igb: improve MAC filter handling
Using the work which was done for ixgbe driver by Jacob Keller commit5d7daa35b9("ixgbe: improve mac filter handling") and Alexander Duyck commit0f079d2283("ixgbe: Use __dev_uc_sync and __dev_uc_unsync for unicast addresses") and out-of-tree igb driver add functionality to manage (add and delete) MAC filters. Signed-off-by: Yury Kylulin <yury.kylulin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Yury Kylulin
Jeff Kirsher
Родитель
5313eeccd2
Коммит
83c21335c8
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@ -449,6 +449,15 @@ struct igb_nfc_filter {
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u16 action;
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};
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struct igb_mac_addr {
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u8 addr[ETH_ALEN];
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u8 queue;
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u8 state; /* bitmask */
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};
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#define IGB_MAC_STATE_DEFAULT 0x1
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#define IGB_MAC_STATE_IN_USE 0x2
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/* board specific private data structure */
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struct igb_adapter {
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unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
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@ -575,6 +584,8 @@ struct igb_adapter {
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/* lock for RX network flow classification filter */
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spinlock_t nfc_lock;
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bool etype_bitmap[MAX_ETYPE_FILTER];
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struct igb_mac_addr *mac_table;
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};
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/* flags controlling PTP/1588 function */
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@ -161,11 +161,16 @@ static void igb_vlan_mode(struct net_device *netdev,
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static int igb_vlan_rx_add_vid(struct net_device *, __be16, u16);
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static int igb_vlan_rx_kill_vid(struct net_device *, __be16, u16);
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static void igb_restore_vlan(struct igb_adapter *);
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static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8);
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static void igb_rar_set_index(struct igb_adapter *, u32);
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static void igb_ping_all_vfs(struct igb_adapter *);
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static void igb_msg_task(struct igb_adapter *);
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static void igb_vmm_control(struct igb_adapter *);
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static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *);
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static void igb_flush_mac_table(struct igb_adapter *);
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static int igb_available_rars(struct igb_adapter *, u8);
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static void igb_set_default_mac_filter(struct igb_adapter *);
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static int igb_uc_sync(struct net_device *, const unsigned char *);
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static int igb_uc_unsync(struct net_device *, const unsigned char *);
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static void igb_restore_vf_multicasts(struct igb_adapter *adapter);
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static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac);
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static int igb_ndo_set_vf_vlan(struct net_device *netdev,
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@ -1987,6 +1992,13 @@ void igb_reset(struct igb_adapter *adapter)
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if (hw->mac.ops.init_hw(hw))
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dev_err(&pdev->dev, "Hardware Error\n");
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/* RAR registers were cleared during init_hw, clear mac table */
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igb_flush_mac_table(adapter);
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__dev_uc_unsync(adapter->netdev, NULL);
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/* Recover default RAR entry */
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igb_set_default_mac_filter(adapter);
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/* Flow control settings reset on hardware reset, so guarantee flow
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* control is off when forcing speed.
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*/
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@ -2095,11 +2107,9 @@ static int igb_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
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/* guarantee we can provide a unique filter for the unicast address */
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if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) {
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struct igb_adapter *adapter = netdev_priv(dev);
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struct e1000_hw *hw = &adapter->hw;
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int vfn = adapter->vfs_allocated_count;
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int rar_entries = hw->mac.rar_entry_count - (vfn + 1);
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if (netdev_uc_count(dev) >= rar_entries)
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if (netdev_uc_count(dev) >= igb_available_rars(adapter, vfn))
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return -ENOMEM;
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}
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@ -2517,6 +2527,8 @@ static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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goto err_eeprom;
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}
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igb_set_default_mac_filter(adapter);
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/* get firmware version for ethtool -i */
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igb_set_fw_version(adapter);
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@ -2761,6 +2773,7 @@ err_eeprom:
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if (hw->flash_address)
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iounmap(hw->flash_address);
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err_sw_init:
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kfree(adapter->mac_table);
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kfree(adapter->shadow_vfta);
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igb_clear_interrupt_scheme(adapter);
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#ifdef CONFIG_PCI_IOV
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@ -2937,6 +2950,7 @@ static void igb_remove(struct pci_dev *pdev)
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iounmap(hw->flash_address);
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pci_release_mem_regions(pdev);
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kfree(adapter->mac_table);
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kfree(adapter->shadow_vfta);
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free_netdev(netdev);
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@ -3099,6 +3113,11 @@ static int igb_sw_init(struct igb_adapter *adapter)
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/* Assume MSI-X interrupts, will be checked during IRQ allocation */
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adapter->flags |= IGB_FLAG_HAS_MSIX;
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adapter->mac_table = kzalloc(sizeof(struct igb_mac_addr) *
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hw->mac.rar_entry_count, GFP_ATOMIC);
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if (!adapter->mac_table)
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return -ENOMEM;
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igb_probe_vfs(adapter);
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igb_init_queue_configuration(adapter);
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@ -3810,8 +3829,7 @@ static void igb_configure_rx(struct igb_adapter *adapter)
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int i;
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/* set the correct pool for the PF default MAC address in entry 0 */
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igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0,
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adapter->vfs_allocated_count);
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igb_set_default_mac_filter(adapter);
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/* Setup the HW Rx Head and Tail Descriptor Pointers and
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* the Base and Length of the Rx Descriptor Ring
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@ -4051,8 +4069,7 @@ static int igb_set_mac(struct net_device *netdev, void *p)
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memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
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/* set the correct pool for the new PF MAC address in entry 0 */
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igb_rar_set_qsel(adapter, hw->mac.addr, 0,
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adapter->vfs_allocated_count);
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igb_set_default_mac_filter(adapter);
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return 0;
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}
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@ -4096,49 +4113,6 @@ static int igb_write_mc_addr_list(struct net_device *netdev)
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return netdev_mc_count(netdev);
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}
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/**
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* igb_write_uc_addr_list - write unicast addresses to RAR table
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* @netdev: network interface device structure
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*
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* Writes unicast address list to the RAR table.
