 mv_list->free = true; 76 list_add(&mv_list->l, &adapter->vf_mvs.l); 77 mv_list++; 78 } 79 } 80 81 /* Initialize default switching mode VEB */ 82 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 83 adapter->bridge_mode = BRIDGE_MODE_VEB; 84 85 /* If call to enable VFs succeeded then allocate memory 86 * for per VF control structures. 87 */ 88 adapter->vfinfo = 89 kcalloc(adapter->num_vfs, 90 sizeof(struct vf_data_storage), GFP_KERNEL); 91 if (adapter->vfinfo) { 92 /* limit trafffic classes based on VFs enabled */ 93 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && 94 (adapter->num_vfs < 16)) { 95 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 96 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 97 } else if (adapter->num_vfs < 32) { 98 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 99 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 100 } else { 101 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 102 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 103 } 104 105 /* Disable RSC when in SR-IOV mode */ 106 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 107 IXGBE_FLAG2_RSC_ENABLED); 108 109 for (i = 0; i < adapter->num_vfs; i++) { 110 /* enable spoof checking for all VFs */ 111 adapter->vfinfo[i].spoofchk_enabled = true; 112 113 /* We support VF RSS querying only for 82599 and x540 114 * devices at the moment. These devices share RSS 115 * indirection table and RSS hash key with PF therefore 116 * we want to disable the querying by default. 117 */ 118 adapter->vfinfo[i].rss_query_enabled = 0; 119 } 120 121 return 0; 122 } 123 124 return -ENOMEM; 125} 126 127/* Note this function is called when the user wants to enable SR-IOV 128 * VFs using the now deprecated module parameter 129 */ 130void ixgbe_enable_sriov(struct ixgbe_adapter *adapter) 131{ 132 int pre_existing_vfs = 0; 133 134 pre_existing_vfs = pci_num_vf(adapter->pdev); 135 if (!pre_existing_vfs && !adapter->num_vfs) 136 return; 137 138 /* If there are pre-existing VFs then we have to force 139 * use of that many - over ride any module parameter value. 140 * This may result from the user unloading the PF driver 141 * while VFs were assigned to guest VMs or because the VFs 142 * have been created via the new PCI SR-IOV sysfs interface. 143 */ 144 if (pre_existing_vfs) { 145 adapter->num_vfs = pre_existing_vfs; 146 dev_warn(&adapter->pdev->dev, 147 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); 148 } else { 149 int err; 150 /* 151 * The 82599 supports up to 64 VFs per physical function 152 * but this implementation limits allocation to 63 so that 153 * basic networking resources are still available to the 154 * physical function. If the user requests greater than 155 * 63 VFs then it is an error - reset to default of zero. 156 */ 157 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT); 158 159 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); 160 if (err) { 161 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 162 adapter->num_vfs = 0; 163 return; 164 } 165 } 166 167 if (!__ixgbe_enable_sriov(adapter)) 168 return; 169 170 /* If we have gotten to this point then there is no memory available 171 * to manage the VF devices - print message and bail. 172 */ 173 e_err(probe, "Unable to allocate memory for VF Data Storage - " 174 "SRIOV disabled\n"); 175 ixgbe_disable_sriov(adapter); 176} 177 178#endif /* #ifdef CONFIG_PCI_IOV */ 179int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 180{ 181 struct ixgbe_hw *hw = &adapter->hw; 182 u32 gpie; 183 u32 vmdctl; 184 int rss; 185 186 /* set num VFs to 0 to prevent access to vfinfo */ 187 adapter->num_vfs = 0; 188 189 /* free VF control structures */ 190 kfree(adapter->vfinfo); 191 adapter->vfinfo = NULL; 192 193 /* free macvlan list */ 194 kfree(adapter->mv_list); 195 adapter->mv_list = NULL; 196 197 /* if SR-IOV is already disabled then there is nothing to do */ 198 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 199 return 0; 200 201#ifdef CONFIG_PCI_IOV 202 /* 203 * If our VFs are assigned we cannot shut down SR-IOV 204 * without causing issues, so just leave the hardware 205 * available but disabled 206 */ 207 if (pci_vfs_assigned(adapter->pdev)) { 208 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 209 return -EPERM; 210 } 211 /* disable iov and allow time for transactions to clear */ 212 pci_disable_sriov(adapter->pdev); 213#endif 214 215 /* turn off device IOV mode */ 216 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0); 217 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 218 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 219 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 220 221 /* set default pool back to 0 */ 222 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 223 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 224 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 225 IXGBE_WRITE_FLUSH(hw); 226 227 /* Disable VMDq flag so device will be set in VM mode */ 228 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) { 229 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 230 