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 /* If call to enable VFs succeeded then allocate memory 121 * for per VF control structures. 122 */ 123 adapter->vfinfo = 124 kcalloc(adapter->num_vfs, 125 sizeof(struct vf_data_storage), GFP_KERNEL); 126 if (adapter->vfinfo) { 127 /* Now that we're sure SR-IOV is enabled 128 * and memory allocated set up the mailbox parameters 129 */ 130 ixgbe_init_mbx_params_pf(hw); 131 memcpy(&hw->mbx.ops, ii->mbx_ops, sizeof(hw->mbx.ops)); 132 133 /* limit trafffic classes based on VFs enabled */ 134 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && 135 (adapter->num_vfs < 16)) { 136 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 137 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 138 } else if (adapter->num_vfs < 32) { 139 adapter->dcb_cfg.num_tcs.pg_tcs = 4; 140 adapter->dcb_cfg.num_tcs.pfc_tcs = 4; 141 } else { 142 adapter->dcb_cfg.num_tcs.pg_tcs = 1; 143 adapter->dcb_cfg.num_tcs.pfc_tcs = 1; 144 } 145 146 /* We do not support RSS w/ SR-IOV */ 147 adapter->ring_feature[RING_F_RSS].limit = 1; 148 149 /* Disable RSC when in SR-IOV mode */ 150 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 151 IXGBE_FLAG2_RSC_ENABLED); 152 153 #ifdef IXGBE_FCOE 154 /* 155 * When SR-IOV is enabled 82599 cannot support jumbo frames 156 * so we must disable FCoE because we cannot support FCoE MTU. 157 */ 158 if (adapter->hw.mac.type == ixgbe_mac_82599EB) 159 adapter->flags &= ~(IXGBE_FLAG_FCOE_ENABLED | 160 IXGBE_FLAG_FCOE_CAPABLE); 161 #endif 162 163 /* enable spoof checking for all VFs */ 164 for (i = 0; i < adapter->num_vfs; i++) 165 adapter->vfinfo[i].spoofchk_enabled = true; 166 return; 167 } 168 169 /* Oh oh */ 170 e_err(probe, "Unable to allocate memory for VF Data Storage - " 171 "SRIOV disabled\n"); 172 ixgbe_disable_sriov(adapter); 173 } 174 175 static bool ixgbe_vfs_are_assigned(struct ixgbe_adapter *adapter) 176 { 177 struct pci_dev *pdev = adapter->pdev; 178 struct pci_dev *vfdev; 179 int dev_id; 180 181 switch (adapter->hw.mac.type) { 182 case ixgbe_mac_82599EB: 183 dev_id = IXGBE_DEV_ID_82599_VF; 184 break; 185 case ixgbe_mac_X540: 186 dev_id = IXGBE_DEV_ID_X540_VF; 187 break; 188 default: 189 return false; 190 } 191 192 /* loop through all the VFs to see if we own any that are assigned */ 193 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL); 194 while (vfdev) { 195 /* if we don't own it we don't care */ 196 if (vfdev->is_virtfn && vfdev->physfn == pdev) { 197 /* if it is assigned we cannot release it */ 198 if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) 199 return true; 200 } 201 202 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, vfdev); 203 } 204 205 return false; 206 } 207 208 #endif /* #ifdef CONFIG_PCI_IOV */ 209 void ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 210 { 211 struct ixgbe_hw *hw = &adapter->hw; 212 u32 gpie; 213 u32 vmdctl; 214 215 /* set num VFs to 0 to prevent access to vfinfo */ 216 adapter->num_vfs = 0; 217 218 /* free VF control structures */ 219 kfree(adapter->vfinfo); 220 adapter->vfinfo = NULL; 221 222 /* free macvlan list */ 223 kfree(adapter->mv_list); 224 adapter->mv_list = NULL; 225 226 /* if SR-IOV is already disabled then there is nothing to do */ 227 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 228 return; 229 230 #ifdef CONFIG_PCI_IOV 231 /* 232 * If our VFs are assigned we cannot shut down SR-IOV 233 * without causing issues, so just leave the hardware 234 * available but disabled 235 */ 236 if (ixgbe_vfs_are_assigned(adapter)) { 237 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); 238 return; 239 } 240 /* disable iov and allow time for transactions to clear */ 241 pci_disable_sriov(adapter->pdev); 242 #endif 243 244 /* turn off device IOV mode */ 245 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0); 246 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 247 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 248 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 249 250 /* set default pool back to 0 */ 251 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 252 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 253 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 254 IXGBE_WRITE_FLUSH(hw); 255 256 /* Disable VMDq flag so device will be set in VM mode */ 257 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) 258 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; 259 adapter->ring_feature[RING_F_VMDQ].offset = 0; 260 261 /* take a breather then clean up driver data */ 262 msleep(100); 263 264 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 265 } 266 267 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 268 int entries, u16 *hash_list, u32 vf) 269 { 270 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 271 struct ixgbe_hw *hw = &adapter->hw; 272 int i; 273 u32 vector_bit; 274 u32 vector_reg; 275 u32 mta_reg; 276 277 /* only so many hash values supported */ 278 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 279 280 /* 281 * salt away the number of multi cast addresses assigned 282 * to this VF for later use to restore when the PF multi cast 283 * list changes 284 */ 285 vfinfo->num_vf_mc_hashes = entries; 286 287 /* 288 * VFs are limited to using the MTA hash table for their multicast 289 * addresses 290 */ 291 for (i = 0; i < entries; i++) { 292 vfinfo->vf_mc_hashes[i] = hash_list[i]; 293 } 294 295 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 296 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 297 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 298 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 299 mta_reg |= (1 << vector_bit); 300 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 301 } 302 303 return 0; 304 } 305 306 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter) 307 { 308 struct ixgbe_hw *hw = &adapter->hw; 309 struct list_head *pos; 310 struct vf_macvlans *entry; 311 312 list_for_each(pos, &adapter->vf_mvs.l) { 313 entry = list_entry(pos, struct vf_macvlans, l); 314 if (!entry->free) 315 hw->mac.ops.set_rar(hw, entry->rar_entry, 316 entry->vf_macvlan, 317 entry->vf, IXGBE_RAH_AV); 318 } 319 } 320 321 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 322 { 323 struct ixgbe_hw *hw = &adapter->hw; 324 struct vf_data_storage *vfinfo; 325 int i, j; 326 u32 vector_bit; 327 u32 vector_reg; 328 u32 mta_reg; 329 330 for (i = 0; i < adapter->num_vfs; i++) { 331 vfinfo = &adapter->vfinfo[i]; 332 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 333 hw->addr_ctrl.mta_in_use++; 334 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 335 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 336 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 337 mta_reg |= (1 << vector_bit); 338 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 339 } 340 } 341 342 /* Restore any VF macvlans */ 343 ixgbe_restore_vf_macvlans(adapter); 344 } 345 346 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 347 u32 vf) 348 { 349 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 350 } 351 352 static void ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf) 353 { 354 struct ixgbe_hw *hw = &adapter->hw; 355 int new_mtu = msgbuf[1]; 356 u32 max_frs; 357 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; 358 359 /* Only X540 supports jumbo frames in IOV mode */ 360 if (adapter->hw.mac.type != ixgbe_mac_X540) 361 return; 362 363 /* MTU < 68 is an error and causes problems on some kernels */ 364 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) { 365 e_err(drv, "VF mtu %d out of range\n", new_mtu); 366 return; 367 } 368 369 max_frs = (IXGBE_READ_REG(hw, IXGBE_MAXFRS) & 370 IXGBE_MHADD_MFS_MASK) >> IXGBE_MHADD_MFS_SHIFT; 371 if (max_frs < new_mtu) { 372 max_frs = new_mtu << IXGBE_MHADD_MFS_SHIFT; 373 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 374 } 375 376 e_info(hw, "VF requests change max MTU to %d\n", new_mtu); 377 } 378 379 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 380 { 381 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 382 vmolr |= (IXGBE_VMOLR_ROMPE | 383 IXGBE_VMOLR_BAM); 384 if (aupe) 385 vmolr |= IXGBE_VMOLR_AUPE; 386 else 387 vmolr &= ~IXGBE_VMOLR_AUPE; 388 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 389 } 390 391 static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, u32 vid, u32 vf) 392 { 393 struct ixgbe_hw *hw = &adapter->hw; 394 395 if (vid) 396 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 397 (vid | IXGBE_VMVIR_VLANA_DEFAULT)); 398 else 