diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c')
-rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 1855 |
1 files changed, 1855 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c new file mode 100644 index 0000000000..ea88ac04ab --- /dev/null +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c @@ -0,0 +1,1855 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 1999 - 2018 Intel Corporation. */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/vmalloc.h> +#include <linux/string.h> +#include <linux/in.h> +#include <linux/ip.h> +#include <linux/tcp.h> +#include <linux/ipv6.h> +#include <linux/if_bridge.h> +#ifdef NETIF_F_HW_VLAN_CTAG_TX +#include <linux/if_vlan.h> +#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; + + /* Initialize list of VF macvlans */ + INIT_LIST_HEAD(&adapter->vf_mvs.l); + + 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) { + 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 traffic 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; + unsigned long flags; + int rss; + + spin_lock_irqsave(&adapter->vfs_lock, flags); + /* set num VFs to 0 to prevent access to vfinfo */ + adapter->num_vfs = 0; + spin_unlock_irqrestore(&adapter->vfs_lock, flags); + + /* 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_ROMPE | + IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE; + enable = IXGBE_VMOLR_BAM; + 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 = IXGBE_VMOLR_VPE; + enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | + IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE; + 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; + unsigned long flags; + u32 vf; + + spin_lock_irqsave(&adapter->vfs_lock, flags); + 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); + } + spin_unlock_irqrestore(&adapter->vfs_lock, flags); +} + +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; +} |