gsm0808: add BSSMAP Cell Identifier matching API
Add
* osmo_lai_cmp() (to use in gsm0808_cell_id_u_matches())
* osmo_cgi_cmp() (to use in gsm0808_cell_id_u_matches())
* gsm0808_cell_id_u_match() (to re-use for single IDs and lists)
* gsm0808_cell_ids_match()
* gsm0808_cell_id_matches_list()
* Unit tests in gsm0808_test.c
Rationale:
For inter-BSC handover, it is interesting to find matches between *differing*
Cell Identity kinds. For example, if a cell as CGI 23-42-3-5, and a HO for
LAC-CI 3-5 should be handled, we need to see the match.
This is most interesting for osmo-msc, i.e. to direct the BSSMAP Handover
Request towards the correct BSC or MSC.
It is also interesting for osmo-bsc's VTY interface, to be able to manage
cells' neighbors and to trigger manual handovers by various Cell Identity
handles, as the user would expect them.
Change-Id: I5535f0d149c2173294538df75764dd181b023312
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index c440a79..ea8c9be 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -210,6 +210,8 @@
gsm0808_cell_id_list_name_buf;
gsm0808_cell_id_discr_names;
gsm0808_cell_id_u_name;
+gsm0808_cell_ids_match;
+gsm0808_cell_id_matches_list;
gsm0808_chan_type_to_speech_codec;
gsm0808_speech_codec_from_chan_type;
gsm0808_sc_cfg_from_gsm48_mr_cfg;