// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 1999 - 2018 Intel Corporation. */ #include #include #include #include #include #include #include #include #include #include #include #ifdef NETIF_F_HW_VLAN_CTAG_TX #include #endif #include "ixgbe.h" #include "ixgbe_type.h" #include "ixgbe_sriov.h" #ifdef CONFIG_PCI_IOV static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter, unsigned int num_vfs) { struct ixgbe_hw *hw = &adapter->hw; struct vf_macvlans *mv_list; int num_vf_macvlans, i; num_vf_macvlans = hw->mac.num_rar_entries - (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs); if (!num_vf_macvlans) return; mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans), GFP_KERNEL); if (mv_list) { /* Initialize list of VF macvlans */ INIT_LIST_HEAD(&adapter->vf_mvs.l); for (i = 0; i < num_vf_macvlans; i++) { mv_list[i].vf = -1; mv_list[i].free = true; list_add(&mv_list[i].l, &adapter->vf_mvs.l); } adapter->mv_list = mv_list; } } static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int num_vfs) { struct ixgbe_hw *hw = &adapter->hw; int i; if (adapter->xdp_prog) { e_warn(probe, "SRIOV is not supported with XDP\n"); return -EINVAL; } /* Enable VMDq flag so device will be set in VM mode */ adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED | IXGBE_FLAG_VMDQ_ENABLED; /* Allocate memory for per VF control structures */ adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage), GFP_KERNEL); if (!adapter->vfinfo) return -ENOMEM; adapter->num_vfs = num_vfs; ixgbe_alloc_vf_macvlans(adapter, num_vfs); adapter->ring_feature[RING_F_VMDQ].offset = num_vfs; /* Initialize default switching mode VEB */ IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); adapter->bridge_mode = BRIDGE_MODE_VEB; /* limit trafffic classes based on VFs enabled */ if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) { adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; } else if (num_vfs < 32) { adapter->dcb_cfg.num_tcs.pg_tcs = 4; adapter->dcb_cfg.num_tcs.pfc_tcs = 4; } else { adapter->dcb_cfg.num_tcs.pg_tcs = 1; adapter->dcb_cfg.num_tcs.pfc_tcs = 1; } /* Disable RSC when in SR-IOV mode */ adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | IXGBE_FLAG2_RSC_ENABLED); for (i = 0; i < num_vfs; i++) { /* enable spoof checking for all VFs */ adapter->vfinfo[i].spoofchk_enabled = true; adapter->vfinfo[i].link_enable = true; /* We support VF RSS querying only for 82599 and x540 * devices at the moment. These devices share RSS * indirection table and RSS hash key with PF therefore * we want to disable the querying by default. */ adapter->vfinfo[i].rss_query_enabled = false; /* Untrust all VFs */ adapter->vfinfo[i].trusted = false; /* set the default xcast mode */ adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE; } e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs); return 0; } /** * ixgbe_get_vfs - Find and take references to all vf devices * @adapter: Pointer to adapter struct */ static void ixgbe_get_vfs(struct ixgbe_adapter *adapter) { struct pci_dev *pdev = adapter->pdev; u16 vendor = pdev->vendor; struct pci_dev *vfdev; int vf = 0; u16 vf_id; int pos; pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); if (!pos) return; pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id); vfdev = pci_get_device(vendor, vf_id, NULL); for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) { if (!vfdev->is_virtfn) continue; if (vfdev->physfn != pdev) continue; if (vf >= adapter->num_vfs) continue; pci_dev_get(vfdev); adapter->vfinfo[vf].vfdev = vfdev; ++vf; } } /* Note this function is called when the user wants to enable SR-IOV * VFs using the now deprecated module parameter */ void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs) { int pre_existing_vfs = 0; unsigned int num_vfs; pre_existing_vfs = pci_num_vf(adapter->pdev); if (!pre_existing_vfs && !max_vfs) return; /* If there are pre-existing VFs then we have to force * use of that many - over ride any module parameter value. * This may result from the user unloading the PF driver * while VFs were assigned to guest VMs or because the VFs * have been created via the new PCI SR-IOV sysfs interface. */ if (pre_existing_vfs) { num_vfs = pre_existing_vfs; dev_warn(&adapter->pdev->dev, "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n"); } else { int err; /* * The 82599 supports up to 64 VFs per physical function * but this implementation limits allocation to 63 so that * basic networking resources are still available to the * physical function. If the user requests greater than * 63 VFs then it is an error - reset to default of zero. */ num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT); err = pci_enable_sriov(adapter->pdev, num_vfs); if (err) { e_err(probe, "Failed to enable PCI sriov: %d\n", err); return; } } if (!__ixgbe_enable_sriov(adapter, num_vfs)) { ixgbe_get_vfs(adapter); return; } /* If we have gotten to this point then there is no memory available * to manage the VF devices - print message and bail. */ e_err(probe, "Unable to allocate memory for VF Data Storage - " "SRIOV disabled\n"); ixgbe_disable_sriov(adapter); } #endif /* #ifdef CONFIG_PCI_IOV */ int ixgbe_disable_sriov(struct ixgbe_adapter *adapter) { unsigned int num_vfs = adapter->num_vfs, vf; int rss; /* set num VFs to 0 to prevent access to vfinfo */ adapter->num_vfs = 0; /* put the reference to all of the vf devices */ for (vf = 0; vf < num_vfs; ++vf) { struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; if (!vfdev) continue; adapter->vfinfo[vf].vfdev = NULL; pci_dev_put(vfdev); } /* free VF control structures */ kfree(adapter->vfinfo); adapter->vfinfo = NULL; /* free macvlan