Harald Welte has submitted this change and it was merged.

Change subject: trigger acc ramping on state-changed-event reports

trigger acc ramping on state-changed-event reports

Trigger ACC ramping not only when an Administrative State Change
ACK is received from a BTS, but also when an administrative state
change is reported for TRX 0 in a State Changed Event Report.

This should allow ACC ramping to work with any BTS which reports
an administrative state change to 'unlock' using either of these
OML messages.

Tested with a sysmobts and a nanobts.

The sysmobts only reports TRX locked/unlock changes in Administrative
State Change ACKs, not via State Changed Event Reports.

The nanobts is known to send both of these OML messages in quick
succession, so do not re-trigger ramping if it's already in progress.

Change-Id: I097a113a3a63de02bcb8277020beb59cf485b176
Related: OS#2591
M src/libbsc/acc_ramp.c
1 file changed, 10 insertions(+), 2 deletions(-)

  Harald Welte: Looks good to me, approved
  Jenkins Builder: Verified

diff --git a/src/libbsc/acc_ramp.c b/src/libbsc/acc_ramp.c
index 6d9be59..16bce3f 100644
--- a/src/libbsc/acc_ramp.c
+++ b/src/libbsc/acc_ramp.c
@@ -144,7 +144,8 @@
        struct acc_ramp *acc_ramp = handler_data;
        struct gsm_bts_trx *trx = NULL;
-       if (signal != S_NM_STATECHG_ADM)
+       /* Handled signals map to an Administrative State Change ACK, or a 
State Changed Event Report. */
+       if (signal != S_NM_STATECHG_ADM && signal != S_NM_STATECHG_OPER)
                return 0;
        if (nsd->obj_class != NM_OC_RADIO_CARRIER)
@@ -163,7 +164,14 @@
        /* Trigger or abort ACC ramping based on the new 'RF lock' state of 
this TRX. */
        switch (nsd->new_state->administrative) {
        case NM_STATE_UNLOCKED:
-               acc_ramp_trigger(acc_ramp);
+               /*
+                * Do not re-trigger ACC ramping if ramping is already in 
+                * A BTS might send several "unlock" change events: One in the 
+                * State Change ACK, and/or another in a State Changed Event 
+                * For instance, the nanobts is known to send both.
+                */
+               if (!osmo_timer_pending(&acc_ramp->step_timer))
+                       acc_ramp_trigger(acc_ramp);
        case NM_STATE_LOCKED:
        case NM_STATE_SHUTDOWN:

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Gerrit-MessageType: merged
Gerrit-Change-Id: I097a113a3a63de02bcb8277020beb59cf485b176
Gerrit-PatchSet: 2
Gerrit-Project: osmo-bsc
Gerrit-Branch: master
Gerrit-Owner: Stefan Sperling <ssperl...@sysmocom.de>
Gerrit-Reviewer: Harald Welte <lafo...@gnumonks.org>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Stefan Sperling <ssperl...@sysmocom.de>

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