net/ice/base: add basic Tx scheduler

[dpdk.git] / drivers / net / cxgbe / cxgbe_compat.h

diff --git a/drivers/net/cxgbe/cxgbe_compat.h b/drivers/net/cxgbe/cxgbe_compat.h
index 779bcf1..5d47c5f 100644 (file)
--- a/drivers/net/cxgbe/cxgbe_compat.h
+++ b/drivers/net/cxgbe/cxgbe_compat.h
@@ -198,15 +198,6 @@ static inline int cxgbe_fls(int x)
        return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;
 }
 
-/**
- * cxgbe_ffs - find first bit set
- * @x: the word to search
- */
-static inline int cxgbe_ffs(int x)
-{
-       return x ? __builtin_ffs(x) : 0;
-}
-
 static inline unsigned long ilog2(unsigned long n)
 {
        unsigned int e = 0;
@@ -250,4 +241,16 @@ static inline void writel_relaxed(unsigned int val, volatile void __iomem *addr)
        rte_write32_relaxed(val, addr);
 }
 
+/*
+ * Multiplies an integer by a fraction, while avoiding unnecessary
+ * overflow or loss of precision.
+ */
+#define mult_frac(x, numer, denom)(                     \
+{                                                       \
+       typeof(x) quot = (x) / (denom);                 \
+       typeof(x) rem  = (x) % (denom);                 \
+       (quot * (numer)) + ((rem * (numer)) / (denom)); \
+}                                                       \
+)
+
 #endif /* _CXGBE_COMPAT_H_ */