fixeria has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-bts/+/31670 )
Change subject: osmo-bts-trx: clean up bts_model_l1sap_down()
......................................................................
osmo-bts-trx: clean up bts_model_l1sap_down()
Having a common body for PRIM_INFO_{ACTIVATE,DEACTIVATE,MODIFY},
but then branching using if-statements is a bit confusing.
Change-Id: I915c8a541249249e3c0b1f2eda4535e7c52db79f
Related: OS#1572
---
M src/osmo-bts-trx/l1_if.c
1 file changed, 78 insertions(+), 68 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/70/31670/1
diff --git a/src/osmo-bts-trx/l1_if.c b/src/osmo-bts-trx/l1_if.c
index ae4fe70..78a379b 100644
--- a/src/osmo-bts-trx/l1_if.c
+++ b/src/osmo-bts-trx/l1_if.c
@@ -396,83 +396,57 @@
/* put data into scheduler's queue */
return trx_sched_tch_req(trx, l1sap);
case OSMO_PRIM(PRIM_MPH_INFO, PRIM_OP_REQUEST):
+ if (l1sap->u.info.type == PRIM_INFO_ACT_CIPH)
+ chan_nr = l1sap->u.info.u.ciph_req.chan_nr;
+ else /* u.act_req used by
PRIM_INFO_{ACTIVATE,DEACTIVATE,MODIFY} */
+ chan_nr = l1sap->u.info.u.act_req.chan_nr;
+ lchan = get_lchan_by_chan_nr(trx, chan_nr);
+
switch (l1sap->u.info.type) {
case PRIM_INFO_ACT_CIPH:
- chan_nr = l1sap->u.info.u.ciph_req.chan_nr;
- lchan = get_lchan_by_chan_nr(trx, chan_nr);
if (l1sap->u.info.u.ciph_req.uplink)
l1if_set_ciphering(lchan, chan_nr, 0);
if (l1sap->u.info.u.ciph_req.downlink)
l1if_set_ciphering(lchan, chan_nr, 1);
break;
case PRIM_INFO_ACTIVATE:
+ if ((chan_nr & 0xE0) == 0x80) {
+ LOGPLCHAN(lchan, DL1C, LOGL_ERROR, "Cannot
activate"
+ " channel %s\n",
rsl_chan_nr_str(chan_nr));
+ break;
+ }
+
+ /* attempt to allocate an Error Concealment Unit
instance, if available */
+ lchan->ecu_state = osmo_ecu_init(trx,
lchan2ecu_codec(lchan));
+
+ /* activate dedicated channel */
+ trx_sched_set_lchan(lchan, chan_nr, LID_DEDIC, true);
+ /* activate associated channel */
+ trx_sched_set_lchan(lchan, chan_nr, LID_SACCH, true);
+ /* set mode */
+ trx_sched_set_mode(lchan->ts, chan_nr,
+ lchan->rsl_cmode, lchan->tch_mode,
+ lchan->tch.amr_mr.num_modes,
+ lchan->tch.amr_mr.mode[0].mode,
+ lchan->tch.amr_mr.mode[1].mode,
+ lchan->tch.amr_mr.mode[2].mode,
+ lchan->tch.amr_mr.mode[3].mode,
+ amr_get_initial_mode(lchan),
+ (lchan->ho.active == 1));
+ /* set lchan active */
+ lchan_set_state(lchan, LCHAN_S_ACTIVE);
+ /* set initial ciphering */
+ l1if_set_ciphering(lchan, chan_nr, 0);
+ l1if_set_ciphering(lchan, chan_nr, 1);
+ if (lchan->encr.alg_id)
+ lchan->ciph_state = LCHAN_CIPH_RXTX_CONF;
+ else
+ lchan->ciph_state = LCHAN_CIPH_NONE;
+
+ /* confirm */
+ mph_info_chan_confirm(trx, chan_nr, PRIM_INFO_ACTIVATE,
0);
+ break;
case PRIM_INFO_DEACTIVATE:
- case PRIM_INFO_MODIFY:
- chan_nr = l1sap->u.info.u.act_req.chan_nr;
- lchan = get_lchan_by_chan_nr(trx, chan_nr);
- if (l1sap->u.info.type == PRIM_INFO_ACTIVATE) {
- if ((chan_nr & 0xE0) == 0x80) {
- LOGPLCHAN(lchan, DL1C, LOGL_ERROR,
"Cannot activate"
- " channel %s\n",
rsl_chan_nr_str(chan_nr));
- break;
- }
-
- /* attempt to allocate an Error Concealment
Unit instance, if available */
