1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2012 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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 25 26 *******************************************************************************/ 27 28 #include <linux/types.h> 29 #include <linux/module.h> 30 #include <linux/pci.h> 31 #include <linux/netdevice.h> 32 #include <linux/vmalloc.h> 33 #include <linux/string.h> 34 #include <linux/in.h> 35 #include <linux/ip.h> 36 #include <linux/tcp.h> 37 #include <linux/ipv6.h> 38 #ifdef NETIF_F_HW_VLAN_TX 39 #include <linux/if_vlan.h> 40 #endif 41 42 #include "ixgbe.h" 43 #include "ixgbe_type.h" 44 #include "ixgbe_sriov.h" 45 46 #ifdef CONFIG_PCI_IOV 47 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, 48 const struct ixgbe_info *ii) 49 { 50 struct ixgbe_hw *hw = &adapter->hw; 51 int num_vf_macvlans, i; 52 struct vf_macvlans *mv_list; 53 int pre_existing_vfs = 0; 54 55 pre_existing_vfs = pci_num_vf(adapter->pdev); 56 if (!pre_existing_vfs && !adapter->num_vfs) 57 return; 58 59 /* If there are pre-existing VFs then we have to force 60 * use of that many because they were not deleted the last 61 * time someone removed the PF driver. That would have 62 * been because they were allocated to guest VMs and can't 63 * be removed. Go ahead and just re-enable the old amount. 64 * If the user wants to change the number of VFs they can 65 * use ethtool while making sure no VFs are allocated to 66 * guest VMs... i.e. the right way. 67 */ 68 if (pre_existing_vfs) { 69 adapter->num_vfs = pre_existing_vfs; 70 dev_warn(&adapter->pdev->dev, "Virtual Functions already " 71 "enabled for this device - Please reload all " 72 "VF drivers to avoid spoofed packet errors\n"); 73 } else { 74 int err; 75 /* 76 * The 82599 supports up to 64 VFs per physical function 77 * but this implementation limits allocation to 63 so that 78 * basic networking resources are still available to the 79 * physical function. If the user requests greater thn 80 * 63 VFs then it is an error - reset to default of zero. 81 */ 82 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, 63); 83 84 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); 85 if (err) { 86 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 87 adapter->num_vfs = 0; 88 return; 89 } 90 } 91 92 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; 93 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs); 94 95 /* Enable VMDq flag so device will be set in VM mode */ 96 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED; 97 if (!adapter->ring_feature[RING_F_VMDQ].limit) 98 adapter->ring_feature[RING_F_VMDQ].limit = 1; 99 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs; 100 101 num_vf_macvlans = hw->mac.num_rar_entries - 102 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs); 103 104 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans, 105 sizeof(struct vf_macvlans), 106 GFP_KERNEL); 107 if (mv_list) { 108 /* Initialize list of VF macvlans */ 109 INIT_LIST_HEAD(&adapter->vf_mvs.l); 110 for (i = 0; i < num_vf_macvlans; i++) { 111 mv_list->vf = -1; 112 mv_list->free = true; 113 mv_list->rar_entry = hw->mac.num_rar_entries - 114 (i + adapter->num_vfs + 1); 115 list_add(&mv_list->l, &adapter->vf_mvs.l); 116 mv_list++; 117 } 118 } 119 120 /* Initialize default switching mode VEB */ 121 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 122 adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB; 123 124 /* If call to enable VFs succeeded then allocate memory 125 * for per VF control structures. 126 */ 127 adapter->vfinfo = 128 kcalloc(adapter->num_vfs, 129 sizeof(struct vf_data_storage), GFP_KERNEL); 130 if (adapter->vfinfo) { 131 /* Now that we're sure SR-IOV is enabled 132 * and memory allocated set up the mailbox parameters 133 */ 134 ixgbe_init_mbx_params_pf(hw); 135 memcpy(&hw->mbx.ops, ii->mbx_ops, sizeof(hw->mbx.ops)); 136 137 /* limit trafffic classes based on VFs enabled */ 138 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && 139 (adapter->num_vfs < 16)) { 140 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 141 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 142 } else if (adapter->num_vfs < 32) { 143 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 144 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 145 } else { 146 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 147 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 148 } 149 150 /* We do not support RSS w/ SR-IOV */ 151 adapter->ring_feature[RING_F_RSS].limit = 1; 152 153 /* Disable RSC when in SR-IOV mode */ 154 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 155 IXGBE_FLAG2_RSC_ENABLED); 156 157 /* enable spoof checking for all VFs */ 158 for (i = 0; i < adapter->num_vfs; i++) 159 adapter->vfinfo[i].spoofchk_enabled = true; 160 return; 161 } 162 163 /* Oh oh */ 164 e_err(probe, "Unable to allocate memory for VF Data Storage - " 165 "SRIOV disabled\n"); 166 ixgbe_disable_sriov(adapter); 167 } 168 169 static bool ixgbe_vfs_are_assigned(struct ixgbe_adapter *adapter) 170 { 171 struct pci_dev *pdev = adapter->pdev; 172 struct pci_dev *vfdev; 173 int dev_id; 174 175 switch (adapter->hw.mac.type) { 176 case ixgbe_mac_82599EB: 177 dev_id = IXGBE_DEV_ID_82599_VF; 178 break; 179 case ixgbe_mac_X540: 180 dev_id = IXGBE_DEV_ID_X540_VF; 181 break; 182 default: 183 return false; 184 } 185 186 /* loop through all the VFs to see if we own any that are assigned */ 187 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL); 188 while (vfdev) { 189 /* if we don't own it we don't care */ 190 if (vfdev->is_virtfn && vfdev->physfn == pdev) { 191 /* if it is assigned we cannot release it */ 192 if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) 193 return true; 194 } 195 196 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, vfdev); 197 } 198 199 return false; 200 } 201 202 #endif /* #ifdef CONFIG_PCI_IOV */ 203 void ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 204 { 205 struct ixgbe_hw *hw = &adapter->hw; 206 u32 gpie; 207 u32 vmdctl; 208 209 /* set num VFs to 0 to prevent access to vfinfo */ 210 adapter->num_vfs = 0; 211 212 /* free VF control structures */ 213 kfree(adapter->vfinfo); 214 adapter->vfinfo = NULL; 215 216 /* free macvlan list */ 217 kfree(adapter->mv_list); 218 adapter->mv_list = NULL; 219 220 /* if SR-IOV is already disabled then there is nothing to do */ 221 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 222 return; 223 224 #ifdef CONFIG_PCI_IOV 225 /* 226 * If our VFs are assigned we cannot shut down SR-IOV 227 * without causing issues, so just leave the hardware 228 * available but disabled 229 */ 230 if (ixgbe_vfs_are_assigned(adapter)) { 231 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 232 return; 233 } 234 /* disable iov and allow time for transactions to clear */ 235 pci_disable_sriov(adapter->pdev); 236 #endif 237 238 /* turn off device IOV mode */ 239 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0); 240 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 241 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 242 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 243 244 /* set default pool back to 0 */ 245 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 246 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 247 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 248 IXGBE_WRITE_FLUSH(hw); 249 250 /* Disable VMDq flag so device will be set in VM mode */ 251 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) 252 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 253 adapter->ring_feature[RING_F_VMDQ].offset = 0; 254 255 /* take a breather then clean up driver data */ 256 msleep(100); 257 258 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 259 } 260 261 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 262 u32 *msgbuf, u32 vf) 263 { 264 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 265 >> IXGBE_VT_MSGINFO_SHIFT; 266 u16 *hash_list = (u16 *)&msgbuf[1]; 267 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 268 struct ixgbe_hw *hw = &adapter->hw; 269 int i; 270 u32 vector_bit; 271 u32 vector_reg; 272 u32 mta_reg; 273 274 /* only so many hash values supported */ 275 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 276 277 /* 278 * salt away the number of multi cast addresses assigned 279 * to this VF for later use to restore when the PF multi cast 280 * list changes 281 */ 282 vfinfo->num_vf_mc_hashes = entries; 283 284 /* 285 * VFs are limited to using the MTA hash table for their multicast 286 * addresses 287 */ 288 for (i = 0; i < entries; i++) { 289 vfinfo->vf_mc_hashes[i] = hash_list[i]; 