rounddown() was not available in older kenrel, such as kernel 2.6.32.61.
Add it to the compatibility code.
Signed-off-by: Andy Zhou <az...@nicira.com>
---
datapath/linux/compat/include/linux/kernel.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/datapath/linux/compat/include/linux/kernel.h
b/datapath/linux/compat/include/linux/kernel.h
index fdd2005..6e248c5 100644
--- a/datapath/linux/compat/include/linux/kernel.h
+++ b/datapath/linux/compat/include/linux/kernel.h
@@ -87,4 +87,13 @@
#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
#endif
+#ifndef rounddown
+#define rounddown(x, y) ( \
+{ \
+ typeof(x) __x = (x); \
+ __x - (__x % (y)); \
+} \
+)
+#endif
+
#endif /* linux/kernel.h */
--
1.7.9.5
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