Supplementary Services (de)activation, interrogation added

These patches enhance the Supplementary Service (SS) processing from
only being able to handle USSD to other SS, specifically activation,
deactivation and interrogation of those SS. Registration is not yet
implemented.

include/osmocom/gsm/protocol/gsm_09_02.h has been added with needed
values for SS.

Modified by Harald Welte to keep the old ussd-only functiosn for API/ABI
stability.

1 files changed, 15 insertions, 1 deletions

diff --git a/include/osmocom/gsm/gsm0480.h b/include/osmocom/gsm/gsm0480.h
index b1281629..deac3225 100644
--- a/include/osmocom/gsm/gsm0480.h
+++ b/include/osmocom/gsm/gsm0480.h
@@ -1,19 +1,33 @@
 #pragma once
 
+#include <osmocom/core/defs.h>
 #include <osmocom/core/msgb.h>
 #include <osmocom/gsm/protocol/gsm_04_08.h>
 #include <osmocom/gsm/protocol/gsm_04_80.h>
 
 #define MAX_LEN_USSD_STRING	31
 
+/* deprecated */
 struct ussd_request {
 	char text[MAX_LEN_USSD_STRING + 1];
 	uint8_t transaction_id;
 	uint8_t invoke_id;
 };
 
+/* deprecated */
 int gsm0480_decode_ussd_request(const struct gsm48_hdr *hdr, uint16_t len,
-				struct ussd_request *request);
+				struct ussd_request *request) OSMO_DEPRECATED("Use gsm0480_decode_ss_request() instead");
+
+struct ss_request {
+	uint8_t opcode;
+	uint8_t ss_code;
+	uint8_t ussd_text[MAX_LEN_USSD_STRING + 1];
+	uint8_t transaction_id;
+	uint8_t invoke_id;
+};
+
+int gsm0480_decode_ss_request(const struct gsm48_hdr *hdr, uint16_t len,
+				struct ss_request *request);
 
 struct msgb *gsm0480_create_ussd_resp(uint8_t invoke_id, uint8_t trans_id, const char *text);
 struct msgb *gsm0480_create_unstructuredSS_Notify(int alertPattern, const char *text);