Current OpenBSC + LCR using MNCC socket

[Lennart Müller]

Hi Harald,

2011/7/23 Harald Welte <laforge at gnumonks.org>


> I've committed some changes a couple of minutes ago (to libosmocore +
> openbsc) that make lcr compile again.
>

> The only missing part is one minor change to lcr:
>
> diff --git a/gsm_bs.h b/gsm_bs.h
> index 8a55213..45bf083 100644
> --- a/gsm_bs.h
> +++ b/gsm_bs.h
> @@ -1,5 +1,6 @@
>  extern "C" {
>  #include <openbsc/gsm_data.h>
> +#include <openbsc/mncc.h>
>  }
>
>  /* GSM port class */
>

Compiles now, thanks!


> > Starting osmo-nitb with -P and -m parameters, LCR can connect to MNCC
> > socket. But any try to start voice traffic either from or to a mobile
> > station results into these continuous messages:
>
> I will try to look into it, but I'm not sure when I find time to do so,
> there are lots of other issues on my todo list pending at the moment.
>

Okay, I see.

It works now, I traced down the problem to LCR.
The file gsm.cpp contains following function at line 200:

    int send_and_free_mncc(void *instance, unsigned int msg_type, void
*data)

There is an if-Query:
    if (instance) {
#ifdef WITH_GSM_BS
        ret = mncc_send((struct gsm_network *)instance, msg_type, data);
#endif
#ifdef WITH_GSM_MS
        ret = mncc_send((struct osmocom_ms *)instance, msg_type, data);
#endif
    }

The problem is: The query is always false, so no messages are sent to
OpenBSC.
If I comment out the if-query, everything works as expected: Calls can be
made mobile originated and mobile terminated.
However, I don't think the if-query is there without a reason.

Within gsm_bs.cpp, send_and_free_mncc is called with parameter
p_m_g_instance, which is written at Line 64:

p_m_g_instance = gsm->network;

-- Lennart
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