service: add vxlan tunnel support

[project/unetd.git] / utils.h

diff --git a/utils.h b/utils.h
index eac083eb1491d2aed9805215527910b3f2f27d3e..b0243743e8db6c8e5fb3d253fab9d38d2c615577 100644 (file)
--- a/utils.h
+++ b/utils.h
@@ -55,4 +55,31 @@ int network_get_subnet(int af, union network_addr *addr, int *mask,
                       const char *str);
 int network_get_local_addr(void *local, const union network_endpoint *target);
 
+#define DIV_ROUND_UP(n, d)     (((n) + (d) - 1) / (d))
+
+#define bitmask_size(len)      (4 * DIV_ROUND_UP(len, 32))
+
+static inline bool bitmask_test(uint32_t *mask, unsigned int i)
+{
+       return mask[i / 32] & (1 << (i % 32));
+}
+
+static inline void bitmask_set(uint32_t *mask, unsigned int i)
+{
+       mask[i / 32] |= 1 << (i % 32);
+}
+
+static inline void bitmask_clear(uint32_t *mask, unsigned int i)
+{
+       mask[i / 32] &= ~(1 << (i % 32));
+}
+
+static inline void bitmask_set_val(uint32_t *mask, unsigned int i, bool val)
+{
+       if (val)
+               bitmask_set(mask, i);
+       else
+               bitmask_clear(mask, i);
+}
+
 #endif