[PATCH v4 10/25] net/ixgbe: replace always-true check

[Anatoly Burakov <anatoly.burakov@intel.com>]

There is an option `RTE_PMD_PACKET_PREFETCH` in `rte_config.h` that is
always set to 1 by default, and that controls some prefetch behavior in the
driver. However, there's another prefetch behavior that is controlled by
`RTE_PMD_USE_PREFETCH`, which is always defined unconditionally (literally
using `#if 1` construct).

Replace the check to also use `RTE_PMD_PACKET_PREFETCH` to allow turning it
off at build time.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---

Notes:
    v3 -> v4:
    - Add this commit

 drivers/net/intel/ixgbe/ixgbe_rxtx.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/intel/ixgbe/ixgbe_rxtx.c b/drivers/net/intel/ixgbe/ixgbe_rxtx.c
index f5fd50584a..3b49ef9fbb 100644
--- a/drivers/net/intel/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/intel/ixgbe/ixgbe_rxtx.c
@@ -74,11 +74,7 @@
 #define IXGBE_TX_OFFLOAD_NOTSUP_MASK \
 		(RTE_MBUF_F_TX_OFFLOAD_MASK ^ IXGBE_TX_OFFLOAD_MASK)
 
-#if 1
-#define RTE_PMD_USE_PREFETCH
-#endif
-
-#ifdef RTE_PMD_USE_PREFETCH
+#ifdef RTE_PMD_PACKET_PREFETCH
 /*
  * Prefetch a cache line into all cache levels.
  */
-- 
2.47.1