290 } 291 292 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 293 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 294 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 295 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 296 mta_reg |= (1 << vector_bit); 297 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 298 } 299 300 return 0; 301 } 302 303 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter) 304 { 305 struct ixgbe_hw *hw = &adapter->hw; 306 struct list_head *pos; 307 struct vf_macvlans *entry; 308 309 list_for_each(pos, &adapter->vf_mvs.l) { 310 entry = list_entry(pos, struct vf_macvlans, l); 311 if (!entry->free) 312 hw->mac.ops.set_rar(hw, entry->rar_entry, 313 entry->vf_macvlan, 314 entry->vf, IXGBE_RAH_AV); 315 } 316 } 317 318 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 319 { 320 struct ixgbe_hw *hw = &adapter->hw; 321 struct vf_data_storage *vfinfo; 322 int i, j; 323 u32 vector_bit; 324 u32 vector_reg; 325 u32 mta_reg; 326 327 for (i = 0; i < adapter->num_vfs; i++) { 328 vfinfo = &adapter->vfinfo[i]; 329 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 330 hw->addr_ctrl.mta_in_use++; 331 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 332 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 333 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 334 mta_reg |= (1 << vector_bit); 335 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 336 } 337 } 338 339 /* Restore any VF macvlans */ 340 ixgbe_restore_vf_macvlans(adapter); 341 } 342 343 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 344 u32 vf) 345 { 346 /* VLAN 0 is a special case, don't allow it to be removed */ 347 if (!vid && !add) 348 return 0; 349 350 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 351 } 352 353 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) 354 { 355 struct ixgbe_hw *hw = &adapter->hw; 356 int max_frame = msgbuf[1]; 357 u32 max_frs; 358 359 /* 360 * For 82599EB we have to keep all PFs and VFs operating with 361 * the same max_frame value in order to avoid sending an oversize 362 * frame to a VF. In order to guarantee this is handled correctly 363 * for all cases we have several special exceptions to take into 364 * account before we can enable the VF for receive 365 */ 366 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 367 struct net_device *dev = adapter->netdev; 368 int pf_max_frame = dev->mtu + ETH_HLEN; 369 u32 reg_offset, vf_shift, vfre; 370 s32 err = 0; 371 372 #ifdef CONFIG_FCOE 373 if (dev->features & NETIF_F_FCOE_MTU) 374 pf_max_frame = max_t(int, pf_max_frame, 375 IXGBE_FCOE_JUMBO_FRAME_SIZE); 376 377 #endif /* CONFIG_FCOE */ 378 switch (adapter->vfinfo[vf].vf_api) { 379 case ixgbe_mbox_api_11: 380 /* 381 * Version 1.1 supports jumbo frames on VFs if PF has 382 * jumbo frames enabled which means legacy VFs are 383 * disabled 384 */ 385 if (pf_max_frame > ETH_FRAME_LEN) 386 break; 387 default: 388 /* 389 * If the PF or VF are running w/ jumbo frames enabled 390 * we need to shut down the VF Rx path as we cannot 391 * support jumbo frames on legacy VFs 392 */ 393 if ((pf_max_frame > ETH_FRAME_LEN) || 394 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 395 err = -EINVAL; 396 break; 397 } 398 399 /* determine VF receive enable location */ 400 vf_shift = vf % 32; 401 reg_offset = vf / 32; 402 403 /* enable or disable receive depending on error */ 404 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 405 if (err) 406 vfre &= ~(1 << vf_shift); 407 else 408 vfre |= 1 << vf_shift; 409 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); 410 411 if (err) { 412 e_err(drv, "VF max_frame %d out of range\n", max_frame); 413 return err; 414 } 415 } 416 417 /* MTU < 68 is an error and causes problems on some kernels */ 418 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { 419 e_err(drv, "VF max_frame %d out of range\n", max_frame); 420 return -EINVAL; 421 } 422 423 /* pull current max frame size from hardware */ 424 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); 425 max_frs &= IXGBE_MHADD_MFS_MASK; 426 max_frs >>= IXGBE_MHADD_MFS_SHIFT; 427 428 if (max_frs < max_frame) { 429 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; 430 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 431 } 432 433 e_info(hw, "VF requests change max MTU to %d\n", max_frame); 