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81 Commits

Author SHA1 Message Date
Sukchan Lee 01a7b3c9b8 Follow-up on #1991 2023-01-14 09:20:52 +09:00
jmasterfunk84 3fd7ecc9a2
[MME] Add Purge-UE Capability (#1991) 
* [MME] Add Purge-UE Capability

* Add OGS_GTP_..._PURGE_AND_REMOVE to split CLR case
 2023-01-14 09:13:48 +09:00
Sukchan Lee a4dc990bf1 Added more log in GTP Error (#1920) 2022-12-02 09:10:49 +09:00
Sukchan Lee dc6ca962bb Follow-up on #1797 2022-10-06 10:10:31 +09:00
Sukchan Lee 6d27fbb8cc Follow-up on #1797 2022-10-05 14:50:52 +09:00
jmasterfunk84 15680003b5
[MME] Cancel Location while Idle (#1797) 
* Cancel Location while Idle Fix

* Forgot about SGSAP on MME Change.

Added "action" to sgsap_send_detach..

* Make handle_clr uniform with other handlers

* Added Robustness for Any Detach Type

* Memory wasn't freed upon CLR for unknown IMSIs

* Moving MME Detach to new PR
 2022-10-05 11:06:01 +09:00
Sukchan Lee 721f5e212c [GTP] Changes the print message (#1772) 2022-09-25 19:16:32 +09:00
Sukchan Lee 9bb9a4cae9 [MME] Detach removed MME-UE context (#1698) 2022-08-20 00:17:55 +09:00
Sukchan Lee a9694d6474 [MME] Follow-up Cancel Location Handling (#1698) 2022-08-19 16:52:39 +09:00
jmasterfunk84 c98333bbfe
[MME] Cancel Location Handling (#1698) 
* CLR while idle is broken after 7031856cd7

Cancel Location Request arriving while UE is idle will not proceed to paging due to this check for S1 connection.  Using new flag "isAnswer" to bypass this check to allow paging to occur when we are not doing a AIA/ULA related procedure.

* No Context Setup is required when sending the detach request.  If the paging was due to wanting to send a Detach Request to the UE, then we fast track to sending the detach request.

* emm-sm.c:
In the case of MME initiated detach while UE is idle, there is no initial conext setup.  We go right from the service request after paging into sending the detach request.  TS23.401

mme-path.c:
Using nas_eps.type in the case of MME Initiated Detach while UE is idle does not work.  nas_eps.type would represent the service request.

mme-s11-handler.c:
After S11 action, no action should be taken.  We want to wait for the detach accept from the UE before proceeding with the S1 release (detach).

* InitialContextSetup should occur for detach.
 2022-08-19 16:44:06 +09:00
Sukchan Lee 4cb657c804 [MME] Changed CauseNas_detach in DETACH (#1676) 2022-08-06 14:00:54 +09:00
Sukchan Lee 5524dc5e29 Refact paging module (#1676) 2022-07-30 14:44:34 +09:00
jmasterfunk84 47cbaca149 [MME] Introduce support for S6a Cancel Location Request 
- Added diameter dictionary definitions for Cancel Location
- Cancel Location will completely remove UE from MME, allow for a fresh IMSI attach to occur on next attempt.
- T3422 is used for detach request.
- Added new handling for s6a events in mme-sm, as not all s6a messages are at attach now.  Maybe there's something in a state machine I should've been using here instead of a new flag?

- Testing was completed with UE in idle and connected.  With CLR flags indicating re-attach required and without.  Also sending CLR after UE detach.  And then sending again when mme_ue is empty.
 2022-07-30 14:37:43 +09:00
Sukchan Lee 668cc59f94 [AMF] Fixed 5GMM cause in Reject message (#1660) 
When a UE that requests slices tries to connect and there are no slices configured, the reject message is:

5GMM cause = 0x7 (5GS Services not allowed)

however it should be:

5GMM cause = 0x3e (No network slices available)

