libgb: don't call directly into GMM / LLC layer
Instead of direct function calls to individual functions, we now
generate primitives (osmo_prim) and send them to one
application-provided function "bssgp_prim_cb()"
diff --git a/openbsc/src/gprs/sgsn_main.c b/openbsc/src/gprs/sgsn_main.c
index a579e7e..5558879 100644
--- a/openbsc/src/gprs/sgsn_main.c
+++ b/openbsc/src/gprs/sgsn_main.c
@@ -49,6 +49,7 @@
#include <openbsc/vty.h>
#include <openbsc/sgsn.h>
#include <openbsc/gprs_llc.h>
+#include <openbsc/gprs_gmm.h>
#include <gtp.h>
@@ -99,6 +100,34 @@
return rc;
}
+/* call-back function for the BSSGP protocol */
+int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
+{
+ struct osmo_bssgp_prim *bp;
+ bp = container_of(oph, struct osmo_bssgp_prim, oph);
+
+ switch (oph->sap) {
+ case SAP_BSSGP_LL:
+ switch (oph->primitive) {
+ case PRIM_BSSGP_UL_UD:
+ return gprs_llc_rcvmsg(oph->msg, bp->tp);
+ }
+ break;
+ case SAP_BSSGP_GMM:
+ switch (oph->primitive) {
+ case PRIM_BSSGP_GMM_SUSPEND:
+ return gprs_gmm_rx_suspend(bp->ra_id, bp->tlli);
+ case PRIM_BSSGP_GMM_RESUME:
+ return gprs_gmm_rx_resume(bp->ra_id, bp->tlli,
+ *bp->u.resume.suspend_ref);
+ }
+ break;
+ case SAP_BSSGP_NM:
+ break;
+ }
+ return 0;
+}
+
static void signal_handler(int signal)
{
fprintf(stdout, "signal %u received\n", signal);