1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2011 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 static int ixgbe_find_enabled_vfs(struct ixgbe_adapter *adapter) 48 { 49 struct pci_dev *pdev = adapter->pdev; 50 struct pci_dev *pvfdev; 51 u16 vf_devfn = 0; 52 int device_id; 53 int vfs_found = 0; 54 55 switch (adapter->hw.mac.type) { 56 case ixgbe_mac_82599EB: 57 device_id = IXGBE_DEV_ID_82599_VF; 58 break; 59 case ixgbe_mac_X540: 60 device_id = IXGBE_DEV_ID_X540_VF; 61 break; 62 default: 63 device_id = 0; 64 break; 65 } 66 67 vf_devfn = pdev->devfn + 0x80; 68 pvfdev = pci_get_device(IXGBE_INTEL_VENDOR_ID, device_id, NULL); 69 while (pvfdev) { 70 if (pvfdev->devfn == vf_devfn) 71 vfs_found++; 72 vf_devfn += 2; 73 pvfdev = pci_get_device(IXGBE_INTEL_VENDOR_ID, 74 device_id, pvfdev); 75 } 76 77 return vfs_found; 78 } 79 80 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, 81 const struct ixgbe_info *ii) 82 { 83 struct ixgbe_hw *hw = &adapter->hw; 84 int err = 0; 85 int num_vf_macvlans, i; 86 struct vf_macvlans *mv_list; 87 int pre_existing_vfs = 0; 88 89 pre_existing_vfs = ixgbe_find_enabled_vfs(adapter); 90 if (!pre_existing_vfs && !adapter->num_vfs) 91 return; 92 93 /* If there are pre-existing VFs then we have to force 94 * use of that many because they were not deleted the last 95 * time someone removed the PF driver. That would have 96 * been because they were allocated to guest VMs and can't 97 * be removed. Go ahead and just re-enable the old amount. 98 * If the user wants to change the number of VFs they can 99 * use ethtool while making sure no VFs are allocated to 100 * guest VMs... i.e. the right way. 101 */ 102 if (pre_existing_vfs) { 103 adapter->num_vfs = pre_existing_vfs; 104 dev_warn(&adapter->pdev->dev, "Virtual Functions already " 105 "enabled for this device - Please reload all " 106 "VF drivers to avoid spoofed packet errors\n"); 107 } else { 108 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); 109 } 110 if (err) { 111 e_err(probe, "Failed to enable PCI sriov: %d\n", err); 112 goto err_novfs; 113 } 114 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; 115 116 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs); 117 118 num_vf_macvlans = hw->mac.num_rar_entries - 119 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs); 120 121 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans, 122 sizeof(struct vf_macvlans), 123 GFP_KERNEL); 124 if (mv_list) { 125 /* Initialize list of VF macvlans */ 126 INIT_LIST_HEAD(&adapter->vf_mvs.l); 127 for (i = 0; i < num_vf_macvlans; i++) { 128 mv_list->vf = -1; 129 mv_list->free = true; 130 mv_list->rar_entry = hw->mac.num_rar_entries - 131 (i + adapter->num_vfs + 1); 132 list_add(&mv_list->l, &adapter->vf_mvs.l); 133 mv_list++; 134 } 135 } 136 137 /* If call to enable VFs succeeded then allocate memory 138 * for per VF control structures. 139 */ 140 adapter->vfinfo = 141 kcalloc(adapter->num_vfs, 142 sizeof(struct vf_data_storage), GFP_KERNEL); 143 if (adapter->vfinfo) { 144 /* Now that we're sure SR-IOV is enabled 145 * and memory allocated set up the mailbox parameters 146 */ 147 ixgbe_init_mbx_params_pf(hw); 148 memcpy(&hw->mbx.ops, ii->mbx_ops, 149 sizeof(hw->mbx.ops)); 150 151 /* Disable RSC when in SR-IOV mode */ 152 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | 153 IXGBE_FLAG2_RSC_ENABLED); 154 for (i = 0; i < adapter->num_vfs; i++) 155 adapter->vfinfo[i].spoofchk_enabled = true; 156 return; 157 } 158 159 /* Oh oh */ 160 e_err(probe, "Unable to allocate memory for VF Data Storage - " 161 "SRIOV disabled\n"); 162 pci_disable_sriov(adapter->pdev); 163 164 err_novfs: 165 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 166 adapter->num_vfs = 0; 167 } 168 #endif /* #ifdef CONFIG_PCI_IOV */ 169 170 void ixgbe_disable_sriov(struct ixgbe_adapter *adapter) 171 { 172 struct ixgbe_hw *hw = &adapter->hw; 173 u32 gcr; 174 u32 gpie; 175 u32 vmdctl; 176 int i; 177 178 #ifdef CONFIG_PCI_IOV 179 /* disable iov and allow time for transactions to clear */ 180 pci_disable_sriov(adapter->pdev); 181 #endif 182 183 /* turn off device IOV mode */ 184 gcr = IXGBE_READ_REG(hw, IXGBE_GCR_EXT); 185 gcr &= ~(IXGBE_GCR_EXT_SRIOV); 186 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr); 187 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 188 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 189 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 190 191 /* set default pool back to 0 */ 192 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 193 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 194 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 195 IXGBE_WRITE_FLUSH(hw); 196 197 /* take a breather then clean up driver data */ 198 msleep(100); 199 200 /* Release reference to VF devices */ 201 for (i = 0; i < adapter->num_vfs; i++) { 202 if (adapter->vfinfo[i].vfdev) 203 pci_dev_put(adapter->vfinfo[i].vfdev); 204 } 205 kfree(adapter->vfinfo); 206 kfree(adapter->mv_list); 207 adapter->vfinfo = NULL; 208 209 adapter->num_vfs = 0; 210 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; 211 } 212 213 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, 214 int entries, u16 *hash_list, u32 vf) 215 { 216 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 217 struct ixgbe_hw *hw = &adapter->hw; 218 int i; 219 u32 vector_bit; 220 u32 vector_reg; 221 u32 mta_reg; 222 223 /* only so many hash values supported */ 224 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); 225 226 /* 227 * salt away the number of multi cast addresses assigned 228 * to this VF for later use to restore when the PF multi cast 229 * list changes 230 */ 231 vfinfo->num_vf_mc_hashes = entries; 232 233 /* 234 * VFs are limited to using the MTA hash table for their multicast 235 * addresses 236 */ 237 for (i = 0; i < entries; i++) { 238 vfinfo->vf_mc_hashes[i] = hash_list[i]; 239 } 240 241 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { 242 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; 243 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; 244 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 245 mta_reg |= (1 << vector_bit); 246 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 247 } 248 249 return 0; 250 } 251 252 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter) 253 { 254 struct ixgbe_hw *hw = &adapter->hw; 255 struct list_head *pos; 256 struct vf_macvlans *entry; 257 258 list_for_each(pos, &adapter->vf_mvs.l) { 259 entry = list_entry(pos, struct vf_macvlans, l); 260 if (entry->free == false) 261 hw->mac.ops.set_rar(hw, entry->rar_entry, 262 entry->vf_macvlan, 263 entry->vf, IXGBE_RAH_AV); 264 } 265 } 266 267 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) 268 { 269 struct ixgbe_hw *hw = &adapter->hw; 270 struct vf_data_storage *vfinfo; 271 int i, j; 272 u32 vector_bit; 273 u32 vector_reg; 274 u32 mta_reg; 275 276 for (i = 0; i < adapter->num_vfs; i++) { 277 vfinfo = &adapter->vfinfo[i]; 278 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { 279 hw->addr_ctrl.mta_in_use++; 280 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; 281 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; 282 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); 283 mta_reg |= (1 << vector_bit); 284 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); 285 } 286 } 287 288 /* Restore any VF macvlans */ 289 ixgbe_restore_vf_macvlans(adapter); 290 } 291 292 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, 293 u32 vf) 294 { 295 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add); 296 } 297 298 static void ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf) 