nat: Remove magic numbers, use enum values for conn classification

Remove the usage of 0, 1, 2 and start using enum values. We can
still assume con_local is a number.

1 files changed, 10 insertions, 0 deletions

diff --git a/openbsc/include/openbsc/bsc_nat.h b/openbsc/include/openbsc/bsc_nat.h
index dd29c7aa5..02290231d 100644
--- a/openbsc/include/openbsc/bsc_nat.h
+++ b/openbsc/include/openbsc/bsc_nat.h
@@ -55,6 +55,16 @@ enum {
 };
 
 /*
+ * Is this terminated to the MSC, to the local machine (release
+ * handling for IMSI filtering) or to a USSD provider?
+ */
+enum {
+	NAT_CON_END_MSC,
+	NAT_CON_END_LOCAL,
+	NAT_CON_END_USSD,
+};
+
+/*
  * Per BSC data structure
  */
 struct bsc_connection {