add osmo_sccp_inst_addr_name(), a variant of osmo_sccp_addr_name()

It can be cumbersome to derive the ss7 instance needed to pass to
sccp_addr_name(), because struct osmo_sccp_instance is opaque and only
available in sccp_internal.h, within libosmo-sccp.

Add osmo_sccp_inst_addr_name() which derives the ss7 instance from the internal
knowledge of the osmo_sccp_instance struct. This can save calls to
osmo_ss7_instance_find() just to do some logging of an sccp address.

Naming: first I thought to pick osmo_sccp_addr_name2(), but for some of the
string composing functions, adding a 2 already means that it is identical but
using a second static buffer (to be used twice within the same printf).

Change-Id: I70ec5c8b42682a23f11a5820431c7e34e225709b

1 files changed, 7 insertions, 0 deletions

diff --git a/src/sccp_helpers.c b/src/sccp_helpers.c
index 4b24392..f752e2a 100644
--- a/src/sccp_helpers.c
+++ b/src/sccp_helpers.c
@@ -324,3 +324,10 @@ char *osmo_sccp_addr_name(const struct osmo_ss7_instance *ss7, const struct osmo
 
 	return buf;
 }
+
+/* Derive ss7 from the sccp instance and call osmo_sccp_addr_name() with that.
+ * If sccp is passed as NULL, simply use the default point code format. */
+char *osmo_sccp_inst_addr_name(const struct osmo_sccp_instance *sccp, const struct osmo_sccp_addr *addr)
+{
+	return osmo_sccp_addr_name(sccp? sccp->ss7 : NULL, addr);
+}