<p>pespin has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/c/osmo-bsc/+/20405">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">OML: Stay compatible with older osmo-bts versions<br><br>Older osmo-bts versions (before FSMs) tended to mimic broken behavior<br>from nanoBTS. As so, we detect it because SiteMGr becomes Enabled by<br>default as in nanoBTS, and hence we can manage them also by expecting no<br>Offline state and sending Opstart (and hence finally transitting to<br>Enabled) during Dependency state.<br><br>Change-Id: Iaa036a2936f609b9b9721b2b4ad8d6deaf023f42<br>---<br>M include/osmocom/bsc/bts.h<br>M src/osmo-bsc/nm_bb_transc_fsm.c<br>M src/osmo-bsc/nm_bts_fsm.c<br>M src/osmo-bsc/nm_bts_sm_fsm.c<br>M src/osmo-bsc/nm_channel_fsm.c<br>M src/osmo-bsc/nm_rcarrier_fsm.c<br>6 files changed, 21 insertions(+), 17 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/05/20405/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/include/osmocom/bsc/bts.h b/include/osmocom/bsc/bts.h</span><br><span>index 564e2b8..26ad2d9 100644</span><br><span>--- a/include/osmocom/bsc/bts.h</span><br><span>+++ b/include/osmocom/bsc/bts.h</span><br><span>@@ -434,6 +434,12 @@</span><br><span> </span><br><span> struct {</span><br><span> struct osmo_fsm_inst *fi;</span><br><span style="color: hsl(120, 100%, 40%);">+ /* nanoBTS and old versions of osmo-bts behaves this way due to</span><br><span style="color: hsl(120, 100%, 40%);">+ broken FSMs not following TS 12.21: they never do</span><br><span style="color: hsl(120, 100%, 40%);">+ Dependency->Offline transition, but they should be OPSTARTed</span><br><span style="color: hsl(120, 100%, 40%);">+ nevertheless during Dependnecy state to work. This field is</span><br><span style="color: hsl(120, 100%, 40%);">+ used by all dependent NM objects. */</span><br><span style="color: hsl(120, 100%, 40%);">+ bool peer_has_no_avstate_offline;</span><br><span> bool opstart_sent;</span><br><span> struct gsm_abis_mo mo;</span><br><span> } site_mgr;</span><br><span>diff --git a/src/osmo-bsc/nm_bb_transc_fsm.c b/src/osmo-bsc/nm_bb_transc_fsm.c</span><br><span>index bdee054..ffb7167 100644</span><br><span>--- a/src/osmo-bsc/nm_bb_transc_fsm.c</span><br><span>+++ b/src/osmo-bsc/nm_bb_transc_fsm.c</span><br><span>@@ -111,10 +111,7 @@</span><br><span> {</span><br><span> struct gsm_bts_trx *trx = (struct gsm_bts_trx *)fi->priv;</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- /* nanoBTS is broken, doesn't follow TS 12.21. Opstart MUST be sent</span><br><span style="color: hsl(0, 100%, 40%);">- during Dependency, so we simply move to OFFLINE state here to avoid</span><br><span style="color: hsl(0, 100%, 40%);">- duplicating code */</span><br><span style="color: hsl(0, 100%, 40%);">- if (trx->bts->type == GSM_BTS_TYPE_NANOBTS) {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (trx->bts->site_mgr.peer_has_no_avstate_offline) {</span><br><span> nm_bb_transc_fsm_state_chg(fi, NM_BB_TRANSC_ST_OP_DISABLED_OFFLINE);</span><br><span> return;</span><br><span> }</span><br><span>@@ -185,9 +182,9 @@</span><br><span> nm_bb_transc_fsm_state_chg(fi, NM_BB_TRANSC_ST_OP_DISABLED_NOTINSTALLED);</span><br><span> return;</span><br><span> case NM_AVSTATE_DEPENDENCY:</span><br><span style="color: hsl(0, 100%, 40%);">- /* There's no point in moving back to Dependency in nanoBTS, since it's broken</span><br><span style="color: hsl(120, 100%, 40%);">+ /* There's no point in moving back to Dependency, since it's broken</span><br><span> and it acts actually as if it was in Offline state */</span><br><span style="color: hsl(0, 100%, 40%);">- if (trx->bts->type != GSM_BTS_TYPE_NANOBTS) {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (!trx->bts->site_mgr.peer_has_no_avstate_offline) {</span><br><span> nm_bb_transc_fsm_state_chg(fi, NM_BB_TRANSC_ST_OP_DISABLED_DEPENDENCY);</span><br><span> } else {</span><br><span> /* Moreover, in nanoBTS we need to check here for tx</span><br><span>diff --git a/src/osmo-bsc/nm_bts_fsm.c b/src/osmo-bsc/nm_bts_fsm.c</span><br><span>index 0a580ad..575e87a 100644</span><br><span>--- a/src/osmo-bsc/nm_bts_fsm.c</span><br><span>+++ b/src/osmo-bsc/nm_bts_fsm.c</span><br><span>@@ -119,7 +119,7 @@</span><br><span> /* nanoBTS is broken, doesn't follow TS 12.21. Opstart MUST be sent</span><br><span> during Dependency, so we simply move to OFFLINE state here to avoid</span><br><span> duplicating code */</span><br><span style="color: hsl(0, 100%, 40%);">- if (bts->type == GSM_BTS_TYPE_NANOBTS) {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (bts->site_mgr.peer_has_no_avstate_offline) {</span><br><span> nm_bts_fsm_state_chg(fi, NM_BTS_ST_OP_DISABLED_OFFLINE);</span><br><span> return;</span><br><span> }</span><br><span>@@ -200,9 +200,9 @@</span><br><span> nm_bts_fsm_state_chg(fi, NM_BTS_ST_OP_DISABLED_NOTINSTALLED);</span><br><span> return;</span><br><span> case NM_AVSTATE_DEPENDENCY:</span><br><span style="color: hsl(0, 100%, 40%);">- /* There's no point in moving back to Dependency in nanoBTS, since it's broken</span><br><span style="color: hsl(120, 100%, 40%);">+ /* There's no point in moving back to Dependency, since it's broken</span><br><span> and it acts actually as if it was in Offline state */</span><br><span style="color: hsl(0, 100%, 40%);">- if (bts->type != GSM_BTS_TYPE_NANOBTS) {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (!bts->site_mgr.peer_has_no_avstate_offline) {</span><br><span> nm_bts_fsm_state_chg(fi, NM_BTS_ST_OP_DISABLED_DEPENDENCY);</span><br><span> } else {</span><br><span> /* Moreover, in nanoBTS we need to check here for tx</span><br><span>diff --git a/src/osmo-bsc/nm_bts_sm_fsm.c b/src/osmo-bsc/nm_bts_sm_fsm.c</span><br><span>index 0f66f38..6fcff3c 100644</span><br><span>--- a/src/osmo-bsc/nm_bts_sm_fsm.c</span><br><span>+++ b/src/osmo-bsc/nm_bts_sm_fsm.c</span><br><span>@@ -47,6 +47,7 @@</span><br><span> {</span><br><span> struct gsm_bts *bts = (struct gsm_bts *)fi->priv;</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+ bts->site_mgr.peer_has_no_avstate_offline = (bts->type == GSM_BTS_TYPE_NANOBTS);</span><br><span> bts->site_mgr.opstart_sent = false;</span><br><span> }</span><br><span> </span><br><span>@@ -72,7 +73,10 @@</span><br><span> } else {</span><br><span> LOGPFSML(fi, LOGL_NOTICE, "Received BTS Site Mgr State Report Enabled "</span><br><span> "without Opstart. You are probably using a nanoBTS but don't "</span><br><span style="color: hsl(0, 100%, 40%);">- "have your .cfg with 'type nanobts'\n");</span><br><span style="color: hsl(120, 100%, 40%);">+ "have your .cfg with 'type nanobts'. Otherwise, you probably "</span><br><span style="color: hsl(120, 100%, 40%);">+ "are using an old osmo-bts; automatically adjusting OML "</span><br><span style="color: hsl(120, 100%, 40%);">+ "behavior to be backward-compatible.