All 5GMM cause value in reject message is reviewed in this commit
 2022-07-19 12:42:02 +09:00
Sukchan Lee 50be661cf9 Fixed a crash when slice/session overflow (#1637) 2022-06-30 13:33:16 +09:00
Sukchan Lee 6332f10593 Revert "[GTP] context when TEID=0 (#1620, #1606, #1594)" 
This reverts commit 0d61f7a7f9.
 2022-06-30 09:11:31 +09:00
Sukchan Lee 0d61f7a7f9 [GTP] context when TEID=0 (#1620, #1606, #1594) 2022-06-28 15:32:14 +09:00
Sukchan Lee afc562f7d5 [MME] refine Pull Request (#1497) 2022-05-15 22:37:38 +09:00
Sukchan Lee 4d2f7726b9 X2 handover with SGW change (#1367, #1459) 2022-05-12 22:52:36 +09:00
Sukchan Lee de2ecd6400 [GTP2] Fixed handling multi-bearer messages(#1498) 2022-04-29 21:28:16 +09:00
Sukchan Lee 433d5f6bf3 Distinguish the type of session creation 2022-04-14 17:34:55 +09:00
Pau Espin e3da7c9934
Rename GTPv2C specifics to gtp2 prefix (#1485) 
In the past only GTPv2C was supported, and had the "gtp" generic prefix.
Later on, GTPv1C support was added, and "gtp1" prefix was used.
Let's move GTPv2C specific bits to have "gtp2" prefix too, and leave
"gtp" prefix for generic stuff among different GTP versions.
 2022-04-13 07:07:39 +09:00
Sukchan Lee 37af21a88d [MEM] fix the pkbuf problem (#1431) 2022-03-22 22:47:45 +09:00
Sukchan Lee bf77318602 [MME] re-factor to check a piggybacked ESM (#1431) 2022-03-16 20:48:48 +09:00
Sukchan Lee af3db1770f [SMF] incorrect GTP cause with changed APN (#1360) 
SMF setting incorrect Cause when answering
with a changed APN type IPv4v6 ->IPv4/IPv6
 2022-02-23 20:16:04 +09:00
Sukchan Lee b4f382d360 [MEM] fix pkbuf problem in multi-threads (#1353) 
We should use talloc in multi-threads instead of pkbuf.
Now, pkbuf library only uses single-thread environment.
 2022-02-19 09:47:44 +09:00
Sukchan Lee 83d56fe40d [ALL] Fix the memory leak (#1282) 2022-01-31 22:58:52 +09:00
Sukchan Lee 448e07d5a9 [AMF/MME] fix the crash during reset (#1268) 2021-11-30 22:22:41 +09:00
Sukchan Lee b35febd9c4 [MME] fix the crash during GTP no context (#1205) 
This bug occurs when SGW-C restarts and the next signal occurs
between MME and SGW-C
- Create Session Request/Response
- Modify Bearer Request/Response
 2021-10-16 14:11:43 +09:00
Sukchan Lee 3564fe5c8c [SMF/UPF] Clarify FALLBACK SUBNET [#1128] 2021-08-14 16:52:53 +09:00
Sukchan Lee 1326fc85dc [MME] fix the bug when GTPv2 conflict (#1095) 2021-07-15 21:20:56 +09:00
Sukchan Lee 4537142929 [EPC] Support ePDG Interface (#1039) 2021-06-21 22:36:38 +09:00
Sukchan Lee 118d62d42d Add more memory log 2021-06-06 22:35:46 +09:00
Sukchan Lee 873cf398c7 [ALL] Add protection of message encoding (#991) 
All process will be forcely exited if it failed to encode the S1AP/NGAP/GTP/PFCP message. It is to make sure there was no problem with the encoding of open5gs.
 2021-05-16 12:22:10 +09:00
Sukchan Lee 22b09443ce feat: E-RABModificationIndication/Confirm (#834) 2021-03-17 14:26:57 +09:00
Sukchan Lee 9af4268bab arch: DB schema Changes (#796) 
- New function : NSSF
- New feature : SMF selection
 2021-03-08 21:25:09 +09:00
Sukchan Lee ff5236f3e0 feat: Indirect Data Forwarding in N2-Handover 2021-01-31 23:01:15 -05:00
Sukchan Lee 49a9e58efe feat: Add N2-Handover 2021-01-28 14:23:54 -05:00
Sukchan Lee ada01fca8f spec: S1AP/NGAP update to v16.4.0(2021-01-04) 2021-01-24 23:43:42 -05:00
Sukchan Lee 8d0ce5b03c Oops! Remove bearer after sending reject (#755) 2021-01-11 00:01:28 -05:00
Sukchan Lee 5fb0611cb2 fix: Derive ESM cause from GTP-Cause (#755) 2021-01-10 23:36:12 -05:00
Sukchan Lee c9cfc4cf6e etc: update debug message 2021-01-04 23:24:22 -05:00
Sukchan Lee 235a041b8d feat: Add dedicated QoS flow 2020-12-31 21:07:08 -05:00
Sukchan Lee 2392f23d7f fix: the unexpected PDN type error (#721) 2020-12-16 22:44:32 -05:00
Sukchan Lee f1a207fd9b Support VoLTE service in ECM-IDLE 2020-11-07 17:27:12 -05:00
Sukchan Lee 93312e8f3d Fix the bug for S1-reset or eNB-restart(#627) 2020-10-28 22:59:27 -04:00
Sukchan Lee a470131489 Now, F-TEID is allocated in the UP function. 2020-10-25 22:43:53 -04:00
Sukchan Lee aa81bb2c89 Fix the bug #619 
When missing Activate default EPS bearer context accept
between UE and eNB, MME's exception handler has a bug.

So I've fixed it!
 2020-10-23 13:48:39 -04:00
Sukchan Lee 15e42bc4a9 Fix MME crash when VoLTE is enabled [#619] 2020-10-22 17:53:13 -04:00
Sukchan Lee 1bed0d5872 [#568] Add GTP-U Error Indication Handling 
So far, no operation was performed when Error Indication was received
from eNodeB. For that reason, I solved #568 issues by controlling
the MME to prevent this from happening.

Now, when GTP-U Error Indication is received, MME and SGW are implemented
to do what they have to do. I hope that the network can be restored
by responding appropriately even if Error Indication occurs.
 2020-10-20 20:00:02 -04:00