1 files changed, 34 insertions, 0 deletions
diff --git a/include/osmocom/msc/gsup_client_mux.h b/include/osmocom/msc/gsup_client_mux.h
new file mode 100644
index 000000000..07f17c260
--- /dev/null
+++ b/include/osmocom/msc/gsup_client_mux.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <osmocom/gsm/gsup.h>
+#include <osmocom/msc/gsup_client_mux.h>
+
+struct gsup_client_mux;
+struct ipaccess_unit;
+
+struct gsup_client_mux_rx_cb {
+	int (* func )(struct gsup_client_mux *gcm, void *data, const struct osmo_gsup_message *gsup_msg);
+	void *data;
+};
+
+/* A GSUP client shared between code paths for various GSUP Message Classes.
+ * The main task is to dispatch GSUP messages to code paths corresponding to the respective Message Class, i.e.
+ * subscriber management, SMS, SS/USSD and inter-MSC messaging.
+ * If a GSUP Message Class IE is present in the message, the received message is dispatched directly to the rx_cb entry
+ * for that Message Class. Otherwise, the Message Class is determined by a switch() on the Message Type.*/
+struct gsup_client_mux {
+	struct osmo_gsup_client *gsup_client;
+
+	/* Target clients by enum osmo_gsup_message_class */
+	struct gsup_client_mux_rx_cb rx_cb[OSMO_GSUP_MESSAGE_CLASS_ARRAYSIZE];
+};
+
+struct gsup_client_mux *gsup_client_mux_alloc(void *talloc_ctx);
+int gsup_client_mux_start(struct gsup_client_mux *gcm, const char *gsup_server_addr_str, uint16_t gsup_server_port,
+			  struct ipaccess_unit *ipa_dev);
+
+int gsup_client_mux_tx(struct gsup_client_mux *gcm, const struct osmo_gsup_message *gsup_msg);
+void gsup_client_mux_tx_error_reply(struct gsup_client_mux *gcm, const struct osmo_gsup_message *gsup_orig,
+				    enum gsm48_gmm_cause cause);
+
+int gsup_client_mux_rx(struct osmo_gsup_client *gsup_client, struct msgb *msg);