improve API for osmo_routing_area_id
Code review for [1] has asked for providing proper API for struct
osmo_routing_area_id.
For historical reasons, we have struct gprs_ra_id and
struct osmo_routing_area_id serving the exact same purpose: represent a
decoded 3GPP TS 24.008 ยง 10.5.5.15 Routing area identification.
The "better" one is struct osmo_routing_area_id: it allows using API
like osmo_plmn_cmp(), because it is made up of meaningful sub-structs.
Implement de/coding using the functions already available for the
sub-struct osmo_location_area_id, and simply add the RAC.
Add a test in gsm0408_test.c.
Note that other utility functions are already available for struct
osmo_routing_area_id: osmo_rai_name2(), osmo_rai_cmp().
There is no real need to deprecate struct gprs_ra_id, because there is
not really anything wrong with it. It just isn't as well integrated with
other utility API as struct osmo_routing_area_id is. Just add comments.
[1] osmo-hnbgw.git:
cnpool: extract Mobile Identity from RANAP payload
https://gerrit.osmocom.org/c/osmo-hnbgw/+/33133
I373d665c9684b607207f68094188eab63209db51
Change-Id: Ic5e0406d9e20b0d4e1372fa30ba11a1e69f5cc94
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 0e45dc1..1eea819 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -415,6 +415,9 @@
osmo_mobile_identity_encoded_len;
osmo_mobile_identity_encode_buf;
osmo_mobile_identity_encode_msgb;
+osmo_routing_area_id_decode;
+osmo_routing_area_id_encode_buf;
+osmo_routing_area_id_encode_msgb;
gsm48_mm_att_tlvdef;
gsm48_number_of_paging_subchannels;
gsm48_parse_ra;