introduce trans_lchan_change() to update transaction about lchan change
diff --git a/openbsc/include/openbsc/transaction.h b/openbsc/include/openbsc/transaction.h
index 961a649..6314f98 100644
--- a/openbsc/include/openbsc/transaction.h
+++ b/openbsc/include/openbsc/transaction.h
@@ -65,4 +65,9 @@
int trans_assign_trans_id(struct gsm_subscriber *subscr,
u_int8_t protocol, u_int8_t ti_flag);
+
+/* update all transactions to use a different LCHAN, e.g.
+ * after handover has succeeded */
+int trans_lchan_change(struct gsm_lchan *lchan_old,
+ struct gsm_lchan *lchan_new);
#endif