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1// SPDX-License-Identifier: GPL-2.02/* Copyright(c) 1999 - 2018 Intel Corporation. */3 4#include <linux/types.h>5#include <linux/module.h>6#include <linux/pci.h>7#include <linux/netdevice.h>8#include <linux/vmalloc.h>9#include <linux/string.h>10#include <linux/in.h>11#include <linux/ip.h>12#include <linux/tcp.h>13#include <linux/ipv6.h>14#include <linux/if_bridge.h>15#ifdef NETIF_F_HW_VLAN_CTAG_TX16#include <linux/if_vlan.h>17#endif18 19#include "ixgbe.h"20#include "ixgbe_type.h"21#include "ixgbe_sriov.h"22 23#ifdef CONFIG_PCI_IOV24static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter,25 unsigned int num_vfs)26{27 struct ixgbe_hw *hw = &adapter->hw;28 struct vf_macvlans *mv_list;29 int num_vf_macvlans, i;30 31 /* Initialize list of VF macvlans */32 INIT_LIST_HEAD(&adapter->vf_mvs.l);33 34 num_vf_macvlans = hw->mac.num_rar_entries -35 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs);36 if (!num_vf_macvlans)37 return;38 39 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),40 GFP_KERNEL);41 if (mv_list) {42 for (i = 0; i < num_vf_macvlans; i++) {43 mv_list[i].vf = -1;44 mv_list[i].free = true;45 list_add(&mv_list[i].l, &adapter->vf_mvs.l);46 }47 adapter->mv_list = mv_list;48 }49}50 51static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter,52 unsigned int num_vfs)53{54 struct ixgbe_hw *hw = &adapter->hw;55 int i;56 57 if (adapter->xdp_prog) {58 e_warn(probe, "SRIOV is not supported with XDP\n");59 return -EINVAL;60 }61 62 /* Enable VMDq flag so device will be set in VM mode */63 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED |64 IXGBE_FLAG_VMDQ_ENABLED;65 66 /* Allocate memory for per VF control structures */67 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage),68 GFP_KERNEL);69 if (!adapter->vfinfo)70 return -ENOMEM;71 72 adapter->num_vfs = num_vfs;73 74 ixgbe_alloc_vf_macvlans(adapter, num_vfs);75 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs;76 77 /* Initialize default switching mode VEB */78 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);79 adapter->bridge_mode = BRIDGE_MODE_VEB;80 81 /* limit traffic classes based on VFs enabled */82 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) {83 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;84 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;85 } else if (num_vfs < 32) {86 adapter->dcb_cfg.num_tcs.pg_tcs = 4;87 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;88 } else {89 adapter->dcb_cfg.num_tcs.pg_tcs = 1;90 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;91 }92 93 /* Disable RSC when in SR-IOV mode */94 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |95 IXGBE_FLAG2_RSC_ENABLED);96 97 for (i = 0; i < num_vfs; i++) {98 /* enable spoof checking for all VFs */99 adapter->vfinfo[i].spoofchk_enabled = true;100 adapter->vfinfo[i].link_enable = true;101 102 /* We support VF RSS querying only for 82599 and x540103 * devices at the moment. These devices share RSS104 * indirection table and RSS hash key with PF therefore105 * we want to disable the querying by default.106 */107 adapter->vfinfo[i].rss_query_enabled = false;108 109 /* Untrust all VFs */110 adapter->vfinfo[i].trusted = false;111 112 /* set the default xcast mode */113 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;114 }115 116 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs);117 return 0;118}119 120/**121 * ixgbe_get_vfs - Find and take references to all vf devices122 * @adapter: Pointer to adapter struct123 */124static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)125{126 struct pci_dev *pdev = adapter->pdev;127 u16 vendor = pdev->vendor;128 struct pci_dev *vfdev;129 int vf = 0;130 u16 vf_id;131 int pos;132 133 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);134 if (!pos)135 return;136 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);137 138 vfdev = pci_get_device(vendor, vf_id, NULL);139 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {140 if (!vfdev->is_virtfn)141 continue;142 if (vfdev->physfn != pdev)143 continue;144 if (vf >= adapter->num_vfs)145 continue;146 pci_dev_get(vfdev);147 adapter->vfinfo[vf].vfdev = vfdev;148 ++vf;149 }150}151 152/* Note this function is called when the user wants to enable SR-IOV153 * VFs using the now deprecated module parameter154 */155void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs)156{157 int pre_existing_vfs = 0;158 unsigned int num_vfs;159 160 pre_existing_vfs = pci_num_vf(adapter->pdev);161 if (!pre_existing_vfs && !max_vfs)162 return;163 164 /* If there are pre-existing VFs then we have to force165 * use of that many - over ride any module parameter value.166 * This may result from the user unloading the PF driver167 * while VFs were assigned to guest VMs or because the VFs168 * have been created via the new PCI SR-IOV sysfs interface.169 */170 if (pre_existing_vfs) {171 num_vfs = pre_existing_vfs;172 dev_warn(&adapter->pdev->dev,173 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");174 } else {175 int err;176 /*177 * The 82599 supports up to 64 VFs per physical function178 * but this implementation limits allocation to 63 so that179 * basic networking resources are still available to the180 * physical function. If the user requests greater than181 * 63 VFs then it is an error - reset to default of zero.182 */183 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT);184 185 err = pci_enable_sriov(adapter->pdev, num_vfs);186 if (err) {187 e_err(probe, "Failed to enable PCI sriov: %d\n", err);188 return;189 }190 }191 192 if (!__ixgbe_enable_sriov(adapter, num_vfs)) {193 ixgbe_get_vfs(adapter);194 return;195 }196 197 /* If we have gotten to this point then there is no memory available198 * to manage the VF devices - print message and bail.199 */200 e_err(probe, "Unable to allocate memory for VF Data Storage - "201 "SRIOV disabled\n");202 ixgbe_disable_sriov(adapter);203}204 205#endif /* #ifdef CONFIG_PCI_IOV */206int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)207{208 unsigned int num_vfs = adapter->num_vfs, vf;209 unsigned long flags;210 int rss;211 212 spin_lock_irqsave(&adapter->vfs_lock, flags);213 /* set num VFs to 0 to prevent access to vfinfo */214 adapter->num_vfs = 0;215 spin_unlock_irqrestore(&adapter->vfs_lock, flags);216 217 /* put the reference to all of the vf devices */218 for (vf = 0; vf < num_vfs; ++vf) {219 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;220 221 if (!vfdev)222 continue;223 adapter->vfinfo[vf].vfdev = NULL;224 pci_dev_put(vfdev);225 }226 227 /* free VF control structures */228 kfree(adapter->vfinfo);229 adapter->vfinfo = NULL;230 231 /* free macvlan list */232 kfree(adapter->mv_list);233 adapter->mv_list = NULL;234 235 /* if SR-IOV is already disabled then there is nothing to do */236 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))237 return 0;238 239#ifdef CONFIG_PCI_IOV240 /*241 * If our VFs are assigned we cannot shut down SR-IOV242 * without causing issues, so just leave the hardware243 * available but disabled244 */245 if (pci_vfs_assigned(adapter->pdev)) {246 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");247 return -EPERM;248 }249 /* disable iov and allow time for transactions to clear */250 pci_disable_sriov(adapter->pdev);251#endif252 253 /* Disable VMDq flag so device will be set in VM mode */254 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) {255 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;256 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;257 rss = min_t(int, ixgbe_max_rss_indices(adapter),258 num_online_cpus());259 } else {260 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());261 }262 263 adapter->ring_feature[RING_F_VMDQ].offset = 0;264 adapter->ring_feature[RING_F_RSS].limit = rss;265 266 /* take a breather then clean up driver data */267 msleep(100);268 return 0;269}270 271static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)272{273#ifdef CONFIG_PCI_IOV274 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);275 int pre_existing_vfs = pci_num_vf(dev);276 int err = 0, num_rx_pools, i, limit;277 u8 num_tc;278 279 if (pre_existing_vfs && pre_existing_vfs != num_vfs)280 err = ixgbe_disable_sriov(adapter);281 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)282 return num_vfs;283 284 if (err)285 return err;286 287 /* While the SR-IOV capability structure reports total VFs to be 64,288 * we limit the actual number allocated as below based on two factors.289 * Num_TCs MAX_VFs290 * 1 63291 * <=4 31292 * >4 15293 * First, we reserve some transmit/receive resources for the PF.294 * Second, VMDQ also uses the same pools that SR-IOV does. We need to295 * account for this, so that we don't accidentally allocate more VFs296 * than we have available pools. The PCI bus driver already checks for297 * other values out of range.298 */299 num_tc = adapter->hw_tcs;300 num_rx_pools = bitmap_weight(adapter->fwd_bitmask,301 adapter->num_rx_pools);302 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC :303 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC;304 305 if (num_vfs > (limit - num_rx_pools)) {306 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n",307 num_tc, num_rx_pools - 1, limit - num_rx_pools);308 return -EPERM;309 }310 311 err = __ixgbe_enable_sriov(adapter, num_vfs);312 if (err)313 return err;314 315 for (i = 0; i < num_vfs; i++)316 ixgbe_vf_configuration(dev, (i | 0x10000000));317 318 /* reset before enabling SRIOV to avoid mailbox issues */319 ixgbe_sriov_reinit(adapter);320 321 err = pci_enable_sriov(dev, num_vfs);322 if (err) {323 e_dev_warn("Failed to enable PCI sriov: %d\n", err);324 return err;325 }326 ixgbe_get_vfs(adapter);327 328 return num_vfs;329#else330 return 0;331#endif332}333 334static int ixgbe_pci_sriov_disable(struct pci_dev *dev)335{336 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);337 int err;338#ifdef CONFIG_PCI_IOV339 u32 current_flags = adapter->flags;340 int prev_num_vf = pci_num_vf(dev);341#endif342 343 err = ixgbe_disable_sriov(adapter);344 345 /* Only reinit if no error and state changed */346#ifdef CONFIG_PCI_IOV347 if (!err && (current_flags != adapter->flags ||348 prev_num_vf != pci_num_vf(dev)))349 ixgbe_sriov_reinit(adapter);350#endif351 352 return err;353}354 355int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)356{357 if (num_vfs == 0)358 return ixgbe_pci_sriov_disable(dev);359 else360 return ixgbe_pci_sriov_enable(dev, num_vfs);361}362 363static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,364 u32 *msgbuf, u32 vf)365{366 int entries = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);367 u16 *hash_list = (u16 *)&msgbuf[1];368 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];369 struct ixgbe_hw *hw = &adapter->hw;370 int i;371 u32 vector_bit;372 u32 vector_reg;373 u32 mta_reg;374 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));375 376 /* only so many hash values supported */377 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);378 379 /*380 * salt away the number of multi cast addresses assigned381 * to this VF for later use to restore when the PF multi cast382 * list changes383 */384 vfinfo->num_vf_mc_hashes = entries;385 386 /*387 * VFs are limited to using the MTA hash table for their multicast388 * addresses389 */390 for (i = 0; i < entries; i++) {391 vfinfo->vf_mc_hashes[i] = hash_list[i];392 }393 394 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {395 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;396 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;397 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));398 mta_reg |= BIT(vector_bit);399 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);400 }401 vmolr |= IXGBE_VMOLR_ROMPE;402 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);403 404 return 0;405}406 407#ifdef CONFIG_PCI_IOV408void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)409{410 struct ixgbe_hw *hw = &adapter->hw;411 struct vf_data_storage *vfinfo;412 int i, j;413 u32 vector_bit;414 u32 vector_reg;415 u32 mta_reg;416 417 for (i = 0; i < adapter->num_vfs; i++) {418 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));419 vfinfo = &adapter->vfinfo[i];420 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {421 hw->addr_ctrl.mta_in_use++;422 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;423 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;424 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));425 mta_reg |= BIT(vector_bit);426 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);427 }428 429 if (vfinfo->num_vf_mc_hashes)430 vmolr |= IXGBE_VMOLR_ROMPE;431 else432 vmolr &= ~IXGBE_VMOLR_ROMPE;433 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);434 }435 436 /* Restore any VF macvlans */437 ixgbe_full_sync_mac_table(adapter);438}439#endif440 441static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,442 u32 vf)443{444 struct ixgbe_hw *hw = &adapter->hw;445 int err;446 447 /* If VLAN overlaps with one the PF is currently monitoring make448 * sure that we are able to allocate a VLVF entry. This may be449 * redundant but it guarantees PF will maintain visibility to450 * the VLAN.451 */452 if (add && test_bit(vid, adapter->active_vlans)) {453 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);454 if (err)455 return err;456 }457 458 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);459 460 if (add && !err)461 return err;462 463 /* If we failed to add the VF VLAN or we are removing the VF VLAN464 * we may need to drop the PF pool bit in order to allow us to free465 * up the VLVF resources.466 */467 if (test_bit(vid, adapter->active_vlans) ||468 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))469 ixgbe_update_pf_promisc_vlvf(adapter, vid);470 471 return err;472}473 474static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf)475{476 struct ixgbe_hw *hw = &adapter->hw;477 u32 max_frs;478 479 if (max_frame < ETH_MIN_MTU || max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {480 e_err(drv, "VF max_frame %d out of range\n", max_frame);481 return -EINVAL;482 }483 484 /*485 * For 82599EB we have to keep all PFs and VFs operating with486 * the same max_frame value in order to avoid sending an oversize487 * frame to a VF. In order to guarantee this is handled correctly488 * for all cases we have several special exceptions to take into489 * account before we can enable the VF for receive490 */491 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {492 struct net_device *dev = adapter->netdev;493 int pf_max_frame = dev->mtu + ETH_HLEN;494 u32 reg_offset, vf_shift, vfre;495 int err = 0;496 497#ifdef CONFIG_FCOE498 if (dev->fcoe_mtu)499 pf_max_frame = max_t(int, pf_max_frame,500 IXGBE_FCOE_JUMBO_FRAME_SIZE);501 502#endif /* CONFIG_FCOE */503 switch (adapter->vfinfo[vf].vf_api) {504 case ixgbe_mbox_api_11:505 case ixgbe_mbox_api_12:506 case ixgbe_mbox_api_13:507 case ixgbe_mbox_api_14:508 /* Version 1.1 supports jumbo frames on VFs if PF has509 * jumbo frames enabled which means legacy VFs are510 * disabled511 */512 if (pf_max_frame > ETH_FRAME_LEN)513 break;514 fallthrough;515 default:516 /* If the PF or VF are running w/ jumbo frames enabled517 * we need to shut down the VF Rx path as we cannot518 * support jumbo frames on legacy VFs519 */520 if ((pf_max_frame > ETH_FRAME_LEN) ||521 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))522 err = -EINVAL;523 break;524 }525 526 /* determine VF receive enable location */527 vf_shift = vf % 32;528 reg_offset = vf / 32;529 530 /* enable or disable receive depending on error */531 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));532 if (err)533 vfre &= ~BIT(vf_shift);534 else535 vfre |= BIT(vf_shift);536 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);537 538 if (err) {539 e_err(drv, "VF max_frame %d out of range\n", max_frame);540 return err;541 }542 }543 544 /* pull current max frame size from hardware */545 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);546 max_frs &= IXGBE_MHADD_MFS_MASK;547 max_frs >>= IXGBE_MHADD_MFS_SHIFT;548 549 if (max_frs < max_frame) {550 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;551 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);552 }553 554 e_info(hw, "VF requests change max MTU to %d\n", max_frame);555 556 return 0;557}558 559static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)560{561 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));562 vmolr |= IXGBE_VMOLR_BAM;563 if (aupe)564 vmolr |= IXGBE_VMOLR_AUPE;565 else566 vmolr &= ~IXGBE_VMOLR_AUPE;567 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);568}569 570static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)571{572 struct ixgbe_hw *hw = &adapter->hw;573 574 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);575}576 577static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)578{579 struct ixgbe_hw *hw = &adapter->hw;580 u32 vlvfb_mask, pool_mask, i;581 582 /* create mask for VF and other pools */583 pool_mask = ~BIT(VMDQ_P(0) % 32);584 vlvfb_mask = BIT(vf % 32);585 586 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */587 for (i = IXGBE_VLVF_ENTRIES; i--;) {588 u32 bits[2], vlvfb, vid, vfta, vlvf;589 u32 word = i * 2 + vf / 32;590 u32 mask;591 592 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));593 594 /* if our bit isn't set we can skip it */595 if (!(vlvfb & vlvfb_mask))596 continue;597 598 /* clear our bit from vlvfb */599 vlvfb ^= vlvfb_mask;600 601 /* create 64b mask to chedk to see if we should clear VLVF */602 bits[word % 2] = vlvfb;603 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));604 605 /* if other pools are present, just remove ourselves */606 if (bits[(VMDQ_P(0) / 32) ^ 1] ||607 (bits[VMDQ_P(0) / 32] & pool_mask))608 goto update_vlvfb;609 610 /* if PF is present, leave VFTA */611 if (bits[0] || bits[1])612 goto update_vlvf;613 614 /* if we cannot determine VLAN just remove ourselves */615 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));616 if (!vlvf)617 goto update_vlvfb;618 619 vid = vlvf & VLAN_VID_MASK;620 mask = BIT(vid % 32);621 622 /* clear bit from VFTA */623 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));624 if (vfta & mask)625 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);626update_vlvf:627 /* clear POOL selection enable */628 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);629 630 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))631 vlvfb = 0;632update_vlvfb:633 /* clear pool bits */634 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);635 }636}637 638static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,639 int vf, int index, unsigned char *mac_addr)640{641 struct vf_macvlans *entry;642 bool found = false;643 int retval = 0;644 645 if (index <= 1) {646 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {647 if (entry->vf == vf) {648 entry->vf = -1;649 entry->free = true;650 entry->is_macvlan = false;651 ixgbe_del_mac_filter(adapter,652 entry->vf_macvlan, vf);653 }654 }655 }656 657 /*658 * If index was zero then we were asked to clear the uc list659 * for the VF. We're done.660 */661 if (!index)662 return 0;663 664 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {665 if (entry->free) {666 found = true;667 break;668 }669 }670 671 /*672 * If we traversed the entire list and didn't find a free entry673 * then we're out of space on the RAR table. It's also possible674 * for the &adapter->vf_mvs.l list to be empty because the original675 * memory allocation for the list failed, which is not fatal but does676 * mean we can't support VF requests for MACVLAN because we couldn't677 * allocate memory for the list management required.678 */679 if (!found)680 return -ENOSPC;681 682 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);683 if (retval < 0)684 return retval;685 686 entry->free = false;687 entry->is_macvlan = true;688 entry->vf = vf;689 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);690 691 return 0;692}693 