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Add check for non existing lchan at tch_frame_down() 

Traffic cannot sent to BTS, if there is (currently) no logical channel
associated with the transaction.

This happens, if TCH traffic is received from upper layer, but there is
no lchan available before completing immediate assignment, handover or
assignment process.

[hfreyther: The code has not been moved to tch_frame_down
but the issue looks similiar]
This commit is contained in:
Andreas Eversberg 2013-03-11 08:20:48 +01:00 committed by Holger Hans Peter Freyther
parent 4c97435b35
commit 93e795c1fd
1 changed files with 4 additions and 0 deletions
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4
openbsc/src/libmsc/gsm_04_08.c
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@ -3005,6 +3005,10 @@ int mncc_tx_to_cc(struct gsm_network *net, int msg_type, void *arg)
LOGP(DMNCC, LOGL_NOTICE, "TCH frame for trans without conn\n");
return 0;
}
if (!trans->conn->lchan) {
LOGP(DMNCC, LOGL_NOTICE, "TCH frame for trans without lchan\n");
return 0;
}
if (trans->conn->lchan->type != GSM_LCHAN_TCH_F
&& trans->conn->lchan->type != GSM_LCHAN_TCH_H) {
/* This should be LOGL_ERROR or NOTICE, but