gsm_utils: add enum osmo_rat_type, from osmo-msc enum ran_type

In the MSC, we have RAN types GERAN_A and UTRAN_IU, now we need a similar enum
in osmo-hlr's GSUP client.

Naming: in the MAP specifications, the RAN type is mostly called RAT type,
(Radio Access Network vs. Radio Access Technology?). Since GSUP is more about
MAP messages, I'm calling the enum osmo_rat_type.

Rationale: osmo-msc and osmo-sgsn want to tell the osmo-hlr which RAT a
subscriber is calling on. A subsequent patch will extend the GSUP protocol and
add a RAT types IE.

Change-Id: I659687aef7a4d67ca372a39fef31dee07aed7631

1 files changed, 13 insertions, 0 deletions

diff --git a/include/osmocom/gsm/gsm_utils.h b/include/osmocom/gsm/gsm_utils.h
index fe5903db..095ac41a 100644
--- a/include/osmocom/gsm/gsm_utils.h
+++ b/include/osmocom/gsm/gsm_utils.h
@@ -241,3 +241,16 @@ int gsm_7bit_decode_ussd(char *decoded, const uint8_t *user_data, uint8_t length
 int gsm_7bit_encode(uint8_t *result, const char *data) OSMO_DEPRECATED("Use gsm_7bit_encode_n() instead");
 int gsm_7bit_encode_ussd(uint8_t *result, const char *data, int *octets_written) OSMO_DEPRECATED("Use gsm_7bit_encode_n_ussd() instead");
 int gsm_7bit_encode_oct(uint8_t *result, const char *data, int *octets_written) OSMO_DEPRECATED("Use gsm_7bit_encode_n() instead");
+
+enum osmo_rat_type {
+	OSMO_RAT_UNKNOWN = 0,
+	OSMO_RAT_GERAN_A,
+	OSMO_RAT_UTRAN_IU,
+
+	/* keep this last */
+	OSMO_RAT_COUNT
+};
+
+extern const struct value_string osmo_rat_type_names[];
+inline static const char *osmo_rat_type_name(enum osmo_rat_type val)
+{ return get_value_string(osmo_rat_type_names, val); }