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common/bts.c: bts_supports_cm(): take care about GSM48_CMODE_SIGN 

At the moment, bts_supports_cm() is only called on reception of
RSL Channel MODE MODIFY from the BSC. The idea is to check whether
the indicated RSL channel mode is supported by a BTS model.

RSL Channel MODE MODIFY message may indicate a channel in signalling
mode, i.e. GSM48_CMODE_SIGN, which has always been rejected so far.

Let's assume that signalling is always supported, as there is
no special BTS_FEAT_* definition to check that.

This change should make BTS_Tests.TC_rsl_modify_encr pass.

Change-Id: I8ea98a3eb9dc15a04f665596ee276883eb824b9a
This commit is contained in:
Vadim Yanitskiy 2019-06-03 00:12:40 +07:00 committed by Harald Welte
parent f6b6c48c8b
commit a52c78dd3e
1 changed files with 5 additions and 0 deletions
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src/common/bts.c
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@ -744,6 +744,11 @@ int bts_supports_cm(struct gsm_bts *bts, enum gsm_phys_chan_config pchan,
{
enum gsm_bts_features feature = _NUM_BTS_FEAT;
/* We assume that signalling support is mandatory,
* there is no BTS_FEAT_* definition to check that. */
if (cm == GSM48_CMODE_SIGN)
return 1;
/* Before the requested pchan/cm combination can be checked, we need to
* convert it to a feature identifier we can check */
switch (pchan) {