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 231 rss = min_t(int, ixgbe_max_rss_indices(adapter), 232 num_online_cpus()); 233 } else { 234 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); 235 } 236 237 adapter->ring_feature[RING_F_VMDQ].offset = 0; 238 adapter->ring_feature[RING_F_RSS].limit = rss; 239 240 /* take a breather then clean up driver data */ 241 msleep(100); 242 return 0; 243} 244 245static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) 246{ 247#ifdef CONFIG_PCI_IOV 248 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 249 int err = 0; 250 int i; 251 int pre_existing_vfs = pci_num_vf(dev); 252 253 if (pre_existing_vfs && pre_existing_vfs != num_vfs) 254 err = ixgbe_disable_sriov(adapter); 255 else if (pre_existing_vfs && pre_existing_vfs == num_vfs) 256 return num_vfs; 257 258 if (err) 259 return err; 260 261 /* While the SR-IOV capability structure reports total VFs to be 64, 262 * we have to limit the actual number allocated based on two factors. 263 * First, we reserve some transmit/receive resources for the PF. 264 * Second, VMDQ also uses the same pools that SR-IOV does. We need to 265 * account for this, so that we don't accidentally allocate more VFs 266 * than we have available pools. The PCI bus driver already checks for 267 * other values out of range. 268 */ 269 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS) 270 return -EPERM; 271 272 adapter->num_vfs = num_vfs; 273 274 err = __ixgbe_enable_sriov(adapter); 275 if (err) 276 return err; 277 278 for (i = 0; i < adapter->num_vfs; i++) 279 ixgbe_vf_configuration(dev, (i | 0x10000000)); 280 281 err = pci_enable_sriov(dev, num_vfs); 282 if (err) { 283 e_dev_warn("Failed to enable PCI sriov: %d\n", err); 284 return err; 285 } 286 ixgbe_sriov_reinit(adapter); 287 288 return num_vfs; 289#else 290 return 0; 291#endif 292} 293 294static int ixgbe_pci_sriov_disable(struct pci_dev *dev) 295{ 296 struct ixgbe_adapter *adapter = pci_get_drvdata(dev); 297 int err; 298#ifdef CONFIG_PCI_IOV 299 u32 current_flags = adapter->flags; 300#endif 301 302 err = ixgbe_disable_sriov(adapter); 303 304 /* Only reinit if no error and state changed */ 305#ifdef CONFIG_PCI_IOV 306 if (!err && current_flags != adapter->flags) 307 ixgbe_sriov_reinit(adapter); 308#endif 309 310 return err; 311} 312 313int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 314{ 315 if (num_vfs == 0) 316 return ixgbe_pci_sriov_disable(dev); 317 else 318 return ixgbe_pci_sriov_enable(dev, num_vfs); 319} 320 321static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 322 u32 *msgbuf, u32 vf) 323{ 324 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 325 >> IXGBE_VT_MSGINFO_SHIFT; 326 u16 *hash_list = (u16 *)&msgbuf[1]; 327 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 328 struct ixgbe_hw *hw = &adapter->hw; 329 int i; 330 u32 vector_bit; 331 u32 vector_reg; 332 u32 mta_reg; 333 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 334 335 /* only so many hash values supported */ 336 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 337 338 /* 339 * salt away the number of multi cast addresses assigned 340 * to this VF for later use to restore when the PF multi cast 341 * list changes 342 */ 343 vfinfo->num_vf_mc_hashes = entries; 344 345 /* 346 * VFs are limited to using the MTA hash table for their multicast 347 * addresses 348 */ 349 for (i = 0; i < entries; i++) { 350 vfinfo->vf_mc_hashes[i] = hash_list[i]; 351 } 352 353 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 354 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 355 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 356 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 357 mta_reg |= (1 << vector_bit); 358 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 359 } 360 vmolr |= IXGBE_VMOLR_ROMPE; 361 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 362 363 return 0; 364} 365 366#ifdef CONFIG_PCI_IOV 367void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 368{ 369 struct ixgbe_hw *hw = &adapter->hw; 370 struct vf_data_storage *vfinfo; 371 int i, j; 372 u32 vector_bit; 373 u32 vector_reg; 374 u32 mta_reg; 375 376 for (i = 0; i < adapter->num_vfs; i++) { 377 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); 378 vfinfo = &adapter->vfinfo[i]; 379 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 380 hw->addr_ctrl.mta_in_use++; 381 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 382 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 383 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 384 mta_reg |= (1 << vector_bit); 385 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 386 } 387 388 if (vfinfo->num_vf_mc_hashes) 389 vmolr |= IXGBE_VMOLR_ROMPE; 390 else 391 vmolr &= ~IXGBE_VMOLR_ROMPE; 392 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); 393 } 394 395 /* Restore any VF macvlans */ 396 ixgbe_full_sync_mac_table(adapter); 397} 398#endif 399 400static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 401 u32 vf) 402{ 403 /* VLAN 0 is a special case, don't allow it to be removed */ 404 if (!vid && !add) 405 return 0; 406 407 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 