Hello,

I updated my OpenBSC repo today and found that the GPRS is not working properly with the newest osmo-nitb.

I tried several different versions of osmo-nitb and osmo-sgsn to localize the problem and concluded that osmo-nitb is causing the issue.

The phone can attach to GPRS and PDP context request is accepted, but the phone still cannot send or receive data.

<000f> sgsn_libgtp.c:126 Create PDP Context

<000f> sgsn_libgtp.c:379 libgtp cb_conf(type=16, cause=128, pdp=0xb733cea0, cbp=0x8839230)

<000f> sgsn_libgtp.c:265 Received CREATE PDP CTX CONF, cause=128(Request accepted)

<0013> gprs_sndcp.c:297 SNSM-ACTIVATE.ind (lle=0x8838568 TLLI=d527d1cf, SAPI=3, NSAPI=5)

<0011> gprs_bssgp.c:503 BSSGP BVCI=0 TLLI=d527d1cf Rx LLC DISCARDED

<0011> gprs_bssgp.c:376 BSSGP TLLI=0xd527d1cf Rx UPLINK-UNITDATA

<0012> gprs_llc.c:551 LLC SAPI=1 C   FCS=0xd9c320CMD=UI DATA

<0011> gprs_bssgp.c:503 BSSGP BVCI=0 TLLI=d527d1cf Rx LLC DISCARDED

<0011> gprs_bssgp.c:376 BSSGP TLLI=0xd527d1cf Rx UPLINK-UNITDATA

<0012> gprs_llc.c:551 LLC SAPI=1 C   FCS=0x26346bCMD=UI DATA

<0011> gprs_bssgp.c:503 BSSGP BVCI=0 TLLI=d527d1cf Rx LLC DISCARDED

<0011> gprs_bssgp.c:376 BSSGP TLLI=0xd527d1cf Rx UPLINK-UNITDATA

<0012> gprs_llc.c:551 LLC SAPI=1 C   FCS=0x4a642eCMD=UI DATA

Please let me know if you need more logs or packet dump.

I will be reverting to older revisions to find out when exactly it got broken

Regards,

Pierre