added files for IPV6

[ppp.git] / pppd / eui64.h

diff --git a/pppd/eui64.h b/pppd/eui64.h
new file mode 100644 (file)
index 0000000..2ea42ce
--- /dev/null
+++ b/pppd/eui64.h
@@ -0,0 +1,68 @@
+/*
+ * eui64.h - EUI64 routines for IPv6CP.
+ *
+ * (c) 1999 Tommi Komulainen <Tommi.Komulainen@iki.fi>
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by Carnegie Mellon University.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * $Id: eui64.h,v 1.1 1999/08/13 01:58:43 paulus Exp $
+ */
+
+/*
+ * TODO:
+ *
+ * Maybe this should be done by processing struct in6_addr directly...
+ */
+typedef union
+{
+    u_int8_t e8[8];
+    u_int16_t e16[4];
+    u_int32_t e32[2];
+} eui64_t;
+
+#define eui64_iszero(e)                (((e).e32[0] | (e).e32[1]) == 0)
+#define eui64_equals(e, o)     (((e).e32[0] == (o).e32[0]) && \
+                               ((e).e32[1] == (o).e32[1]))
+#define eui64_zero(e)          (e).e32[0] = (e).e32[1] = 0;
+
+#define eui64_copy(s, d)       memcpy(&(d), &(s), sizeof(eui64_t))
+
+#define eui64_magic(e)         do {                    \
+                               (e).e32[0] = magic();   \
+                               (e).e32[1] = magic();   \
+                               (e).e8[0] &= ~2;        \
+                               } while (0)
+#define eui64_magic_nz(x)      do {                            \
+                               eui64_magic(x);                 \
+                               } while (eui64_iszero(x))
+#define eui64_magic_ne(x, y)   do {                            \
+                               eui64_magic(x);                 \
+                               } while (eui64_equals(x, y))
+
+#define eui64_get(ll, cp)      do {                            \
+                               eui64_copy((*cp), (ll));        \
+                               (cp) += sizeof(eui64_t);        \
+                               } while (0)
+
+#define eui64_put(ll, cp)      do {                            \
+                               eui64_copy((ll), (*cp));        \
+                               (cp) += sizeof(eui64_t);        \
+                               } while (0)
+
+#define eui64_set32(e, l)      do {                    \
+                               (e).e32[0] = 0;         \
+                               (e).e32[1] = htonl(l);  \
+                               } while (0)
+#define eui64_setlo32(e, l)    eui64_set32(e, l)
+
+char *eui64_ntoa __P((eui64_t));       /* Returns ascii representation of id */