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2017-10-26remove sgsn, gbproxy and gtphub from openbsc.gitHarald Welte1-35/+0
The GPRS related programs osmo-sgsn, osmo-gtphub and osmo-gbproxy have been split off into the separate osmo-sgsn repository, which can be found at git://git.osmocom.org/osmo-sgsn.git http://git.osmocom.org/osmo-sgsn/ This is technically unrelated but conceptually part of the larger NITB-split activities. I did a brief log of all changes in src/gprs and couldn't find any commits that we might have applied here but which are missing from osmo-sgsn.git. Change-Id: If60e28b23f5cfb2c4eb354951363a2bb63f3e0de
2016-09-01IuPS: add Iu response to create_pdp_conf()Daniel Willmann1-0/+2
Change-Id: Iad65ca9b77c3166d4df9a58af527e6aef7e589ee
2016-09-01IuPS: osmo-sgsn: add core IuPS impl, call iu_init()Daniel Willmann1-0/+2
Add main Iu entry points for IuPS: * gsm0408_gprs_rcvmsg_iu() * sgsn_ranap_iu_event() * sgsn_ranap_rab_ass_resp() Add main MM context management for IuPS: * sgsn_mm_ctx_by_ue_ctx() * sgsn_mm_ctx_alloc_iu() Call iu_init() from sgsn_main.c. Add asn_debug impl ("extern" from libasn1c). Initialize asn_debug VTY command (iu_vty_init()). osmo-sgsn build: add libiu and libasn1c, libosmo-sigtran, libosmo-ranap Change-Id: I469ae6ca9ef254d04ee0d2d79bdd65aebcd027b5
2016-07-16SGSN: encrypt/decrypt only necessary framesMax1-1/+4
According to 3GPP TS 24.008 ยง 4.7.1.2 some GMM frames are not supposed to be ciphered. Propagate information about the necessity for encryption between MM <-> LLC to ensure only proper frames are encrypted/decrypted/dropped. Change-Id: I0358905e60d1b182f75caec81bfcc72bbbbb2aa1 Related: OS#1582
2016-07-16SGSN: add preliminary support for GPRS encryptionMax1-1/+2
It is already functional enough to allow testing with real phones. However, note - there are several limitations in the current implementation: * only default value for IOV-UI is supported at the moment * AUTN-based key material is not supported Related: OS#1582 Change-Id: I8900b906693496e4e6b35be5a86937c58039ed9e
2016-06-02rename gsm0408_gprs_rcvmsg() to gsm0408_gprs_rcvmsg_gb()Harald Welte1-1/+1
This is the entry point for GMM from Gb. We will create a new one for Iu, so let's be explicit rather than implicit. Change-Id: I93c074bf99db041117c0dc03dc8255879845a875
2015-01-26sgsn: Remove inactive LLME/MM after inactivity timeoutJacob Erlbeck1-0/+2
Currently old LLMEs and MM contexts that haven't been explicitly detached or cancelled are not removed until another request with the same IMSI is made. These stale entries may accumulate over time and severely compromise the operation of the SGSN. This patch implements age based LLME expiry, when the maximum age has been reached, the corresponding MM context is cancelled. If such an MM context doesn't exist, the LLME is unassigned directly. The implementation works as follows. - llme->age_timestamp is reset on each received PTP LLC message - sgsn_llme_check_cb is invoked periodically (each 30s) - sgsn_llme_check_cb sets the age_timestamp to the current time if it has been reset - sgsn_llme_check_cb computes the age and expires the LLME if it exceeds gprs_max_time_to_idle() Ticket: OW#1364 Sponsored-by: On-Waves ehf [hfreyther: Fix typo in comment LMME -> LLME]
2015-01-18sgsn: Pass subscriber error causes to the GMM layerJacob Erlbeck1-2/+2
This patch extends gsm0408_gprs_access_denied and gsm0408_gprs_access_cancelled to accept GMM cause codes. These are then passed to the MS, unless gsm0408_gprs_access_cancelled is called with cause 0 (no error -> updateProcedure). Since gsm0408_gprs_access_denied uses GMM_CAUSE_GPRS_NOTALLOWED if the cause is not set, and the subscriber's error_cause is never set (and thus always 0), the SGSN's behaviour does not change with this patch. Sponsored-by: On-Waves ehf Conflicts: openbsc/include/openbsc/gprs_sgsn.h [hfreyther: Conflict due the removal of the unused authenticate flag]
