openbsc[master]: lchan: Release channel in case of late activation ack

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keith gerrit-no-reply at lists.osmocom.org
Tue Nov 1 11:39:54 UTC 2016


Patch Set 4:

> Is there some bug which prompted this fix? Would be nice to see the
 > note in commit message as to when/why this happens.

Max, it is something of the 1 million рубль question for me. 
We see it all the time, especially in communities where we run long distance Wifi Links between osmonitb and osmobts. However, in my experiments, I find it difficult to provoke by loading the network link.
I can also say that last week, I saw 'BROKEN UNUSABLE Error reason: activation timeout' channels on a fairwaves UmSite, suggesting that the osmobts (or trx) process stalled causing osmobts to not ACK within the time.
Holger and I one day pondered if maybe latency with ARM<->DSP msgq in the Litecel might also provoke it.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I63dc0deaf15ba7c21e20b1e0c7b85f0437e183ed
Gerrit-PatchSet: 4
Gerrit-Project: openbsc
Gerrit-Branch: master
Gerrit-Owner: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: keith <keith at rhizomatica.org>
Gerrit-HasComments: No



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