list */ kfree(adapter->mv_list); adapter->mv_list = NULL; /* if SR-IOV is already disabled then there is nothing to do */ if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) return 0; #ifdef CONFIG_PCI_IOV /* * If our VFs are assigned we cannot shut down SR-IOV * without causing issues, so just leave the hardware * available but disabled */ if (pci_vfs_assigned(adapter->pdev)) { e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n"); return -EPERM; } /* disable iov and allow time for transactions to clear */ pci_disable_sriov(adapter->pdev); #endif /* Disable VMDq flag so device will be set in VM mode */ if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) { adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED; adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus()); } else { rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus()); } adapter->ring_feature[RING_F_VMDQ].offset = 0; adapter->ring_feature[RING_F_RSS].limit = rss; /* take a breather then clean up driver data */ msleep(100); return 0; } static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs) { #ifdef CONFIG_PCI_IOV struct ixgbe_adapter *adapter = pci_get_drvdata(dev); int pre_existing_vfs = pci_num_vf(dev); int err = 0, num_rx_pools, i, limit; u8 num_tc; if (pre_existing_vfs && pre_existing_vfs != num_vfs) err = ixgbe_disable_sriov(adapter); else if (pre_existing_vfs && pre_existing_vfs == num_vfs) return num_vfs; if (err) return err; /* While the SR-IOV capability structure reports total VFs to be 64, * we limit the actual number allocated as below based on two factors. * Num_TCs MAX_VFs * 1 63 * <=4 31 * >4 15 * First, we reserve some transmit/receive resources for the PF. * Second, VMDQ also uses the same pools that SR-IOV does. We need to * account for this, so that we don't accidentally allocate more VFs * than we have available pools. The PCI bus driver already checks for * other values out of range. */ num_tc = adapter->hw_tcs; num_rx_pools = bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools); limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC : (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC; if (num_vfs > (limit - num_rx_pools)) { e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n", num_tc, num_rx_pools - 1, limit - num_rx_pools); return -EPERM; } err = __ixgbe_enable_sriov(adapter, num_vfs); if (err) return err; for (i = 0; i < num_vfs; i++) ixgbe_vf_configuration(dev, (i | 0x10000000)); /* reset before enabling SRIOV to avoid mailbox issues */ ixgbe_sriov_reinit(adapter); err = pci_enable_sriov(dev, num_vfs); if (err) { e_dev_warn("Failed to enable PCI sriov: %d\n", err); return err; } ixgbe_get_vfs(adapter); return num_vfs; #else return 0; #endif } static int ixgbe_pci_sriov_disable(struct pci_dev *dev) { struct ixgbe_adapter *adapter = pci_get_drvdata(dev); int err; #ifdef CONFIG_PCI_IOV u32 current_flags = adapter->flags; int prev_num_vf = pci_num_vf(dev); #endif err = ixgbe_disable_sriov(adapter); /* Only reinit if no error and state changed */ #ifdef CONFIG_PCI_IOV if (!err && (current_flags != adapter->flags || prev_num_vf != pci_num_vf(dev))) ixgbe_sriov_reinit(adapter); #endif return err; } int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs) { if (num_vfs == 0) return ixgbe_pci_sriov_disable(dev); else return ixgbe_pci_sriov_enable(dev, num_vfs); } static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; u16 *hash_list = (u16 *)&msgbuf[1]; struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; struct ixgbe_hw *hw = &adapter->hw; int i; u32 vector_bit; u32 vector_reg; u32 mta_reg; u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); /* only so many hash values supported */ entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES); /* * salt away the number of multi cast addresses assigned * to this VF for later use to restore when the PF multi cast * list changes */ vfinfo->num_vf_mc_hashes = entries; /* * VFs are limited to using the MTA hash table for their multicast * addresses */ for (i = 0; i < entries; i++) { vfinfo->vf_mc_hashes[i] = hash_list[i]; } for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) { vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F; vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F; mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); mta_reg |= BIT(vector_bit); IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); } vmolr |= IXGBE_VMOLR_ROMPE; IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); return 0; } #ifdef CONFIG_PCI_IOV void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct vf_data_storage *vfinfo; int i, j; u32 vector_bit; u32 vector_reg; u32 mta_reg; for (i = 0; i < adapter->num_vfs; i++) { u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i)); vfinfo = &adapter->vfinfo[i]; for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) { hw->addr_ctrl.mta_in_use++; vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F; vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F; mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg)); mta_reg |= BIT(vector_bit); IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg); } if (vfinfo->num_vf_mc_hashes) vmolr |= IXGBE_VMOLR_ROMPE; else vmolr &= ~IXGBE_VMOLR_ROMPE; IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); } /* Restore any VF macvlans */ ixgbe_full_sync_mac_table(adapter); } #endif static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid, u32 vf) { struct ixgbe_hw *hw = &adapter->hw; int err; /* If VLAN overlaps with one the PF is currently monitoring make * sure that we are able to allocate a VLVF entry. This may be * redundant but it guarantees