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/* 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/ctrl/control_cmd.h>
#include <osmocom/bsc/gsm_data.h>
struct vty;
struct gsm_network;
struct gsm_bts;
struct gsm0808_cell_id_list2;
#define NEIGHBOR_IDENT_KEY_ANY_BTS -1
#define BSIC_ANY 0xff
enum neighbor_type {
NEIGHBOR_TYPE_UNSET = 0,
NEIGHBOR_TYPE_BTS_NR = 1,
NEIGHBOR_TYPE_CELL_ID = 2,
};
/* One line of VTY neighbor configuration as entered by the user.
* One of three variants:
*
* - just the local-BSS neighbor BTS nr:
* neighbor bts 123
*
* - a neighbor cell identifier *without* ARFCN+BSIC:
* neighbor (lac|lac-ci|cgi|cgi-ps) 1 2 3...
* This is an elaborate / BTS-nr-agnostic way of indicating a local-BSS neighbor cell.
*
* - a neighbor cell identifier *with* ARFCN+BSIC:
* neighbor (lac|lac-ci|cgi|cgi-ps) 1 2 3... arfcn 456 bsic (23|any)
* This can either be
* - a remote-BSS neighbor cell, or
* - a super elaborate way of indicating a local-BSS neighbor, if this cell id exists in the local BSS.
*/
struct neighbor {
struct llist_head entry;
enum neighbor_type type;
union {
uint8_t bts_nr;
struct {
struct gsm0808_cell_id id;
bool ab_present;
struct cell_ab ab;
} cell_id;
};
};
int resolve_local_neighbor(struct gsm_bts **local_neighbor_p, const struct gsm_bts *from_bts,
const struct neighbor *neighbor);
int resolve_remote_neighbors(struct gsm_bts *from_bts, const struct cell_ab *target_ab);
int cell_ab_to_str_buf(char *buf, size_t buflen, const struct cell_ab *cell);
char *cell_ab_to_str_c(void *ctx, const struct cell_ab *cell);
bool cell_ab_match(const struct cell_ab *entry, const struct cell_ab *search_for, bool exact_match);
bool cell_ab_valid(const struct cell_ab *cell);
int neighbor_to_str_buf(char *buf, size_t buflen, const struct neighbor *n);
char *neighbor_to_str_c(void *ctx, const struct neighbor *n);
bool neighbor_same(const struct neighbor *a, const struct neighbor *b, bool check_cell_ab);
void bts_cell_ab(struct cell_ab *arfcn_bsic, const struct gsm_bts *bts);
int resolve_neighbors(struct gsm_bts **local_neighbor_p, struct gsm0808_cell_id_list2 *remote_neighbors,
struct gsm_bts *from_bts, const struct cell_ab *target_ab, bool log_errors);
void neighbor_ident_vty_init();
void neighbor_ident_vty_write_bts(struct vty *vty, const char *indent, struct gsm_bts *bts);
void neighbor_ident_vty_write_network(struct vty *vty, const char *indent);
int neighbors_check_cfg();
#define CELL_AB_VTY_PARAMS "arfcn <0-1023> bsic (<0-63>|any)"
#define CELL_AB_VTY_DOC \
"ARFCN of neighbor cell\n" "ARFCN value\n" \
"BSIC of neighbor cell\n" "BSIC value\n" \
"for all BSICs / use any BSIC in this ARFCN\n"
void neighbor_ident_vty_parse_arfcn_bsic(struct cell_ab *ab, const char **argv);
int neighbor_address_resolution(const struct gsm_network *net, const struct cell_ab *ab,
uint16_t lac, uint16_t cell_id,
struct osmo_cell_global_id_ps *res_cgi_ps);
struct ctrl_handle *neighbor_controlif_setup(struct gsm_network *net);
int neighbor_ctrl_cmds_install(struct gsm_network *net);
enum neighbor_ctrl_node {
CTRL_NODE_NEIGH = _LAST_CTRL_NODE,
_LAST_CTRL_NODE_NEIGHBOR
};
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