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authorNeels Hofmeyr <nhofmeyr@sysmocom.de>2016-02-08 22:14:07 +0100
committerNeels Hofmeyr <nhofmeyr@sysmocom.de>2016-03-03 16:19:09 +0100
commitb9e5403ef46171f58390757d002a756bd9d2d202 (patch)
tree59e707165a09c9e73e2059813b62f2f9124118b6 /openbsc/src/libbsc/handover_decision.c
parentb6769b99deb471dc7cb5d26b4d145e42ed7478e1 (diff)
mscsplit: remove bts and lchan pointers from libmsc
The diff between this and master will probably need a lot of review and fixes. The current state does compile, but I expect pretty much everything to be broken now. Future development will reinstate proper functionality piecemeal. The first goal is to get basic signalling to work, then SMS. The voice control (RTP) is completely disabled now (see "#if BEFORE_MSCSPLIT") and will be fixed last AFAICT.
Diffstat (limited to 'openbsc/src/libbsc/handover_decision.c')
-rw-r--r--openbsc/src/libbsc/handover_decision.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/openbsc/src/libbsc/handover_decision.c b/openbsc/src/libbsc/handover_decision.c
index 24c0f79cb..2835d893a 100644
--- a/openbsc/src/libbsc/handover_decision.c
+++ b/openbsc/src/libbsc/handover_decision.c
@@ -33,6 +33,27 @@
#include <openbsc/handover.h>
#include <osmocom/gsm/gsm_utils.h>
+/* Get reference to a neighbor cell on a given BCCH ARFCN */
+static struct gsm_bts *gsm_bts_neighbor(const struct gsm_bts *bts,
+ uint16_t arfcn, uint8_t bsic)
+{
+ struct gsm_bts *neigh;
+ /* FIXME: use some better heuristics here to determine which cell
+ * using this ARFCN really is closest to the target cell. For
+ * now we simply assume that each ARFCN will only be used by one
+ * cell */
+
+ llist_for_each_entry(neigh, &bts->network->bts_list, list) {
+ /* FIXME: this is probably returning the same bts again!? */
+ if (neigh->c0->arfcn == arfcn &&
+ neigh->bsic == bsic)
+ return neigh;
+ }
+
+ return NULL;
+}
+
+
/* issue handover to a cell identified by ARFCN and BSIC */
static int handover_to_arfcn_bsic(struct gsm_lchan *lchan,
uint16_t arfcn, uint8_t bsic)