434 435 return 0; 436 } 437 438 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 439 { 440 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 441 vmolr |= (IXGBE_VMOLR_ROMPE | 442 IXGBE_VMOLR_BAM); 443 if (aupe) 444 vmolr |= IXGBE_VMOLR_AUPE; 445 else 446 vmolr &= ~IXGBE_VMOLR_AUPE; 447 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 448 } 449 450 static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, 451 u16 vid, u16 qos, u32 vf) 452 { 453 struct ixgbe_hw *hw = &adapter->hw; 454 u32 vmvir = vid | (qos << VLAN_PRIO_SHIFT) | IXGBE_VMVIR_VLANA_DEFAULT; 455 456 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), vmvir); 457 } 458 459 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) 460 { 461 struct ixgbe_hw *hw = &adapter->hw; 462 463 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 464 } 465 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 466 { 467 struct ixgbe_hw *hw = &adapter->hw; 468 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 469 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 470 u8 num_tcs = netdev_get_num_tc(adapter->netdev); 471 472 /* add PF assigned VLAN or VLAN 0 */ 473 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); 474 475 /* reset offloads to defaults */ 476 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); 477 478 /* set outgoing tags for VFs */ 479 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { 480 ixgbe_clear_vmvir(adapter, vf); 481 } else { 482 if (vfinfo->pf_qos || !num_tcs) 483 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 484 vfinfo->pf_qos, vf); 485 else 486 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 487 adapter->default_up, vf); 488 489 if (vfinfo->spoofchk_enabled) 490 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 491 } 492 493 /* reset multicast table array for vf */ 494 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 495 496 /* Flush and reset the mta with the new values */ 497 ixgbe_set_rx_mode(adapter->netdev); 498 499 hw->mac.ops.clear_rar(hw, rar_entry); 500 501 /* reset VF api back to unknown */ 502 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; 503 } 504 505 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 506 int vf, unsigned char *mac_addr) 507 { 508 struct ixgbe_hw *hw = &adapter->hw; 509 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 510 511 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6); 512 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV); 513 514 return 0; 515 } 516 517 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 518 int vf, int index, unsigned char *mac_addr) 519 { 520 struct ixgbe_hw *hw = &adapter->hw; 521 struct list_head *pos; 522 struct vf_macvlans *entry; 523 524 if (index <= 1) { 525 list_for_each(pos, &adapter->vf_mvs.l) { 526 entry = list_entry(pos, struct vf_macvlans, l); 527 if (entry->vf == vf) { 528 entry->vf = -1; 529 entry->free = true; 530 entry->is_macvlan = false; 531 hw->mac.ops.clear_rar(hw, entry->rar_entry); 532 } 533 } 534 } 535 536 /* 537 * If index was zero then we were asked to clear the uc list 538 * for the VF. We're done. 539 */ 540 if (!index) 541 return 0; 542 543 entry = NULL; 544 545 list_for_each(pos, &adapter->vf_mvs.l) { 546 entry = list_entry(pos, struct vf_macvlans, l); 547 if (entry->free) 548 break; 549 } 550 551 /* 552 * If we traversed the entire list and didn't find a free entry 553 * then we're out of space on the RAR table. Also entry may 554 * be NULL because the original memory allocation for the list 555 * failed, which is not fatal but does mean we can't support 556 * VF requests for MACVLAN because we couldn't allocate 557 * memory for the list management required. 558 */ 559 if (!entry || !entry->free) 560 return -ENOSPC; 561 562 entry->free = false; 563 entry->is_macvlan = true; 564 entry->vf = vf; 565 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 566 567 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV); 568 569 return 0; 570 } 571 572 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 573 { 574 unsigned char vf_mac_addr[6]; 575 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 576 unsigned int vfn = (event_mask & 0x3f); 577 578 bool enable = ((event_mask & 0x10000000U) != 0); 579 580 if (enable) { 581 eth_random_addr(vf_mac_addr); 582 e_info(probe, "IOV: VF %d is enabled MAC %pM\n", 583 vfn, vf_mac_addr); 584 /* 585 * Store away the VF "permananet" MAC address, it will ask 586 * for it later. 