408} 409 410static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 411{ 412 struct ixgbe_hw *hw = &adapter->hw; 413 int max_frame = msgbuf[1]; 414 u32 max_frs; 415 416 /* 417 * For 82599EB we have to keep all PFs and VFs operating with 418 * the same max_frame value in order to avoid sending an oversize 419 * frame to a VF. In order to guarantee this is handled correctly 420 * for all cases we have several special exceptions to take into 421 * account before we can enable the VF for receive 422 */ 423 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 424 struct net_device *dev = adapter->netdev; 425 int pf_max_frame = dev->mtu + ETH_HLEN; 426 u32 reg_offset, vf_shift, vfre; 427 s32 err = 0; 428 429#ifdef CONFIG_FCOE 430 if (dev->features & NETIF_F_FCOE_MTU) 431 pf_max_frame = max_t(int, pf_max_frame, 432 IXGBE_FCOE_JUMBO_FRAME_SIZE); 433 434#endif /* CONFIG_FCOE */ 435 switch (adapter->vfinfo[vf].vf_api) { 436 case ixgbe_mbox_api_11: 437 case ixgbe_mbox_api_12: 438 /* 439 * Version 1.1 supports jumbo frames on VFs if PF has 440 * jumbo frames enabled which means legacy VFs are 441 * disabled 442 */ 443 if (pf_max_frame > ETH_FRAME_LEN) 444 break; 445 default: 446 /* 447 * If the PF or VF are running w/ jumbo frames enabled 448 * we need to shut down the VF Rx path as we cannot 449 * support jumbo frames on legacy VFs 450 */ 451 if ((pf_max_frame > ETH_FRAME_LEN) || 452 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 453 err = -EINVAL; 454 break; 455 } 456 457 /* determine VF receive enable location */ 458 vf_shift = vf % 32; 459 reg_offset = vf / 32; 460 461 /* enable or disable receive depending on error */ 462 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 463 if (err) 464 vfre &= ~(1 << vf_shift); 465 else 466 vfre |= 1 << vf_shift; 467 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 468 469 if (err) { 470 e_err(drv, "VF max_frame %d out of range\n", max_frame); 471 return err; 472 } 473 } 474 475 /* MTU < 68 is an error and causes problems on some kernels */ 476 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 477 e_err(drv, "VF max_frame %d out of range\n", max_frame); 478 return -EINVAL; 479 } 480 481 /* pull current max frame size from hardware */ 482 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 483 max_frs &= IXGBE_MHADD_MFS_MASK; 484 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 485 486 if (max_frs < max_frame) { 487 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 488 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 489 } 490 491 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 492 493 return 0; 494} 495 496static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 497{ 498 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 499 vmolr |= IXGBE_VMOLR_BAM; 500 if (aupe) 501 vmolr |= IXGBE_VMOLR_AUPE; 502 else 503 vmolr &= ~IXGBE_VMOLR_AUPE; 504 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 505} 506 507static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 508{ 509 struct ixgbe_hw *hw = &adapter->hw; 510 511 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 512} 513static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 514{ 515 struct ixgbe_hw *hw = &adapter->hw; 516 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 517 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 518 519 /* add PF assigned VLAN or VLAN 0 */ 520 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 521 522 /* reset offloads to defaults */ 523 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 524 525 /* set outgoing tags for VFs */ 526 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 527 ixgbe_clear_vmvir(adapter, vf); 528 } else { 529 if (vfinfo->pf_qos || !num_tcs) 530 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 531 vfinfo->pf_qos, vf); 532 else 533 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 534 adapter->default_up, vf); 535 536 if (vfinfo->spoofchk_enabled) 537 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 538 } 539 540 /* reset multicast table array for vf */ 541 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 542 543 /* Flush and reset the mta with the new values */ 544 ixgbe_set_rx_mode(adapter->netdev); 545 546 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 547 548 /* reset VF api back to unknown */ 549 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 550} 551 552static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 553 int vf, unsigned char *mac_addr) 554{ 555 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 556 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN); 557 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); 558 559 return 0; 560} 561 562static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 563 int vf, int index, unsigned char *mac_addr) 564{ 565 struct list_head *pos; 566 struct vf_macvlans *entry; 567 568 if (index <= 1) { 569 list_for_each(pos, &adapter->vf_mvs.l) { 570 entry = list_entry(pos, struct vf_macvlans, l); 571 if (entry->vf == vf) { 572 entry->vf = -1; 573 entry->free = true; 574 entry->is_macvlan = false; 575 ixgbe_del_mac_filter(adapter, 576 entry->vf_macvlan, vf); 577 } 578 } 579 } 580 581 /* 582 * If index was zero then we were asked to clear the uc list 583 * for the VF. We're done. 584 */ 585 if (!index) 586 return 0; 587 588 entry = NULL; 589 590 list_for_each(pos, &adapter->vf_mvs.l) { 591 entry = list_entry(pos, struct vf_macvlans, l); 592 if (entry->free) 593 break; 594 } 595 596 /* 597 * If we traversed the entire list and didn't find a free entry 598 * then we're out of space on the RAR table. Also entry may 599 * be NULL because the original memory allocation for the list 600 * failed, which is not fatal but does mean we can't support 601 * VF requests for MACVLAN because we couldn't allocate 602 * memory for the list management required. 