694static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)695{696 struct ixgbe_hw *hw = &adapter->hw;697 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];698 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];699 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);700 u8 num_tcs = adapter->hw_tcs;701 u32 reg_val;702 u32 queue;703 704 /* remove VLAN filters beloning to this VF */705 ixgbe_clear_vf_vlans(adapter, vf);706 707 /* add back PF assigned VLAN or VLAN 0 */708 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);709 710 /* reset offloads to defaults */711 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);712 713 /* set outgoing tags for VFs */714 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {715 ixgbe_clear_vmvir(adapter, vf);716 } else {717 if (vfinfo->pf_qos || !num_tcs)718 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,719 vfinfo->pf_qos, vf);720 else721 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,722 adapter->default_up, vf);723 724 if (vfinfo->spoofchk_enabled) {725 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);726 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf);727 }728 }729 730 /* reset multicast table array for vf */731 adapter->vfinfo[vf].num_vf_mc_hashes = 0;732 733 /* clear any ipsec table info */734 ixgbe_ipsec_vf_clear(adapter, vf);735 736 /* Flush and reset the mta with the new values */737 ixgbe_set_rx_mode(adapter->netdev);738 739 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);740 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);741 742 /* reset VF api back to unknown */743 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;744 745 /* Restart each queue for given VF */746 for (queue = 0; queue < q_per_pool; queue++) {747 unsigned int reg_idx = (vf * q_per_pool) + queue;748 749 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx));750 751 /* Re-enabling only configured queues */752 if (reg_val) {753 reg_val |= IXGBE_TXDCTL_ENABLE;754 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);755 reg_val &= ~IXGBE_TXDCTL_ENABLE;756 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);757 }758 }759 760 IXGBE_WRITE_FLUSH(hw);761}762 763static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf)764{765 struct ixgbe_hw *hw = &adapter->hw;766 u32 word;767 768 /* Clear VF's mailbox memory */769 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++)770 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0);771 772 IXGBE_WRITE_FLUSH(hw);773}774 775static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,776 int vf, unsigned char *mac_addr)777{778 int retval;779 780 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);781 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);782 if (retval >= 0)783 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,784 ETH_ALEN);785 else786 eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses);787 788 return retval;789}790 791int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)792{793 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);794 unsigned int vfn = (event_mask & 0x3f);795 796 bool enable = ((event_mask & 0x10000000U) != 0);797 798 if (enable)799 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);800 801 return 0;802}803 804static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,805 u32 qde)806{807 struct ixgbe_hw *hw = &adapter->hw;808 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];809 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);810 int i;811 812 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {813 u32 reg;814 815 /* flush previous write */816 IXGBE_WRITE_FLUSH(hw);817 818 /* indicate to hardware that we want to set drop enable */819 reg = IXGBE_QDE_WRITE | qde;820 reg |= i << IXGBE_QDE_IDX_SHIFT;821 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);822 }823}824 825/**826 * ixgbe_set_vf_rx_tx - Set VF rx tx827 * @adapter: Pointer to adapter struct828 * @vf: VF identifier829 *830 * Set or reset correct transmit and receive for vf831 **/832static void ixgbe_set_vf_rx_tx(struct ixgbe_adapter *adapter, int vf)833{834 u32 reg_cur_tx, reg_cur_rx, reg_req_tx, reg_req_rx;835 struct ixgbe_hw *hw = &adapter->hw;836 u32 reg_offset, vf_shift;837 838 vf_shift = vf % 32;839 reg_offset = vf / 32;840 841 reg_cur_tx = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));842 reg_cur_rx = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));843 844 if (adapter->vfinfo[vf].link_enable) {845 reg_req_tx = reg_cur_tx | 1 << vf_shift;846 reg_req_rx = reg_cur_rx | 1 << vf_shift;847 } else {848 reg_req_tx = reg_cur_tx & ~(1 << vf_shift);849 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);850 }851 852 /* The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.853 * For more info take a look at ixgbe_set_vf_lpe854 */855 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {856 struct net_device *dev = adapter->netdev;857 int pf_max_frame = dev->mtu + ETH_HLEN;858 859#if IS_ENABLED(CONFIG_FCOE)860 if (dev->fcoe_mtu)861 pf_max_frame = max_t(int, pf_max_frame,862 IXGBE_FCOE_JUMBO_FRAME_SIZE);863#endif /* CONFIG_FCOE */864 865 if (pf_max_frame > ETH_FRAME_LEN)866 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);867 }868 869 /* Enable/Disable particular VF */870 if (reg_cur_tx != reg_req_tx)871 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg_req_tx);872 if (reg_cur_rx != reg_req_rx)873 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg_req_rx);874}875 876static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)877{878 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];879 struct ixgbe_hw *hw = &adapter->hw;880 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;881 u32 reg, reg_offset, vf_shift;882 u32 msgbuf[4] = {0, 0, 0, 0};883 u8 *addr = (u8 *)(&msgbuf[1]);884 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);885 int i;886 887 e_info(probe, "VF Reset msg received from vf %d\n", vf);888 889 /* reset the filters for the device */890 ixgbe_vf_reset_event(adapter, vf);891 892 ixgbe_vf_clear_mbx(adapter, vf);893 894 /* set vf mac address */895 if (!is_zero_ether_addr(vf_mac))896 ixgbe_set_vf_mac(adapter, vf, vf_mac);897 898 vf_shift = vf % 32;899 reg_offset = vf / 32;900 901 /* force drop enable for all VF Rx queues */902 reg = IXGBE_QDE_ENABLE;903 if (adapter->vfinfo[vf].pf_vlan)904 reg |= IXGBE_QDE_HIDE_VLAN;905 906 ixgbe_write_qde(adapter, vf, reg);907 908 ixgbe_set_vf_rx_tx(adapter, vf);909 910 /* enable VF mailbox for further messages */911 adapter->vfinfo[vf].clear_to_send = true;912 913 /* Enable counting of spoofed packets in the SSVPC register */914 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));915 reg |= BIT(vf_shift);916 