399 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 400 } 401 402 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 403 { 404 struct ixgbe_hw *hw = &adapter->hw; 405 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 406 407 /* reset offloads to defaults */ 408 if (adapter->vfinfo[vf].pf_vlan) { 409 ixgbe_set_vf_vlan(adapter, true, 410 adapter->vfinfo[vf].pf_vlan, vf); 411 ixgbe_set_vmvir(adapter, 412 (adapter->vfinfo[vf].pf_vlan | 413 (adapter->vfinfo[vf].pf_qos << 414 VLAN_PRIO_SHIFT)), vf); 415 ixgbe_set_vmolr(hw, vf, false); 416 } else { 417 ixgbe_set_vmvir(adapter, 0, vf); 418 ixgbe_set_vmolr(hw, vf, true); 419 } 420 421 /* reset multicast table array for vf */ 422 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 423 424 /* Flush and reset the mta with the new values */ 425 ixgbe_set_rx_mode(adapter->netdev); 426 427 hw->mac.ops.clear_rar(hw, rar_entry); 428 } 429 430 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 431 int vf, unsigned char *mac_addr) 432 { 433 struct ixgbe_hw *hw = &adapter->hw; 434 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 435 436 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6); 437 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV); 438 439 return 0; 440 } 441 442 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 443 int vf, int index, unsigned char *mac_addr) 444 { 445 struct ixgbe_hw *hw = &adapter->hw; 446 struct list_head *pos; 447 struct vf_macvlans *entry; 448 449 if (index <= 1) { 450 list_for_each(pos, &adapter->vf_mvs.l) { 451 entry = list_entry(pos, struct vf_macvlans, l); 452 if (entry->vf == vf) { 453 entry->vf = -1; 454 entry->free = true; 455 entry->is_macvlan = false; 456 hw->mac.ops.clear_rar(hw, entry->rar_entry); 457 } 458 } 459 } 460 461 /* 462 * If index was zero then we were asked to clear the uc list 463 * for the VF. We're done. 464 */ 465 if (!index) 466 return 0; 467 468 entry = NULL; 469 470 list_for_each(pos, &adapter->vf_mvs.l) { 471 entry = list_entry(pos, struct vf_macvlans, l); 472 if (entry->free) 473 break; 474 } 475 476 /* 477 * If we traversed the entire list and didn't find a free entry 478 * then we're out of space on the RAR table. Also entry may 479 * be NULL because the original memory allocation for the list 480 * failed, which is not fatal but does mean we can't support 481 * VF requests for MACVLAN because we couldn't allocate 482 * memory for the list management required. 483 */ 484 if (!entry || !entry->free) 485 return -ENOSPC; 486 487 entry->free = false; 488 entry->is_macvlan = true; 489 entry->vf = vf; 490 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 491 492 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV); 493 494 return 0; 495 } 496 497 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 498 { 499 unsigned char vf_mac_addr[6]; 500 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 501 unsigned int vfn = (event_mask & 0x3f); 502 503 bool enable = ((event_mask & 0x10000000U) != 0); 504 505 if (enable) { 506 eth_random_addr(vf_mac_addr); 507 e_info(probe, "IOV: VF %d is enabled MAC %pM\n", 508 vfn, vf_mac_addr); 509 /* 510 * Store away the VF "permananet" MAC address, it will ask 511 * for it later. 512 */ 513 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6); 514 } 515 516 return 0; 517 } 518 519 static inline void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 520 { 521 struct ixgbe_hw *hw = &adapter->hw; 522 u32 reg; 523 u32 reg_offset, vf_shift; 524 525 vf_shift = vf % 32; 526 reg_offset = vf / 32; 527 528 /* enable transmit and receive for vf */ 529 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 530 reg |= (reg | (1 << vf_shift)); 531 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 532 533 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 534 reg |= (reg | (1 << vf_shift)); 535 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 536 537 /* Enable counting of spoofed packets in the SSVPC register */ 538 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 539 reg |= (1 << vf_shift); 540 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 541 542 ixgbe_vf_reset_event(adapter, vf); 543 } 544 545 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 546 { 547 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 