These will have callers later.
Signed-off-by: Justin Pettit <jpet...@ovn.org>
---
lib/packets.c | 38 ++++++++++++++++++++++++++++++++++++++
lib/packets.h | 3 +++
2 files changed, 41 insertions(+)
diff --git a/lib/packets.c b/lib/packets.c
index 9e4d0e7..9b34961 100644
--- a/lib/packets.c
+++ b/lib/packets.c
@@ -693,6 +693,44 @@ struct in6_addr ipv6_addr_bitand(const struct in6_addr *a,
return dst;
}
+struct in6_addr ipv6_addr_bitxor(const struct in6_addr *a,
+ const struct in6_addr *b)
+{
+ int i;
+ struct in6_addr dst;
+
+#ifdef s6_addr32
+ for (i=0; i<4; i++) {
+ dst.s6_addr32[i] = a->s6_addr32[i] ^ b->s6_addr32[i];
+ }
+#else
+ for (i=0; i<16; i++) {
+ dst.s6_addr[i] = a->s6_addr[i] ^ b->s6_addr[i];
+ }
+#endif
+
+ return dst;
+}
+
+bool ipv6_is_zero(const struct in6_addr *a)
+{
+#ifdef s6_addr32
+ for (int i = 0; i < 4; i++) {
+ if (a->s6_addr32[i]) {
+ return false;
+ }
+ }
+#else
+ for (int i = 0; i < 16; i++) {
+ if (a->s6_addr[i]) {
+ return false;
+ }
+ }
+#endif
+
+ return true;
+}
+
/* Returns an in6_addr consisting of 'mask' high-order 1-bits and 128-N
* low-order 0-bits. */
struct in6_addr
diff --git a/lib/packets.h b/lib/packets.h
index 06166de..2043175 100644
--- a/lib/packets.h
+++ b/lib/packets.h
@@ -1027,6 +1027,9 @@ void ipv6_format_masked(const struct in6_addr *addr,
const char * ipv6_string_mapped(char *addr_str, const struct in6_addr *addr);
struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
const struct in6_addr *mask);
+struct in6_addr ipv6_addr_bitxor(const struct in6_addr *a,
+ const struct in6_addr *b);
+bool ipv6_is_zero(const struct in6_addr *a);
struct in6_addr ipv6_create_mask(int mask);
int ipv6_count_cidr_bits(const struct in6_addr *netmask);
bool ipv6_is_cidr(const struct in6_addr *netmask);
--
1.9.1
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