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);917 918 /*919 * Reset the VFs TDWBAL and TDWBAH registers920 * which are not cleared by an FLR921 */922 for (i = 0; i < q_per_pool; i++) {923 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);924 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);925 }926 927 /* reply to reset with ack and vf mac address */928 msgbuf[0] = IXGBE_VF_RESET;929 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) {930 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;931 memcpy(addr, vf_mac, ETH_ALEN);932 } else {933 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;934 }935 936 /*937 * Piggyback the multicast filter type so VF can compute the938 * correct vectors939 */940 msgbuf[3] = hw->mac.mc_filter_type;941 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);942 943 return 0;944}945 946static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,947 u32 *msgbuf, u32 vf)948{949 u8 *new_mac = ((u8 *)(&msgbuf[1]));950 951 if (!is_valid_ether_addr(new_mac)) {952 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);953 return -1;954 }955 956 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&957 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {958 e_warn(drv,959 "VF %d attempted to override administratively set MAC address\n"960 "Reload the VF driver to resume operations\n",961 vf);962 return -1;963 }964 965 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;966}967 968static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,969 u32 *msgbuf, u32 vf)970{971 u32 add = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);972 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);973 u8 tcs = adapter->hw_tcs;974 975 if (adapter->vfinfo[vf].pf_vlan || tcs) {976 e_warn(drv,977 "VF %d attempted to override administratively set VLAN configuration\n"978 "Reload the VF driver to resume operations\n",979 vf);980 return -1;981 }982 983 /* VLAN 0 is a special case, don't allow it to be removed */984 if (!vid && !add)985 return 0;986 987 return ixgbe_set_vf_vlan(adapter, add, vid, vf);988}989 990static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,991 u32 *msgbuf, u32 vf)992{993 u8 *new_mac = ((u8 *)(&msgbuf[1]));994 int index = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);995 int err;996 997 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&998 index > 0) {999 e_warn(drv,1000 "VF %d requested MACVLAN filter but is administratively denied\n",1001 vf);1002 return -1;1003 }1004 1005 /* An non-zero index indicates the VF is setting a filter */1006 if (index) {1007 if (!is_valid_ether_addr(new_mac)) {1008 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);1009 return -1;1010 }1011 1012 /*1013 * If the VF is allowed to set MAC filters then turn off1014 * anti-spoofing to avoid false positives.1015 */1016 if (adapter->vfinfo[vf].spoofchk_enabled) {1017 struct ixgbe_hw *hw = &adapter->hw;1018 1019 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);1020 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);1021 }1022 }1023 1024 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);1025 if (err == -ENOSPC)1026 e_warn(drv,1027 "VF %d has requested a MACVLAN filter but there is no space for it\n",1028 vf);1029 1030 return err < 0;1031}1032 1033static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,1034 u32 *msgbuf, u32 vf)1035{1036 int api = msgbuf[1];1037 1038 switch (api) {1039 case ixgbe_mbox_api_10:1040 case ixgbe_mbox_api_11:1041 case ixgbe_mbox_api_12:1042 case ixgbe_mbox_api_13:1043 case ixgbe_mbox_api_14:1044 adapter->vfinfo[vf].vf_api = api;1045 return 0;1046 default:1047 break;1048 }1049 1050 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);1051 1052 return -1;1053}1054 1055static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,1056 u32 *msgbuf, u32 vf)1057{1058 struct net_device *dev = adapter->netdev;1059 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];1060 unsigned int default_tc = 0;1061 u8 num_tcs = adapter->hw_tcs;1062 1063 /* verify the PF is supporting the correct APIs */1064 switch (adapter->vfinfo[vf].vf_api) {1065 case ixgbe_mbox_api_20:1066 case ixgbe_mbox_api_11:1067 case ixgbe_mbox_api_12:1068 case ixgbe_mbox_api_13:1069 case ixgbe_mbox_api_14:1070 break;1071 default:1072 return -1;1073 }1074 1075 /* only allow 1 Tx queue for bandwidth limiting */1076 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);1077 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);1078 1079 /* if TCs > 1 determine which TC belongs to default user priority */1080 if (num_tcs > 1)1081 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);1082 1083 /* notify VF of need for VLAN tag stripping, and correct queue */1084 if (num_tcs)1085 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;1086 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)1087 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;1088 else1089 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;1090 1091 /* notify VF of default queue */1092 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;1093 1094 return 0;1095}1096 1097static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)1098{1099 u32 i, j;1100 u32 *out_buf = &msgbuf[1];1101 const u8 *reta = adapter->rss_indir_tbl;1102 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);1103 1104 /* Check if operation is permitted */1105 if (!adapter->vfinfo[vf].rss_query_enabled)1106 return -EPERM;1107 1108 /* verify the PF is supporting the correct API */1109 switch (adapter->vfinfo[vf].vf_api) {1110 case ixgbe_mbox_api_14:1111 case ixgbe_mbox_api_13:1112 case ixgbe_mbox_api_12:1113 break;1114 default:1115 return -EOPNOTSUPP;1116 }1117 1118 /* This mailbox command is supported (required) only for 82599 and x5401119 * VFs which support up to 4 RSS queues. Therefore we will compress the1120 * RETA by saving only 2 bits from each entry. This way we will be able1121 * to transfer the whole RETA in a single mailbox operation.1122 */1123 for (i = 0; i < reta_size / 16; i++) {1124 out_buf[i] = 0;1125 for (j = 0; j < 16; j++)1126 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);1127 }1128 1129 return 0;1130}1131 1132static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,1133 u32 *msgbuf, u32 vf)1134{1135 u32 *rss_key = &msgbuf[1];1136 1137 /* Check if the operation is permitted */1138 if (!adapter->vfinfo[vf].rss_query_enabled)1139 return -EPERM;1140 1141 /* verify the PF is supporting the correct API */1142 switch (adapter->vfinfo[vf].vf_api) {1143 case ixgbe_mbox_api_14:1144 case ixgbe_mbox_api_13:1145 case ixgbe_mbox_api_12:1146 break;1147 default:1148 return -EOPNOTSUPP;1149 }1150 