548 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 549 struct ixgbe_hw *hw = &adapter->hw; 550 s32 retval; 551 int entries; 552 u16 *hash_list; 553 int add, vid, index; 554 u8 *new_mac; 555 556 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 557 558 if (retval) { 559 pr_err("Error receiving message from VF\n"); 560 return retval; 561 } 562 563 /* this is a message we already processed, do nothing */ 564 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 565 return retval; 566 567 /* flush the ack before we write any messages back */ 568 IXGBE_WRITE_FLUSH(hw); 569 570 /* 571 * until the vf completes a virtual function reset it should not be 572 * allowed to start any configuration. 573 */ 574 575 if (msgbuf[0] == IXGBE_VF_RESET) { 576 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 577 new_mac = (u8 *)(&msgbuf[1]); 578 e_info(probe, "VF Reset msg received from vf %d\n", vf); 579 adapter->vfinfo[vf].clear_to_send = false; 580 ixgbe_vf_reset_msg(adapter, vf); 581 adapter->vfinfo[vf].clear_to_send = true; 582 583 if (is_valid_ether_addr(new_mac) && 584 !adapter->vfinfo[vf].pf_set_mac) 585 ixgbe_set_vf_mac(adapter, vf, vf_mac); 586 else 587 ixgbe_set_vf_mac(adapter, 588 vf, adapter->vfinfo[vf].vf_mac_addresses); 589 590 /* reply to reset with ack and vf mac address */ 591 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK; 592 memcpy(new_mac, vf_mac, ETH_ALEN); 593 /* 594 * Piggyback the multicast filter type so VF can compute the 595 * correct vectors 596 */ 597 msgbuf[3] = hw->mac.mc_filter_type; 598 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 599 600 return retval; 601 } 602 603 if (!adapter->vfinfo[vf].clear_to_send) { 604 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 605 ixgbe_write_mbx(hw, msgbuf, 1, vf); 606 return retval; 607 } 608 609 switch ((msgbuf[0] & 0xFFFF)) { 610 case IXGBE_VF_SET_MAC_ADDR: 611 new_mac = ((u8 *)(&msgbuf[1])); 612 if (is_valid_ether_addr(new_mac) && 613 !adapter->vfinfo[vf].pf_set_mac) { 614 ixgbe_set_vf_mac(adapter, vf, new_mac); 615 } else if (memcmp(adapter->vfinfo[vf].vf_mac_addresses, 616 new_mac, ETH_ALEN)) { 617 e_warn(drv, "VF %d attempted to override " 618 "administratively set MAC address\nReload " 619 "the VF driver to resume operations\n", vf); 620 retval = -1; 621 } 622 break; 623 case IXGBE_VF_SET_MULTICAST: 624 entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 625 >> IXGBE_VT_MSGINFO_SHIFT; 626 hash_list = (u16 *)&msgbuf[1]; 627 retval = ixgbe_set_vf_multicasts(adapter, entries, 628 hash_list, vf); 629 break; 630 case IXGBE_VF_SET_LPE: 631 ixgbe_set_vf_lpe(adapter, msgbuf); 632 break; 633 case IXGBE_VF_SET_VLAN: 634 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 635 >> IXGBE_VT_MSGINFO_SHIFT; 636 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 637 if (adapter->vfinfo[vf].pf_vlan) { 638 e_warn(drv, "VF %d attempted to override " 639 "administratively set VLAN configuration\n" 640 "Reload the VF driver to resume operations\n", 641 vf); 642 retval = -1; 643 } else { 644 if (add) 645 adapter->vfinfo[vf].vlan_count++; 646 else if (adapter->vfinfo[vf].vlan_count) 647 adapter->vfinfo[vf].vlan_count--; 648 retval = ixgbe_set_vf_vlan(adapter, add, vid, vf); 649 if (!retval && adapter->vfinfo[vf].spoofchk_enabled) 650 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 651 } 652 break; 653 case IXGBE_VF_SET_MACVLAN: 654 index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 655 IXGBE_VT_MSGINFO_SHIFT; 656 if (adapter->vfinfo[vf].pf_set_mac && index > 0) { 657 e_warn(drv, "VF %d requested MACVLAN filter but is " 658 "administratively denied\n", vf); 659 retval = -1; 660 break; 661 } 662 /* 663 * If the VF is allowed to set MAC filters then turn off 664 * anti-spoofing to avoid false positives. An index 665 * greater than 0 will indicate the VF is setting a 666 * macvlan MAC filter. 