PF will maintain visibility to * the VLAN. */ if (add && test_bit(vid, adapter->active_vlans)) { err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false); if (err) return err; } err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false); if (add && !err) return err; /* If we failed to add the VF VLAN or we are removing the VF VLAN * we may need to drop the PF pool bit in order to allow us to free * up the VLVF resources. */ if (test_bit(vid, adapter->active_vlans) || (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) ixgbe_update_pf_promisc_vlvf(adapter, vid); return err; } static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf) { struct ixgbe_hw *hw = &adapter->hw; u32 max_frs; if (max_frame < ETH_MIN_MTU || max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) { e_err(drv, "VF max_frame %d out of range\n", max_frame); return -EINVAL; } /* * For 82599EB we have to keep all PFs and VFs operating with * the same max_frame value in order to avoid sending an oversize * frame to a VF. In order to guarantee this is handled correctly * for all cases we have several special exceptions to take into * account before we can enable the VF for receive */ if (adapter->hw.mac.type == ixgbe_mac_82599EB) { struct net_device *dev = adapter->netdev; int pf_max_frame = dev->mtu + ETH_HLEN; u32 reg_offset, vf_shift, vfre; s32 err = 0; #ifdef CONFIG_FCOE if (dev->features & NETIF_F_FCOE_MTU) pf_max_frame = max_t(int, pf_max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); #endif /* CONFIG_FCOE */ switch (adapter->vfinfo[vf].vf_api) { case ixgbe_mbox_api_11: case ixgbe_mbox_api_12: case ixgbe_mbox_api_13: case ixgbe_mbox_api_14: /* Version 1.1 supports jumbo frames on VFs if PF has * jumbo frames enabled which means legacy VFs are * disabled */ if (pf_max_frame > ETH_FRAME_LEN) break; fallthrough; default: /* If the PF or VF are running w/ jumbo frames enabled * we need to shut down the VF Rx path as we cannot * support jumbo frames on legacy VFs */ if ((pf_max_frame > ETH_FRAME_LEN) || (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) err = -EINVAL; break; } /* determine VF receive enable location */ vf_shift = vf % 32; reg_offset = vf / 32; /* enable or disable receive depending on error */ vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); if (err) vfre &= ~BIT(vf_shift); else vfre |= BIT(vf_shift); IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre); if (err) { e_err(drv, "VF max_frame %d out of range\n", max_frame); return err; } } /* pull current max frame size from hardware */ max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); max_frs &= IXGBE_MHADD_MFS_MASK; max_frs >>= IXGBE_MHADD_MFS_SHIFT; if (max_frs < max_frame) { max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT; IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs); } e_info(hw, "VF requests change max MTU to %d\n", max_frame); return 0; } static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe) { u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); vmolr |= IXGBE_VMOLR_BAM; if (aupe) vmolr |= IXGBE_VMOLR_AUPE; else vmolr &= ~IXGBE_VMOLR_AUPE; IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); } static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf) { struct ixgbe_hw *hw = &adapter->hw; IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0); } static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf) { struct ixgbe_hw *hw = &adapter->hw; u32 vlvfb_mask, pool_mask, i; /* create mask for VF and other pools */ pool_mask = ~BIT(VMDQ_P(0) % 32); vlvfb_mask = BIT(vf % 32); /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */ for (i = IXGBE_VLVF_ENTRIES; i--;) { u32 bits[2], vlvfb, vid, vfta, vlvf; u32 word = i * 2 + vf / 32; u32 mask; vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); /* if our bit isn't set we can skip it */ if (!(vlvfb & vlvfb_mask)) continue; /* clear our bit from vlvfb */ vlvfb ^= vlvfb_mask; /* create 64b mask to chedk to see if we should clear VLVF */ bits[word % 2] = vlvfb; bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1)); /* if other pools are present, just remove ourselves */ if (bits[(VMDQ_P(0) / 32) ^ 1] || (bits[VMDQ_P(0) / 32] & pool_mask)) goto update_vlvfb; /* if PF is present, leave VFTA */ if (bits[0] || bits[1]) goto update_vlvf; /* if we cannot determine VLAN just remove ourselves */ vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); if (!vlvf) goto update_vlvfb; vid = vlvf & VLAN_VID_MASK; mask = BIT(vid % 32); /* clear bit from VFTA */ vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32)); if (vfta & mask) IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask); update_vlvf: /* clear POOL selection enable */ IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0); if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) vlvfb = 0; update_vlvfb: /* clear pool bits */ IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb); } } static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter, int vf, int index, unsigned char *mac_addr) { struct vf_macvlans *entry; struct list_head *pos; int retval = 0; if (index <= 1) { list_for_each(pos, &adapter->vf_mvs.l) { entry = list_entry(pos, struct vf_macvlans, l); if (entry->vf == vf) { entry->vf = -1; entry->free = true; entry->is_macvlan = false; ixgbe_del_mac_filter(adapter, entry->vf_macvlan, vf); } } } /* * If index was zero then we were asked to clear the uc list * for the VF. We're done. */ if (!index) return 0; entry = NULL; list_for_each(pos, &adapter->vf_mvs.l) { entry = list_entry(pos, struct vf_macvlans, l); if (entry->free) break; } /* * If we traversed the entire list and didn't find