1 files changed, 36 insertions, 0 deletions
diff --git a/include/osmocom/msc/e_link.h b/include/osmocom/msc/e_link.h
new file mode 100644
index 000000000..88e41a7aa
--- /dev/null
+++ b/include/osmocom/msc/e_link.h
@@ -0,0 +1,36 @@
+/* E-interface messaging over a GSUP connection */
+#pragma once
+
+#include <osmocom/gsm/gsup.h>
+#include <osmocom/msc/msc_roles.h>
+
+struct osmo_fsm_inst;
+struct gsm_network;
+struct vlr_instance;
+
+/* E-interface: connection to a remote MSC via GSUP */
+struct e_link {
+	struct osmo_fsm_inst *msc_role;
+	struct gsup_client_mux *gcm;
+	uint8_t *remote_name;
+	size_t remote_name_len;
+};
+
+struct e_link *e_link_alloc(struct gsup_client_mux *gcm, struct osmo_fsm_inst *msc_role,
+			    const uint8_t *remote_name, size_t remote_name_len);
+void e_link_assign(struct e_link *e, struct osmo_fsm_inst *msc_role);
+void e_link_free(struct e_link *e);
+
+int e_prep_gsup_msg(struct e_link *e, enum msc_role from_role, struct osmo_gsup_message *gsup_msg);
+int e_tx(struct e_link *e, const struct osmo_gsup_message *gsup_msg);
+
+const char *e_link_name(struct e_link *e);
+
+void msc_a_i_t_gsup_init(struct gsm_network *net);
+
+enum osmo_gsup_entity msc_role_to_gsup_entity(enum msc_role role);
+enum msc_role gsup_entity_to_msc_role(enum osmo_gsup_entity entity);
+int gsup_msg_assign_an_apdu(struct osmo_gsup_message *gsup_msg, struct an_apdu *an_apdu);
+
+struct msgb *gsup_msg_to_msgb(const struct osmo_gsup_message *gsup_msg);
+void gsup_msg_to_an_apdu(struct an_apdu *an_apdu, const struct osmo_gsup_message *gsup_msg);