667 */ 668 if (index > 0 && adapter->vfinfo[vf].spoofchk_enabled) 669 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 670 retval = ixgbe_set_vf_macvlan(adapter, vf, index, 671 (unsigned char *)(&msgbuf[1])); 672 if (retval == -ENOSPC) 673 e_warn(drv, "VF %d has requested a MACVLAN filter " 674 "but there is no space for it\n", vf); 675 break; 676 default: 677 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 678 retval = IXGBE_ERR_MBX; 679 break; 680 } 681 682 /* notify the VF of the results of what it sent us */ 683 if (retval) 684 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 685 else 686 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 687 688 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 689 690 ixgbe_write_mbx(hw, msgbuf, 1, vf); 691 692 return retval; 693 } 694 695 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 696 { 697 struct ixgbe_hw *hw = &adapter->hw; 698 u32 msg = IXGBE_VT_MSGTYPE_NACK; 699 700 /* if device isn't clear to send it shouldn't be reading either */ 701 if (!adapter->vfinfo[vf].clear_to_send) 702 ixgbe_write_mbx(hw, &msg, 1, vf); 703 } 704 705 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 706 { 707 struct ixgbe_hw *hw = &adapter->hw; 708 u32 vf; 709 710 for (vf = 0; vf < adapter->num_vfs; vf++) { 711 /* process any reset requests */ 712 if (!ixgbe_check_for_rst(hw, vf)) 713 ixgbe_vf_reset_event(adapter, vf); 714 715 /* process any messages pending */ 716 if (!ixgbe_check_for_msg(hw, vf)) 717 ixgbe_rcv_msg_from_vf(adapter, vf); 718 719 /* process any acks */ 720 if (!ixgbe_check_for_ack(hw, vf)) 721 ixgbe_rcv_ack_from_vf(adapter, vf); 722 } 723 } 724 725 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 726 { 727 struct ixgbe_hw *hw = &adapter->hw; 728 729 /* disable transmit and receive for all vfs */ 730 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 731 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 732 733 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 734 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 735 } 736 737 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 738 { 739 struct ixgbe_hw *hw = &adapter->hw; 740 u32 ping; 741 int i; 742 743 for (i = 0 ; i < adapter->num_vfs; i++) { 744 ping = IXGBE_PF_CONTROL_MSG; 745 if (adapter->vfinfo[i].clear_to_send) 746 ping |= IXGBE_VT_MSGTYPE_CTS; 747 ixgbe_write_mbx(hw, &ping, 1, i); 748 } 749 } 750 751 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 752 { 753 struct ixgbe_adapter *adapter = netdev_priv(netdev); 754 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 755 return -EINVAL; 756 adapter->vfinfo[vf].pf_set_mac = true; 757 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 758 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 759 " change effective."); 760 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 761 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 762 " but the PF device is not up.\n"); 763 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 764 " attempting to use the VF device.\n"); 765 } 766 return ixgbe_set_vf_mac(adapter, vf, mac); 767 } 768 769 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 770 { 771 int err = 0; 772 struct ixgbe_adapter *adapter = netdev_priv(netdev); 773 struct ixgbe_hw *hw = &adapter->hw; 774 775 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 776 return -EINVAL; 777 if (vlan || qos) { 778 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 779 if (err) 780 goto out; 781 ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); 782 ixgbe_set_vmolr(hw, vf, false); 783 if (adapter->vfinfo[vf].spoofchk_enabled) 784 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 785 adapter->vfinfo[vf].vlan_count++; 786 adapter->vfinfo[vf].pf_vlan = vlan; 787 adapter->vfinfo[vf].pf_qos = qos; 788 dev_info(&adapter->pdev->dev, 789 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 790 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 791 dev_warn(&adapter->pdev->dev, 792 "The VF VLAN has been set," 793 " but the PF device is not up.\n"); 794 dev_warn(&adapter->pdev->dev, 795 "Bring the PF device up before" 796 " attempting to use the VF device.