1 files changed, 60 insertions, 0 deletions
diff --git a/include/osmocom/msc/msc_t.h b/include/osmocom/msc/msc_t.h
new file mode 100644
index 000000000..39b3abca0
--- /dev/null
+++ b/include/osmocom/msc/msc_t.h
@@ -0,0 +1,60 @@
+#pragma once
+
+#include <osmocom/msc/msc_roles.h>
+
+struct ran_conn;
+struct ran_infra;
+struct ran_peer;
+struct gsm_mncc;
+struct mncc_call;
+
+#define LOG_MSC_T(MSC_T, LEVEL, FMT, ARGS ...) \
+		LOG_MSC_T_CAT(MSC_T, (MSC_T) ? (MSC_T)->c.ran->log_subsys : DMSC, LEVEL, FMT, ## ARGS)
+#define LOG_MSC_T_CAT(MSC_T, SUBSYS, LEVEL, FMT, ARGS ...) \
+		LOGPFSMSL((MSC_T) ? (MSC_T)->c.fi : NULL, SUBSYS, LEVEL, FMT, ## ARGS)
+#define LOG_MSC_T_CAT_SRC(MSC_T, SUBSYS, LEVEL, SRCFILE, LINE, FMT, ARGS ...) \
+		LOGPFSMSLSRC((MSC_T) ? (MSC_T)->c.fi : NULL, SUBSYS, LEVEL, SRCFILE, LINE, FMT, ## ARGS)
+
+struct msc_t {
+	/* struct msc_role_common must remain at start */
+	struct msc_role_common c;
+
+	struct ran_conn *ran_conn;
+
+	struct {
+		uint8_t chosen_channel;
+		uint8_t chosen_encr_alg;
+		uint8_t chosen_speech_version;
+	} geran;
+
+	struct {
+		struct an_apdu ho_request;
+		struct gsm0808_cell_id cell_id_target;
+		uint32_t callref;
+		char handover_number[16]; /* No libosmocore definition for MSISDN_MAXLEN? */
+		struct call_leg *call_leg;
+		struct mncc_call *mncc_forwarding_to_remote_cn;
+	} inter_msc;
+
+	struct osmo_gsm48_classmark classmark;
+	bool ho_success;
+	bool ho_fail_sent;
+};
+
+enum msc_t_state {
+	MSC_T_ST_PENDING_FIRST_CO_INITIAL_MSG,
+	MSC_T_ST_WAIT_LOCAL_RTP,
+	MSC_T_ST_WAIT_HO_REQUEST_ACK,
+	MSC_T_ST_WAIT_HO_COMPLETE,
+};
+
+struct msc_t *msc_t_alloc_without_ran_peer(struct msub *msub, struct ran_infra *ran);
+int msc_t_set_ran_peer(struct msc_t *msc_t, struct ran_peer *ran_peer);
+struct msc_t *msc_t_alloc(struct msub *msub, struct ran_peer *ran_peer);
+int msc_t_down_l2_co(struct msc_t *msc_t, const struct an_apdu *an_apdu, bool initial);
+void msc_t_clear(struct msc_t *msc_t);
+
+struct gsm_network *msc_t_net(const struct msc_t *msc_t);
+struct vlr_subscr *msc_t_vsub(const struct msc_t *msc_t);
+
+struct mncc_call *msc_t_check_call_to_handover_number(const struct gsm_mncc *msg);