move gsm_bts_get_cbch() to gsm_data_shared() as its needed in osmo-bts
diff --git a/openbsc/src/libcommon/gsm_data_shared.c b/openbsc/src/libcommon/gsm_data_shared.c
index 210d228..ad3d7cb 100644
--- a/openbsc/src/libcommon/gsm_data_shared.c
+++ b/openbsc/src/libcommon/gsm_data_shared.c
@@ -544,3 +544,24 @@
{
return gsm_ts2chan_nr(lchan->ts, lchan->nr);
}
+
+/* return the gsm_lchan for the CBCH (if it exists at all) */
+struct gsm_lchan *gsm_bts_get_cbch(struct gsm_bts *bts)
+{
+ struct gsm_lchan *lchan = NULL;
+ struct gsm_bts_trx *trx = bts->c0;
+
+ if (trx->ts[0].pchan == GSM_PCHAN_CCCH_SDCCH4_CBCH)
+ lchan = &trx->ts[0].lchan[2];
+ else {
+ int i;
+ for (i = 0; i < 8; i++) {
+ if (trx->ts[i].pchan == GSM_PCHAN_SDCCH8_SACCH8C_CBCH) {
+ lchan = &trx->ts[i].lchan[2];
+ break;
+ }
+ }
+ }
+
+ return lchan;
+}