diff options
Diffstat (limited to 'include/osmocom/bsc/handover.h')
| -rw-r--r-- | include/osmocom/bsc/handover.h | 81 |
1 files changed, 30 insertions, 51 deletions
diff --git a/include/osmocom/bsc/handover.h b/include/osmocom/bsc/handover.h index aa117cc24..322913da4 100644 --- a/include/osmocom/bsc/handover.h +++ b/include/osmocom/bsc/handover.h @@ -5,72 +5,38 @@ #include <osmocom/core/linuxlist.h> #include <osmocom/core/timer.h> #include <osmocom/gsm/gsm_utils.h> +#include <osmocom/gsm/gsm0808.h> #include <osmocom/bsc/neighbor_ident.h> +#include <osmocom/bsc/gsm_data.h> +struct gsm_network; struct gsm_lchan; struct gsm_bts; struct gsm_subscriber_connection; struct gsm_meas_rep mr; -#define LOGPHOLCHANTOLCHAN(old_lchan, new_lchan, level, fmt, args...) \ - LOGP(DHODEC, level, "(BTS %u trx %u arfcn %u ts %u lchan %u %s %s)->(BTS %u trx %u arfcn %u ts %u lchan %u %s) (subscr %s) " fmt, \ - old_lchan->ts->trx->bts->nr, \ - old_lchan->ts->trx->nr, \ - old_lchan->ts->trx->arfcn, \ - old_lchan->ts->nr, \ - old_lchan->nr, \ - gsm_lchant_name(old_lchan->type), \ - gsm48_chan_mode_name(old_lchan->tch_mode), \ - new_lchan->ts->trx->bts->nr, \ - new_lchan->ts->trx->nr, \ - new_lchan->ts->trx->arfcn, \ - new_lchan->ts->nr, \ - new_lchan->nr, \ - gsm_pchan_name(new_lchan->ts->pchan), \ - bsc_subscr_name(old_lchan->conn? old_lchan->conn->bsub : NULL), \ - ## args) - -#define LOGPHO(struct_bsc_handover, level, fmt, args ...) \ - LOGPHOLCHANTOLCHAN(struct_bsc_handover->old_lchan, struct_bsc_handover->new_lchan, level, fmt, ## args) - -enum hodec_id { - HODEC_NONE, - HODEC1 = 1, - HODEC2 = 2, +enum handover_result { + HO_RESULT_OK, + HO_RESULT_FAIL_NO_CHANNEL, + HO_RESULT_FAIL_RR_HO_FAIL, + HO_RESULT_FAIL_TIMEOUT, + HO_RESULT_CONN_RELEASE, + HO_RESULT_ERROR, }; -struct bsc_handover { - struct llist_head list; - - /* Initial details of what is requested */ - struct gsm_lchan *old_lchan; - struct gsm_bts *new_bts; - enum gsm_chan_t new_lchan_type; - bool async; - - /* Derived and resulting state */ - bool inter_cell; - uint8_t ho_ref; - enum hodec_id from_hodec_id; - struct gsm_lchan *new_lchan; - struct osmo_timer_list T3103; -}; +extern const struct value_string handover_result_names[]; +inline static const char *handover_result_name(enum handover_result val) +{ return get_value_string(handover_result_names, val); } -int bsc_handover_start(enum hodec_id from_hodec_id, struct gsm_lchan *old_lchan, struct gsm_bts *new_bts, - enum gsm_chan_t new_lchan_type); -int bsc_handover_start_gscon(struct gsm_subscriber_connection *conn); -void bsc_clear_handover(struct gsm_subscriber_connection *conn, int free_lchan); -struct gsm_lchan *bsc_handover_pending(struct gsm_lchan *new_lchan); - -int bsc_ho_count(struct gsm_bts *bts, bool inter_cell); +int bts_handover_count(struct gsm_bts *bts, int ho_scopes); /* Handover decision algorithms' actions to take on incoming handover-relevant events. * * All events that are interesting for handover decision are actually communicated by S_LCHAN_* signals, * so theoretically, each handover algorithm could evaluate those. However, handover_logic.c cleans up * handover operation state upon receiving some of these signals. To allow a handover decision algorithm - * to take advantage of e.g. the struct bsc_handover before it is discarded, the handover decision event + * to take advantage of e.g. the struct handover before it is discarded, the handover decision event * handler needs to be invoked before handover_logic.c discards the state. For example, if the handover * decision wants to place a penalty timer upon a handover failure, it still needs to know which target * cell the handover failed for; handover_logic.c erases that knowledge on handover failure, since it @@ -90,13 +56,26 @@ struct handover_decision_callbacks { int hodec_id; void (*on_measurement_report)(struct gsm_meas_rep *mr); - void (*on_ho_chan_activ_nack)(struct bsc_handover *ho); - void (*on_ho_failure)(struct bsc_handover *ho); + void (*on_handover_end)(struct gsm_subscriber_connection *conn, enum handover_result result); }; void handover_decision_callbacks_register(struct handover_decision_callbacks *hdc); struct handover_decision_callbacks *handover_decision_callbacks_get(int hodec_id); +int bsc_tx_bssmap_ho_required(struct gsm_lchan *lchan, const struct gsm0808_cell_id_list2 *target_cells); +int bsc_tx_bssmap_ho_request_ack(struct gsm_subscriber_connection *conn, + struct msgb *rr_ho_command); +int bsc_tx_bssmap_ho_detect(struct gsm_subscriber_connection *conn); +enum handover_result bsc_tx_bssmap_ho_complete(struct gsm_subscriber_connection *conn, + struct gsm_lchan *lchan); +void bsc_tx_bssmap_ho_failure(struct gsm_subscriber_connection *conn); + struct gsm_bts *bts_by_neighbor_ident(const struct gsm_network *net, const struct neighbor_ident_key *search_for); struct neighbor_ident_key *bts_ident_key(const struct gsm_bts *bts); + +void handover_parse_inter_bsc_mt(struct gsm_subscriber_connection *conn, + struct msgb *ho_request_msg); + +void handover_mt_allocate_lchan(struct handover *ho); +int handover_mt_send_rr_ho_command(struct handover *ho); |