Timur Davydov has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bts/+/42698?usp=email )

Change subject: trx: handle synchronous TRX control callbacks in provision FSM ......................................................................

trx: handle synchronous TRX control callbacks in provision FSM

Set *_sent flags before issuing TRX control commands to ensure correct state when responses are delivered synchronously (e.g. WebUSB callback path)

Also guard FSM state handling in st_open_poweroff() to avoid duplicate transitions if state was already changed by a synchronous response

No functional change for asynchronous (socket-based) backends

Change-Id: I50c95e3796839e9fe721bff6f96fed4c490c6018 --- M src/osmo-bts-trx/trx_provision_fsm.c 1 file changed, 15 insertions(+), 7 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/98/42698/1

diff --git a/src/osmo-bts-trx/trx_provision_fsm.c b/src/osmo-bts-trx/trx_provision_fsm.c index 617dab3..b1ec0a4 100644 --- a/src/osmo-bts-trx/trx_provision_fsm.c +++ b/src/osmo-bts-trx/trx_provision_fsm.c @@ -181,16 +181,18 @@ }

/* before power on */ + /* NOTE: flags are set BEFORE issuing the command so that synchronous + * callback paths (e.g. WebUSB) see the correct sent/acked state. */ if (l1h->config.arfcn_valid) { if (!l1h->config.rxtune_sent) { - trx_if_cmd_rxtune(l1h, l1h->config.arfcn, l1if_rxtune_cb); l1h->config.rxtune_sent = true; l1h->config.rxtune_acked = false; + trx_if_cmd_rxtune(l1h, l1h->config.arfcn, l1if_rxtune_cb); } if (!l1h->config.txtune_sent) { - trx_if_cmd_txtune(l1h, l1h->config.arfcn, l1if_txtune_cb); l1h->config.txtune_sent = true; l1h->config.txtune_acked = false; + trx_if_cmd_txtune(l1h, l1h->config.arfcn, l1if_txtune_cb); } if (l1h->config.txtune_acked) { /* After TXTUNE is sent to TRX, get the tx nominal power @@ -199,23 +201,23 @@ * power (because TRX may not support the command or * provide broken values) */ if (!l1h->config.nominal_power_set_by_vty && !l1h->config.nomtxpower_sent) { - trx_if_cmd_getnompower(l1h, l1if_getnompower_cb); l1h->config.nomtxpower_sent = true; l1h->config.nomtxpower_acked = false; + trx_if_cmd_getnompower(l1h, l1if_getnompower_cb); } } } if (!pinst->phy_link->u.osmotrx.use_legacy_setbsic && l1h->config.tsc_valid && !l1h->config.tsc_sent) { - trx_if_cmd_settsc(l1h, l1h->config.tsc, l1if_settsc_cb); l1h->config.tsc_sent = true; l1h->config.tsc_acked = false; + trx_if_cmd_settsc(l1h, l1h->config.tsc, l1if_settsc_cb); } if (pinst->phy_link->u.osmotrx.use_legacy_setbsic && l1h->config.bsic_valid && !l1h->config.bsic_sent) { - trx_if_cmd_setbsic(l1h, l1h->config.bsic, l1if_setbsic_cb); l1h->config.bsic_sent = true; l1h->config.bsic_acked = false; + trx_if_cmd_setbsic(l1h, l1h->config.bsic, l1if_setbsic_cb); } /* Once the nominal Tx power is known, apply the initial Tx power attenuation * before the transceiver is powered on. Otherwise it will be transmitting @@ -225,9 +227,9 @@ int initial_mdBm = power_ramp_initial_power_mdBm(pinst->trx); int power_att_dB = (get_p_max_out_mdBm(pinst->trx) - initial_mdBm) / 1000;

- trx_if_cmd_setpower_att(l1h, power_att_dB, l1if_setpower_att_cb); l1h->config.setpower_sent = true; l1h->config.setpower_acked = false; + trx_if_cmd_setpower_att(l1h, power_att_dB, l1if_setpower_att_cb); }

/* Ask transceiver to use the newest TRXD PDU version if not using it yet */ @@ -239,8 +241,8 @@ l1h->config.trxd_pdu_ver_use = 0; l1h->config.setformat_acked = true; } else { - trx_if_cmd_setformat(l1h, l1h->config.trxd_pdu_ver_req, l1if_setformat_cb); l1h->config.setformat_acked = false; + trx_if_cmd_setformat(l1h, l1h->config.trxd_pdu_ver_req, l1if_setformat_cb); } } return 0; @@ -527,6 +529,12 @@

l1if_provision_transceiver_trx(l1h);

+ /* If the FSM state was already changed by synchronous response + * processing (e.g. WebUSB callback path), skip further handling + * to avoid duplicate state transitions. */ + if (fi->state != TRX_PROV_ST_OPEN_POWEROFF) + return; + if (l1h->phy_inst->num == 0) { waiting_other_trx = !trx_other_trx0_ready(l1h); } else {