603 */ 604 if (!entry || !entry->free) 605 return -ENOSPC; 606 607 entry->free = false; 608 entry->is_macvlan = true; 609 entry->vf = vf; 610 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 611 612 ixgbe_add_mac_filter(adapter, mac_addr, vf); 613 614 return 0; 615} 616 617int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 618{ 619 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 620 unsigned int vfn = (event_mask & 0x3f); 621 622 bool enable = ((event_mask & 0x10000000U) != 0); 623 624 if (enable) 625 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); 626 627 return 0; 628} 629 630static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, 631 u32 qde) 632{ 633 struct ixgbe_hw *hw = &adapter->hw; 634 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 635 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 636 int i; 637 638 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { 639 u32 reg; 640 641 /* flush previous write */ 642 IXGBE_WRITE_FLUSH(hw); 643 644 /* indicate to hardware that we want to set drop enable */ 645 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE; 646 reg |= i << IXGBE_QDE_IDX_SHIFT; 647 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); 648 } 649} 650 651static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 652{ 653 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 654 struct ixgbe_hw *hw = &adapter->hw; 655 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 656 u32 reg, reg_offset, vf_shift; 657 u32 msgbuf[4] = {0, 0, 0, 0}; 658 u8 *addr = (u8 *)(&msgbuf[1]); 659 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 660 int i; 661 662 e_info(probe, "VF Reset msg received from vf %d\n", vf); 663 664 /* reset the filters for the device */ 665 ixgbe_vf_reset_event(adapter, vf); 666 667 /* set vf mac address */ 668 if (!is_zero_ether_addr(vf_mac)) 669 ixgbe_set_vf_mac(adapter, vf, vf_mac); 670 671 vf_shift = vf % 32; 672 reg_offset = vf / 32; 673 674 /* enable transmit for vf */ 675 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 676 reg |= 1 << vf_shift; 677 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 678 679 /* force drop enable for all VF Rx queues */ 680 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 681 682 /* enable receive for vf */ 683 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 684 reg |= 1 << vf_shift; 685 /* 686 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 687 * For more info take a look at ixgbe_set_vf_lpe 688 */ 689 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 690 struct net_device *dev = adapter->netdev; 691 int pf_max_frame = dev->mtu + ETH_HLEN; 692 693#ifdef CONFIG_FCOE 694 if (dev->features & NETIF_F_FCOE_MTU) 695 pf_max_frame = max_t(int, pf_max_frame, 696 IXGBE_FCOE_JUMBO_FRAME_SIZE); 697 698#endif /* CONFIG_FCOE */ 699 if (pf_max_frame > ETH_FRAME_LEN) 700 reg &= ~(1 << vf_shift); 701 } 702 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 703 704 /* enable VF mailbox for further messages */ 705 adapter->vfinfo[vf].clear_to_send = true; 706 707 /* Enable counting of spoofed packets in the SSVPC register */ 708 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 709 reg |= (1 << vf_shift); 710 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 711 712 /* 713 * Reset the VFs TDWBAL and TDWBAH registers 714 * which are not cleared by an FLR 715 */ 716 for (i = 0; i < q_per_pool; i++) { 717 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); 718 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); 719 } 720 721 /* reply to reset with ack and vf mac address */ 722 msgbuf[0] = IXGBE_VF_RESET; 723 if (!is_zero_ether_addr(vf_mac)) { 724 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 725 memcpy(addr, vf_mac, ETH_ALEN); 726 } else { 727 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 728 dev_warn(&adapter->pdev->dev, 729 "VF %d has no MAC address assigned, you may have to assign one manually\n", 730 vf); 731 } 732 733 /* 734 * Piggyback the multicast filter type so VF can compute the 735 * correct vectors 736 */ 737 msgbuf[3] = hw->mac.mc_filter_type; 738 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 739 740 return 0; 741} 742 743static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 744 u32 *msgbuf, u32 vf) 745{ 746 u8 *new_mac = ((u8 *)(&msgbuf[1])); 747 748 if (!is_valid_ether_addr(new_mac)) { 749 