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Diffstat (limited to 'openbsc/src/gprs/gprs_sgsn.c')
-rw-r--r--openbsc/src/gprs/gprs_sgsn.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/openbsc/src/gprs/gprs_sgsn.c b/openbsc/src/gprs/gprs_sgsn.c
index e5a54d9b4..8558029a1 100644
--- a/openbsc/src/gprs/gprs_sgsn.c
+++ b/openbsc/src/gprs/gprs_sgsn.c
@@ -667,6 +667,44 @@ static void drop_one_pdp(struct sgsn_pdp_ctx *pdp)
}
}
+/*
+ * High-level function to be called for PDP deactivation initiated from SGSN VTY.
+ * When there are PDP contexts present for a MM context, PDP context will be
+ * deactivated along with GMM Detach(MM context deletion).
+ * If there are no PDP present, MM context will be deleted to avoid further
+ * PDP context activation for that MS.
+ */
+void drop_gmm_ctx_for_ms(const char *imsi)
+{
+ OSMO_ASSERT(imsi != NULL);
+ struct sgsn_mm_ctx *mm;
+ struct sgsn_pdp_ctx *pdp;
+
+ /* Search the MM context subscriber */
+ mm = sgsn_mm_ctx_by_imsi(imsi);
+ LOGMMCTXP(LOGL_INFO, mm,
+ "SGSN intiated Deactivate PDP request for %s\n", imsi);
+ if (mm) {
+ /* Search the PDP for this subscriber */
+ if (llist_empty(&mm->pdp_list)) {
+ /*
+ * Deleting mm context for the subscriber when no PDP
+ * context is present.
+ */
+ gsm0408_gprs_access_cancelled(mm, GMM_CAUSE_GPRS_NOTALLOWED);
+ LOGMMCTXP(LOGL_NOTICE, mm, "No PDP context to deactivate\n");
+ } else {
+ llist_for_each_entry(pdp, &mm->pdp_list, list) {
+ gsm48_tx_gsm_deact_pdp_req(pdp, GSM_CAUSE_DEACT_REGULAR);
+ LOGPDPCTXP(LOGL_INFO, pdp, "PDP Deactivation "
+ "Successful\n");
+ }
+ }
+ } else
+ LOGMMCTXP(LOGL_NOTICE, mm,
+ "No MM context to deactivate for %s\n", imsi);
+}
+
/* High-level function to be called in case a GGSN has disappeared or
* otherwise lost state (recovery procedure) */
int drop_all_pdp_for_ggsn(struct sgsn_ggsn_ctx *ggsn)