1 files changed, 68 insertions, 0 deletions
diff --git a/include/osmocom/msc/neighbor_ident.h b/include/osmocom/msc/neighbor_ident.h
new file mode 100644
index 000000000..8cd74ab57
--- /dev/null
+++ b/include/osmocom/msc/neighbor_ident.h
@@ -0,0 +1,68 @@
+/* Manage identity of neighboring BSS cells for inter-BSC handover */
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <osmocom/core/linuxlist.h>
+#include <osmocom/gsm/gsm0808.h>
+#include <osmocom/sigtran/sccp_sap.h>
+
+struct vty;
+struct gsm_network;
+
+enum msc_neighbor_type {
+	MSC_NEIGHBOR_TYPE_NONE = 0,
+	MSC_NEIGHBOR_TYPE_LOCAL_RAN_PEER,
+	MSC_NEIGHBOR_TYPE_REMOTE_MSC,
+};
+
+struct msc_ipa_name {
+	char buf[64];
+	size_t len;
+};
+
+int msc_ipa_name_from_str(struct msc_ipa_name *min, const char *name);
+int msc_ipa_name_cmp(const struct msc_ipa_name *a, const struct msc_ipa_name *b);
+
+struct neighbor_ident_addr {
+	enum osmo_rat_type ran_type;
+	enum msc_neighbor_type type;
+	union {
+		char local_ran_peer_pc_str[23];
+		struct msc_ipa_name remote_msc_ipa_name;
+	};
+};
+
+struct neighbor_ident_entry {
+	struct llist_head entry;
+
+	struct neighbor_ident_addr addr;
+
+	/* A list of struct cell_ids_entry. A gsm0808_cell_id_list2 would in principle suffice, but to support
+	 * storing more than 127 cell ids and to allow storing IDs of differing types, have a list of any number of
+	 * gsm0808_cell_id_list2. */
+	struct llist_head cell_ids;
+};
+
+void neighbor_ident_init(struct gsm_network *net);
+const char *neighbor_ident_addr_name(const struct neighbor_ident_addr *nia);
+
+const struct neighbor_ident_entry *neighbor_ident_add(struct llist_head *ni_list,
+						      const struct neighbor_ident_addr *nia,
+						      const struct gsm0808_cell_id *cid);
+
+const struct neighbor_ident_entry *neighbor_ident_find_by_cell(const struct llist_head *ni_list,
+							       enum osmo_rat_type ran_type,
+							       const struct gsm0808_cell_id *cell_id);
+
+const struct neighbor_ident_entry *neighbor_ident_find_by_addr(const struct llist_head *ni_list,
+							       const struct neighbor_ident_addr *nia);
+
+void neighbor_ident_del(const struct neighbor_ident_entry *nie);
+
+void neighbor_ident_clear(struct llist_head *ni_list);
+
+void neighbor_ident_vty_init(struct gsm_network *net);
+void neighbor_ident_vty_write(struct vty *vty);
+