587 */ 588 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6); 589 } 590 591 return 0; 592 } 593 594 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 595 { 596 struct ixgbe_hw *hw = &adapter->hw; 597 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 598 u32 reg, msgbuf[4]; 599 u32 reg_offset, vf_shift; 600 u8 *addr = (u8 *)(&msgbuf[1]); 601 602 e_info(probe, "VF Reset msg received from vf %d\n", vf); 603 604 /* reset the filters for the device */ 605 ixgbe_vf_reset_event(adapter, vf); 606 607 /* set vf mac address */ 608 ixgbe_set_vf_mac(adapter, vf, vf_mac); 609 610 vf_shift = vf % 32; 611 reg_offset = vf / 32; 612 613 /* enable transmit for vf */ 614 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 615 reg |= 1 << vf_shift; 616 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 617 618 /* enable receive for vf */ 619 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 620 reg |= 1 << vf_shift; 621 /* 622 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. 623 * For more info take a look at ixgbe_set_vf_lpe 624 */ 625 if (adapter->hw.mac.type == ixgbe_mac_82599EB) { 626 struct net_device *dev = adapter->netdev; 627 int pf_max_frame = dev->mtu + ETH_HLEN; 628 629 #ifdef CONFIG_FCOE 630 if (dev->features & NETIF_F_FCOE_MTU) 631 pf_max_frame = max_t(int, pf_max_frame, 632 IXGBE_FCOE_JUMBO_FRAME_SIZE); 633 634 #endif /* CONFIG_FCOE */ 635 if (pf_max_frame > ETH_FRAME_LEN) 636 reg &= ~(1 << vf_shift); 637 } 638 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 639 640 /* enable VF mailbox for further messages */ 641 adapter->vfinfo[vf].clear_to_send = true; 642 643 /* Enable counting of spoofed packets in the SSVPC register */ 644 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 645 reg |= (1 << vf_shift); 646 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 647 648 /* reply to reset with ack and vf mac address */ 649 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK; 650 memcpy(addr, vf_mac, ETH_ALEN); 651 652 /* 653 * Piggyback the multicast filter type so VF can compute the 654 * correct vectors 655 */ 656 msgbuf[3] = hw->mac.mc_filter_type; 657 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 658 659 return 0; 660 } 661 662 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, 663 u32 *msgbuf, u32 vf) 664 { 665 u8 *new_mac = ((u8 *)(&msgbuf[1])); 666 667 if (!is_valid_ether_addr(new_mac)) { 668 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 669 return -1; 670 } 671 672 if (adapter->vfinfo[vf].pf_set_mac && 673 memcmp(adapter->vfinfo[vf].vf_mac_addresses, new_mac, 674 ETH_ALEN)) { 675 e_warn(drv, 676 "VF %d attempted to override administratively set MAC address\n" 677 "Reload the VF driver to resume operations\n", 678 vf); 679 return -1; 680 } 681 682 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; 683 } 684 685 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, 686 u32 *msgbuf, u32 vf) 687 { 688 struct ixgbe_hw *hw = &adapter->hw; 689 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 690 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 691 int err; 692 u8 tcs = netdev_get_num_tc(adapter->netdev); 693 694 if (adapter->vfinfo[vf].pf_vlan || tcs) { 695 e_warn(drv, 696 "VF %d attempted to override administratively set VLAN configuration\n" 697 "Reload the VF driver to resume operations\n", 698 vf); 699 return -1; 700 } 701 702 if (add) 703 adapter->vfinfo[vf].vlan_count++; 704 else if (adapter->vfinfo[vf].vlan_count) 705 adapter->vfinfo[vf].vlan_count--; 706 707 err = ixgbe_set_vf_vlan(adapter, add, vid, vf); 708 if (!err && adapter->vfinfo[vf].spoofchk_enabled) 709 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 710 711 return err; 712 } 713 714 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, 715 u32 *msgbuf, u32 vf) 716 { 717 u8 *new_mac = ((u8 *)(&msgbuf[1])); 718 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 719 IXGBE_VT_MSGINFO_SHIFT; 720 int err; 721 722 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 723 e_warn(drv, 724 "VF %d requested MACVLAN filter but is administratively denied\n", 725 vf); 726 return -1; 727 } 728 729 /* An non-zero index indicates the VF is setting a filter */ 730 if (index) { 731 if (!is_valid_ether_addr(new_mac)) { 732 e_warn(drv, "VF %d attempted to set invalid mac\n", vf); 733 return -1; 734 } 735 736 /* 737 * If the VF is allowed to set MAC filters then turn off 738 * anti-spoofing to avoid false positives. 