1 files changed, 82 insertions, 0 deletions
diff --git a/ospf6d/ospf6_proto.c b/ospf6d/ospf6_proto.c
new file mode 100644
index 0000000..09b7b21
--- /dev/null
+++ b/ospf6d/ospf6_proto.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2003 Yasuhiro Ohara
+ */
+
+#include <zebra.h>
+
+#include "log.h"
+
+#include "ospf6_proto.h"
+
+void ospf6_prefix_in6_addr(struct in6_addr *in6, const void *prefix_buf,
+			   const struct ospf6_prefix *p)
+{
+	ptrdiff_t in6_off = (caddr_t)p->addr - (caddr_t)prefix_buf;
+
+	memset(in6, 0, sizeof(struct in6_addr));
+	memcpy(in6, (uint8_t *)prefix_buf + in6_off,
+	       OSPF6_PREFIX_SPACE(p->prefix_length));
+}
+
+void ospf6_prefix_apply_mask(struct ospf6_prefix *op)
+{
+	uint8_t *pnt, mask;
+	int index, offset;
+
+	pnt = (uint8_t *)((caddr_t)op + sizeof(struct ospf6_prefix));
+	index = op->prefix_length / 8;
+	offset = op->prefix_length % 8;
+	mask = 0xff << (8 - offset);
+
+	if (index > 16) {
+		zlog_warn("Prefix length too long: %d", op->prefix_length);
+		return;
+	}
+
+	/* nonzero mask means no check for this byte because if it contains
+	 * prefix bits it must be there for us to write */
+	if (mask)
+		pnt[index++] &= mask;
+
+	while (index < OSPF6_PREFIX_SPACE(op->prefix_length))
+		pnt[index++] = 0;
+}
+
+void ospf6_prefix_options_printbuf(uint8_t prefix_options, char *buf, int size)
+{
+	const char *dn, *p, *mc, *la, *nu;
+
+	dn = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_DN) ? "DN" : "--");
+	p = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_P) ? "P" : "--");
+	mc = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_MC) ? "MC" : "--");
+	la = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_LA) ? "LA" : "--");
+	nu = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_NU) ? "NU" : "--");
+	snprintf(buf, size, "%s|%s|%s|%s|%s", dn, p, mc, la, nu);
+}
+
+void ospf6_capability_printbuf(char capability, char *buf, int size)
+{
+	char w, v, e, b;
+	w = (capability & OSPF6_ROUTER_BIT_W ? 'W' : '-');
+	v = (capability & OSPF6_ROUTER_BIT_V ? 'V' : '-');
+	e = (capability & OSPF6_ROUTER_BIT_E ? 'E' : '-');
+	b = (capability & OSPF6_ROUTER_BIT_B ? 'B' : '-');
+	snprintf(buf, size, "----%c%c%c%c", w, v, e, b);
+}
+
+void ospf6_options_printbuf(uint8_t *options, char *buf, int size)
+{
+	const char *dc, *r, *n, *mc, *e, *v6, *af, *at, *l;
+	dc = (OSPF6_OPT_ISSET(options, OSPF6_OPT_DC) ? "DC" : "--");
+	r = (OSPF6_OPT_ISSET(options, OSPF6_OPT_R) ? "R" : "-");
+	n = (OSPF6_OPT_ISSET(options, OSPF6_OPT_N) ? "N" : "-");
+	mc = (OSPF6_OPT_ISSET(options, OSPF6_OPT_MC) ? "MC" : "--");
+	e = (OSPF6_OPT_ISSET(options, OSPF6_OPT_E) ? "E" : "-");
+	v6 = (OSPF6_OPT_ISSET(options, OSPF6_OPT_V6) ? "V6" : "--");
+	af = (OSPF6_OPT_ISSET_EXT(options, OSPF6_OPT_AF) ? "AF" : "--");
+	at = (OSPF6_OPT_ISSET_EXT(options, OSPF6_OPT_AT) ? "AT" : "--");
+	l = (OSPF6_OPT_ISSET_EXT(options, OSPF6_OPT_L) ? "L" : "-");
+	snprintf(buf, size, "%s|%s|%s|-|-|%s|%s|%s|%s|%s|%s", at, l, af, dc, r,
+		 n, mc, e, v6);
+}