299 { 300 struct ixgbe_hw *hw = &adapter->hw; 301 int new_mtu = msgbuf[1]; 302 u32 max_frs; 303 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; 304 305 /* Only X540 supports jumbo frames in IOV mode */ 306 if (adapter->hw.mac.type != ixgbe_mac_X540) 307 return; 308 309 /* MTU < 68 is an error and causes problems on some kernels */ 310 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) { 311 e_err(drv, "VF mtu %d out of range\n", new_mtu); 312 return; 313 } 314 315 max_frs = (IXGBE_READ_REG(hw, IXGBE_MAXFRS) & 316 IXGBE_MHADD_MFS_MASK) >> IXGBE_MHADD_MFS_SHIFT; 317 if (max_frs < new_mtu) { 318 max_frs = new_mtu << IXGBE_MHADD_MFS_SHIFT; 319 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); 320 } 321 322 e_info(hw, "VF requests change max MTU to %d\n", new_mtu); 323 } 324 325 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) 326 { 327 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); 328 vmolr |= (IXGBE_VMOLR_ROMPE | 329 IXGBE_VMOLR_BAM); 330 if (aupe) 331 vmolr |= IXGBE_VMOLR_AUPE; 332 else 333 vmolr &= ~IXGBE_VMOLR_AUPE; 334 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); 335 } 336 337 static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, u32 vid, u32 vf) 338 { 339 struct ixgbe_hw *hw = &adapter->hw; 340 341 if (vid) 342 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 343 (vid | IXGBE_VMVIR_VLANA_DEFAULT)); 344 else 345 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); 346 } 347 348 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) 349 { 350 struct ixgbe_hw *hw = &adapter->hw; 351 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 352 353 /* reset offloads to defaults */ 354 if (adapter->vfinfo[vf].pf_vlan) { 355 ixgbe_set_vf_vlan(adapter, true, 356 adapter->vfinfo[vf].pf_vlan, vf); 357 ixgbe_set_vmvir(adapter, 358 (adapter->vfinfo[vf].pf_vlan | 359 (adapter->vfinfo[vf].pf_qos << 360 VLAN_PRIO_SHIFT)), vf); 361 ixgbe_set_vmolr(hw, vf, false); 362 } else { 363 ixgbe_set_vmvir(adapter, 0, vf); 364 ixgbe_set_vmolr(hw, vf, true); 365 } 366 367 /* reset multicast table array for vf */ 368 adapter->vfinfo[vf].num_vf_mc_hashes = 0; 369 370 /* Flush and reset the mta with the new values */ 371 ixgbe_set_rx_mode(adapter->netdev); 372 373 hw->mac.ops.clear_rar(hw, rar_entry); 374 } 375 376 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, 377 int vf, unsigned char *mac_addr) 378 { 379 struct ixgbe_hw *hw = &adapter->hw; 380 int rar_entry = hw->mac.num_rar_entries - (vf + 1); 381 382 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6); 383 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV); 384 385 return 0; 386 } 387 388 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, 389 int vf, int index, unsigned char *mac_addr) 390 { 391 struct ixgbe_hw *hw = &adapter->hw; 392 struct list_head *pos; 393 struct vf_macvlans *entry; 394 395 if (index <= 1) { 396 list_for_each(pos, &adapter->vf_mvs.l) { 397 entry = list_entry(pos, struct vf_macvlans, l); 398 if (entry->vf == vf) { 399 entry->vf = -1; 400 entry->free = true; 401 entry->is_macvlan = false; 402 hw->mac.ops.clear_rar(hw, entry->rar_entry); 403 } 404 } 405 } 406 407 /* 408 * If index was zero then we were asked to clear the uc list 409 * for the VF. We're done. 410 */ 411 if (!index) 412 return 0; 413 414 entry = NULL; 415 416 list_for_each(pos, &adapter->vf_mvs.l) { 417 entry = list_entry(pos, struct vf_macvlans, l); 418 if (entry->free) 419 break; 420 } 421 422 /* 423 * If we traversed the entire list and didn't find a free entry 424 * then we're out of space on the RAR table. Also entry may 425 * be NULL because the original memory allocation for the list 426 * failed, which is not fatal but does mean we can't support 427 * VF requests for MACVLAN because we couldn't allocate 428 * memory for the list management required. 