739 */ 740 if (adapter->vfinfo[vf].spoofchk_enabled) 741 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 742 } 743 744 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); 745 if (err == -ENOSPC) 746 e_warn(drv, 747 "VF %d has requested a MACVLAN filter but there is no space for it\n", 748 vf); 749 750 return err < 0; 751 } 752 753 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, 754 u32 *msgbuf, u32 vf) 755 { 756 int api = msgbuf[1]; 757 758 switch (api) { 759 case ixgbe_mbox_api_10: 760 case ixgbe_mbox_api_11: 761 adapter->vfinfo[vf].vf_api = api; 762 return 0; 763 default: 764 break; 765 } 766 767 e_info(drv, "VF %d requested invalid api version %u\n", vf, api); 768 769 return -1; 770 } 771 772 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, 773 u32 *msgbuf, u32 vf) 774 { 775 struct net_device *dev = adapter->netdev; 776 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 777 unsigned int default_tc = 0; 778 u8 num_tcs = netdev_get_num_tc(dev); 779 780 /* verify the PF is supporting the correct APIs */ 781 switch (adapter->vfinfo[vf].vf_api) { 782 case ixgbe_mbox_api_20: 783 case ixgbe_mbox_api_11: 784 break; 785 default: 786 return -1; 787 } 788 789 /* only allow 1 Tx queue for bandwidth limiting */ 790 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 791 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); 792 793 /* if TCs > 1 determine which TC belongs to default user priority */ 794 if (num_tcs > 1) 795 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); 796 797 /* notify VF of need for VLAN tag stripping, and correct queue */ 798 if (num_tcs) 799 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; 800 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) 801 msgbuf[IXGBE_VF_TRANS_VLAN] = 1; 802 else 803 msgbuf[IXGBE_VF_TRANS_VLAN] = 0; 804 805 /* notify VF of default queue */ 806 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; 807 808 return 0; 809 } 810 811 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 812 { 813 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 814 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 815 struct ixgbe_hw *hw = &adapter->hw; 816 s32 retval; 817 818 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 819 820 if (retval) { 821 pr_err("Error receiving message from VF\n"); 822 return retval; 823 } 824 825 /* this is a message we already processed, do nothing */ 826 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 827 return retval; 828 829 /* flush the ack before we write any messages back */ 830 IXGBE_WRITE_FLUSH(hw); 831 832 if (msgbuf[0] == IXGBE_VF_RESET) 833 return ixgbe_vf_reset_msg(adapter, vf); 834 835 /* 836 * until the vf completes a virtual function reset it should not be 837 * allowed to start any configuration. 838 */ 839 if (!adapter->vfinfo[vf].clear_to_send) { 840 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 841 ixgbe_write_mbx(hw, msgbuf, 1, vf); 842 return retval; 843 } 844 845 switch ((msgbuf[0] & 0xFFFF)) { 846 case IXGBE_VF_SET_MAC_ADDR: 847 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); 848 break; 849 case IXGBE_VF_SET_MULTICAST: 850 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); 851 break; 852 case IXGBE_VF_SET_VLAN: 853 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); 854 break; 855 case IXGBE_VF_SET_LPE: 856 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf); 857 break; 858 case IXGBE_VF_SET_MACVLAN: 859 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); 860 break; 861 case IXGBE_VF_API_NEGOTIATE: 862 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); 863 break; 864 case IXGBE_VF_GET_QUEUES: 865 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); 866 break; 867 default: 868 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 869 retval = IXGBE_ERR_MBX; 870 break; 871 } 872 873 /* notify the VF of the results of what it sent us */ 874 if (retval) 875 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 876 else 877 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 878 879 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 880 881 