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ixgbevf: Add lock around mailbox ops to prevent simultaneous access 

This change adds a spinlock around the mailbox accesses to prevent
simultaneous access to the mailboxes.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2012-05-11 08:33:06 +00:00 committed by Jeff Kirsher
parent 9297127b9c
commit 1c55ed768b
2 changed files with 41 additions and 2 deletions
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2
drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
View File

@ -249,6 +249,8 @@ struct ixgbevf_adapter {
bool link_up;
struct work_struct watchdog_task;
spinlock_t mbx_lock;
};
enum ixbgevf_state_t {

41
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
View File

@ -1120,9 +1120,14 @@ static int ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbe_hw *hw = &adapter->hw;
spin_lock(&adapter->mbx_lock);
/* add VID to filter table */
if (hw->mac.ops.set_vfta)
hw->mac.ops.set_vfta(hw, vid, 0, true);
spin_unlock(&adapter->mbx_lock);
set_bit(vid, adapter->active_vlans);
return 0;
@ -1133,9 +1138,14 @@ static int ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbe_hw *hw = &adapter->hw;
spin_lock(&adapter->mbx_lock);
/* remove VID from filter table */
if (hw->mac.ops.set_vfta)
hw->mac.ops.set_vfta(hw, vid, 0, false);
spin_unlock(&adapter->mbx_lock);
clear_bit(vid, adapter->active_vlans);
return 0;
@ -1190,11 +1200,15 @@ static void ixgbevf_set_rx_mode(struct net_device *netdev)
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbe_hw *hw = &adapter->hw;
spin_lock(&adapter->mbx_lock);
/* reprogram multicast list */
if (hw->mac.ops.update_mc_addr_list)
hw->mac.ops.update_mc_addr_list(hw, netdev);
ixgbevf_write_uc_addr_list(netdev);
spin_unlock(&adapter->mbx_lock);
}
static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter)
@ -1339,6 +1353,8 @@ static void ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
ixgbevf_configure_msix(adapter);
spin_lock(&adapter->mbx_lock);
if (hw->mac.ops.set_rar) {
if (is_valid_ether_addr(hw->mac.addr))
hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
@ -1350,6 +1366,8 @@ static void ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
msg[1] = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
hw->mbx.ops.write_posted(hw, msg, 2);
spin_unlock(&adapter->mbx_lock);
clear_bit(__IXGBEVF_DOWN, &adapter->state);
ixgbevf_napi_enable_all(adapter);
@ -1562,11 +1580,15 @@ void ixgbevf_reset(struct ixgbevf_adapter *adapter)
struct ixgbe_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
spin_lock(&adapter->mbx_lock);
if (hw->mac.ops.reset_hw(hw))
hw_dbg(hw, "PF still resetting\n");
else
hw->mac.ops.init_hw(hw);
spin_unlock(&adapter->mbx_lock);
if (is_valid_ether_addr(adapter->hw.mac.addr)) {
memcpy(netdev->dev_addr, adapter->hw.mac.addr,
netdev->addr_len);
@ -1893,6 +1915,9 @@ static int __devinit ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
adapter->netdev->addr_len);
}
/* lock to protect mailbox accesses */
spin_lock_init(&adapter->mbx_lock);
/* Enable dynamic interrupt throttling rates */
adapter->rx_itr_setting = 1;
adapter->tx_itr_setting = 1;
@ -2032,8 +2057,16 @@ static void ixgbevf_watchdog_task(struct work_struct *work)
* no LSC interrupt
*/
if (hw->mac.ops.check_link) {
if ((hw->mac.ops.check_link(hw, &link_speed,
&link_up, false)) != 0) {
s32 need_reset;
spin_lock(&adapter->mbx_lock);
need_reset = hw->mac.ops.check_link(hw, &link_speed,
&link_up, false);
spin_unlock(&adapter->mbx_lock);
if (need_reset) {
adapter->link_up = link_up;
adapter->link_speed = link_speed;
netif_carrier_off(netdev);
@ -2813,9 +2846,13 @@ static int ixgbevf_set_mac(struct net_device *netdev, void *p)
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
spin_lock(&adapter->mbx_lock);
if (hw->mac.ops.set_rar)
hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
spin_unlock(&adapter->mbx_lock);
return 0;
}