From: Jesse Brandeburg <jesse.brandeb...@intel.com>
Implement a slightly faster bit check, used for checking descriptors in the hot
path.
Signed-off-by: Jesse Brandeburg <jesse.brandeb...@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell...@intel.com>
---
drivers/net/ice/ice_rxtx.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index c794ee8..7c82931 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -955,14 +955,13 @@
static inline uint64_t
ice_rxd_status_to_pkt_flags(uint64_t qword)
{
- uint64_t flags;
-
- /* Check if RSS_HASH */
- flags = (((qword >> ICE_RX_DESC_STATUS_FLTSTAT_S) &
- ICE_RX_DESC_FLTSTAT_RSS_HASH) ==
- ICE_RX_DESC_FLTSTAT_RSS_HASH) ? PKT_RX_RSS_HASH : 0;
-
- return flags;
+ static const uint64_t bitcheck =
+ (ICE_RX_DESC_FLTSTAT_RSS_HASH << ICE_RX_DESC_STATUS_FLTSTAT_S);
+ /* Check if RSS_HASH */
+ if ((qword & bitcheck) == bitcheck)
+ return PKT_RX_RSS_HASH;
+
+ return 0;
}
/* Rx L3/L4 checksum */
--
1.8.3.1
