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35 Commits

Author SHA1 Message Date
Sukchan Lee 817007d0ae [AMF] Wrongly sending PDU Session Release (#1925) 2022-12-04 14:32:19 +09:00
mitmitmitm b9f6432e54 [AMF] Support REREGISTRATION_REQUIRED in dereg notify 2022-10-26 14:40:41 +09:00
Sukchan Lee eb50d64271 Add more protection code for (#1652) 2022-07-21 17:13:32 +09:00
Sukchan Lee 9aa5559c5f Refactor for the UERANSIM 500 test (#1652) 2022-07-21 12:41:19 +09:00
Sukchan Lee f35afa2ff7 Add missing pkbuf_free() (#1652) 2022-07-21 01:00:44 +09:00
Sukchan Lee 2b41a215d7 Fixed the crash in UERANSIM 500 test (#1652) 2022-07-21 00:02:31 +09:00
Bostjan Meglic aa3cded11a [AMF] Handle namf-callback DeregNotify message from UDM 
UDM may send a Deregistration Notification to AMF, to deregister
specific UE from the network - Network-Initiated Deregistration.
Deregistration procedure includes sending Deregistration Request to UE,
starting a timer T3522, releasing PDU sessions from SMF, releasing PCF
policies from PCF, and waiting for Deregistration Accept from UE.

Not yet implemented is:
- to prevent deregistration of UE in case it has any emergency sessions,
- page UE when UE is in IDLE mode.
 2022-07-11 22:53:21 +09:00
Sukchan Lee d7e23b7f6a [AMF] Registration reject for foreign IMSI (#1281) 2021-12-08 21:05:16 +09:00
Sukchan Lee 0fb8279e36 VoNR added but not tested! 2021-11-14 21:07:56 +09:00
Sukchan Lee e5594a57b9 [AMF] fix an invalid GSM reject aligungr#375 
TS24.501
8.2.11 DL NAS transport
8.2.11.4 5GMM cause

The AMF shall include this IE when the Payload container IE
contains an uplink payload which was not forwarded and
the Payload container type IE is not set to "Multiple payloads".

-0-
As such, this function 'nas_5gs_send_gsm_reject()' must be used
only when an N1 SM message has been forwarded to the SMF.
 2021-08-14 12:01:13 +09:00
Sukchan Lee 50f403279a [AMF/MME] fix the crash bug (#1061) 2021-06-22 16:13:06 +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 dcfc9ef803 [AMF/MME] Add retransmission for accept message 
Registration accept with GUTI
Attach accept
Tracking area update request with GUTI
 2021-04-23 15:16:18 +09:00
Sukchan Lee 61778f9142 fix: UE Context Request IE handling (#771) 2021-01-23 13:42:59 -05:00
Sukchan Lee 776d323a16 fix: Change UE Context Request IE handling (#771) 
Previously, AMF would sends PDUSessionResourceSetupRequest
when the following conditions were met:
- gNB didn't send UE Context Request IE of InitialUEMessage
- AMF should send SMF generated TRANSFER message(PDU_RES_SETUP_REQ)
to the gNB

However, in issues #771, the gNB did not accept
PDUSessionResourceSetupRequest. Perhaps the gNB engineer thought
that if gNB needs to send data traffic to the UE, AMF should send
an InitialContextSetupRequest regardless of UE Context Request IE.
This is because gNB requires the kgNB security context
for data connection.

So, in this case, Open5GS-AMF decided to send
an InitialContexSetupRequest regardless of
whether it received UE Context Request IE of InitialUEMessage.
 2021-01-23 11:56:04 -05:00
Sukchan Lee c9363b1320 5gc: Paging was added 2021-01-18 11:48:35 -05:00
Sukchan Lee 7b29cdf898 Handling UEContextRequest of InitialUEMessage 2021-01-07 22:26:06 -05:00
Sukchan Lee c9cfc4cf6e etc: update debug message 2021-01-04 23:24:22 -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 d64db21050 Use GTP-U Buffering instead of Deletion[#592,#568] 2020-10-07 21:21:48 -04:00
Sukchan Lee 3554419d97 Fix the connection refused bug [#568, #551] 2020-09-24 21:29:48 -04:00
Sukchan Lee 7ae1600e04 Add exception handling for #568 
If packet buffer is exhausted, the packet is sliently discarded
 2020-09-18 19:39:02 -04:00
Sukchan Lee 9eea6fe583 rollback commit 6124908133 2020-09-11 20:38:36 -04:00
Sukchan Lee 6124908133 Handle UL NAS Transport [#553] 
o Tester
1. UE registered to 5GS and can connect to internet.
2. Turn off the UE and turn on the UE immediately
3. UE send PDU session request message
   without sending registration complete

o Analysis Result
1. UE sends registration request with unknown GUTI
2. AMF send registration accept without GUTI
3. UE skips the registration complete

So, we need the handler UL NAS Transport in this state.
 2020-09-10 10:51:18 -04:00
Sukchan Lee bcffdd823e Re-factoring 5GC for solving crash issue 2020-08-02 23:22:41 -04:00
Sukchan Lee 06a5566128 Add NRF debug/trace for finding crash [#512] 2020-07-26 14:54:30 -04:00
Sukchan Lee 7bb1c7055f Remove ACK in configuration update [#487] 2020-07-09 17:34:41 -04:00
Sukchan Lee ad12949469 Add ACK in configuration upate command [#487] 2020-07-02 02:16:52 -04:00
Sukchan Lee d9743286c5 Add PDU Session Release [#488] 2020-07-02 01:50:23 -04:00
Sukchan Lee 6e84ac670d Bug fixed for 5G core 2020-06-25 00:37:29 -04:00
Sukchan Lee d652075ab9 a couple of bug is fixed 2020-06-24 00:33:10 -04:00
Sukchan Lee b35c2277be simple 5GC registration is done 2020-06-21 23:10:54 -04:00
Sukchan Lee dbee687a75 Add only one 5GC scenario (call-flow) 2020-06-17 01:22:28 -04:00
Sukchan Lee 72370ff0b2 Add AUSF, UDM, and UDR 2020-06-04 14:12:05 -04:00