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Index: bgpd/util.c
===================================================================
RCS file: /home/cvs/private/hrs/openbgpd/bgpd/util.c,v
retrieving revision 1.1.1.1
retrieving revision 1.3
diff -u -p -r1.1.1.1 -r1.3
--- bgpd/util.c 30 Jun 2009 05:46:15 -0000 1.1.1.1
+++ bgpd/util.c 9 Jul 2009 17:22:14 -0000 1.3
@@ -1,4 +1,4 @@
-/* $OpenBSD: util.c,v 1.4 2008/03/17 20:40:04 henning Exp $ */
+/* $OpenBSD: util.c,v 1.6 2009/06/12 16:42:53 claudio Exp $ */
/*
* Copyright (c) 2006 Claudio Jeker <claudio@openbsd.org>
@@ -18,6 +18,9 @@
*/
#include <sys/types.h>
#include <sys/socket.h>
+#if defined(__FreeBSD__) /* sys/limits.h */
+#include <sys/limits.h>
+#endif /* defined(__FreeBSD__) */
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
@@ -143,7 +146,7 @@ aspath_snprint(char *buf, size_t size, v
UPDATE();
}
}
- /* ensure that we have a valid C-string especially for emtpy as path */
+ /* ensure that we have a valid C-string especially for empty as path */
if (size > 0)
*buf = '\0';
@@ -250,3 +253,29 @@ aspath_extract(const void *seg, int pos)
memcpy(&as, ptr, sizeof(u_int32_t));
return (ntohl(as));
}
+
+in_addr_t
+prefixlen2mask(u_int8_t prefixlen)
+{
+ if (prefixlen == 0)
+ return (0);
+
+ return (0xffffffff << (32 - prefixlen));
+}
+
+void
+inet6applymask(struct in6_addr *dest, const struct in6_addr *src, int prefixlen)
+{
+ struct in6_addr mask;
+ int i;
+
+ bzero(&mask, sizeof(mask));
+ for (i = 0; i < prefixlen / 8; i++)
+ mask.s6_addr[i] = 0xff;
+ i = prefixlen % 8;
+ if (i)
+ mask.s6_addr[prefixlen / 8] = 0xff00 >> i;
+
+ for (i = 0; i < 16; i++)
+ dest->s6_addr[i] = src->s6_addr[i] & mask.s6_addr[i];
+}
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