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* Returns: -ENOMEM on failure/insufficient address space
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* 0 on no addresses written
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* X on writing X addresses to the RAR table
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**/
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static int igb_write_uc_addr_list(struct net_device *netdev)
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{
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struct igb_adapter *adapter = netdev_priv(netdev);
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struct e1000_hw *hw = &adapter->hw;
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unsigned int vfn = adapter->vfs_allocated_count;
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unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1);
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int count = 0;
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/* return ENOMEM indicating insufficient memory for addresses */
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if (netdev_uc_count(netdev) > rar_entries)
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return -ENOMEM;
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if (!netdev_uc_empty(netdev) && rar_entries) {
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struct netdev_hw_addr *ha;
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netdev_for_each_uc_addr(ha, netdev) {
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if (!rar_entries)
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break;
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igb_rar_set_qsel(adapter, ha->addr,
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rar_entries--,
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vfn);
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count++;
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}
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}
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/* write the addresses in reverse order to avoid write combining */
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for (; rar_entries > 0 ; rar_entries--) {
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wr32(E1000_RAH(rar_entries), 0);
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wr32(E1000_RAL(rar_entries), 0);
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}
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wrfl();
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return count;
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}
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static int igb_vlan_promisc_enable(struct igb_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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@ -4311,8 +4285,7 @@ static void igb_set_rx_mode(struct net_device *netdev)
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* sufficient space to store all the addresses then enable
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* unicast promiscuous mode
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*/
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count = igb_write_uc_addr_list(netdev);
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if (count < 0) {
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if (__dev_uc_sync(netdev, igb_uc_sync, igb_uc_unsync)) {
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rctl |= E1000_RCTL_UPE;
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vmolr |= E1000_VMOLR_ROPE;
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}
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@ -6369,7 +6342,6 @@ static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
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{
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struct e1000_hw *hw = &adapter->hw;
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unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
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int rar_entry = hw->mac.rar_entry_count - (vf + 1);
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u32 reg, msgbuf[3];
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u8 *addr = (u8 *)(&msgbuf[1]);
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@ -6377,7 +6349,7 @@ static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
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igb_vf_reset(adapter, vf);
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/* set vf mac address */
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igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf);
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igb_set_vf_mac(adapter, vf, vf_mac);
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/* enable transmit and receive for vf */
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reg = rd32(E1000_VFTE);
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@ -6397,6 +6369,138 @@ static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
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igb_write_mbx(hw, msgbuf, 3, vf);
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}
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static void igb_flush_mac_table(struct igb_adapter *adapter)
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{
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struct e1000_hw *hw = &adapter->hw;
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int i;
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for (i = 0; i < hw->mac.rar_entry_count; i++) {
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adapter->mac_table[i].state &= ~IGB_MAC_STATE_IN_USE;
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memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
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adapter->mac_table[i].queue = 0;
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igb_rar_set_index(adapter, i);
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}
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}
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static int igb_available_rars(struct igb_adapter *adapter, u8 queue)
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{
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struct e1000_hw *hw = &adapter->hw;
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/* do not count rar entries reserved for VFs MAC addresses */
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int rar_entries = hw->mac.rar_entry_count -
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adapter->vfs_allocated_count;
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int i, count = 0;
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for (i = 0; i < rar_entries; i++) {
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/* do not count default entries */
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if (adapter->mac_table[i].state & IGB_MAC_STATE_DEFAULT)
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continue;
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/* do not count "in use" entries for different queues */
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if ((adapter->mac_table[i].state & IGB_MAC_STATE_IN_USE) &&
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(adapter->mac_table[i].queue != queue))
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continue;
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count++;
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}
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return count;
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}
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/* Set default MAC address for the PF in the first RAR entry */
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static void igb_set_default_mac_filter(struct igb_adapter *adapter)
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{
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struct igb_mac_addr *mac_table = &adapter->mac_table[0];
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ether_addr_copy(mac_table->addr, adapter->hw.mac.addr);
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mac_table->queue = adapter->vfs_allocated_count;
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mac_table->state = IGB_MAC_STATE_DEFAULT | IGB_MAC_STATE_IN_USE;
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igb_rar_set_index(adapter, 0);
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}
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int igb_add_mac_filter(struct igb_adapter *adapter, const u8 *addr,
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const u8 queue)
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{
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struct e1000_hw *hw = &adapter->hw;
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int rar_entries = hw->mac.rar_entry_count -
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adapter->vfs_allocated_count;
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int i;
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if (is_zero_ether_addr(addr))
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return -EINVAL;
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/* Search for the first empty entry in the MAC table.