1151 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);1152 1153 return 0;1154}1155 1156static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,1157 u32 *msgbuf, u32 vf)1158{1159 struct ixgbe_hw *hw = &adapter->hw;1160 int xcast_mode = msgbuf[1];1161 u32 vmolr, fctrl, disable, enable;1162 1163 /* verify the PF is supporting the correct APIs */1164 switch (adapter->vfinfo[vf].vf_api) {1165 case ixgbe_mbox_api_12:1166 /* promisc introduced in 1.3 version */1167 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)1168 return -EOPNOTSUPP;1169 fallthrough;1170 case ixgbe_mbox_api_13:1171 case ixgbe_mbox_api_14:1172 break;1173 default:1174 return -EOPNOTSUPP;1175 }1176 1177 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&1178 !adapter->vfinfo[vf].trusted) {1179 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;1180 }1181 1182 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)1183 goto out;1184 1185 switch (xcast_mode) {1186 case IXGBEVF_XCAST_MODE_NONE:1187 disable = IXGBE_VMOLR_ROMPE |1188 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;1189 enable = IXGBE_VMOLR_BAM;1190 break;1191 case IXGBEVF_XCAST_MODE_MULTI:1192 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;1193 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;1194 break;1195 case IXGBEVF_XCAST_MODE_ALLMULTI:1196 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;1197 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;1198 break;1199 case IXGBEVF_XCAST_MODE_PROMISC:1200 if (hw->mac.type <= ixgbe_mac_82599EB)1201 return -EOPNOTSUPP;1202 1203 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);1204 if (!(fctrl & IXGBE_FCTRL_UPE)) {1205 /* VF promisc requires PF in promisc */1206 e_warn(drv,1207 "Enabling VF promisc requires PF in promisc\n");1208 return -EPERM;1209 }1210 1211 disable = IXGBE_VMOLR_VPE;1212 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |1213 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE;1214 break;1215 default:1216 return -EOPNOTSUPP;1217 }1218 1219 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));1220 vmolr &= ~disable;1221 vmolr |= enable;1222 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);1223 1224 adapter->vfinfo[vf].xcast_mode = xcast_mode;1225 1226out:1227 msgbuf[1] = xcast_mode;1228 1229 return 0;1230}1231 1232static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter,1233 u32 *msgbuf, u32 vf)1234{1235 u32 *link_state = &msgbuf[1];1236 1237 /* verify the PF is supporting the correct API */1238 switch (adapter->vfinfo[vf].vf_api) {1239 case ixgbe_mbox_api_12:1240 case ixgbe_mbox_api_13:1241 case ixgbe_mbox_api_14:1242 break;1243 default:1244 return -EOPNOTSUPP;1245 }1246 1247 *link_state = adapter->vfinfo[vf].link_enable;1248 1249 return 0;1250}1251 1252static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)1253{1254 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;1255 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];1256 struct ixgbe_hw *hw = &adapter->hw;1257 int retval;1258 1259 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);1260 1261 if (retval) {1262 pr_err("Error receiving message from VF\n");1263 return retval;1264 }1265 1266 /* this is a message we already processed, do nothing */1267 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))1268 return 0;1269 1270 /* flush the ack before we write any messages back */1271 IXGBE_WRITE_FLUSH(hw);1272 1273 if (msgbuf[0] == IXGBE_VF_RESET)1274 return ixgbe_vf_reset_msg(adapter, vf);1275 1276 /*1277 * until the vf completes a virtual function reset it should not be1278 * allowed to start any configuration.1279 */1280 if (!adapter->vfinfo[vf].clear_to_send) {1281 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;1282 ixgbe_write_mbx(hw, msgbuf, 1, vf);1283 return 0;1284 }1285 1286 switch ((msgbuf[0] & 0xFFFF)) {1287 case IXGBE_VF_SET_MAC_ADDR:1288 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);1289 break;1290 case IXGBE_VF_SET_MULTICAST:1291 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);1292 break;1293 case IXGBE_VF_SET_VLAN:1294 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);1295 break;1296 case IXGBE_VF_SET_LPE:1297 retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf);1298 break;1299 case IXGBE_VF_SET_MACVLAN:1300 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);1301 break;1302 case IXGBE_VF_API_NEGOTIATE:1303 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);1304 break;1305 case IXGBE_VF_GET_QUEUES:1306 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);1307 break;1308 case IXGBE_VF_GET_RETA:1309 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);1310 break;1311 case IXGBE_VF_GET_RSS_KEY:1312 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);1313 break;1314 case IXGBE_VF_UPDATE_XCAST_MODE:1315 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);1316 break;1317 case IXGBE_VF_GET_LINK_STATE:1318 retval = ixgbe_get_vf_link_state(adapter, msgbuf, vf);1319 break;1320 case IXGBE_VF_IPSEC_ADD:1321 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);1322 break;1323 case IXGBE_VF_IPSEC_DEL:1324 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);1325 break;1326 default:1327 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);1328 retval = -EIO;1329 break;1330 }1331 1332 /* notify the VF of the results of what it sent us */1333 if (retval)1334 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;1335 else1336 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;1337 1338 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;1339 1340 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);1341 1342 return retval;1343}1344 1345static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)1346{1347 struct ixgbe_hw *hw = &adapter->hw;1348 u32 msg = IXGBE_VT_MSGTYPE_NACK;1349 1350 /* if device isn't clear to send it shouldn't be reading either */1351 if (!adapter->vfinfo[vf].clear_to_send)1352 ixgbe_write_mbx(hw, &msg, 1, vf);1353}1354 1355void ixgbe_msg_task(struct ixgbe_adapter *adapter)1356{1357 struct ixgbe_hw *hw = &adapter->hw;1358 unsigned long flags;1359 u32 vf;1360 1361 spin_lock_irqsave(&adapter->vfs_lock, flags);1362 for (vf = 0; vf < adapter->num_vfs; vf++) {1363 /* process any reset requests */1364 if (!ixgbe_check_for_rst(hw, vf))1365 ixgbe_vf_reset_event(adapter, vf);1366 1367 /* process any messages pending */1368 if (!ixgbe_check_for_msg(hw, vf))1369 ixgbe_rcv_msg_from_vf(adapter, vf);1370 1371 /* process any acks */1372 if (!ixgbe_check_for_ack(hw, vf))1373 ixgbe_rcv_ack_from_vf(adapter, vf);1374 }1375 spin_unlock_irqrestore(&adapter->vfs_lock, flags);1376}1377 1378static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)1379{1380 