lynxis lazus has uploaded this change for review.

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ranap: split mmctx related iu events into own function

In preparation of Routing Areas for Iu, split
off mmctx related events into an own function.
All mmctx related events must contain a valid ctx or are
otherwise invalid.

Change-Id: Ie6f131d29da299f09e897240ec5c39a395ce6f1b
---
M src/sgsn/gprs_ranap.c
1 file changed, 24 insertions(+), 1 deletion(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/99/40699/1

diff --git a/src/sgsn/gprs_ranap.c b/src/sgsn/gprs_ranap.c
index af764de..d721255 100644
--- a/src/sgsn/gprs_ranap.c
+++ b/src/sgsn/gprs_ranap.c
@@ -137,11 +137,17 @@
 	return -1;
 }
 
-int sgsn_ranap_iu_event(struct ranap_ue_conn_ctx *ctx, enum ranap_iu_event_type type, void *data)
+static int sgsn_ranap_iu_event_mmctx(struct ranap_ue_conn_ctx *ctx, enum ranap_iu_event_type type, void *data)
 {
 	struct sgsn_mm_ctx *mm;
 	int rc = -1;
 
+	if (!ctx) {
+		LOGIUP(ctx, LOGL_ERROR, "NULL ctx given for IU event %s\n",
+		       ranap_iu_event_type_str(type));
+		return rc;
+	}
+
 	mm = sgsn_mm_ctx_by_ue_ctx(ctx);
 	if (!mm) {
 		LOGIUP(ctx, LOGL_NOTICE, "Cannot find mm ctx for IU event %s\n",
@@ -193,6 +199,23 @@
 	return rc;
 }
 
+
+int sgsn_ranap_iu_event(struct ranap_ue_conn_ctx *ctx, enum ranap_iu_event_type type, void *data)
+{
+	struct ranap_iu_event_new_area *new_area;
+
+	switch (type) {
+	case RANAP_IU_EVENT_RAB_ASSIGN:
+	case RANAP_IU_EVENT_IU_RELEASE:
+	case RANAP_IU_EVENT_LINK_INVALIDATED:
+	case RANAP_IU_EVENT_SECURITY_MODE_COMPLETE:
+		return sgsn_ranap_iu_event_mmctx(ctx, type, data);
+	default:
+		LOGP(DRANAP, LOGL_NOTICE, "Iu: Unknown event received: type: %d\n", type);
+		return -1;
+	}
+}
+
 void sgsn_ranap_iu_free(struct sgsn_mm_ctx *ctx)
 {
 	if (!ctx)

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