\n"); 797 } 798 } else { 799 err = ixgbe_set_vf_vlan(adapter, false, 800 adapter->vfinfo[vf].pf_vlan, vf); 801 ixgbe_set_vmvir(adapter, vlan, vf); 802 ixgbe_set_vmolr(hw, vf, true); 803 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 804 if (adapter->vfinfo[vf].vlan_count) 805 adapter->vfinfo[vf].vlan_count--; 806 adapter->vfinfo[vf].pf_vlan = 0; 807 adapter->vfinfo[vf].pf_qos = 0; 808 } 809 out: 810 return err; 811 } 812 813 static int ixgbe_link_mbps(int internal_link_speed) 814 { 815 switch (internal_link_speed) { 816 case IXGBE_LINK_SPEED_100_FULL: 817 return 100; 818 case IXGBE_LINK_SPEED_1GB_FULL: 819 return 1000; 820 case IXGBE_LINK_SPEED_10GB_FULL: 821 return 10000; 822 default: 823 return 0; 824 } 825 } 826 827 static void ixgbe_set_vf_rate_limit(struct ixgbe_hw *hw, int vf, int tx_rate, 828 int link_speed) 829 { 830 int rf_dec, rf_int; 831 u32 bcnrc_val; 832 833 if (tx_rate != 0) { 834 /* Calculate the rate factor values to set */ 835 rf_int = link_speed / tx_rate; 836 rf_dec = (link_speed - (rf_int * tx_rate)); 837 rf_dec = (rf_dec * (1<<IXGBE_RTTBCNRC_RF_INT_SHIFT)) / tx_rate; 838 839 bcnrc_val = IXGBE_RTTBCNRC_RS_ENA; 840 bcnrc_val |= ((rf_int<<IXGBE_RTTBCNRC_RF_INT_SHIFT) & 841 IXGBE_RTTBCNRC_RF_INT_MASK); 842 bcnrc_val |= (rf_dec & IXGBE_RTTBCNRC_RF_DEC_MASK); 843 } else { 844 bcnrc_val = 0; 845 } 846 847 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, 2*vf); /* vf Y uses queue 2*Y */ 848 /* 849 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 850 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 851 * and 0x004 otherwise. 852 */ 853 switch (hw->mac.type) { 854 case ixgbe_mac_82599EB: 855 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 856 break; 857 case ixgbe_mac_X540: 858 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 859 break; 860 default: 861 break; 862 } 863 864 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 865 } 866 867 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 868 { 869 int actual_link_speed, i; 870 bool reset_rate = false; 871 872 /* VF Tx rate limit was not set */ 873 if (adapter->vf_rate_link_speed == 0) 874 return; 875 876 actual_link_speed = ixgbe_link_mbps(adapter->link_speed); 877 if (actual_link_speed != adapter->vf_rate_link_speed) { 878 reset_rate = true; 879 adapter->vf_rate_link_speed = 0; 880 dev_info(&adapter->pdev->dev, 881 "Link speed has been changed. VF Transmit rate " 882 "is disabled\n"); 883 } 884 885 for (i = 0; i < adapter->num_vfs; i++) { 886 if (reset_rate) 887 adapter->vfinfo[i].tx_rate = 0; 888 889 ixgbe_set_vf_rate_limit(&adapter->hw, i, 890 adapter->vfinfo[i].tx_rate, 891 actual_link_speed); 892 } 893 } 894 895 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) 896 { 897 struct ixgbe_adapter *adapter = netdev_priv(netdev); 898 struct ixgbe_hw *hw = &adapter->hw; 899 int actual_link_speed; 900 901 actual_link_speed = ixgbe_link_mbps(adapter->link_speed); 902 if ((vf >= adapter->num_vfs) || (!adapter->link_up) || 903 (tx_rate > actual_link_speed) || (actual_link_speed != 10000) || 904 ((tx_rate != 0) && (tx_rate <= 10))) 905 /* rate limit cannot be set to 10Mb or less in 10Gb adapters */ 906 return -EINVAL; 907 908 adapter->vf_rate_link_speed = actual_link_speed; 909 adapter->vfinfo[vf].tx_rate = (u16)tx_rate; 910 ixgbe_set_vf_rate_limit(hw, vf, tx_rate, actual_link_speed); 911 912 return 0; 913 } 914 915 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 916 { 917 struct ixgbe_adapter *adapter = netdev_priv(netdev); 918 int vf_target_reg = vf >> 3; 919 int vf_target_shift = vf % 8; 920 struct ixgbe_hw *hw = &adapter->hw; 921 u32 regval; 922 923 adapter->vfinfo[vf].spoofchk_enabled = setting; 924 925 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 926 regval &= ~(1 << vf_target_shift); 927 regval |= (setting << vf_target_shift); 928 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 929 930 if (adapter->vfinfo[vf].vlan_count) { 931 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT; 932 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 933 regval &= ~(1 << vf_target_shift); 934 regval |= (setting << vf_target_shift); 935 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 936 } 937 938 return 0; 939 } 940 941 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 942 int vf, struct ifla_vf_info *ivi) 943 { 944 struct ixgbe_adapter *adapter = netdev_priv(netdev); 945 if (vf >= adapter->num_vfs) 946 return -EINVAL; 947 ivi->vf = vf; 948 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 949 ivi->tx_rate = adapter->vfinfo[vf].tx_rate; 950 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 951 ivi->qos = adapter->vfinfo[vf].pf_qos; 952 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 953 return 0; 954 } 955