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Harald Welte gerrit-no-reply at lists.osmocom.orgHarald Welte has submitted this change and it was merged.
Change subject: trx: avoid deactivating lchan on LCHAN_REL_ACT_REACT
......................................................................
trx: avoid deactivating lchan on LCHAN_REL_ACT_REACT
* do not deactivate lchan when called with LCHAN_REL_ACT_REACT
* add fixme comment
It's unclear yet if any special steps are required for osmo-bts-trx so
let's just make it compatible with setups [1] using BS_AG_BLKS_RES != 1
for now.
Background: CCCH is auto activated by some OsmoBTS - before we receive
SI3, see 4a8582846281322e8d7dfc577b18767cf35c24d1. To accommodate for
that we deactivate CCCH in common/rsl.c, which triggers BTS-model
specific callback sapi_deactivate_cb() which updates parameters and
activates it again.
In case of osmo-bts-trx there is no auto-activation and (seems to be) no
need in special interaction with hw to activate channel (no
lchan_activate()) hence we can just skip entire
deactivate/setup/activate again routine.
[1] "channel-descrption bs-ag-blks-res N" in OpenBSC config file.
Related: OS#1575
Change-Id: I20b89ba1e43d1414180b083cd1e085eeffe5d513
---
M include/osmo-bts/rsl.h
M src/osmo-bts-trx/l1_if.c
2 files changed, 7 insertions(+), 1 deletion(-)
Approvals:
Harald Welte: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/include/osmo-bts/rsl.h b/include/osmo-bts/rsl.h
index d5d0f1a..ddd756e 100644
--- a/include/osmo-bts/rsl.h
+++ b/include/osmo-bts/rsl.h
@@ -9,7 +9,7 @@
LCHAN_REL_ACT_RSL,
LCHAN_REL_ACT_PCU,
LCHAN_REL_ACT_OML,
- LCHAN_REL_ACT_REACT,
+ LCHAN_REL_ACT_REACT, /* remove once auto-activation hack is removed from opstart_compl() */
};
#define LCHAN_FN_DUMMY 0xFFFFFFFF
diff --git a/src/osmo-bts-trx/l1_if.c b/src/osmo-bts-trx/l1_if.c
index c629a61..3c11dfd 100644
--- a/src/osmo-bts-trx/l1_if.c
+++ b/src/osmo-bts-trx/l1_if.c
@@ -109,6 +109,12 @@
struct phy_instance *pinst = trx_phy_instance(lchan->ts->trx);
struct trx_l1h *l1h = pinst->u.osmotrx.hdl;
+ if (lchan->rel_act_kind == LCHAN_REL_ACT_REACT) {
+ lchan->rel_act_kind = LCHAN_REL_ACT_RSL;
+ /* FIXME: perform whatever is needed (if any) to set proper PCH/AGCH allocation according to
+ 3GPP TS 44.018 Table 10.5.2.11.1 using num_agch(lchan->ts->trx, "TRX L1"); function */
+ return 0;
+ }
/* set lchan inactive */
lchan_set_state(lchan, LCHAN_S_NONE);
--
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Gerrit-MessageType: merged
Gerrit-Change-Id: I20b89ba1e43d1414180b083cd1e085eeffe5d513
Gerrit-PatchSet: 7
Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Owner: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Alexander Chemeris <Alexander.Chemeris at gmail.com>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Ivan Kluchnikov <kluchnikovi at gmail.com>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Tom Tsou <tom at tsou.cc>