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); 882 883 return retval; 884 } 885 886 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 887 { 888 struct ixgbe_hw *hw = &adapter->hw; 889 u32 msg = IXGBE_VT_MSGTYPE_NACK; 890 891 /* if device isn't clear to send it shouldn't be reading either */ 892 if (!adapter->vfinfo[vf].clear_to_send) 893 ixgbe_write_mbx(hw, &msg, 1, vf); 894 } 895 896 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 897 { 898 struct ixgbe_hw *hw = &adapter->hw; 899 u32 vf; 900 901 for (vf = 0; vf < adapter->num_vfs; vf++) { 902 /* process any reset requests */ 903 if (!ixgbe_check_for_rst(hw, vf)) 904 ixgbe_vf_reset_event(adapter, vf); 905 906 /* process any messages pending */ 907 if (!ixgbe_check_for_msg(hw, vf)) 908 ixgbe_rcv_msg_from_vf(adapter, vf); 909 910 /* process any acks */ 911 if (!ixgbe_check_for_ack(hw, vf)) 912 ixgbe_rcv_ack_from_vf(adapter, vf); 913 } 914 } 915 916 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 917 { 918 struct ixgbe_hw *hw = &adapter->hw; 919 920 /* disable transmit and receive for all vfs */ 921 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 922 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 923 924 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 925 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 926 } 927 928 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 929 { 930 struct ixgbe_hw *hw = &adapter->hw; 931 u32 ping; 932 int i; 933 934 for (i = 0 ; i < adapter->num_vfs; i++) { 935 ping = IXGBE_PF_CONTROL_MSG; 936 if (adapter->vfinfo[i].clear_to_send) 937 ping |= IXGBE_VT_MSGTYPE_CTS; 938 ixgbe_write_mbx(hw, &ping, 1, i); 939 } 940 } 941 942 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 943 { 944 struct ixgbe_adapter *adapter = netdev_priv(netdev); 945 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 946 return -EINVAL; 947 adapter->vfinfo[vf].pf_set_mac = true; 948 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 949 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 950 " change effective."); 951 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 952 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 953 " but the PF device is not up.\n"); 954 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 955 " attempting to use the VF device.\n"); 956 } 957 return ixgbe_set_vf_mac(adapter, vf, mac); 958 } 959 960 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 961 { 962 int err = 0; 963 struct ixgbe_adapter *adapter = netdev_priv(netdev); 964 struct ixgbe_hw *hw = &adapter->hw; 965 966 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 967 return -EINVAL; 968 if (vlan || qos) { 969 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 970 if (err) 971 goto out; 972 ixgbe_set_vmvir(adapter, vlan, qos, vf); 973 ixgbe_set_vmolr(hw, vf, false); 974 if (adapter->vfinfo[vf].spoofchk_enabled) 975 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 976 adapter->vfinfo[vf].vlan_count++; 977 adapter->vfinfo[vf].pf_vlan = vlan; 978 adapter->vfinfo[vf].pf_qos = qos; 979 dev_info(&adapter->pdev->dev, 980 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 981 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 982 dev_warn(&adapter->pdev->dev, 983 "The VF VLAN has been set," 984 " but the PF device is not up.\n"); 985 dev_warn(&adapter->pdev->dev, 986 "Bring the PF device up before" 987 " attempting to use the VF device.\n"); 988 } 989 } else { 990 err = ixgbe_set_vf_vlan(adapter, false, 991 adapter->vfinfo[vf].pf_vlan, vf); 992 ixgbe_clear_vmvir(adapter, vf); 993 ixgbe_set_vmolr(hw, vf, true); 994 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 995 if (adapter->vfinfo[vf].vlan_count) 996 adapter->vfinfo[vf].vlan_count--; 997 adapter->vfinfo[vf].pf_vlan = 0; 998 adapter->vfinfo[vf].pf_qos = 0; 999 } 1000 out: 1001 return err; 1002 } 1003 1004 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter) 1005 { 1006 switch (adapter->link_speed) { 1007 case IXGBE_LINK_SPEED_100_FULL: 1008 return 100; 1009 case IXGBE_LINK_SPEED_1GB_FULL: 1010 return 1000; 1011 case IXGBE_LINK_SPEED_10GB_FULL: 1012 return 10000; 1013 default: 1014 return 0; 1015 } 1016 } 1017 1018 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) 1019 { 1020 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 1021 struct ixgbe_hw *hw = &adapter->hw; 1022 u32 