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 750 return -1; 751 } 752 753 if (adapter->vfinfo[vf].pf_set_mac && 754 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { 755 e_warn(drv, 756 "VF %d attempted to override administratively set MAC address\n" 757 "Reload the VF driver to resume operations\n", 758 vf); 759 return -1; 760 } 761 762 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 763} 764 765static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) 766{ 767 u32 vlvf; 768 s32 regindex; 769 770 /* short cut the special case */ 771 if (vlan == 0) 772 return 0; 773 774 /* Search for the vlan id in the VLVF entries */ 775 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) { 776 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex)); 777 if ((vlvf & VLAN_VID_MASK) == vlan) 778 break; 779 } 780 781 /* Return a negative value if not found */ 782 if (regindex >= IXGBE_VLVF_ENTRIES) 783 regindex = -1; 784 785 return regindex; 786} 787 788static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 789 u32 *msgbuf, u32 vf) 790{ 791 struct ixgbe_hw *hw = &adapter->hw; 792 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 793 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 794 int err; 795 s32 reg_ndx; 796 u32 vlvf; 797 u32 bits; 798 u8 tcs = netdev_get_num_tc(adapter->netdev); 799 800 if (adapter->vfinfo[vf].pf_vlan || tcs) { 801 e_warn(drv, 802 "VF %d attempted to override administratively set VLAN configuration\n" 803 "Reload the VF driver to resume operations\n", 804 vf); 805 return -1; 806 } 807 808 if (add) 809 adapter->vfinfo[vf].vlan_count++; 810 else if (adapter->vfinfo[vf].vlan_count) 811 adapter->vfinfo[vf].vlan_count--; 812 813 /* in case of promiscuous mode any VLAN filter set for a VF must 814 * also have the PF pool added to it. 815 */ 816 if (add && adapter->netdev->flags & IFF_PROMISC) 817 err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0)); 818 819 err = ixgbe_set_vf_vlan(adapter, add, vid, vf); 820 if (!err && adapter->vfinfo[vf].spoofchk_enabled) 821 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 822 823 /* Go through all the checks to see if the VLAN filter should 824 * be wiped completely. 825 */ 826 if (!add && adapter->netdev->flags & IFF_PROMISC) { 827 reg_ndx = ixgbe_find_vlvf_entry(hw, vid); 828 if (reg_ndx < 0) 829 return err; 830 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx)); 831 /* See if any other pools are set for this VLAN filter 832 * entry other than the PF. 833 */ 834 if (VMDQ_P(0) < 32) { 835 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2)); 836 bits &= ~(1 << VMDQ_P(0)); 837 bits |= IXGBE_READ_REG(hw, 838 IXGBE_VLVFB(reg_ndx * 2) + 1); 839 } else { 840 bits = IXGBE_READ_REG(hw, 841 IXGBE_VLVFB(reg_ndx * 2) + 1); 842 bits &= ~(1 << (VMDQ_P(0) - 32)); 843 bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2)); 844 } 845 846 /* If the filter was removed then ensure PF pool bit 847 * is cleared if the PF only added itself to the pool 848 * because the PF is in promiscuous mode. 849 */ 850 if ((vlvf & VLAN_VID_MASK) == vid && 851 !test_bit(vid, adapter->active_vlans) && !bits) 852 ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0)); 853 } 854 855 return err; 856} 857 858static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 859 u32 *msgbuf, u32 vf) 860{ 861 u8 *new_mac = ((u8 *)(&msgbuf[1])); 862 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 863 IXGBE_VT_MSGINFO_SHIFT; 864 int err; 865 866 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 867 e_warn(drv, 868 "VF %d requested MACVLAN filter but is administratively denied\n", 869 vf); 870 return -1; 871 } 872 873 /* An non-zero index indicates the VF is setting a filter */ 874 if (index) { 875 if (!is_valid_ether_addr(new_mac)) { 876 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 877 return -1; 878 } 879 880 /* 881 * If the VF is allowed to set MAC filters then turn off 882 * anti-spoofing to avoid false positives. 883 */ 884 if (adapter->vfinfo[vf].spoofchk_enabled) 885 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 886 } 887 888 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 889 if (err == -ENOSPC) 890 e_warn(drv, 891 "VF %d has requested a MACVLAN filter but there is no space for it\n", 892 vf); 893 894 return err < 0; 895} 896 897static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 898 u32 *msgbuf, u32 vf) 899{ 900 int api = msgbuf[1]; 901 902 switch (api) { 903 case ixgbe_mbox_api_10: 904 case ixgbe_mbox_api_11: 905 case ixgbe_mbox_api_12: 906 adapter->vfinfo[vf].vf_api = api; 907 return 0; 908 default: 909 break; 910 } 911 912 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 913 914 return -1; 915} 916 917static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 918 u32 *msgbuf, u32 vf) 919{ 920 struct net_device *dev = adapter->netdev; 921 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 922 unsigned int default_tc = 0; 923 u8 num_tcs = netdev_get_num_tc(dev); 924 925 /* verify the PF is supporting the correct APIs */ 926 switch (adapter->vfinfo[vf].vf_api) { 927 case ixgbe_mbox_api_20: 928 case ixgbe_mbox_api_11: 929 case