pespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bsc/+/28275 )

Change subject: smscb: Tx CBSP FAILURE/RESTART for specific cell when it becomes (un)operational ......................................................................

smscb: Tx CBSP FAILURE/RESTART for specific cell when it becomes (un)operational

This way the CBSP peers knows the state of specific cells and can avoid sending messages to unoperative ones, etc.

Related: SYS#5910 Change-Id: I94f0a1ac3c59cffe5af57f972d5d96fc92281d34 --- M src/osmo-bsc/smscb.c 1 file changed, 50 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/75/28275/1

diff --git a/src/osmo-bsc/smscb.c b/src/osmo-bsc/smscb.c index 1a69fba..7cb3b36 100644 --- a/src/osmo-bsc/smscb.c +++ b/src/osmo-bsc/smscb.c @@ -476,6 +476,54 @@ return cbsp_tx_decoded(cbc, cbsp); }

+/* transmit a CBSP RESTART-INDICATION message stating all message data was lost for one cell */ +int cbsp_tx_restart_bts(struct bsc_cbc_link *cbc, bool is_emerg, struct gsm_bts *bts) +{ + struct osmo_cbsp_decoded *cbsp = osmo_cbsp_decoded_alloc(cbc, CBSP_MSGT_RESTART); + struct osmo_cbsp_cell_ent cell_ent; + + if (is_emerg) + cbsp->u.restart.bcast_msg_type = 0x01; + cbsp->u.restart.recovery_ind = 0x01; /* message data lost */ + cbsp->u.restart.cell_list.id_discr = CELL_IDENT_LAC_AND_CI; + + cell_ent = (struct osmo_cbsp_cell_ent){ + .cell_id = { + .lac_and_ci = { + .lac = bts->location_area_code, + .ci = bts->cell_identity, + } + } + }; + llist_add(&cell_ent.list, &cbsp->u.restart.cell_list.list); + + return cbsp_tx_decoded(cbc, cbsp); +} + +/* transmit a CBSP FAILURE-INDICATION message stating all message data was lost for one cell */ +int cbsp_tx_failure_bts(struct bsc_cbc_link *cbc, bool is_emerg, struct gsm_bts *bts) +{ + struct osmo_cbsp_decoded *cbsp = osmo_cbsp_decoded_alloc(cbc, CBSP_MSGT_FAILURE); + struct osmo_cbsp_fail_ent fail_ent; + + if (is_emerg) + cbsp->u.failure.bcast_msg_type = 0x01; + + fail_ent = (struct osmo_cbsp_fail_ent){ + .id_discr = CELL_IDENT_LAC_AND_CI, + .cell_id = { + .lac_and_ci = { + .lac = bts->location_area_code, + .ci = bts->cell_identity, + } + }, + .cause = OSMO_CBSP_CAUSE_CELL_BROADCAST_NOT_OPERATIONAL + }; + llist_add(&fail_ent.list, &cbsp->u.failure.fail_list); + + return cbsp_tx_decoded(cbc, cbsp); +} + /* transmit a CBSP KEEPALIVE COMPLETE to the CBC */ static int tx_cbsp_keepalive_compl(struct bsc_cbc_link *cbc) { @@ -1093,12 +1141,14 @@ bts_cbch_timer_schedule(trx->bts); /* Start ETWS/PWS Primary Notification, if active */ bts_etws_bootstrap(trx->bts); + cbsp_tx_restart_bts(bts->network->cbc, false, bts); } } else { if (osmo_timer_pending(&bts->cbch_timer)) { /* If timer is ongoing it means CBCH was available */ LOG_BTS(bts, DCBS, LOGL_INFO, "BTS becomes unavailable for CBCH\n"); osmo_timer_del(&bts->cbch_timer); + cbsp_tx_failure_bts(bts->network->cbc, false, bts); } /* else: CBCH was already unavailable before */ } return 0;