Implement gsm_bts_neighbor() function to determine neighbor BTS

We will need this for the actual handover algorithm implementation, as we will
only know the current BTS and the BCCH ARFCN of the strongest cell in the
measurement reports.  Using this new function, we can resolve the matching
gsm_bts.

1 files changed, 4 insertions, 0 deletions

diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index 52c6a030b..33ec328fc 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -501,6 +501,10 @@ struct gsm_bts *gsm_bts_alloc(struct gsm_network *net, enum gsm_bts_type type,
 struct gsm_bts_trx *gsm_bts_trx_alloc(struct gsm_bts *bts);
 
 struct gsm_bts *gsm_bts_num(struct gsm_network *net, int num);
+
+/* Get reference to a neighbor cell on a given BCCH ARFCN */
+struct gsm_bts *gsm_bts_neighbor(const struct gsm_bts *bts, u_int16_t arfcn);
+
 struct gsm_bts_trx *gsm_bts_trx_num(struct gsm_bts *bts, int num);
 
 const char *gsm_pchan_name(enum gsm_phys_chan_config c);