a free entry * then we're out of space on the RAR table. Also entry may * be NULL because the original memory allocation for the list * failed, which is not fatal but does mean we can't support * VF requests for MACVLAN because we couldn't allocate * memory for the list management required. */ if (!entry || !entry->free) return -ENOSPC; retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); if (retval < 0) return retval; entry->free = false; entry->is_macvlan = true; entry->vf = vf; memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN); return 0; } static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf) { struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); u8 num_tcs = adapter->hw_tcs; u32 reg_val; u32 queue; /* remove VLAN filters beloning to this VF */ ixgbe_clear_vf_vlans(adapter, vf); /* add back PF assigned VLAN or VLAN 0 */ ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf); /* reset offloads to defaults */ ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan); /* set outgoing tags for VFs */ if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) { ixgbe_clear_vmvir(adapter, vf); } else { if (vfinfo->pf_qos || !num_tcs) ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, vfinfo->pf_qos, vf); else ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, adapter->default_up, vf); if (vfinfo->spoofchk_enabled) { hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf); hw->mac.ops.set_mac_anti_spoofing(hw, true, vf); } } /* reset multicast table array for vf */ adapter->vfinfo[vf].num_vf_mc_hashes = 0; /* clear any ipsec table info */ ixgbe_ipsec_vf_clear(adapter, vf); /* Flush and reset the mta with the new values */ ixgbe_set_rx_mode(adapter->netdev); ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); ixgbe_set_vf_macvlan(adapter, vf, 0, NULL); /* reset VF api back to unknown */ adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10; /* Restart each queue for given VF */ for (queue = 0; queue < q_per_pool; queue++) { unsigned int reg_idx = (vf * q_per_pool) + queue; reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx)); /* Re-enabling only configured queues */ if (reg_val) { reg_val |= IXGBE_TXDCTL_ENABLE; IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val); reg_val &= ~IXGBE_TXDCTL_ENABLE; IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val); } } IXGBE_WRITE_FLUSH(hw); } static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf) { struct ixgbe_hw *hw = &adapter->hw; u32 word; /* Clear VF's mailbox memory */ for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++) IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0); IXGBE_WRITE_FLUSH(hw); } static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter, int vf, unsigned char *mac_addr) { s32 retval; ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf); retval = ixgbe_add_mac_filter(adapter, mac_addr, vf); if (retval >= 0) memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN); else eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses); return retval; } int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask) { struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); unsigned int vfn = (event_mask & 0x3f); bool enable = ((event_mask & 0x10000000U) != 0); if (enable) eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses); return 0; } static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf, u32 qde) { struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); int i; for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) { u32 reg; /* flush previous write */ IXGBE_WRITE_FLUSH(hw); /* indicate to hardware that we want to set drop enable */ reg = IXGBE_QDE_WRITE | qde; reg |= i << IXGBE_QDE_IDX_SHIFT; IXGBE_WRITE_REG(hw, IXGBE_QDE, reg); } } /** * ixgbe_set_vf_rx_tx - Set VF rx tx * @adapter: Pointer to adapter struct * @vf: VF identifier * * Set or reset correct transmit and receive for vf **/ static void ixgbe_set_vf_rx_tx(struct ixgbe_adapter *adapter, int vf) { u32 reg_cur_tx, reg_cur_rx, reg_req_tx, reg_req_rx; struct ixgbe_hw *hw = &adapter->hw; u32 reg_offset, vf_shift; vf_shift = vf % 32; reg_offset = vf / 32; reg_cur_tx = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset)); reg_cur_rx = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset)); if (adapter->vfinfo[vf].link_enable) { reg_req_tx = reg_cur_tx | 1 << vf_shift; reg_req_rx = reg_cur_rx | 1 << vf_shift; } else { reg_req_tx = reg_cur_tx & ~(1 << vf_shift); reg_req_rx = reg_cur_rx & ~(1 << vf_shift); } /* The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs. * For more info take a look at ixgbe_set_vf_lpe */ if (adapter->hw.mac.type == ixgbe_mac_82599EB) { struct net_device *dev = adapter->netdev; int pf_max_frame = dev->mtu + ETH_HLEN; #if IS_ENABLED(CONFIG_FCOE) if (dev->features & NETIF_F_FCOE_MTU) pf_max_frame = max_t(int, pf_max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); #endif /* CONFIG_FCOE */ if (pf_max_frame > ETH_FRAME_LEN) reg_req_rx = reg_cur_rx & ~(1 << vf_shift); } /* Enable/Disable particular VF */ if (reg_cur_tx != reg_req_tx) IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg_req_tx); if (reg_cur_rx != reg_req_rx) IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg_req_rx); } static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf) { struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; struct ixgbe_hw *hw = &adapter->hw; unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses; u32 reg, reg_offset, vf_shift; u32 msgbuf[4] = {0, 0, 0, 0}; u8 *addr = (u8 *)(&msgbuf[1]); u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); int i; e_info(probe, "VF Reset msg received