SGSN: Avoid duplicate MM contexts in case MS and SGSN disagree on P-TMSI
diff --git a/openbsc/src/gprs/gprs_sgsn.c b/openbsc/src/gprs/gprs_sgsn.c
index f558003..142ff47 100644
--- a/openbsc/src/gprs/gprs_sgsn.c
+++ b/openbsc/src/gprs/gprs_sgsn.c
@@ -173,6 +173,21 @@
return ctx;
}
+void sgsn_mm_ctx_free(struct sgsn_mm_ctx *mm)
+{
+ struct sgsn_pdp_ctx *pdp, *pdp2;
+
+ /* Unlink from global list of MM contexts */
+ llist_del(&mm->list);
+
+ /* Free all PDP contexts */
+ llist_for_each_entry_safe(pdp, pdp2, &mm->pdp_list, list)
+ sgsn_pdp_ctx_free(pdp);
+
+ rate_ctr_group_free(mm->ctrg);
+
+ talloc_free(mm);
+}
/* look up PDP context by MM context and NSAPI */
struct sgsn_pdp_ctx *sgsn_pdp_ctx_by_nsapi(const struct sgsn_mm_ctx *mm,