From f0ff9a67117dc22d838769fe6eef67778abd43b9 Mon Sep 17 00:00:00 2001 From: Neels Hofmeyr Date: Fri, 15 Jun 2018 20:39:58 +0200 Subject: fix dyn TS init: properly identify BTS on OML OPSTART ACK Commit "dyn ts, bts_ipaccess_nanobts.c: init PDCH on Chan OPSTART ACK" bf7099262adf0f27e71a08387747c5cb0d459360 Icf6e25ff068e8a2600562d52726ead65e864ec02 introduced signal S_NM_OPSTART_ACK and passed the FOM header to identify the BTS by. But the FOM header's BTS number is zero on each Abis/IP link, and the BTS and TRX are actually identified by msgb->dst == e1inp_sign_link, member trx. So the initial implementation associated *all* Channel OPSTART ACKs with BTS 0. Pass the entire msgb as S_NM_OPSTART_ACK signal argument, implement a abis_nm_get_ts() to retrieve the proper timeslot and use that during timeslot init. Related: OS#3351 OS#3205 Change-Id: I45ce5c24cb62d00f350df1af1be6c11104d74193 --- src/osmo-bsc/abis_nm.c | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) (limited to 'src/osmo-bsc/abis_nm.c') diff --git a/src/osmo-bsc/abis_nm.c b/src/osmo-bsc/abis_nm.c index 9dc1f62cb..cb1cc56ea 100644 --- a/src/osmo-bsc/abis_nm.c +++ b/src/osmo-bsc/abis_nm.c @@ -671,11 +671,36 @@ static int abis_nm_rx_lmt_event(struct msgb *mb) return 0; } +/* From a received OML message, determine the matching struct gsm_bts_trx_ts instance. + * Note that the BTS-TRX-TS numbers received in the FOM header do not correspond to the local bts->nr and + * bts->trx->nr. Rather, the trx is identified by the e1inp_sign_link* found in msg->dst, and the TS is + * then obtained by the FOM header's TS number. */ +struct gsm_bts_trx_ts *abis_nm_get_ts(const struct msgb *oml_msg) +{ + struct abis_om_fom_hdr *foh = msgb_l3(oml_msg); + struct e1inp_sign_link *sign_link = oml_msg->dst; + struct gsm_bts_trx *trx = sign_link->trx; + uint8_t ts_nr = foh->obj_inst.ts_nr; + if (!trx) { + LOGP(DNM, LOGL_ERROR, "%s Channel OPSTART ACK for sign_link without trx\n", + abis_nm_dump_foh(foh)); + return NULL; + } + if (ts_nr >= ARRAY_SIZE(trx->ts)) { + LOGP(DNM, LOGL_ERROR, "bts%u-trx%u %s Channel OPSTART ACK for non-existent TS\n", + trx->bts->nr, trx->nr, abis_nm_dump_foh(foh)); + return NULL; + } + return &trx->ts[ts_nr]; +} + static int abis_nm_rx_opstart_ack(struct msgb *mb) { struct abis_om_fom_hdr *foh = msgb_l3(mb); - DEBUGPFOH(DNM, foh, "Opstart ACK\n"); - osmo_signal_dispatch(SS_NM, S_NM_OPSTART_ACK, foh); + struct e1inp_sign_link *sign_link = mb->dst; + struct gsm_bts_trx *trx = sign_link->trx; + DEBUGPFOH(DNM, foh, "bts=%u trx=%u Opstart ACK\n", trx->bts->nr, trx->nr); + osmo_signal_dispatch(SS_NM, S_NM_OPSTART_ACK, mb); return 0; } -- cgit v1.2.3