1 files changed, 35 insertions, 0 deletions
diff --git a/lib/ipv4.h b/lib/ipv4.h
new file mode 100644
index 00000000..e5c1e8ca
--- /dev/null
+++ b/lib/ipv4.h
@@ -0,0 +1,35 @@
+/*
+ *	BIRD -- IP Addresses et Cetera for IPv4
+ *
+ *	(c) 1998 Martin Mares <mj@ucw.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#ifndef _BIRD_IPV4_H_
+#define _BIRD_IPV4_H_
+
+#include <netinet/in.h>
+
+typedef struct ipv4_addr {
+  u32 addr;
+} ip_addr;
+
+#define _I(x) (x).addr
+#define _MI(x) ((struct ip_addr) { x })
+
+#define IPA_NONE(_MI(0))
+
+#define ipa_equal(x,y) (_I(x) == _I(y))
+#define ipa_and(x,y) _MI(_I(x) & _I(y))
+#define ipa_or(x,y) _MI(_I(x) | _I(y))
+#define ipa_not(x) _MI(~_I(x))
+#define ipa_mkmask(x) _MI(ipv4_mkmask(x))
+#define ipa_mklen(x) ipv4_mklen(_I(x))
+
+unsigned ipv4_mklen(u32);
+u32 ipv4_mkmask(unsigned);
+
+/* ??? htonl and ntohl ??? */
+
+#endif