2014-12-10sgsn: Integrate Auth & Ciph into gsm48_gmm_authorizeJacob Erlbeck1-0/+1
Currently the Authentication and Ciphering procedure is not yet invoked by the GMM layer. This patch starts this procedure from within gsm48_gmm_authorize when the mm->auth_state has been set to SGSN_AUTH_AUTHENTICATE and a call to gsm0408_gprs_authenticate has been issued directly or indirectly by the call to sgsn_auth_request. Sponsored-by: On-Waves ehf
2014-12-09sgsn: Add gsm0408_gprs_access_cancelledJacob Erlbeck1-0/+1
This function is called to delete an established MM context silently without invoking a detach procedure. It is called when a subscriber is cancelled by the HLR. This generally happens, when an MS has moved to another routing area and has to use another SGSN. Sponsored-by: On-Waves ehf
2014-11-14sgsn: Make authorization asynchronousJacob Erlbeck1-0/+2
Currently the authorization of an IMSI is done by checking ACLs synchronously which is not feasible when the subscriber data has to be retrieved from an external source. This patch changes this by using a callback when the information is available. This is also done when only ACL are checked, in this case the callback is invoked from within sgsn_auth_request(). The callback function sgsn_update_subscriber_data calls sgsn_auth_update which in turn calls either gsm0408_gprs_access_granted or gsm0408_gprs_access_denied. gsm48_gmm_authorize is extended by a call to sgsn_auth_request when IMSI and IMEI are available but the auth_state is unknown. The change has been successfully tested with single phones (E71 and IPhone 5c). Sponsored-by: On-Waves ehf
2014-11-14sgsn: Split gsm0408_gprs_force_reattach into 2 functionsJacob Erlbeck1-1/+2
This patch replaces gsm0408_gprs_force_reattach(msg, mmctx) by two functions - gsm0408_gprs_force_reattach(mmctx) - gsm0408_gprs_force_reattach_oldmsg(msg) The old function basically consists of the code of the two new functions, where the code path selected depends on mmctx == NULL, which is harder to maintain, less obvious to use, and not consistent with many other SGSN functions. Sponsored-by: On-Waves ehf
2014-10-27sgsn: Send detach(re-attach) instead of gmm status if TLLI unknownJacob Erlbeck1-0/+1
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
2011-03-23src: use new library libosmogsm and new path to headers in libosmocorePablo Neira Ayuso1-1/+1
libosmogsm is a new library that is distributed in the libosmocore. Now, openbsc depends on it. This patch gets openbsc with this change. This patch also rewrites all include path to the new osmocom/[gsm|core] Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
2010-12-26SGSN: Implement network-initiated PDP CTX DEACT when GGSN restartsHarald Welte1-0/+1
If the GGSN restarts, its restart counter will increase. We can detect that and accordingly release/delete all PDP contexts for that GGSN.
2010-06-09[GPRS] SGSN: Pass BSSGP SUSPEND/RESUME up to GMM and alter MMCTX stateHarald Welte1-0/+4
2010-06-01[GPRS] Major LLC / TLLI handling fixesHarald Welte1-1/+4
* separate the LLME and LLE state in the LLC layer * introduce gprs_llgmm_assign() function for LLGMM-ASSIGN.req primitive * change QoS profile to match 'real' SGSN * Update the new TLLI when assigning a P-TMSI The result now is that the LLC layer is notified of TLLI changes, which in turn means it doesn't allocate a new LLE structure every TLLI change, which again in turn means that the UI frame sequence number does not reset to zero. As a result, MS should no longer ignore frames based on wrong UI sequence number.
2010-05-18[GPRS] SGSN: properly delete a PDP context after receiving PDP CTX DEACT REQHarald Welte1-1/+2
2010-05-18[GPRS] add missing header file gprs_gmm.hHarald Welte1-0/+10
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