Move processing of CLASSMARK CHANGE behind bsc_api
This prevents osmo-bsc from sending RR messages to the MSC and rather
process them inside the BSC and turn them into BSSAP CM UPDATE.
diff --git a/openbsc/src/libbsc/bsc_api.c b/openbsc/src/libbsc/bsc_api.c
index ad4391d..bb13747 100644
--- a/openbsc/src/libbsc/bsc_api.c
+++ b/openbsc/src/libbsc/bsc_api.c
@@ -418,6 +418,44 @@
rr_failure);
}
+static void handle_classmark_chg(struct gsm_subscriber_connection *conn,
+ struct msgb *msg)
+{
+ struct bsc_api *api = msg->lchan->ts->trx->bts->network->bsc_api;
+ struct gsm48_hdr *gh = msgb_l3(msg);
+ unsigned int payload_len = msgb_l3len(msg) - sizeof(*gh);
+ uint8_t cm2_len, cm3_len = 0;
+ uint8_t *cm2, *cm3 = NULL;
+
+ DEBUGP(DRR, "CLASSMARK CHANGE ");
+
+ /* classmark 2 */
+ cm2_len = gh->data[0];
+ cm2 = &gh->data[1];
+ DEBUGPC(DRR, "CM2(len=%u) ", cm2_len);
+
+ if (payload_len > cm2_len + 1) {
+ /* we must have a classmark3 */
+ if (gh->data[cm2_len+1] != 0x20) {
+ DEBUGPC(DRR, "ERR CM3 TAG\n");
+ return -EINVAL;
+ }
+ if (cm2_len > 3) {
+ DEBUGPC(DRR, "CM2 too long!\n");
+ return -EINVAL;
+ }
+
+ cm3_len = gh->data[cm2_len+2];
+ cm3 = &gh->data[cm2_len+3];
+ if (cm3_len > 14) {
+ DEBUGPC(DRR, "CM3 len %u too long!\n", cm3_len);
+ return -EINVAL;
+ }
+ DEBUGPC(DRR, "CM3(len=%u)\n", cm3_len);
+ }
+ api->classmark_chg(conn, cm2, cm2_len, cm3, cm3_len);
+}
+
static void dispatch_dtap(struct gsm_subscriber_connection *conn,
uint8_t link_id, struct msgb *msg)
{
@@ -462,6 +500,10 @@
}
return;
break;
+ case GSM48_MT_RR_CLSM_CHG:
+ handle_classmark_chg(conn, msg);
+ return;
+ break;
}
break;
case GSM48_PDISC_MM: