diff options
| author | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2014-09-05 14:32:36 +0200 |
|---|---|---|
| committer | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2014-10-27 10:50:36 +0100 |
| commit | 78ecaf0561bfed3f09ce9c180434da59e71202bd (patch) | |
| tree | e90c99ff795d14d96ff37c358179a9e5581bbcab /openbsc/include/openbsc/gprs_llc.h | |
| parent | 99985b5ea8e2d69d1e63a9423fbe40b872b0c0f5 (diff) | |
sgsn: Send detach(re-attach) instead of gmm status if TLLI unknown
The osmo-sgsn sends Status messages (or nothing in case of non
GMM/GSM) when the TLLI is unknown. This prevents the MS from
reconnecting.
This patch adds the initiation of an MT detach procedure to force a
re-attach to set up a valid LLE context if an LLE or an MM context
cannot be found. Since this can also be triggered by non-GMM SAPI
messages, a GPRS application callback sgsn_force_reattach_oldmsg is
added which in turn calls the GMM layer to generate the GSM 04.08
specific messages.
Note that the MS can be left in REGISTERED state after initially
wanting to detach itself, since it will receive a Detach Req
(re-attach) when sending a DEACT PDP CTX REQ after the SGSN or
gbproxy (P-TMSI patching enabled) has been restarted. This same
behaviour has been observed with another SGSN.
Sponsored-by: On-Waves ehf
Diffstat (limited to 'openbsc/include/openbsc/gprs_llc.h')
| -rw-r--r-- | openbsc/include/openbsc/gprs_llc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/openbsc/include/openbsc/gprs_llc.h b/openbsc/include/openbsc/gprs_llc.h index 9689a3766..fc6216ccc 100644 --- a/openbsc/include/openbsc/gprs_llc.h +++ b/openbsc/include/openbsc/gprs_llc.h @@ -207,6 +207,7 @@ int gprs_llc_tx_ui(struct msgb *msg, uint8_t sapi, int command, /* Chapter 7.2.1.2 LLGMM-RESET.req */ int gprs_llgmm_reset(struct gprs_llc_llme *llme); +int gprs_llgmm_reset_oldmsg(struct msgb* oldmsg, uint8_t sapi); /* 04.64 Chapter 7.2.1.1 LLGMM-ASSIGN */ int gprs_llgmm_assign(struct gprs_llc_llme *llme, |