netdev-linux: Add MTU check before setting MTU.

[sliver-openvswitch.git] / lib / util.h

diff --git a/lib/util.h b/lib/util.h
index 5c8618d..b2052f3 100644 (file)
--- a/lib/util.h
+++ b/lib/util.h
@@ -53,6 +53,14 @@
 #define BUILD_ASSERT_DECL BOOST_STATIC_ASSERT
 #endif /* __cplusplus */
 
+#ifdef __GNUC__
+#define BUILD_ASSERT_GCCONLY(EXPR) BUILD_ASSERT(EXPR)
+#define BUILD_ASSERT_DECL_GCCONLY(EXPR) BUILD_ASSERT_DECL(EXPR)
+#else
+#define BUILD_ASSERT_GCCONLY(EXPR) ((void) 0)
+#define BUILD_ASSERT_DECL_GCCONLY(EXPR) ((void) 0)
+#endif
+
 extern const char *program_name;
 
 /* Returns the number of elements in ARRAY. */
@@ -195,8 +203,12 @@ char *abs_file_name(const char *dir, const char *file_name);
 
 void ignore(bool x OVS_UNUSED);
 int log_2_floor(uint32_t);
+int log_2_ceil(uint32_t);
 int ctz(uint32_t);
 
+bool is_all_zeros(const uint8_t *, size_t);
+bool is_all_ones(const uint8_t *, size_t);
+
 #ifdef  __cplusplus
 }
 #endif