lib: work around unnamed structs/unions

[dpdk.git] / lib / librte_eal / common / include / rte_common.h

diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index f8ca6f3..98ecc1c 100644 (file)
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -38,7 +38,7 @@
  * @file
  *
  * Generic, commonly-used macro and inline function definitions
- * for Intel DPDK.
+ * for DPDK.
  */
 
 #ifdef __cplusplus
@@ -59,6 +59,13 @@ extern "C" {
 #define asm __asm__
 #endif
 
+/** C extension macro for environments lacking C11 features. */
+#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L
+#define RTE_STD_C11 __extension__
+#else
+#define RTE_STD_C11
+#endif
+
 #ifdef RTE_ARCH_STRICT_ALIGN
 typedef uint64_t unaligned_uint64_t __attribute__ ((aligned(1)));
 typedef uint32_t unaligned_uint32_t __attribute__ ((aligned(1)));
@@ -69,6 +76,16 @@ typedef uint32_t unaligned_uint32_t;
 typedef uint16_t unaligned_uint16_t;
 #endif
 
+/**
+ * Force alignment
+ */
+#define __rte_aligned(a) __attribute__((__aligned__(a)))
+
+/**
+ * Force a structure to be packed
+ */
+#define __rte_packed __attribute__((__packed__))
+
 /******* Macro to mark functions and fields scheduled for removal *****/
 #define __rte_deprecated       __attribute__((__deprecated__))
 
@@ -258,7 +275,8 @@ rte_align64pow2(uint64_t v)
 /**
  * Macro to return the minimum of two numbers
  */
-#define RTE_MIN(a, b) ({ \
+#define RTE_MIN(a, b) \
+       __extension__ ({ \
                typeof (a) _a = (a); \
                typeof (b) _b = (b); \
                _a < _b ? _a : _b; \
@@ -267,7 +285,8 @@ rte_align64pow2(uint64_t v)
 /**
  * Macro to return the maximum of two numbers
  */
-#define RTE_MAX(a, b) ({ \
+#define RTE_MAX(a, b) \
+       __extension__ ({ \
                typeof (a) _a = (a); \
                typeof (b) _b = (b); \
                _a > _b ? _a : _b; \