from vf %d\n", vf); /* reset the filters for the device */ ixgbe_vf_reset_event(adapter, vf); ixgbe_vf_clear_mbx(adapter, vf); /* set vf mac address */ if (!is_zero_ether_addr(vf_mac)) ixgbe_set_vf_mac(adapter, vf, vf_mac); vf_shift = vf % 32; reg_offset = vf / 32; /* force drop enable for all VF Rx queues */ reg = IXGBE_QDE_ENABLE; if (adapter->vfinfo[vf].pf_vlan) reg |= IXGBE_QDE_HIDE_VLAN; ixgbe_write_qde(adapter, vf, reg); ixgbe_set_vf_rx_tx(adapter, vf); /* enable VF mailbox for further messages */ adapter->vfinfo[vf].clear_to_send = true; /* Enable counting of spoofed packets in the SSVPC register */ reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset)); reg |= BIT(vf_shift); IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg); /* * Reset the VFs TDWBAL and TDWBAH registers * which are not cleared by an FLR */ for (i = 0; i < q_per_pool; i++) { IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0); IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0); } /* reply to reset with ack and vf mac address */ msgbuf[0] = IXGBE_VF_RESET; if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) { msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; memcpy(addr, vf_mac, ETH_ALEN); } else { msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; } /* * Piggyback the multicast filter type so VF can compute the * correct vectors */ msgbuf[3] = hw->mac.mc_filter_type; ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf); return 0; } static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { u8 *new_mac = ((u8 *)(&msgbuf[1])); if (!is_valid_ether_addr(new_mac)) { e_warn(drv, "VF %d attempted to set invalid mac\n", vf); return -1; } if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) { e_warn(drv, "VF %d attempted to override administratively set MAC address\n" "Reload the VF driver to resume operations\n", vf); return -1; } return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0; } static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK); u8 tcs = adapter->hw_tcs; if (adapter->vfinfo[vf].pf_vlan || tcs) { e_warn(drv, "VF %d attempted to override administratively set VLAN configuration\n" "Reload the VF driver to resume operations\n", vf); return -1; } /* VLAN 0 is a special case, don't allow it to be removed */ if (!vid && !add) return 0; return ixgbe_set_vf_vlan(adapter, add, vid, vf); } static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { u8 *new_mac = ((u8 *)(&msgbuf[1])); int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; int err; if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted && index > 0) { e_warn(drv, "VF %d requested MACVLAN filter but is administratively denied\n", vf); return -1; } /* An non-zero index indicates the VF is setting a filter */ if (index) { if (!is_valid_ether_addr(new_mac)) { e_warn(drv, "VF %d attempted to set invalid mac\n", vf); return -1; } /* * If the VF is allowed to set MAC filters then turn off * anti-spoofing to avoid false positives. */ if (adapter->vfinfo[vf].spoofchk_enabled) { struct ixgbe_hw *hw = &adapter->hw; hw->mac.ops.set_mac_anti_spoofing(hw, false, vf); hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf); } } err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac); if (err == -ENOSPC) e_warn(drv, "VF %d has requested a MACVLAN filter but there is no space for it\n", vf); return err < 0; } static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { int api = msgbuf[1]; switch (api) { case ixgbe_mbox_api_10: case ixgbe_mbox_api_11: case ixgbe_mbox_api_12: case ixgbe_mbox_api_13: case ixgbe_mbox_api_14: adapter->vfinfo[vf].vf_api = api; return 0; default: break; } e_info(drv, "VF %d requested invalid api version %u\n", vf, api); return -1; } static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { struct net_device *dev = adapter->netdev; struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; unsigned int default_tc = 0; u8 num_tcs = adapter->hw_tcs; /* verify the PF is supporting the correct APIs */ switch (adapter->vfinfo[vf].vf_api) { case ixgbe_mbox_api_20: case ixgbe_mbox_api_11: case ixgbe_mbox_api_12: case ixgbe_mbox_api_13: case ixgbe_mbox_api_14: break; default: return -1; } /* only allow 1 Tx queue for bandwidth limiting */ msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask); /* if TCs > 1 determine which TC belongs to default user priority */ if (num_tcs > 1) default_tc = netdev_get_prio_tc_map(dev, adapter->default_up); /* notify VF of need for VLAN tag stripping, and correct queue */ if (num_tcs) msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs; else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos) msgbuf[IXGBE_VF_TRANS_VLAN] = 1; else msgbuf[IXGBE_VF_TRANS_VLAN] = 0; /* notify VF of default queue */ msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc; return 0; } static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { u32 i, j; u32 *out_buf = &msgbuf[1]; const u8 *reta = adapter->rss_indir_tbl; u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter); /* Check if operation is permitted */ if (!adapter->vfinfo[vf].rss_query_enabled) return -EPERM; /* verify the PF is supporting the correct API */ switch (adapter->vfinfo[vf].vf_api) { case ixgbe_mbox_api_14: case ixgbe_mbox_api_13: case ixgbe_mbox_api_12: break; default: return -EOPNOTSUPP; } /* This mailbox command is supported (required) only for 82599 and x540 * VFs which support up to 4 RSS queues. Therefore we will compress the * RETA by saving only 2 bits from each entry. This way we will be able * to transfer the whole RETA in a single mailbox operation. */ for (i = 0; i < reta_size / 16; i++) { out_buf[i] = 0; for (j = 0; j < 16; j++) out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j); } return 0; } static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { u32 *rss_key = &msgbuf[1]; /* Check if the operation is permitted */ if (!adapter->vfinfo[vf].rss_query_enabled) return -EPERM; /* verify the PF is supporting the correct API */ switch (adapter->vfinfo[vf].vf_api) { case ixgbe_mbox_api_14: case ixgbe_mbox_api_13: case ixgbe_mbox_api_12: break; default: return -EOPNOTSUPP; } memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE); return 0; } static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { struct ixgbe_hw *hw = &adapter->hw; int xcast_mode = msgbuf[1]; u32 vmolr, fctrl, disable, enable; /* verify the PF is supporting the correct APIs */ switch (adapter->vfinfo[vf].vf_api) { case ixgbe_mbox_api_12: /* promisc introduced in 1.3 version */ if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) return -EOPNOTSUPP; fallthrough; case ixgbe_mbox_api_13: case ixgbe_mbox_api_14: break; default: return -EOPNOTSUPP; } if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI && !adapter->vfinfo[vf].trusted) { xcast_mode = IXGBEVF_XCAST_MODE_MULTI; } if (adapter->vfinfo[vf].xcast_mode == xcast_mode) goto out; switch (xcast_mode) { case IXGBEVF_XCAST_MODE_NONE: disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; enable = 0; break; case IXGBEVF_XCAST_MODE_MULTI: disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE; break; case IXGBEVF_XCAST_MODE_ALLMULTI: disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE; break; case IXGBEVF_XCAST_MODE_PROMISC: if (hw->mac.type <= ixgbe_mac_82599EB) return -EOPNOTSUPP; fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); if (!(fctrl & IXGBE_FCTRL_UPE)) { /* VF promisc requires PF in promisc */ e_warn(drv, "Enabling VF promisc requires PF in promisc\n"); return -EPERM; } disable = 0; enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; break; default: return -EOPNOTSUPP; } vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf)); vmolr &= ~disable; vmolr |= enable; IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr); adapter->vfinfo[vf].xcast_mode = xcast_mode; out: msgbuf[1] = xcast_mode; return 0; } static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) { u32 *link_state = &msgbuf[1]; /* verify the PF is supporting the correct API */ switch (adapter->vfinfo[vf].vf_api) { case ixgbe_mbox_api_12: case ixgbe_mbox_api_13: case ixgbe_mbox_api_14: break; default: return -EOPNOTSUPP; } *link_state = adapter->vfinfo[vf].link_enable; return 0; } static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) { u32 mbx_size = IXGBE_VFMAILBOX_SIZE; u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; struct ixgbe_hw *hw = &adapter->hw; s32 retval; retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf); if (retval) { pr_err("Error receiving message from VF\n"); return retval; } /* this is a message we already processed, do nothing */ if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK)) return 0; /* flush the ack before we write any messages back */ IXGBE_WRITE_FLUSH(hw); if (msgbuf[0] == IXGBE_VF_RESET) return ixgbe_vf_reset_msg(adapter, vf); /* * until the vf completes a virtual function reset it should not be * allowed to start any configuration. */ if (!adapter->vfinfo[vf].clear_to_send) { msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; ixgbe_write_mbx(hw, msgbuf, 1, vf); return 0; } switch ((msgbuf[0] & 0xFFFF)) { case IXGBE_VF_SET_MAC_ADDR: retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf); break; case IXGBE_VF_SET_MULTICAST: retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf); break; case IXGBE_VF_SET_VLAN: retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf); break; case IXGBE_VF_SET_LPE: retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf); break; case IXGBE_VF_SET_MACVLAN: retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf); break; case IXGBE_VF_API_NEGOTIATE: retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf); break; case IXGBE_VF_GET_QUEUES: retval = ixgbe_get_vf_queues(adapter, msgbuf, vf); break; case IXGBE_VF_GET_RETA: retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); break; case IXGBE_VF_GET_RSS_KEY: retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); break; case IXGBE_VF_UPDATE_XCAST_MODE: retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf); break; case IXGBE_VF_GET_LINK_STATE: retval = ixgbe_get_vf_link_state(adapter, msgbuf, vf); break; case IXGBE_VF_IPSEC_ADD: retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf); break; case IXGBE_VF_IPSEC_DEL: retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf); break; default: e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); retval = IXGBE_ERR_MBX; break; } /* notify the VF of the results of what it sent us */ if (retval) msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK; else msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK; msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS; ixgbe_write_mbx(hw, msgbuf, mbx_size, vf); return retval; } static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf) { struct ixgbe_hw *hw = &adapter->hw; u32 msg = IXGBE_VT_MSGTYPE_NACK; /* if device isn't clear to send it shouldn't be reading either */ if (!adapter->vfinfo[vf].clear_to_send) ixgbe_write_mbx(hw, &msg, 1, vf); } void ixgbe_msg_task(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 vf; for (vf = 0; vf < adapter->num_vfs; vf++) { /* process any reset requests */ if (!ixgbe_check_for_rst(hw, vf)) ixgbe_vf_reset_event(adapter, vf); /* process any messages pending */ if (!ixgbe_check_for_msg(hw, vf)) ixgbe_rcv_msg_from_vf(adapter, vf); /* process any acks */ if (!ixgbe_check_for_ack(hw, vf)) ixgbe_rcv_ack_from_vf(adapter, vf); } } static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf) { struct ixgbe_hw *hw = &adapter->hw; u32 ping; ping = IXGBE_PF_CONTROL_MSG; if (adapter->vfinfo[vf].clear_to_send) ping |= IXGBE_VT_MSGTYPE_CTS; ixgbe_write_mbx(hw, &ping, 1, vf); } void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 ping; int i; for (i = 0 ; i < adapter->num_vfs; i++) { ping = IXGBE_PF_CONTROL_MSG; if (adapter->vfinfo[i].clear_to_send) ping |= IXGBE_VT_MSGTYPE_CTS; ixgbe_write_mbx(hw, &ping, 1, i); } } /** * ixgbe_set_all_vfs - update vfs queues * @adapter: Pointer to adapter struct * * Update setting transmit and receive queues for all vfs **/ void ixgbe_set_all_vfs(struct ixgbe_adapter *adapter) { int i; for (i = 0 ; i < adapter->num_vfs; i++) ixgbe_set_vf_link_state(adapter, i, adapter->vfinfo[i].link_state); } int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) { struct ixgbe_adapter *adapter = netdev_priv(netdev); s32 retval; if (vf >= adapter->num_vfs) return -EINVAL; if (is_valid_ether_addr(mac)) { dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective."); retval = ixgbe_set_vf_mac(adapter, vf, mac); if (retval >= 0) { adapter->vfinfo[vf].pf_set_mac = true; if (test_bit(__IXGBE_DOWN, &adapter->state)) { dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n"); dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n"); } } else { dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n"); } } else if (is_zero_ether_addr(mac)) { unsigned char *vf_mac_addr = adapter->vfinfo[vf].vf_mac_addresses; /* nothing to do */ if (is_zero_ether_addr(vf_mac_addr)) return 0; dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf); retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf); if (retval >= 0) { adapter->vfinfo[vf].pf_set_mac = false; memcpy(vf_mac_addr, mac, ETH_ALEN); } else { dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n"); } } else { retval = -EINVAL; } return retval; } static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf, u16 vlan, u8 qos) { struct ixgbe_hw *hw = &adapter->hw; int err; err = ixgbe_set_vf_vlan(adapter, true, vlan, vf); if (err) goto out; /* Revoke tagless access via VLAN 0 */ ixgbe_set_vf_vlan(adapter, false, 0, vf); ixgbe_set_vmvir(adapter, vlan, qos, vf); ixgbe_set_vmolr(hw, vf, false); /* enable hide vlan on X550 */ if (hw->mac.type >= ixgbe_mac_X550) ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE | IXGBE_QDE_HIDE_VLAN); adapter->vfinfo[vf].pf_vlan = vlan; adapter->vfinfo[vf].pf_qos = qos; dev_info(&adapter->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); if (test_bit(__IXGBE_DOWN, &adapter->state)) { dev_warn(&adapter->pdev->dev, "The VF VLAN has been set, but the PF device is not up.\n"); dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n"); } out: return err; } static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf) { struct ixgbe_hw *hw = &adapter->hw; int err; err = ixgbe_set_vf_vlan(adapter, false, adapter->vfinfo[vf].pf_vlan, vf); /* Restore tagless access via VLAN 0 */ ixgbe_set_vf_vlan(adapter, true, 0, vf); ixgbe_clear_vmvir(adapter, vf); ixgbe_set_vmolr(hw, vf, true); /* disable hide VLAN on X550 */ if (hw->mac.type >= ixgbe_mac_X550) ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE); adapter->vfinfo[vf].pf_vlan = 0; adapter->vfinfo[vf].pf_qos = 0; return err; } int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos, __be16 vlan_proto) { int err = 0; struct ixgbe_adapter *adapter = netdev_priv(netdev); if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7)) return -EINVAL; if (vlan_proto != htons(ETH_P_8021Q)) return -EPROTONOSUPPORT; if (vlan || qos) { /* Check if there is already a port VLAN set, if so * we have to delete the old one first before we * can set the new one. The usage model had * previously assumed the user would delete the * old port VLAN before setting a new one but this * is not necessarily the case. */ if (adapter->vfinfo[vf].pf_vlan) err = ixgbe_disable_port_vlan(adapter, vf); if (err) goto out; err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos); } else { err = ixgbe_disable_port_vlan(adapter, vf); } out: return err; } int ixgbe_link_mbps(struct ixgbe_adapter *adapter) { switch (adapter->link_speed) { case IXGBE_LINK_SPEED_100_FULL: return 100; case IXGBE_LINK_SPEED_1GB_FULL: return 1000; case IXGBE_LINK_SPEED_10GB_FULL: return 10000; default: return 0; } } static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf) { struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; struct ixgbe_hw *hw = &adapter->hw; u32 bcnrc_val = 0; u16 queue, queues_per_pool; u16 tx_rate = adapter->vfinfo[vf].tx_rate; if (tx_rate) { /* start with base link speed value */ bcnrc_val = adapter->vf_rate_link_speed; /* Calculate the rate factor values to set */ bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; bcnrc_val /= tx_rate; /* clear everything but the rate factor */ bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | IXGBE_RTTBCNRC_RF_DEC_MASK; /* enable the rate scheduler */ bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; } /* * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported * and 0x004 otherwise. */ switch (hw->mac.type) { case ixgbe_mac_82599EB: IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4); break; case ixgbe_mac_X540: IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14); break; default: break; } /* determine how many queues per pool based on VMDq mask */ queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask); /* write value for all Tx queues belonging