net/sfc: unify power of 2 alignment check macro

[dpdk.git] / drivers / net / sfc / base / efx.h

diff --git a/drivers/net/sfc/base/efx.h b/drivers/net/sfc/base/efx.h
index 6aff68b..53ddaa9 100644 (file)
--- a/drivers/net/sfc/base/efx.h
+++ b/drivers/net/sfc/base/efx.h
@@ -37,6 +37,10 @@ extern "C" {
 #define        EFX_P2ALIGN(_type, _value, _align)      \
        ((_type)(_value) & -(_type)(_align))
 
+/* Test if value is power of 2 aligned. */
+#define        EFX_IS_P2ALIGNED(_type, _value, _align) \
+       ((((_type)(_value)) & ((_type)(_align) - 1)) == 0)
+
 /* Return codes */
 
 typedef __success(return == 0) int efx_rc_t;