1 files changed, 46 insertions, 0 deletions
diff --git a/include/osmocom/msc/msc_i.h b/include/osmocom/msc/msc_i.h
new file mode 100644
index 000000000..a2a5fb133
--- /dev/null
+++ b/include/osmocom/msc/msc_i.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include <osmocom/core/utils.h>
+#include <osmocom/gsm/mncc.h>
+
+#include <osmocom/msc/msc_roles.h>
+
+struct ran_infra;
+struct mncc_call;
+
+#define LOG_MSC_I(MSC_I, LEVEL, FMT, ARGS ...) \
+		LOG_MSC_I_CAT(MSC_I, (MSC_I) ? (MSC_I)->c.ran->log_subsys : DMSC, LEVEL, FMT, ## ARGS)
+#define LOG_MSC_I_CAT(MSC_I, SUBSYS, LEVEL, FMT, ARGS ...) \
+		LOGPFSMSL((MSC_I) ? (MSC_I)->c.fi : NULL, SUBSYS, LEVEL, FMT, ## ARGS)
+#define LOG_MSC_I_CAT_SRC(MSC_I, SUBSYS, LEVEL, SRCFILE, LINE, FMT, ARGS ...) \
+		LOGPFSMSLSRC((MSC_I) ? (MSC_I)->c.fi : NULL, SUBSYS, LEVEL, SRCFILE, LINE, FMT, ## ARGS)
+
+struct msc_i {
+	/* struct msc_role_common must remain at start */
+	struct msc_role_common c;
+	struct ran_conn *ran_conn;
+
+	struct {
+		struct call_leg *call_leg;
+		struct mncc_call *mncc_forwarding_to_remote_cn;
+	} inter_msc;
+};
+
+osmo_static_assert(offsetof(struct msc_i, c) == 0, msc_role_common_first_member_of_msc_i);
+
+enum msc_i_state {
+	MSC_I_ST_READY,
+	MSC_I_ST_CLEARING,
+	MSC_I_ST_CLEARED,
+};
+
+struct msc_i *msc_i_alloc(struct msub *msub, struct ran_infra *ran);
+void msc_i_set_ran_conn(struct msc_i *msc_i, struct ran_conn *ran_conn);
+
+void msc_i_clear(struct msc_i *msc_i);
+void msc_i_cleared(struct msc_i *msc_i);
+
+int msc_i_down_l2(struct msc_i *msc_i, struct msgb *l2);
+
+struct gsm_network *msc_i_net(const struct msc_i *msc_i);
+struct vlr_subscr *msc_i_vsub(const struct msc_i *msc_i);