to VF */ for (queue = 0; queue < queues_per_pool; queue++) { unsigned int reg_idx = (vf * queues_per_pool) + queue; IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx); IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); } } void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter) { int i; /* VF Tx rate limit was not set */ if (!adapter->vf_rate_link_speed) return; if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) { adapter->vf_rate_link_speed = 0; dev_info(&adapter->pdev->dev, "Link speed has been changed. VF Transmit rate is disabled\n"); } for (i = 0; i < adapter->num_vfs; i++) { if (!adapter->vf_rate_link_speed) adapter->vfinfo[i].tx_rate = 0; ixgbe_set_vf_rate_limit(adapter, i); } } int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate, int max_tx_rate) { struct ixgbe_adapter *adapter = netdev_priv(netdev); int link_speed; /* verify VF is active */ if (vf >= adapter->num_vfs) return -EINVAL; /* verify link is up */ if (!adapter->link_up) return -EINVAL; /* verify we are linked at 10Gbps */ link_speed = ixgbe_link_mbps(adapter); if (link_speed != 10000) return -EINVAL; if (min_tx_rate) return -EINVAL; /* rate limit cannot be less than 10Mbs or greater than link speed */ if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed))) return -EINVAL; /* store values */ adapter->vf_rate_link_speed = link_speed; adapter->vfinfo[vf].tx_rate = max_tx_rate; /* update hardware configuration */ ixgbe_set_vf_rate_limit(adapter, vf); return 0; } int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; if (vf >= adapter->num_vfs) return -EINVAL; adapter->vfinfo[vf].spoofchk_enabled = setting; /* configure MAC spoofing */ hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf); /* configure VLAN spoofing */ hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf); /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be * calling set_ethertype_anti_spoofing for each VF in loop below */ if (hw->mac.ops.set_ethertype_anti_spoofing) { IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP), (IXGBE_ETQF_FILTER_EN | IXGBE_ETQF_TX_ANTISPOOF | ETH_P_LLDP)); IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC), (IXGBE_ETQF_FILTER_EN | IXGBE_ETQF_TX_ANTISPOOF | ETH_P_PAUSE)); hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf); } return 0; } /** * ixgbe_set_vf_link_state - Set link state * @adapter: Pointer to adapter struct * @vf: VF identifier * @state: required link state * * Set a link force state on/off a single vf **/ void ixgbe_set_vf_link_state(struct ixgbe_adapter *adapter, int vf, int state) { adapter->vfinfo[vf].link_state = state; switch (state) { case IFLA_VF_LINK_STATE_AUTO: if (test_bit(__IXGBE_DOWN, &adapter->state)) adapter->vfinfo[vf].link_enable = false; else adapter->vfinfo[vf].link_enable = true; break; case IFLA_VF_LINK_STATE_ENABLE: adapter->vfinfo[vf].link_enable = true; break; case IFLA_VF_LINK_STATE_DISABLE: adapter->vfinfo[vf].link_enable = false; break; } ixgbe_set_vf_rx_tx(adapter, vf); /* restart the VF */ adapter->vfinfo[vf].clear_to_send = false; ixgbe_ping_vf(adapter, vf); } /** * ixgbe_ndo_set_vf_link_state - Set link state * @netdev: network interface device structure * @vf: VF identifier * @state: required link state * * Set the link state of a specified VF, regardless of physical link state **/ int ixgbe_ndo_set_vf_link_state(struct net_device *netdev, int vf, int state) { struct ixgbe_adapter *adapter = netdev_priv(netdev); int ret = 0; if (vf < 0 || vf >= adapter->num_vfs) { dev_err(&adapter->pdev->dev, "NDO set VF link - invalid VF identifier %d\n", vf); return -EINVAL; } switch (state) { case IFLA_VF_LINK_STATE_ENABLE: dev_info(&adapter->pdev->dev, "NDO set VF %d link state %d - not supported\n", vf, state); break; case IFLA_VF_LINK_STATE_DISABLE: dev_info(&adapter->pdev->dev, "NDO set VF %d link state disable\n", vf); ixgbe_set_vf_link_state(adapter, vf, state); break; case IFLA_VF_LINK_STATE_AUTO: dev_info(&adapter->pdev->dev, "NDO set VF %d link state auto\n", vf); ixgbe_set_vf_link_state(adapter, vf, state); break; default: dev_err(&adapter->pdev->dev, "NDO set VF %d - invalid link state %d\n", vf, state); ret = -EINVAL; } return ret; } int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf, bool setting) { struct ixgbe_adapter *adapter = netdev_priv(netdev); /* This operation is currently supported only for 82599 and x540 * devices. */ if (adapter->hw.mac.type < ixgbe_mac_82599EB || adapter->hw.mac.type >= ixgbe_mac_X550) return -EOPNOTSUPP; if (vf >= adapter->num_vfs) return -EINVAL; adapter->vfinfo[vf].rss_query_enabled = setting; return 0; } int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) { struct ixgbe_adapter *adapter = netdev_priv(netdev); if (vf >= adapter->num_vfs) return -EINVAL; /* nothing to do */ if (adapter->vfinfo[vf].trusted == setting) return 0; adapter->vfinfo[vf].trusted = setting; /* reset VF to reconfigure features */ adapter->vfinfo[vf].clear_to_send = false; ixgbe_ping_vf(adapter, vf); e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not "); return 0; } int ixgbe_ndo_get_vf_config(struct net_device *netdev, int vf, struct ifla_vf_info *ivi) { struct ixgbe_adapter *adapter = netdev_priv(netdev); if (vf >= adapter->num_vfs) return -EINVAL; ivi->vf = vf; memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN); ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate; ivi->min_tx_rate = 0; ivi->vlan = adapter->vfinfo[vf].pf_vlan; ivi->qos = adapter->vfinfo[vf].pf_qos; ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled; ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled; ivi->trusted = adapter->vfinfo[vf].trusted; return 0; }