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ixgbe: cleanup some minor issues in ixgbe_down() 

This patch cleans up two minor issues in ixgbe_down.  Specifically it
addresses the fact that the VFs should not be pinged until after interrupts
are disabled otherwise they might still get a response.  It also drops the
use of the txdctl temporary variable since the only bit we should be
writing to the TXDCTL registers during a shutdown is the flush bit.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2011-04-22 04:08:14 +00:00 committed by Jeff Kirsher
parent f0f9778d04
commit 34cecbbfad
1 changed files with 16 additions and 18 deletions
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34
drivers/net/ixgbe/ixgbe_main.c
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@ -4182,26 +4182,12 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
struct net_device *netdev = adapter->netdev;
struct ixgbe_hw *hw = &adapter->hw;
u32 rxctrl;
u32 txdctl;
int i;
int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
/* signal that we are down to the interrupt handler */
set_bit(__IXGBE_DOWN, &adapter->state);
/* disable receive for all VFs and wait one second */
if (adapter->num_vfs) {
/* ping all the active vfs to let them know we are going down */
ixgbe_ping_all_vfs(adapter);
/* Disable all VFTE/VFRE TX/RX */
ixgbe_disable_tx_rx(adapter);
/* Mark all the VFs as inactive */
for (i = 0 ; i < adapter->num_vfs; i++)
adapter->vfinfo[i].clear_to_send = 0;
}
/* disable receives */
rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
@ -4229,6 +4215,19 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
del_timer_sync(&adapter->service_timer);
/* disable receive for all VFs and wait one second */
if (adapter->num_vfs) {
/* ping all the active vfs to let them know we are going down */
ixgbe_ping_all_vfs(adapter);
/* Disable all VFTE/VFRE TX/RX */
ixgbe_disable_tx_rx(adapter);
/* Mark all the VFs as inactive */
for (i = 0 ; i < adapter->num_vfs; i++)
adapter->vfinfo[i].clear_to_send = 0;
}
/* Cleanup the affinity_hint CPU mask memory and callback */
for (i = 0; i < num_q_vectors; i++) {
struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
@ -4241,11 +4240,10 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
/* disable transmits in the hardware now that interrupts are off */
for (i = 0; i < adapter->num_tx_queues; i++) {
u8 reg_idx = adapter->tx_ring[i]->reg_idx;
txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx),
(txdctl & ~IXGBE_TXDCTL_ENABLE));
IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH);
}
/* Disable the Tx DMA engine on 82599 */
/* Disable the Tx DMA engine on 82599 and X540 */
switch (hw->mac.type) {
case ixgbe_mac_82599EB:
case ixgbe_mac_X540: