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igb: improve MAC filter handling

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Using the work which was done for ixgbe driver by Jacob Keller
commit 5d7daa35b9 ("ixgbe: improve mac filter handling") and Alexander
Duyck commit 0f079d2283 ("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 2017-03-07 11:20:25 +03:00 committed by Jeff Kirsher
parent 5313eeccd2
commit 83c21335c8
2 changed files with 192 additions and 65 deletions
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11
drivers/net/ethernet/intel/igb/igb.h
View File

@ -449,6 +449,15 @@ struct igb_nfc_filter {
u16 action;
};
struct igb_mac_addr {
u8 addr[ETH_ALEN];
u8 queue;
u8 state; /* bitmask */
};
#define IGB_MAC_STATE_DEFAULT 0x1
#define IGB_MAC_STATE_IN_USE 0x2
/* board specific private data structure */
struct igb_adapter {
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
@ -575,6 +584,8 @@ struct igb_adapter {
/* lock for RX network flow classification filter */
spinlock_t nfc_lock;
bool etype_bitmap[MAX_ETYPE_FILTER];
struct igb_mac_addr *mac_table;
};
/* flags controlling PTP/1588 function */

246
drivers/net/ethernet/intel/igb/igb_main.c
View File

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