lib/in46_addr: add in46a_from_gsna

Prepare to use it in gtp-kernel.c in a future patch.

Related: OS#6096
Change-Id: I3e76eb7ee89ba338f085c617662d15cffa2a62d5

3 files changed, 10 insertions, 4 deletions

diff --git a/ggsn/ggsn_vty.c b/ggsn/ggsn_vty.c
index 2d49a94..7414b6a 100644
--- a/ggsn/ggsn_vty.c
+++ b/ggsn/ggsn_vty.c
@@ -814,10 +814,7 @@ static const char *print_gsnaddr(const struct ul16_t *in)
 {
 	struct in46_addr in46;
 
-	in46.len = in->l;
-	OSMO_ASSERT(in->l <= sizeof(in46.v6));
-	memcpy(&in46.v6, in->v, in->l);
-
+	in46a_from_gsna(in, &in46);
 	return in46a_ntoa(&in46);
 }
 
diff --git a/lib/in46_addr.c b/lib/in46_addr.c
index 2562c71..648fe7e 100644
--- a/lib/in46_addr.c
+++ b/lib/in46_addr.c
@@ -375,3 +375,10 @@ default_to_dyn_v4:
 	dst->v4.s_addr = 0;
 	return 1;
 }
+
+void in46a_from_gsna(const struct ul16_t *in, struct in46_addr *dst)
+{
+	dst->len = in->l;
+	OSMO_ASSERT(in->l <= sizeof(dst->v6));
+	memcpy(&dst->v6, in->v, in->l);
+}
diff --git a/lib/in46_addr.h b/lib/in46_addr.h
index 153df00..5589f94 100644
--- a/lib/in46_addr.h
+++ b/lib/in46_addr.h
@@ -39,3 +39,5 @@ static inline bool in46a_is_v6(const struct in46_addr *addr) {
 static inline bool in46a_is_v4(const struct in46_addr *addr) {
 	return addr->len == sizeof(struct in_addr);
 }
+
+void in46a_from_gsna(const struct ul16_t *in, struct in46_addr *dst);