\n");</span><br><span style="color: hsl(120, 100%, 40%);">+ bts->site_mgr.peer_has_no_avstate_offline = true;</span><br><span> }</span><br><span> nm_bts_sm_fsm_state_chg(fi, NM_BTS_SM_ST_OP_ENABLED);</span><br><span> return;</span><br><span>diff --git a/src/osmo-bsc/nm_channel_fsm.c b/src/osmo-bsc/nm_channel_fsm.c</span><br><span>index 4520a14..a5656d0 100644</span><br><span>--- a/src/osmo-bsc/nm_channel_fsm.c</span><br><span>+++ b/src/osmo-bsc/nm_channel_fsm.c</span><br><span>@@ -125,10 +125,7 @@</span><br><span> {</span><br><span> struct gsm_bts_trx_ts *ts = (struct gsm_bts_trx_ts *)fi->priv;</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- /* nanoBTS is broken, doesn't follow TS 12.21. Opstart MUST be sent</span><br><span style="color: hsl(0, 100%, 40%);">- during Dependency, so we simply move to OFFLINE state here to avoid</span><br><span style="color: hsl(0, 100%, 40%);">- duplicating code */</span><br><span style="color: hsl(0, 100%, 40%);">- if (ts->trx->bts->type == GSM_BTS_TYPE_NANOBTS) {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (ts->trx->bts->site_mgr.peer_has_no_avstate_offline) {</span><br><span> nm_chan_fsm_state_chg(fi, NM_CHAN_ST_OP_DISABLED_OFFLINE);</span><br><span> return;</span><br><span> }</span><br><span>@@ -209,9 +206,9 @@</span><br><span> nm_chan_fsm_state_chg(fi, NM_CHAN_ST_OP_DISABLED_NOTINSTALLED);</span><br><span> return;</span><br><span> case NM_AVSTATE_DEPENDENCY:</span><br><span style="color: hsl(0, 100%, 40%);">- /* There's no point in moving back to Dependency in nanoBTS, since it's broken</span><br><span style="color: hsl(120, 100%, 40%);">+ /* There's no point in moving back to Dependency, since it's broken</span><br><span> and it acts actually as if it was in Offline state */</span><br><span style="color: hsl(0, 100%, 40%);">- if (ts->trx->bts->type != GSM_BTS_TYPE_NANOBTS) {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (!ts->trx->bts->site_mgr.peer_has_no_avstate_offline) {</span><br><span> nm_chan_fsm_state_chg(fi, NM_CHAN_ST_OP_DISABLED_DEPENDENCY);</span><br><span> } else {</span><br><span> /* Moreover, in nanoBTS we need to check here for tx</span><br><span>diff --git a/src/osmo-bsc/nm_rcarrier_fsm.c b/src/osmo-bsc/nm_rcarrier_fsm.c</span><br><span>index 68cc9ea..9f7828d 100644</span><br><span>--- a/src/osmo-bsc/nm_rcarrier_fsm.c</span><br><span>+++ b/src/osmo-bsc/nm_rcarrier_fsm.c</span><br><span>@@ -123,7 +123,7 @@</span><br><span> * version is found with the aboev estated bug, this code needs to be</span><br><span> * enabled, similar to what we do in nm_bb_transc_fsm:</span><br><span> */</span><br><span style="color: hsl(0, 100%, 40%);">- /*if (trx->bts->type == GSM_BTS_TYPE_NANOBTS) {</span><br><span style="color: hsl(120, 100%, 40%);">+ /*if (trx->bts->site_mgr.peer_has_no_avstate_offline) {</span><br><span> nm_rcarrier_fsm_state_chg(fi, NM_RCARRIER_ST_OP_DISABLED_OFFLINE);</span><br><span> return;</span><br><span> }*/</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/c/osmo-bsc/+/20405">change 20405</a>. 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<div style="display:none"> Gerrit-Project: osmo-bsc </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-Change-Id: Iaa036a2936f609b9b9721b2b4ad8d6deaf023f42 </div>
<div style="display:none"> Gerrit-Change-Number: 20405 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: pespin <pespin@sysmocom.de> </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>