X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=utils.h;h=db6217ed849b53de35e5b8419e7ba89afc579795;hb=11e8afea0f7eb34f8c23a8e589ee659c46f3f8aa;hp=41ea02cc95b6f07acc07fe50449714590e1a9b74;hpb=fcd5ba8fbdf745fd6dac672d8891260bdc5669c9;p=project%2Flibubox.git

diff --git a/utils.h b/utils.h
index 41ea02c..db6217e 100644
--- a/utils.h
+++ b/utils.h
@@ -22,6 +22,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <stdint.h>
+#include <stdbool.h>
 #include <time.h>
 
 /*
@@ -99,7 +100,7 @@ void clock_gettime(int type, struct timespec *tv);
 #define __LITTLE_ENDIAN LITTLE_ENDIAN
 #endif
 
-#define __u_bswap16(x) ((uint16_t)((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8)))
+#define __u_bswap16(x) ({ uint16_t val = (x); ((uint16_t)(((val >> 8) & 0xffu) | ((val & 0xffu) << 8))); })
 
 #if _GNUC_MIN_VER(4, 2)
 #define __u_bswap32(x) __builtin_bswap32(x)
@@ -151,4 +152,18 @@ void clock_gettime(int type, struct timespec *tv);
 #define __packed __attribute__((packed))
 #endif
 
+#ifndef BITS_PER_LONG
+#define BITS_PER_LONG (8 * sizeof(unsigned long))
+#endif
+
+static inline void bitfield_set(unsigned long *bits, int bit)
+{
+	bits[bit / BITS_PER_LONG] |= (1UL << (bit % BITS_PER_LONG));
+}
+
+static inline bool bitfield_test(unsigned long *bits, int bit)
+{
+	return !!(bits[bit / BITS_PER_LONG] & (1UL << (bit % BITS_PER_LONG)));
+}
+
 #endif