struct ixgbe_hw *hw = &adapter->hw;1381 u32 ping;1382 1383 ping = IXGBE_PF_CONTROL_MSG;1384 if (adapter->vfinfo[vf].clear_to_send)1385 ping |= IXGBE_VT_MSGTYPE_CTS;1386 ixgbe_write_mbx(hw, &ping, 1, vf);1387}1388 1389void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)1390{1391 struct ixgbe_hw *hw = &adapter->hw;1392 u32 ping;1393 int i;1394 1395 for (i = 0 ; i < adapter->num_vfs; i++) {1396 ping = IXGBE_PF_CONTROL_MSG;1397 if (adapter->vfinfo[i].clear_to_send)1398 ping |= IXGBE_VT_MSGTYPE_CTS;1399 ixgbe_write_mbx(hw, &ping, 1, i);1400 }1401}1402 1403/**1404 * ixgbe_set_all_vfs - update vfs queues1405 * @adapter: Pointer to adapter struct1406 *1407 * Update setting transmit and receive queues for all vfs1408 **/1409void ixgbe_set_all_vfs(struct ixgbe_adapter *adapter)1410{1411 int i;1412 1413 for (i = 0 ; i < adapter->num_vfs; i++)1414 ixgbe_set_vf_link_state(adapter, i,1415 adapter->vfinfo[i].link_state);1416}1417 1418int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)1419{1420 struct ixgbe_adapter *adapter = netdev_priv(netdev);1421 int retval;1422 1423 if (vf >= adapter->num_vfs)1424 return -EINVAL;1425 1426 if (is_valid_ether_addr(mac)) {1427 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",1428 mac, vf);1429 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");1430 1431 retval = ixgbe_set_vf_mac(adapter, vf, mac);1432 if (retval >= 0) {1433 adapter->vfinfo[vf].pf_set_mac = true;1434 1435 if (test_bit(__IXGBE_DOWN, &adapter->state)) {1436 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");1437 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");1438 }1439 } else {1440 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");1441 }1442 } else if (is_zero_ether_addr(mac)) {1443 unsigned char *vf_mac_addr =1444 adapter->vfinfo[vf].vf_mac_addresses;1445 1446 /* nothing to do */1447 if (is_zero_ether_addr(vf_mac_addr))1448 return 0;1449 1450 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);1451 1452 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);1453 if (retval >= 0) {1454 adapter->vfinfo[vf].pf_set_mac = false;1455 memcpy(vf_mac_addr, mac, ETH_ALEN);1456 } else {1457 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");1458 }1459 } else {1460 retval = -EINVAL;1461 }1462 1463 return retval;1464}1465 1466static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,1467 u16 vlan, u8 qos)1468{1469 struct ixgbe_hw *hw = &adapter->hw;1470 int err;1471 1472 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);1473 if (err)1474 goto out;1475 1476 /* Revoke tagless access via VLAN 0 */1477 ixgbe_set_vf_vlan(adapter, false, 0, vf);1478 1479 ixgbe_set_vmvir(adapter, vlan, qos, vf);1480 ixgbe_set_vmolr(hw, vf, false);1481 1482 /* enable hide vlan on X550 */1483 if (hw->mac.type >= ixgbe_mac_X550)1484 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |1485 IXGBE_QDE_HIDE_VLAN);1486 1487 adapter->vfinfo[vf].pf_vlan = vlan;1488 adapter->vfinfo[vf].pf_qos = qos;1489 dev_info(&adapter->pdev->dev,1490 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);1491 if (test_bit(__IXGBE_DOWN, &adapter->state)) {1492 dev_warn(&adapter->pdev->dev,1493 "The VF VLAN has been set, but the PF device is not up.\n");1494 dev_warn(&adapter->pdev->dev,1495 "Bring the PF device up before attempting to use the VF device.\n");1496 }1497 1498out:1499 return err;1500}1501 1502static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)1503{1504 struct ixgbe_hw *hw = &adapter->hw;1505 int err;1506 1507 err = ixgbe_set_vf_vlan(adapter, false,1508 adapter->vfinfo[vf].pf_vlan, vf);1509 /* Restore tagless access via VLAN 0 */1510 ixgbe_set_vf_vlan(adapter, true, 0, vf);1511 ixgbe_clear_vmvir(adapter, vf);1512 ixgbe_set_vmolr(hw, vf, true);1513 1514 /* disable hide VLAN on X550 */1515 if (hw->mac.type >= ixgbe_mac_X550)1516 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);1517 1518 adapter->vfinfo[vf].pf_vlan = 0;1519 adapter->vfinfo[vf].pf_qos = 0;1520 1521 return err;1522}1523 1524int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,1525 u8 qos, __be16 vlan_proto)1526{1527 int err = 0;1528 struct ixgbe_adapter *adapter = netdev_priv(netdev);1529 1530 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))1531 return -EINVAL;1532 if (vlan_proto != htons(ETH_P_8021Q))1533 return -EPROTONOSUPPORT;1534 if (vlan || qos) {1535 /* Check if there is already a port VLAN set, if so1536 * we have to delete the old one first before we1537 * can set the new one. The usage model had1538 * previously assumed the user would delete the1539 * old port VLAN before setting a new one but this1540 * is not necessarily the case.1541 */1542 if (adapter->vfinfo[vf].pf_vlan)1543 err = ixgbe_disable_port_vlan(adapter, vf);1544 if (err)1545 goto out;1546 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);1547 } else {1548 err = ixgbe_disable_port_vlan(adapter, vf);1549 }1550 1551out:1552 return err;1553}1554 1555int ixgbe_link_mbps(struct ixgbe_adapter *adapter)1556{1557 switch (adapter->link_speed) {1558 case IXGBE_LINK_SPEED_100_FULL:1559 return 100;1560 case IXGBE_LINK_SPEED_1GB_FULL:1561 return 1000;1562 case IXGBE_LINK_SPEED_10GB_FULL:1563 return 10000;1564 default:1565 return 0;1566 }1567}1568 1569static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)1570{1571 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];1572 struct ixgbe_hw *hw = &adapter->hw;1573 u32 bcnrc_val = 0;1574 u16 queue, queues_per_pool;1575 u16 tx_rate = adapter->vfinfo[vf].tx_rate;1576 1577 if (tx_rate) {1578 /* start with base link speed value */1579 bcnrc_val = adapter->vf_rate_link_speed;1580 1581 /* Calculate the rate factor values to set */1582 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;1583 bcnrc_val /= tx_rate;1584 1585 /* clear everything but the rate factor */1586 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |1587 IXGBE_RTTBCNRC_RF_DEC_MASK;1588 1589 /* enable the rate scheduler */1590 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;1591 }1592 1593 /*1594 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM1595 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported1596 * and 0x004 otherwise.1597 */1598 switch (hw->mac.type) {1599 case ixgbe_mac_82599EB:1600 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);1601 break;1602 case ixgbe_mac_X540:1603 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);1604 break;1605 default:1606 break;1607 }1608 1609 /* determine how many queues per pool based on VMDq mask */1610 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);1611 1612 /* write value for all Tx queues belonging to VF */1613 for (queue = 0; queue < queues_per_pool; queue++) {1614 unsigned int reg_idx = (vf * queues_per_pool) + queue;1615 1616 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);1617 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);1618 }1619}1620 1621void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)1622{1623 int i;1624 1625 /* VF Tx rate limit was not set */1626 if (!adapter->vf_rate_link_speed)1627 return;1628 1629 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {1630 adapter->vf_rate_link_speed = 0;1631 dev_info(&adapter->pdev->dev,1632 "Link speed has been changed. VF Transmit rate is disabled\n");1633 }1634 1635 for (i = 0; i < adapter->num_vfs; i++) {1636 if (!adapter->vf_rate_link_speed)1637 adapter->vfinfo[i].tx_rate = 0;1638 1639 ixgbe_set_vf_rate_limit(adapter, i);1640 }1641}1642 1643int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,1644 int max_tx_rate)1645{1646 struct ixgbe_adapter *adapter = netdev_priv(netdev);1647 int link_speed;1648 1649 /* verify VF is active */1650 if (vf >= adapter->num_vfs)1651 return -EINVAL;1652 1653 /* verify link is up */1654 if (!adapter->link_up)1655 return -EINVAL;1656 1657 /* verify we are linked at 10Gbps */1658 link_speed = ixgbe_link_mbps(adapter);1659 if (link_speed != 10000)1660 return -EINVAL;1661 1662 if (min_tx_rate)1663 return -EINVAL;1664 1665 /* rate limit cannot be less than 10Mbs or greater than link speed */1666 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))1667 return -EINVAL;1668 1669 /* store values */1670 adapter->vf_rate_link_speed = link_speed;1671 adapter->vfinfo[vf].tx_rate = max_tx_rate;1672 1673 /* update hardware configuration */1674 ixgbe_set_vf_rate_limit(adapter, vf);1675 1676 return 0;1677}1678 1679int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)1680{1681 struct ixgbe_adapter *adapter = netdev_priv(netdev);1682 struct ixgbe_hw *hw = &adapter->hw;1683 1684 if (vf >= adapter->num_vfs)1685 return -EINVAL;1686 1687 adapter->vfinfo[vf].spoofchk_enabled = setting;1688 1689 /* configure MAC spoofing */1690 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);1691 1692 /* configure VLAN spoofing */1693 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);1694 1695 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be1696 * calling set_ethertype_anti_spoofing for each VF in loop below1697 */1698 if (hw->mac.ops.set_ethertype_anti_spoofing) {1699 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),1700 (IXGBE_ETQF_FILTER_EN |1701 IXGBE_ETQF_TX_ANTISPOOF |1702 ETH_P_LLDP));1703 1704 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),1705 (IXGBE_ETQF_FILTER_EN |1706 IXGBE_ETQF_TX_ANTISPOOF |1707 ETH_P_PAUSE));1708 1709 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);1710 }1711 1712 return 0;1713}1714 1715/**1716 * ixgbe_set_vf_link_state - Set link state1717 * @adapter: Pointer to adapter struct1718 * @vf: VF identifier1719 * @state: required link state1720 *1721 * Set a link force state on/off a single vf1722 **/1723void ixgbe_set_vf_link_state(struct ixgbe_adapter *adapter, int vf, int state)1724{1725 adapter->vfinfo[vf].link_state = state;1726 1727 switch (state) {1728 case IFLA_VF_LINK_STATE_AUTO:1729 if (test_bit(__IXGBE_DOWN, &adapter->state))1730 adapter->vfinfo[vf].link_enable = false;1731 else1732 adapter->vfinfo[vf].link_enable = true;1733 break;1734 case IFLA_VF_LINK_STATE_ENABLE:1735 adapter->vfinfo[vf].link_enable = true;1736 break;1737 case IFLA_VF_LINK_STATE_DISABLE:1738 adapter->vfinfo[vf].link_enable = false;1739 break;1740 }1741 1742 ixgbe_set_vf_rx_tx(adapter, vf);1743 1744 /* restart the VF */1745 adapter->vfinfo[vf].clear_to_send = false;1746 ixgbe_ping_vf(adapter, vf);1747}1748 1749/**1750 * ixgbe_ndo_set_vf_link_state - Set link state1751 * @netdev: network interface device structure1752 * @vf: VF identifier1753 * @state: required link state1754 *1755 * Set the link state of a specified VF, regardless of physical link state1756 **/1757int ixgbe_ndo_set_vf_link_state(struct net_device *netdev, int vf, int state)1758{1759 struct ixgbe_adapter *adapter = netdev_priv(netdev);1760 int ret = 0;1761 1762 if (vf < 0 || vf >= adapter->num_vfs) {1763 dev_err(&adapter->pdev->dev,1764 "NDO set VF link - invalid VF identifier %d\n", vf);1765 return -EINVAL;1766 }1767 1768 switch (state) {1769 case IFLA_VF_LINK_STATE_ENABLE:1770 dev_info(&adapter->pdev->dev,1771 "NDO set VF %d link state %d - not supported\n",1772 vf, state);1773 break;1774 case IFLA_VF_LINK_STATE_DISABLE:1775 dev_info(&adapter->pdev->dev,1776 "NDO set VF %d link state disable\n", vf);1777 ixgbe_set_vf_link_state(adapter, vf, state);1778 break;1779 case IFLA_VF_LINK_STATE_AUTO:1780 dev_info(&adapter->pdev->dev,1781 "NDO set VF %d link state auto\n", vf);1782 ixgbe_set_vf_link_state(adapter, vf, state);1783 break;1784 default:1785 dev_err(&adapter->pdev->dev,1786 "NDO set VF %d - invalid link state %d\n", vf, state);1787 ret = -EINVAL;1788 }1789 1790 return ret;1791}1792 1793int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,1794 bool setting)1795{1796 struct ixgbe_adapter *adapter = netdev_priv(netdev);1797 1798 /* This operation is currently supported only for 82599 and x5401799 * devices.1800 */1801 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||1802 adapter->hw.mac.type >= ixgbe_mac_X550)1803 return -EOPNOTSUPP;1804 1805 if (vf >= adapter->num_vfs)1806 return -EINVAL;1807 1808 adapter->vfinfo[vf].rss_query_enabled = setting;1809 1810 return 0;1811}1812 1813int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)1814{1815 struct ixgbe_adapter *adapter = netdev_priv(netdev);1816 1817 if (vf >= adapter->num_vfs)1818 return -EINVAL;1819 1820 /* nothing to do */1821 if (adapter->vfinfo[vf].trusted == setting)1822 return 0;1823 1824 adapter->vfinfo[vf].trusted = setting;1825 1826 /* reset VF to reconfigure features */1827 adapter->vfinfo[vf].clear_to_send = false;1828 ixgbe_ping_vf(adapter, vf);1829 1830 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");1831 1832 return 0;1833}1834 1835int ixgbe_ndo_get_vf_config(struct net_device *netdev,1836 int vf, struct ifla_vf_info *ivi)1837{1838 struct ixgbe_adapter *adapter = netdev_priv(netdev);1839 if (vf >= adapter->num_vfs)1840 return -EINVAL;1841 ivi->vf = vf;1842 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);1843 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;1844 ivi->min_tx_rate = 0;1845 ivi->vlan = adapter->vfinfo[vf].pf_vlan;1846 ivi->qos = adapter->vfinfo[vf].pf_qos;1847 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;1848 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;1849 ivi->trusted = adapter->vfinfo[vf].trusted;1850 ivi->linkstate = adapter->vfinfo[vf].link_state;1851 return 0;1852}1853