[GPRS] SGSN: Pass BSSGP SUSPEND/RESUME up to GMM and alter MMCTX state
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index ad9a546..17d2ed0 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -1270,3 +1270,51 @@
return rc;
}
+
+int gprs_gmm_rx_suspend(struct gprs_ra_id *raid, uint32_t tlli)
+{
+ struct sgsn_mm_ctx *mmctx;
+
+ mmctx = sgsn_mm_ctx_by_tlli(tlli, raid);
+ if (!mmctx) {
+ LOGP(DMM, LOGL_NOTICE, "SUSPEND request for unknown "
+ "TLLI=%08x\n", tlli);
+ return -EINVAL;
+ }
+
+ if (mmctx->mm_state != GMM_REGISTERED_NORMAL) {
+ LOGP(DMM, LOGL_NOTICE, "SUSPEND request while state "
+ "!= REGISTERED (TLLI=%08x)\n", tlli);
+ return -EINVAL;
+ }
+
+ /* Transition from REGISTERED_NORMAL to REGISTERED_SUSPENDED */
+ mmctx->mm_state = GMM_REGISTERED_SUSPENDED;
+ return 0;
+}
+
+int gprs_gmm_rx_resume(struct gprs_ra_id *raid, uint32_t tlli,
+ uint8_t suspend_ref)
+{
+ struct sgsn_mm_ctx *mmctx;
+
+ /* FIXME: make use of suspend reference? */
+
+ mmctx = sgsn_mm_ctx_by_tlli(tlli, raid);
+ if (!mmctx) {
+ LOGP(DMM, LOGL_NOTICE, "RESUME request for unknown "
+ "TLLI=%08x\n", tlli);
+ return -EINVAL;
+ }
+
+ if (mmctx->mm_state != GMM_REGISTERED_SUSPENDED) {
+ LOGP(DMM, LOGL_NOTICE, "RESUME request while state "
+ "!= SUSPENDED (TLLI=%08x)\n", tlli);
+ /* FIXME: should we not simply ignore it? */
+ return -EINVAL;
+ }
+
+ /* Transition from SUSPENDED to NORMAL */
+ mmctx->mm_state = GMM_REGISTERED_NORMAL;
+ return 0;
+}