429 */ 430 if (!entry || !entry->free) 431 return -ENOSPC; 432 433 entry->free = false; 434 entry->is_macvlan = true; 435 entry->vf = vf; 436 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); 437 438 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV); 439 440 return 0; 441 } 442 443 int ixgbe_check_vf_assignment(struct ixgbe_adapter *adapter) 444 { 445 #ifdef CONFIG_PCI_IOV 446 int i; 447 for (i = 0; i < adapter->num_vfs; i++) { 448 if (adapter->vfinfo[i].vfdev->dev_flags & 449 PCI_DEV_FLAGS_ASSIGNED) 450 return true; 451 } 452 #endif 453 return false; 454 } 455 456 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) 457 { 458 unsigned char vf_mac_addr[6]; 459 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 460 unsigned int vfn = (event_mask & 0x3f); 461 struct pci_dev *pvfdev; 462 unsigned int device_id; 463 u16 thisvf_devfn = (pdev->devfn + 0x80 + (vfn << 1)) | 464 (pdev->devfn & 1); 465 466 bool enable = ((event_mask & 0x10000000U) != 0); 467 468 if (enable) { 469 random_ether_addr(vf_mac_addr); 470 e_info(probe, "IOV: VF %d is enabled MAC %pM\n", 471 vfn, vf_mac_addr); 472 /* 473 * Store away the VF "permananet" MAC address, it will ask 474 * for it later. 475 */ 476 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6); 477 478 switch (adapter->hw.mac.type) { 479 case ixgbe_mac_82599EB: 480 device_id = IXGBE_DEV_ID_82599_VF; 481 break; 482 case ixgbe_mac_X540: 483 device_id = IXGBE_DEV_ID_X540_VF; 484 break; 485 default: 486 device_id = 0; 487 break; 488 } 489 490 pvfdev = pci_get_device(IXGBE_INTEL_VENDOR_ID, device_id, NULL); 491 while (pvfdev) { 492 if (pvfdev->devfn == thisvf_devfn) 493 break; 494 pvfdev = pci_get_device(IXGBE_INTEL_VENDOR_ID, 495 device_id, pvfdev); 496 } 497 if (pvfdev) 498 adapter->vfinfo[vfn].vfdev = pvfdev; 499 else 500 e_err(drv, "Couldn't find pci dev ptr for VF %4.4x\n", 501 thisvf_devfn); 502 } 503 504 return 0; 505 } 506 507 static inline void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) 508 { 509 struct ixgbe_hw *hw = &adapter->hw; 510 u32 reg; 511 u32 reg_offset, vf_shift; 512 513 vf_shift = vf % 32; 514 reg_offset = vf / 32; 515 516 /* enable transmit and receive for vf */ 517 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); 518 reg |= (reg | (1 << vf_shift)); 519 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg); 520 521 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); 522 reg |= (reg | (1 << vf_shift)); 523 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg); 524 525 /* Enable counting of spoofed packets in the SSVPC register */ 526 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); 527 reg |= (1 << vf_shift); 528 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); 529 530 ixgbe_vf_reset_event(adapter, vf); 531 } 532 533 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) 534 { 535 u32 mbx_size = IXGBE_VFMAILBOX_SIZE; 536 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 537 struct ixgbe_hw *hw = &adapter->hw; 538 s32 retval; 539 int entries; 540 u16 *hash_list; 541 int add, vid, index; 542 u8 *new_mac; 543 544 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); 545 546 if (retval) 547 pr_err("Error receiving message from VF\n"); 548 549 /* this is a message we already processed, do nothing */ 550 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) 551 return retval; 552 553 /* 554 * until the vf completes a virtual function reset it should not be 555 * allowed to start any configuration. 556 */ 557 558 if (msgbuf[0] == IXGBE_VF_RESET) { 559 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; 560 new_mac = (u8 *)(&msgbuf[1]); 561 e_info(probe, "VF Reset msg received from vf %d\n", vf); 562 adapter->vfinfo[vf].clear_to_send = false; 563 ixgbe_vf_reset_msg(adapter, vf); 564 adapter->vfinfo[vf].clear_to_send = true; 565 566 if (is_valid_ether_addr(new_mac) && 567 !adapter->vfinfo[vf].pf_set_mac) 568 ixgbe_set_vf_mac(adapter, vf, vf_mac); 569 else 570 ixgbe_set_vf_mac(adapter, 571 vf, adapter->vfinfo[vf].vf_mac_addresses); 572 573 /* reply to reset with ack and vf mac address */ 574 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK; 575 memcpy(new_mac, vf_mac, IXGBE_ETH_LENGTH_OF_ADDRESS); 576 /* 577 * Piggyback the multicast filter type so VF can compute the 578 * correct vectors 579 */ 580 msgbuf[3] = hw->mac.mc_filter_type; 581 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); 582 583 return retval; 584 } 585 586 if (!adapter->vfinfo[vf].clear_to_send) { 587 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 588 ixgbe_write_mbx(hw, msgbuf, 1, vf); 589 return retval; 590 } 591 592 switch ((msgbuf[0] & 0xFFFF)) { 593 case IXGBE_VF_SET_MAC_ADDR: 594 new_mac = ((u8 *)(&msgbuf[1])); 595 if (is_valid_ether_addr(new_mac) && 596 !adapter->vfinfo[vf].pf_set_mac) { 597 ixgbe_set_vf_mac(adapter, vf, new_mac); 598 } else if (memcmp(adapter->vfinfo[vf].vf_mac_addresses, 599 new_mac, ETH_ALEN)) { 600 e_warn(drv, "VF %d attempted to override " 601 "administratively set MAC address\nReload " 602 "the VF driver to resume operations\n", vf); 603 retval = -1; 604 } 605 break; 606 case IXGBE_VF_SET_MULTICAST: 607 entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 608 >> IXGBE_VT_MSGINFO_SHIFT; 609 hash_list = (u16 *)&msgbuf[1]; 610 retval = ixgbe_set_vf_multicasts(adapter, entries, 611 hash_list, vf); 612 break; 613 case IXGBE_VF_SET_LPE: 614 ixgbe_set_vf_lpe(adapter, msgbuf); 615 break; 616 case IXGBE_VF_SET_VLAN: 617 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) 618 >> IXGBE_VT_MSGINFO_SHIFT; 619 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); 620 if (adapter->vfinfo[vf].pf_vlan) { 621 e_warn(drv, "VF %d attempted to override " 622 "administratively set VLAN configuration\n" 623 "Reload the VF driver to resume operations\n", 624 vf); 625 retval = -1; 626 } else { 627 if (add) 628 adapter->vfinfo[vf].vlan_count++; 629 else if (adapter->vfinfo[vf].vlan_count) 630 adapter->vfinfo[vf].vlan_count--; 631 retval = ixgbe_set_vf_vlan(adapter, add, vid, vf); 632 if (!retval && adapter->vfinfo[vf].spoofchk_enabled) 633 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 634 } 635 break; 636 case IXGBE_VF_SET_MACVLAN: 637 index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> 638 IXGBE_VT_MSGINFO_SHIFT; 639 /* 640 * If the VF is allowed to set MAC filters then turn off 641 * anti-spoofing to avoid false positives. An index 642 * greater than 0 will indicate the VF is setting a 643 * macvlan MAC filter. 644 */ 645 if (index > 0 && adapter->vfinfo[vf].spoofchk_enabled) 646 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false); 647 retval = ixgbe_set_vf_macvlan(adapter, vf, index, 648 (unsigned char *)(&msgbuf[1])); 649 break; 650 default: 651 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); 652 retval = IXGBE_ERR_MBX; 653 break; 654 } 655 656 /* notify the VF of the results of what it sent us */ 657 if (retval) 658 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; 659 else 660 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; 661 662 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; 663 664 ixgbe_write_mbx(hw, msgbuf, 1, vf); 665 666 return retval; 667 } 668 669 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) 670 { 671 struct ixgbe_hw *hw = &adapter->hw; 672 u32 msg = IXGBE_VT_MSGTYPE_NACK; 673 674 /* if device isn't clear to send it shouldn't be reading either */ 675 if (!adapter->vfinfo[vf].clear_to_send) 676 ixgbe_write_mbx(hw, &msg, 1, vf); 677 } 678 679 void ixgbe_msg_task(struct ixgbe_adapter *adapter) 680 { 681 struct ixgbe_hw *hw = &adapter->hw; 682 u32 vf; 683 684 for (vf = 0; vf < adapter->num_vfs; vf++) { 685 /* process any reset requests */ 686 if (!ixgbe_check_for_rst(hw, vf)) 687 ixgbe_vf_reset_event(adapter, vf); 688 689 /* process any messages pending */ 690 if (!ixgbe_check_for_msg(hw, vf)) 691 ixgbe_rcv_msg_from_vf(adapter, vf); 692 693 /* process any acks */ 694 if (!ixgbe_check_for_ack(hw, vf)) 695 ixgbe_rcv_ack_from_vf(adapter, vf); 696 } 697 } 698 699 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter) 700 { 701 struct ixgbe_hw *hw = &adapter->hw; 702 703 /* disable transmit and receive for all vfs */ 704 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0); 705 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0); 706 707 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0); 708 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0); 709 } 710 711 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) 712 { 713 struct ixgbe_hw *hw = &adapter->hw; 714 u32 ping; 715 int i; 716 717 for (i = 0 ; i < adapter->num_vfs; i++) { 718 ping = IXGBE_PF_CONTROL_MSG; 719 if (adapter->vfinfo[i].clear_to_send) 720 ping |= IXGBE_VT_MSGTYPE_CTS; 721 ixgbe_write_mbx(hw, &ping, 1, i); 722 } 723 } 724 725 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 726 { 727 struct ixgbe_adapter *adapter = netdev_priv(netdev); 728 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs)) 729 return -EINVAL; 730 adapter->vfinfo[vf].pf_set_mac = true; 731 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); 732 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" 733 " change effective."); 734 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 735 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," 736 " but the PF device is not up.\n"); 737 dev_warn(&adapter->pdev->dev, "Bring the PF device up before" 738 " attempting to use the VF device.\n"); 739 } 740 return ixgbe_set_vf_mac(adapter, vf, mac); 741 } 742 743 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) 744 { 745 int err = 0; 746 struct ixgbe_adapter *adapter = netdev_priv(netdev); 747 struct ixgbe_hw *hw = &adapter->hw; 748 749 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) 750 return -EINVAL; 751 if (vlan || qos) { 752 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); 753 if (err) 754 goto out; 755 ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); 756 ixgbe_set_vmolr(hw, vf, false); 757 if (adapter->vfinfo[vf].spoofchk_enabled) 758 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); 759 adapter->vfinfo[vf].vlan_count++; 760 adapter->vfinfo[vf].pf_vlan = vlan; 761 adapter->vfinfo[vf].pf_qos = qos; 762 dev_info(&adapter->pdev->dev, 763 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 764 if (test_bit(__IXGBE_DOWN, &adapter->state)) { 765 dev_warn(&adapter->pdev->dev, 766 "The VF VLAN has been set," 767 " but the PF device is not up.\n"); 768 dev_warn(&adapter->pdev->dev, 769 "Bring the PF device up before" 770 " attempting to use the VF device.\n"); 771 } 772 } else { 773 err = ixgbe_set_vf_vlan(adapter, false, 774 adapter->vfinfo[vf].pf_vlan, vf); 775 ixgbe_set_vmvir(adapter, vlan, vf); 776 ixgbe_set_vmolr(hw, vf, true); 777 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); 778 if (adapter->vfinfo[vf].vlan_count) 779 adapter->vfinfo[vf].vlan_count--; 780 adapter->vfinfo[vf].pf_vlan = 0; 781 adapter->vfinfo[vf].pf_qos = 0; 782 } 783 out: 784 return err; 785 } 786 787 static int ixgbe_link_mbps(int internal_link_speed) 788 { 789 switch (internal_link_speed) { 790 case IXGBE_LINK_SPEED_100_FULL: 791 return 100; 792 case IXGBE_LINK_SPEED_1GB_FULL: 793 return 1000; 794 case IXGBE_LINK_SPEED_10GB_FULL: 795 return 10000; 796 default: 797 return 0; 798 } 799 } 800 801 static void ixgbe_set_vf_rate_limit(struct ixgbe_hw *hw, int vf, int tx_rate, 802 int link_speed) 803 { 804 int rf_dec, rf_int; 805 u32 bcnrc_val; 806 807 if (tx_rate != 0) { 808 /* Calculate