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ixgbe: fix ixgbe_tx_is_paused logic

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The TFCS bits show the current XON state.  Meaning that the
device is paused if these bits are 0.  This fixes the logic
to work as it was intended.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend 2010-05-18 16:00:10 +00:00 committed by David S. Miller
parent 38e0bd9898
commit 7483d9ddaf
1 changed files with 4 additions and 4 deletions
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8
drivers/net/ixgbe/ixgbe_main.c
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@ -625,16 +625,16 @@ static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter,
}
/**
* ixgbe_tx_is_paused - check if the tx ring is paused
* ixgbe_tx_xon_state - check the tx ring xon state
* @adapter: the ixgbe adapter
* @tx_ring: the corresponding tx_ring
*
* If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the
* corresponding TC of this tx_ring when checking TFCS.
*
* Returns : true if paused
* Returns : true if in xon state (currently not paused)
*/
static inline bool ixgbe_tx_is_paused(struct ixgbe_adapter *adapter,
static inline bool ixgbe_tx_xon_state(struct ixgbe_adapter *adapter,
struct ixgbe_ring *tx_ring)
{
u32 txoff = IXGBE_TFCS_TXOFF;
@ -690,7 +690,7 @@ static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
adapter->detect_tx_hung = false;
if (tx_ring->tx_buffer_info[eop].time_stamp &&
time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) &&
!ixgbe_tx_is_paused(adapter, tx_ring)) {
ixgbe_tx_xon_state(adapter, tx_ring)) {
/* detected Tx unit hang */
union ixgbe_adv_tx_desc *tx_desc;
tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);