bcnrc_val = 0; 1023 u16 queue, queues_per_pool; 1024 u16 tx_rate = adapter->vfinfo[vf].tx_rate; 1025 1026 if (tx_rate) { 1027 /* start with base link speed value */ 1028 bcnrc_val = adapter->vf_rate_link_speed; 1029 1030 /* Calculate the rate factor values to set */ 1031 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1032 bcnrc_val /= tx_rate; 1033 1034 /* clear everything but the rate factor */ 1035 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1036 IXGBE_RTTBCNRC_RF_DEC_MASK; 1037 1038 /* enable the rate scheduler */ 1039 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1040 } 1041 1042 /* 1043 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 1044 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 1045 * and 0x004 otherwise. 1046 */ 1047 switch (hw->mac.type) { 1048 case ixgbe_mac_82599EB: 1049 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 1050 break; 1051 case ixgbe_mac_X540: 1052 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 1053 break; 1054 default: 1055 break; 1056 } 1057 1058 /* determine how many queues per pool based on VMDq mask */ 1059 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 1060 1061 /* write value for all Tx queues belonging to VF */ 1062 for (queue = 0; queue < queues_per_pool; queue++) { 1063 unsigned int reg_idx = (vf * queues_per_pool) + queue; 1064 1065 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); 1066 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1067 } 1068 } 1069 1070 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 1071 { 1072 int i; 1073 1074 /* VF Tx rate limit was not set */ 1075 if (!adapter->vf_rate_link_speed) 1076 return; 1077 1078 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { 1079 adapter->vf_rate_link_speed = 0; 1080 dev_info(&adapter->pdev->dev, 1081 "Link speed has been changed. VF Transmit rate is disabled\n"); 1082 } 1083 1084 for (i = 0; i < adapter->num_vfs; i++) { 1085 if (!adapter->vf_rate_link_speed) 1086 adapter->vfinfo[i].tx_rate = 0; 1087 1088 ixgbe_set_vf_rate_limit(adapter, i); 1089 } 1090 } 1091 1092 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) 1093 { 1094 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1095 int link_speed; 1096 1097 /* verify VF is active */ 1098 if (vf >= adapter->num_vfs) 1099 return -EINVAL; 1100 1101 /* verify link is up */ 1102 if (!adapter->link_up) 1103 return -EINVAL; 1104 1105 /* verify we are linked at 10Gbps */ 1106 link_speed = ixgbe_link_mbps(adapter); 1107 if (link_speed != 10000) 1108 return -EINVAL; 1109 1110 /* rate limit cannot be less than 10Mbs or greater than link speed */ 1111 if (tx_rate && ((tx_rate <= 10) || (tx_rate > link_speed))) 1112 return -EINVAL; 1113 1114 /* store values */ 1115 adapter->vf_rate_link_speed = link_speed; 1116 adapter->vfinfo[vf].tx_rate = tx_rate; 1117 1118 /* update hardware configuration */ 1119 ixgbe_set_vf_rate_limit(adapter, vf); 1120 1121 return 0; 1122 } 1123 1124 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 1125 { 1126 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1127 int vf_target_reg = vf >> 3; 1128 int vf_target_shift = vf % 8; 1129 struct ixgbe_hw *hw = &adapter->hw; 1130 u32 regval; 1131 1132 adapter->vfinfo[vf].spoofchk_enabled = setting; 1133 1134 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1135 regval &= ~(1 << vf_target_shift); 1136 regval |= (setting << vf_target_shift); 1137 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1138 1139 if (adapter->vfinfo[vf].vlan_count) { 1140 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT; 1141 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 1142 regval &= ~(1 << vf_target_shift); 1143 regval |= (setting << vf_target_shift); 1144 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 1145 } 1146 1147 return 0; 1148 } 1149 1150 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 1151 int vf, struct ifla_vf_info *ivi) 1152 { 1153 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1154 if (vf >= adapter->num_vfs) 1155 return -EINVAL; 1156 ivi->vf = vf; 1157 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 1158 ivi->tx_rate = adapter->vfinfo[vf].tx_rate; 1159 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 1160 ivi->qos = adapter->vfinfo[vf].pf_qos; 1161 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 1162 return 0; 1163 } 1164