the rate factor values to set */ 809 rf_int = link_speed / tx_rate; 810 rf_dec = (link_speed - (rf_int * tx_rate)); 811 rf_dec = (rf_dec * (1<<IXGBE_RTTBCNRC_RF_INT_SHIFT)) / tx_rate; 812 813 bcnrc_val = IXGBE_RTTBCNRC_RS_ENA; 814 bcnrc_val |= ((rf_int<<IXGBE_RTTBCNRC_RF_INT_SHIFT) & 815 IXGBE_RTTBCNRC_RF_INT_MASK); 816 bcnrc_val |= (rf_dec & IXGBE_RTTBCNRC_RF_DEC_MASK); 817 } else { 818 bcnrc_val = 0; 819 } 820 821 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, 2*vf); /* vf Y uses queue 2*Y */ 822 /* 823 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 824 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported 825 * and 0x004 otherwise. 826 */ 827 switch (hw->mac.type) { 828 case ixgbe_mac_82599EB: 829 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); 830 break; 831 case ixgbe_mac_X540: 832 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); 833 break; 834 default: 835 break; 836 } 837 838 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 839 } 840 841 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) 842 { 843 int actual_link_speed, i; 844 bool reset_rate = false; 845 846 /* VF Tx rate limit was not set */ 847 if (adapter->vf_rate_link_speed == 0) 848 return; 849 850 actual_link_speed = ixgbe_link_mbps(adapter->link_speed); 851 if (actual_link_speed != adapter->vf_rate_link_speed) { 852 reset_rate = true; 853 adapter->vf_rate_link_speed = 0; 854 dev_info(&adapter->pdev->dev, 855 "Link speed has been changed. VF Transmit rate " 856 "is disabled\n"); 857 } 858 859 for (i = 0; i < adapter->num_vfs; i++) { 860 if (reset_rate) 861 adapter->vfinfo[i].tx_rate = 0; 862 863 ixgbe_set_vf_rate_limit(&adapter->hw, i, 864 adapter->vfinfo[i].tx_rate, 865 actual_link_speed); 866 } 867 } 868 869 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) 870 { 871 struct ixgbe_adapter *adapter = netdev_priv(netdev); 872 struct ixgbe_hw *hw = &adapter->hw; 873 int actual_link_speed; 874 875 actual_link_speed = ixgbe_link_mbps(adapter->link_speed); 876 if ((vf >= adapter->num_vfs) || (!adapter->link_up) || 877 (tx_rate > actual_link_speed) || (actual_link_speed != 10000) || 878 ((tx_rate != 0) && (tx_rate <= 10))) 879 /* rate limit cannot be set to 10Mb or less in 10Gb adapters */ 880 return -EINVAL; 881 882 adapter->vf_rate_link_speed = actual_link_speed; 883 adapter->vfinfo[vf].tx_rate = (u16)tx_rate; 884 ixgbe_set_vf_rate_limit(hw, vf, tx_rate, actual_link_speed); 885 886 return 0; 887 } 888 889 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) 890 { 891 struct ixgbe_adapter *adapter = netdev_priv(netdev); 892 int vf_target_reg = vf >> 3; 893 int vf_target_shift = vf % 8; 894 struct ixgbe_hw *hw = &adapter->hw; 895 u32 regval; 896 897 adapter->vfinfo[vf].spoofchk_enabled = setting; 898 899 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 900 regval &= ~(1 << vf_target_shift); 901 regval |= (setting << vf_target_shift); 902 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 903 904 if (adapter->vfinfo[vf].vlan_count) { 905 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT; 906 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 907 regval &= ~(1 << vf_target_shift); 908 regval |= (setting << vf_target_shift); 909 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval); 910 } 911 912 return 0; 913 } 914 915 int ixgbe_ndo_get_vf_config(struct net_device *netdev, 916 int vf, struct ifla_vf_info *ivi) 917 { 918 struct ixgbe_adapter *adapter = netdev_priv(netdev); 919 if (vf >= adapter->num_vfs) 920 return -EINVAL; 921 ivi->vf = vf; 922 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); 923 ivi->tx_rate = adapter->vfinfo[vf].tx_rate; 924 ivi->vlan = adapter->vfinfo[vf].pf_vlan; 925 ivi->qos = adapter->vfinfo[vf].pf_qos; 926 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; 927 return 0; 928 } 929