ixgbe_mbox_api_12: 930 break; 931 default: 932 return -1; 933 } 934 935 /* only allow 1 Tx queue for bandwidth limiting */ 936 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 937 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 938 939 /* if TCs > 1 determine which TC belongs to default user priority */ 940 if (num_tcs > 1) 941 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 942 943 /* notify VF of need for VLAN tag stripping, and correct queue */ 944 if (num_tcs) 945 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 946 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 947 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 948 else 949 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 950 951 /* notify VF of default queue */ 952 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 953 954 return 0; 955} 956 957static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 958{ 959 u32 i, j; 960 u32 *out_buf = &msgbuf[1]; 961 const u8 *reta = adapter->rss_indir_tbl; 962 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); 963 964 /* Check if operation is permitted */ 965 if (!adapter->vfinfo[vf].rss_query_enabled) 966 return -EPERM; 967 968 /* verify the PF is supporting the correct API */ 969 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12) 970 return -EOPNOTSUPP; 971 972 /* This mailbox command is supported (required) only for 82599 and x540 973 * VFs which support up to 4 RSS queues. Therefore we will compress the 974 * RETA by saving only 2 bits from each entry. This way we will be able 975 * to transfer the whole RETA in a single mailbox operation. 976 */ 977 for (i = 0; i < reta_size / 16; i++) { 978 out_buf[i] = 0; 979 for (j = 0; j < 16; j++) 980 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); 981 } 982 983 return 0; 984} 985 986static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, 987 u32 *msgbuf, u32 vf) 988{ 989 u32 *rss_key = &msgbuf[1]; 990 991 /* Check if the operation is permitted */ 992 if (!adapter->vfinfo[vf].rss_query_enabled) 993 return -EPERM; 994 995 /* verify the PF is supporting the correct API */ 996 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12) 997 return -EOPNOTSUPP; 998 999 memcpy(rss_key, adapter->rss_key, sizeof(adapter->rss_key)); 1000 1001 return 0; 1002} 1003 1004static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1005{ 1006 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 1007 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 1008 struct ixgbe_hw *hw = &adapter->hw; 1009 s32 retval; 1010 1011 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 1012 1013 if (retval) { 1014 pr_err("Error receiving message from VF\n"); 1015 return retval; 1016 } 1017 1018 /* this is a message we already processed, do nothing */ 1019 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 1020 return 0; 1021 1022 /* flush the ack before we write any messages back */ 1023 IXGBE_WRITE_FLUSH(hw); 1024 1025 if (msgbuf[0] == IXGBE_VF_RESET) 1026 return ixgbe_vf_reset_msg(adapter, vf); 1027 1028 /* 1029 * until the vf completes a virtual function reset it should not be 1030 * allowed to start any configuration. 1031 */ 1032 if (!adapter->vfinfo[vf].clear_to_send) { 1033 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1034 ixgbe_write_mbx(hw, msgbuf, 1, vf); 1035 return 0; 1036 } 1037 1038 switch ((msgbuf[0] & 0xFFFF)) { 1039 case IXGBE_VF_SET_MAC_ADDR: 1040 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 1041 break; 1042 case IXGBE_VF_SET_MULTICAST: 1043 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 1044 break; 1045 case IXGBE_VF_SET_VLAN: 1046 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 1047 break; 1048 case IXGBE_VF_SET_LPE: 1049 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 1050 break; 1051 case IXGBE_VF_SET_MACVLAN: 1052 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 1053 break; 1054 case IXGBE_VF_API_NEGOTIATE: 1055 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 1056 break; 1057 case IXGBE_VF_GET_QUEUES: 1058 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 1059 break; 1060 case IXGBE_VF_GET_RETA: 1061 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); 1062 break; 1063 case IXGBE_VF_GET_RSS_KEY: 1064 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); 1065 break; 1066 default: 1067 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 1068 retval = IXGBE_ERR_MBX; 1069 break; 1070 } 1071 1072 /* notify the VF of the results of what it sent us */ 1073 if (retval) 1074 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 1075 else 1076 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 1077 1078 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 1079 1080 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 1081 1082 return retval; 1083} 1084 1085static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 1086{ 1087 struct ixgbe_hw *hw = &adapter->hw; 1088 u32 msg = IXGBE_VT_MSGTYPE_NACK; 1089 1090 /* if device isn't clear to send it shouldn't be reading either */ 1091 if (!adapter->vfinfo[vf].clear_to_send) 1092 ixgbe_write_mbx(hw, &msg, 1, vf); 1093} 1094 1095void