- lchan->ecu_state = osmo_ecu_init(trx,
lchan2ecu_codec(lchan));
-
- /* activate dedicated channel */
- trx_sched_set_lchan(lchan, chan_nr, LID_DEDIC,
true);
- /* activate associated channel */
- trx_sched_set_lchan(lchan, chan_nr, LID_SACCH,
true);
- /* set mode */
- trx_sched_set_mode(lchan->ts, chan_nr,
- lchan->rsl_cmode, lchan->tch_mode,
- lchan->tch.amr_mr.num_modes,
- lchan->tch.amr_mr.mode[0].mode,
- lchan->tch.amr_mr.mode[1].mode,
- lchan->tch.amr_mr.mode[2].mode,
- lchan->tch.amr_mr.mode[3].mode,
- amr_get_initial_mode(lchan),
- (lchan->ho.active == 1));
- /* set lchan active */
- lchan_set_state(lchan, LCHAN_S_ACTIVE);
- /* set initial ciphering */
- l1if_set_ciphering(lchan, chan_nr, 0);
- l1if_set_ciphering(lchan, chan_nr, 1);
- if (lchan->encr.alg_id)
- lchan->ciph_state =
LCHAN_CIPH_RXTX_CONF;
- else
- lchan->ciph_state = LCHAN_CIPH_NONE;
-
- /* confirm */
- mph_info_chan_confirm(trx, chan_nr,
PRIM_INFO_ACTIVATE, 0);
- break;
- }
- if (l1sap->u.info.type == PRIM_INFO_MODIFY) {
- /* ECU for possibly new codec */
- if (lchan->ecu_state)
- osmo_ecu_destroy(lchan->ecu_state);
- lchan->ecu_state = osmo_ecu_init(trx,
lchan2ecu_codec(lchan));
- /* change mode */
- trx_sched_set_mode(lchan->ts, chan_nr,
- lchan->rsl_cmode, lchan->tch_mode,
- lchan->tch.amr_mr.num_modes,
- lchan->tch.amr_mr.mode[0].mode,
- lchan->tch.amr_mr.mode[1].mode,
- lchan->tch.amr_mr.mode[2].mode,
- lchan->tch.amr_mr.mode[3].mode,
- amr_get_initial_mode(lchan),
- 0);
- /* update ciphering params */
- l1if_set_ciphering(lchan, chan_nr, 0);
- l1if_set_ciphering(lchan, chan_nr, 1);
- if (lchan->encr.alg_id)
- lchan->ciph_state =
LCHAN_CIPH_RXTX_CONF;
- else
- lchan->ciph_state = LCHAN_CIPH_NONE;
- break;
- }
- /* here, type == PRIM_INFO_DEACTIVATE */
if ((chan_nr & 0xE0) == 0x80) {
LOGPLCHAN(lchan, DL1C, LOGL_ERROR, "Cannot
deactivate"
" channel %s\n",
rsl_chan_nr_str(chan_nr));
@@ -492,6 +466,29 @@
mph_info_chan_confirm(trx, chan_nr,
PRIM_INFO_DEACTIVATE, 0);
}
break;
+ case PRIM_INFO_MODIFY:
+ /* ECU for possibly new codec */
+ if (lchan->ecu_state)
+ osmo_ecu_destroy(lchan->ecu_state);
+ lchan->ecu_state = osmo_ecu_init(trx,
lchan2ecu_codec(lchan));
+ /* change mode */
+ trx_sched_set_mode(lchan->ts, chan_nr,
+ lchan->rsl_cmode, lchan->tch_mode,
+ lchan->tch.amr_mr.num_modes,
+ lchan->tch.amr_mr.mode[0].mode,
+ lchan->tch.amr_mr.mode[1].mode,
+ lchan->tch.amr_mr.mode[2].mode,
+ lchan->tch.amr_mr.mode[3].mode,
+ amr_get_initial_mode(lchan),
+ 0);
+ /* update ciphering params */
+ l1if_set_ciphering(lchan, chan_nr, 0);
+ l1if_set_ciphering(lchan, chan_nr, 1);
+ if (lchan->encr.alg_id)
+ lchan->ciph_state = LCHAN_CIPH_RXTX_CONF;
+ else
+ lchan->ciph_state = LCHAN_CIPH_NONE;
+ break;
default:
LOGP(DL1C, LOGL_NOTICE, "unknown MPH-INFO.req %d\n",
l1sap->u.info.type);
--
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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: I915c8a541249249e3c0b1f2eda4535e7c52db79f
Gerrit-Change-Number: 31670
Gerrit-PatchSet: 1
Gerrit-Owner: fixeria <[email protected]>
Gerrit-MessageType: newchange
