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ixgbe: Convert IXGBE_DESC_UNUSED from macro to static inline function

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This change is a minor cleanup that converts the IXGBE_DESC_UNUSED macro
into a static inline function just for the case of the code being a bit
cleaner.

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 2011-05-27 05:31:37 +00:00 committed by Jeff Kirsher
parent a65151ba20
commit 7d4987de75
2 changed files with 12 additions and 8 deletions
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10
drivers/net/ixgbe/ixgbe.h
View File

@ -306,9 +306,13 @@ struct ixgbe_q_vector {
((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
#define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
#define IXGBE_DESC_UNUSED(R) \
((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
(R)->next_to_clean - (R)->next_to_use - 1)
static inline u16 ixgbe_desc_unused(struct ixgbe_ring *ring)
{
u16 ntc = ring->next_to_clean;
u16 ntu = ring->next_to_use;
return ((ntc > ntu) ? 0 : ring->count) + ntc - ntu - 1;
}
#define IXGBE_RX_DESC_ADV(R, i) \
(&(((union ixgbe_adv_rx_desc *)((R)->desc))[i]))

10
drivers/net/ixgbe/ixgbe_main.c
View File

@ -882,7 +882,7 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
if (unlikely(count && netif_carrier_ok(tx_ring->netdev) &&
(IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
(ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) {
/* Make sure that anybody stopping the queue after this
* sees the new next_to_clean.
*/
@ -1474,7 +1474,7 @@ next_desc:
}
rx_ring->next_to_clean = i;
cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
cleaned_count = ixgbe_desc_unused(rx_ring);
if (cleaned_count)
ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
@ -3126,7 +3126,7 @@ void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
ixgbe_rx_desc_queue_enable(adapter, ring);
ixgbe_alloc_rx_buffers(ring, IXGBE_DESC_UNUSED(ring));
ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring));
}
static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
@ -6817,7 +6817,7 @@ static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int size)
/* We need to check again in a case another CPU has just
* made room available. */
if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
if (likely(ixgbe_desc_unused(tx_ring) < size))
return -EBUSY;
/* A reprieve! - use start_queue because it doesn't call schedule */
@ -6828,7 +6828,7 @@ static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int size)
static int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int size)
{
if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
if (likely(ixgbe_desc_unused(tx_ring) >= size))
return 0;
return __ixgbe_maybe_stop_tx(tx_ring, size);
}