ixgbe_msg_task(struct ixgbe_adapter *adapter) 1096{ 1097 struct ixgbe_hw *hw = &adapter->hw; 1098 u32 vf; 1099 1100 for (vf = 0; vf < adapter->num_vfs; vf++) { 1101 /* process any reset requests */ 1102 if (!ixgbe_check_for_rst(hw, vf)) 1103 ixgbe_vf_reset_event(adapter, vf); 1104 1105 /* process any messages pending */ 1106 if (!ixgbe_check_for_msg(hw, vf)) 1107 ixgbe_rcv_msg_from_vf(adapter, vf); 1108 1109 /* process any acks */ 1110 if (!ixgbe_check_for_ack(hw, vf)) 1111 ixgbe_rcv_ack_from_vf(adapter, vf); 1112 } 1113} 1114 1115void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 1116{ 1117 struct ixgbe_hw *hw = &adapter->hw; 1118 1119 /* disable transmit and receive for all vfs */ 1120 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 1121 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 1122 1123 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 1124 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 1125} 1126 1127void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 1128{ 1129 struct ixgbe_hw *hw = &adapter->hw; 1130 u32 ping; 1131 int i; 1132 1133 for (i = 0 ; i < adapter->num_vfs; i++) { 1134 ping = IXGBE_PF_CONTROL_MSG; 1135 if (adapter->vfinfo[i].clear_to_send) 1136 ping |= IXGBE_VT_MSGTYPE_CTS; 1137 ixgbe_write_mbx(hw, &ping, 1, i); 1138 } 1139} 1140 1141int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1142{ 1143 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1144 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 1145 return -EINVAL; 1146 adapter->vfinfo[vf].pf_set_mac = true; 1147 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 1148 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 1149 " change effective."); 1150 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1151 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 1152 " but the PF device is not up.\n"); 1153 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 1154 " attempting to use the VF device.\n"); 1155 } 1156 return ixgbe_set_vf_mac(adapter, vf, mac); 1157} 1158 1159static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, 1160 u16 vlan, u8 qos) 1161{ 1162 struct ixgbe_hw *hw = &adapter->hw; 1163 int err; 1164 1165 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 1166 if (err) 1167 goto out; 1168 1169 ixgbe_set_vmvir(adapter, vlan, qos, vf); 1170 ixgbe_set_vmolr(hw, vf, false); 1171 if (adapter->vfinfo[vf].spoofchk_enabled) 1172 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 1173 adapter->vfinfo[vf].vlan_count++; 1174 1175 /* enable hide vlan on X550 */ 1176 if (hw->mac.type >= ixgbe_mac_X550) 1177 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | 1178 IXGBE_QDE_HIDE_VLAN); 1179 1180 adapter->vfinfo[vf].pf_vlan = vlan; 1181 adapter->vfinfo[vf].pf_qos = qos; 1182 dev_info(&adapter->pdev->dev, 1183 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 1184 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 1185 dev_warn(&adapter->pdev->dev, 1186 "The VF VLAN has been set, but the PF device is not up.\n"); 1187 dev_warn(&adapter->pdev->dev, 1188 "Bring the PF device up before attempting to use the VF device.\n"); 1189 } 1190 1191out: 1192 return err; 1193} 1194 1195static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) 1196{ 1197 struct ixgbe_hw *hw = &adapter->hw; 1198 int err; 1199 1200 err = ixgbe_set_vf_vlan(adapter, false, 1201 adapter->vfinfo[vf].pf_vlan, vf); 1202 ixgbe_clear_vmvir(adapter, vf); 1203 ixgbe_set_vmolr(hw, vf, true); 1204 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 1205 if (adapter->vfinfo[vf].vlan_count) 1206 adapter->vfinfo[vf].vlan_count--; 1207 1208 /* disable hide VLAN on X550 */ 1209 if (hw->mac.type >= ixgbe_mac_X550) 1210 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); 1211 1212 adapter->vfinfo[vf].pf_vlan = 0; 1213 adapter->vfinfo[vf].pf_qos = 0; 1214 1215 return err; 1216} 1217 1218int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 1219{ 1220 int err = 0; 1221 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1222 1223 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 1224 return -EINVAL; 1225 if (vlan || qos) { 1226 /* Check if there is already a port VLAN set, if so 1227 * we have to delete the old one first before we 1228 * can set the new one. The usage model had 1229 * previously assumed the user would delete the 1230 * old port VLAN before setting a new one but this 1231 * is not necessarily the case. 1232 */ 1233 if (adapter->vfinfo[vf].pf_vlan) 1234 err = ixgbe_disable_port_vlan(adapter, vf); 1235 if (err) 1236 goto out; 1237 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); 1238 } else { 1239 err = ixgbe_disable_port_vlan(adapter, vf); 1240 } 1241 1242out: 1243 return err; 1244} 1245 1246static int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1247{ 1248 switch (adapter->link_speed) { 1249 case IXGBE_LINK_SPEED_100_FULL: 1250 return 100; 1251 case IXGBE_LINK_SPEED_1GB_FULL: 1252 return 1000; 1253 case IXGBE_LINK_SPEED_10GB_FULL: 1254 return 10000; 1255 default: 1256 return 0; 1257 } 1258} 1259 1260static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1261{ 1262 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1263 struct ixgbe_hw *hw = &adapter->hw; 1264 u32 bcnrc_val = 0; 1265 u16 queue, queues_per_pool; 1266 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1267 1268 if (tx_rate) { 1269 /* start with base link speed value */ 1270 bcnrc_val = adapter->vf_rate_link_speed; 1271 1272 /* Calculate the rate factor values to set */ 1273 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1274 bcnrc_val /= tx_rate; 1275 1276 /* clear everything but the rate factor */ 1277 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1278 IXGBE_RTTBCNRC_RF_DEC_MASK; 1279 1280 /* enable the rate scheduler */ 1281 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1282 } 1283 1284 /* 1285 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1286 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1287 * and 0x004 otherwise. 1288 */ 1289 switch (hw->mac.type) { 1290 case ixgbe_mac_82599EB: 1291 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1292 break; 1293 case ixgbe_mac_X540: 1294 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1295 break; 1296 default: 1297 break; 1298 } 1299 1300 /* determine how many queues per pool based on VMDq mask */ 1301 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1302 1303 /* write value for all Tx queues belonging to VF */ 1304 for (queue = 0; queue < queues_per_pool; queue++) { 1305 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1306 1307 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1308 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1309 } 1310} 1311 1312void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1313{ 1314 int i; 1315 1316 /* VF Tx rate limit was not set */ 1317 if (!adapter->vf_rate_link_speed) 1318 return; 1319 1320 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1321 adapter->vf_rate_link_speed = 0; 1322 dev_info(&adapter->pdev->dev, 1323 "Link speed has been changed. VF Transmit rate is disabled\n"); 1324 } 1325 1326 for (i = 0; i < adapter->num_vfs; i++) { 1327 if (!adapter->vf_rate_link_speed) 1328 adapter->vfinfo[i].tx_rate = 0; 1329 1330 ixgbe_set_vf_rate_limit(adapter, i); 1331 } 1332} 1333 1334int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, 1335 int max_tx_rate) 1336{ 1337 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1338 int link_speed; 1339 1340 /* verify VF is active */ 1341 if (vf >= adapter->num_vfs) 1342 return -EINVAL; 1343 1344 /* verify link is up */ 1345 if (!adapter->link_up) 1346 return -EINVAL; 1347 1348 /* verify we are linked at 10Gbps */ 1349 link_speed = ixgbe_link_mbps(adapter); 1350 if (link_speed != 10000) 1351 return -EINVAL; 1352 1353 if (min_tx_rate) 1354 return -EINVAL; 1355 1356 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1357 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) 1358 return -EINVAL; 1359 1360 /* store values */ 1361 adapter->vf_rate_link_speed = link_speed; 1362 adapter->vfinfo[vf].tx_rate = max_tx_rate; 1363 1364 /* update hardware configuration */ 1365 ixgbe_set_vf_rate_limit(adapter, vf); 1366 1367 return 0; 1368} 1369 1370int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1371{ 1372 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1373 int vf_target_reg = vf >> 3; 1374 int vf_target_shift = vf % 8; 1375 struct ixgbe_hw *hw = &adapter->hw; 1376 u32 regval; 1377 1378 if (vf >= adapter->num_vfs) 1379 return -EINVAL; 1380 1381 adapter->vfinfo[vf].spoofchk_enabled = setting; 1382 1383 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1384 regval &= ~(1 << vf_target_shift); 1385 regval |= (setting << vf_target_shift); 1386 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1387 1388 if (adapter->vfinfo[vf].vlan_count) { 1389 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT; 1390 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1391 regval &= ~(1 << vf_target_shift); 1392 regval |= (setting << vf_target_shift); 1393 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1394 } 1395 1396 return 0; 1397} 1398 1399int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, 1400 bool setting) 1401{ 1402 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1403 1404 /* This operation is currently supported only for 82599 and x540 1405 * devices. 1406 */ 1407 if (adapter->hw.mac.type < ixgbe_mac_82599EB || 1408 adapter->hw.mac.type >= ixgbe_mac_X550) 1409 return -EOPNOTSUPP; 1410 1411 if (vf >= adapter->num_vfs) 1412 return -EINVAL; 1413 1414 adapter->vfinfo[vf].rss_query_enabled = setting; 1415 1416 return 0; 1417} 1418 1419int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1420 int vf, struct ifla_vf_info *ivi) 1421{ 1422 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1423 if (vf >= adapter->num_vfs) 1424 return -EINVAL; 1425 ivi->vf = vf; 1426 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1427 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; 1428 ivi->min_tx_rate = 0; 1429 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1430 ivi->qos = adapter->vfinfo[vf].pf_qos; 1431 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1432 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; 1433 return 0; 1434} 1435