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* Do not touch entries at the end of the table reserved for the VF MAC
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* addresses.
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*/
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for (i = 0; i < rar_entries; i++) {
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if (adapter->mac_table[i].state & IGB_MAC_STATE_IN_USE)
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continue;
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ether_addr_copy(adapter->mac_table[i].addr, addr);
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adapter->mac_table[i].queue = queue;
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adapter->mac_table[i].state |= IGB_MAC_STATE_IN_USE;
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igb_rar_set_index(adapter, i);
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return i;
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}
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return -ENOSPC;
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}
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int igb_del_mac_filter(struct igb_adapter *adapter, const u8 *addr,
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const u8 queue)
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{
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struct e1000_hw *hw = &adapter->hw;
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int rar_entries = hw->mac.rar_entry_count -
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adapter->vfs_allocated_count;
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int i;
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if (is_zero_ether_addr(addr))
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return -EINVAL;
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/* Search for matching entry in the MAC table based on given address
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* and queue. Do not touch entries at the end of the table reserved
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* for the VF MAC addresses.
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*/
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for (i = 0; i < rar_entries; i++) {
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if (!(adapter->mac_table[i].state & IGB_MAC_STATE_IN_USE))
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continue;
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if (adapter->mac_table[i].queue != queue)
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continue;
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if (!ether_addr_equal(adapter->mac_table[i].addr, addr))
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continue;
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adapter->mac_table[i].state &= ~IGB_MAC_STATE_IN_USE;
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memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
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adapter->mac_table[i].queue = 0;
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igb_rar_set_index(adapter, i);
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return 0;
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}
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return -ENOENT;
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}
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static int igb_uc_sync(struct net_device *netdev, const unsigned char *addr)
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{
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struct igb_adapter *adapter = netdev_priv(netdev);
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int ret;
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ret = igb_add_mac_filter(adapter, addr, adapter->vfs_allocated_count);
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return min_t(int, ret, 0);
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}
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static int igb_uc_unsync(struct net_device *netdev, const unsigned char *addr)
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{
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struct igb_adapter *adapter = netdev_priv(netdev);
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igb_del_mac_filter(adapter, addr, adapter->vfs_allocated_count);
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return 0;
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}
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static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf)
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{
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/* The VF MAC Address is stored in a packed array of bytes
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@ -8078,11 +8182,16 @@ static void igb_io_resume(struct pci_dev *pdev)
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igb_get_hw_control(adapter);
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}
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static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index,
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u8 qsel)
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/**
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* igb_rar_set_index - Sync RAL[index] and RAH[index] registers with MAC table
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* @adapter: Pointer to adapter structure
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* @index: Index of the RAR entry which need to be synced with MAC table
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**/
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static void igb_rar_set_index(struct igb_adapter *adapter, u32 index)
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{
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struct e1000_hw *hw = &adapter->hw;
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u32 rar_low, rar_high;
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u8 *addr = adapter->mac_table[index].addr;
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/* HW expects these to be in network order when they are plugged
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* into the registers which are little endian. In order to guarantee
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@ -8093,12 +8202,16 @@ static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index,
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rar_high = le16_to_cpup((__le16 *)(addr + 4));
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/* Indicate to hardware the Address is Valid. */
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rar_high |= E1000_RAH_AV;
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if (adapter->mac_table[index].state & IGB_MAC_STATE_IN_USE) {
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rar_high |= E1000_RAH_AV;
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if (hw->mac.type == e1000_82575)
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rar_high |= E1000_RAH_POOL_1 * qsel;
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else
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rar_high |= E1000_RAH_POOL_1 << qsel;
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if (hw->mac.type == e1000_82575)
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rar_high |= E1000_RAH_POOL_1 *
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adapter->mac_table[index].queue;
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else
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rar_high |= E1000_RAH_POOL_1 <<
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adapter->mac_table[index].queue;
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}
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wr32(E1000_RAL(index), rar_low);
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wrfl();
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@ -8114,10 +8227,13 @@ static int igb_set_vf_mac(struct igb_adapter *adapter,
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* towards the first, as a result a collision should not be possible
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*/
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int rar_entry = hw->mac.rar_entry_count - (vf + 1);
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unsigned char *vf_mac_addr = adapter->vf_data[vf].vf_mac_addresses;
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memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
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igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf);
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ether_addr_copy(vf_mac_addr, mac_addr);
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ether_addr_copy(adapter->mac_table[rar_entry].addr, mac_addr);
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adapter->mac_table[rar_entry].queue = vf;
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adapter->mac_table[rar_entry].state |= IGB_MAC_STATE_IN_USE;
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igb_rar_set_index(adapter, rar_entry);
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return 0;
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}
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