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Author SHA1 Message Date
Sukchan Lee 3886891833 [MME] Crash due to a race condition 
A race condition can occur in the following situations.
In conclusion, we can use this situation to determine
whether or not the UE Context has been removed and avoiding a crash.

For example, suppose a UE Context is removed in the followings.

1. Attach Request
2. Authentication-Information-Request
3. Authentication-Information-Answer
4. Authentication Request
5. Authentication Response(MAC Failed)
6. Authentication Reject
7. UEContextReleaseCommand
8. UEContextReleaseComplete

The MME then sends a Purge-UE-request to the HSS and deletes
the UE context as soon as it receives a Purge-UE-Answer.

Suppose an Attach Request is received from the same UE
between Purge-UE-Request/Answer, then the MME and HSS start
the Authentication-Information-Request/Answer process.

This can lead to the following situations.

1. Purge-UE-Request
2. Attach Request
3. Authentication-Information-Request
4. Purge-UE-Answer
5. [UE Context Removed]
6. Authentication-Information-Answer

Since the UE Context has already been deleted
when the Authentication-Information-Answer is received,
it cannot be processed properly.

Therefore, mme_ue_cycle() is used to check
whether the UE Context has been deleted and
decide whether to process or
ignore the Authentication-Information-Answer as shown below.
 2024-01-25 23:27:34 +09:00
Sukchan Lee e42048e8a5
Reset the number of TA, SLICE, and PLMN supported by AMF/MME(#2761) (#2765) 
* update it

* update it

* update it

* update it

* update it

* udpate it

* uupdate it
 2023-12-03 23:52:29 +09:00
Sukchan Lee a3a683e5a6 [MME] Implement ENBConfigurationUpdate (#2589) 2023-09-16 20:58:58 +09:00
Pau Espin 5c0c8ec4f2 mme: s1ap: Implement tx of MME DIRECT INFORMATION TRANSFER 
Triggered when receiving a GTPv1C RAN Information Relay message on
Gn interface, targeted at one of the eNBs under the MME.
 2023-07-15 23:44:57 +09:00
Pau Espin 715038b6d9 cosmetic: mme: Fix trailing whitespace in several files 2023-07-11 21:52:24 +09:00
Sukchan Lee 82e9016164 [AMF/SMF] Fixed a crash (#2030, #2074, #2085) 2023-02-20 20:49:48 +09:00
Sukchan Lee 85981effc7 [AMF/AMF] Not assert for ogs_asn_copy_ie() (#2018) 
Does not raise an assertion even if open5gs cannot handle the ASN in
ogs_asn_copy_ie()
 2023-01-25 23:16:59 +09:00
Sukchan Lee 4d2f7726b9 X2 handover with SGW change (#1367, #1459) 2022-05-12 22:52:36 +09:00
Sukchan Lee a1be48ed50 [SGW-C] fix the crash (#1353) 2022-03-05 11:27:22 +09:00
Sukchan Lee 74bbc6ecbf [MME] Add S1AP debug (#1263) 2021-12-11 17:28:05 +09:00
Sukchan Lee d8655e07c6 Oops! fix the mistake in previous commit (83aac49) 2021-11-28 17:54:33 +09:00
Sukchan Lee 83aac49fd0 [MME] Add log (#1263) 2021-11-28 17:05:31 +09:00
Sukchan Lee af5b3aa931 [MME/AMF] fix the crash during timeout (#1122) 2021-08-08 12:38:15 +09:00
Sukchan Lee cc03c91bdd [AMF] 5G-GUTI generation changed (#910) 
The AMF shall assign a new 5G-GUTI for a particular UE:
a) during  a successful initial registration procedure;
b) during a successful registration procedure
   for mobility registration update; and
c) after a successful service request procedure invoked as a response
   to a paging request from the network and before the release
   of the N1 NAS signalling connection as specified in subclause 5.4.4.1.

The AMF should assign a new 5G-GUTI for a particular UE
during a successful registration procedure
for periodic registration update. The AMF may assign a new 5G-GUTI
at any time for a particular UE by performing
the generic UE configuration update procedure.
 2021-04-13 17:34:25 +09:00
Sukchan Lee 52cd51ca6a fix: adjust the actual path amf.plmn_support (#825) 2021-03-20 09:17:14 +09:00
Sukchan Lee dc474329e2 Fix the MME crash during HandoverCancel (#855) 2021-03-18 22:59:22 +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 373ba1452f log: update debug info for S1AP/NGAP (#785) 2021-02-01 08:52:22 -05:00
Sukchan Lee ff5236f3e0 feat: Indirect Data Forwarding in N2-Handover 2021-01-31 23:01:15 -05:00
Sukchan Lee 388e64213f etc: miscellaneous work (#779) 
o Check IMEISV length == 16 digits
o Add Relative Capabity comment in the configuration file
 2021-01-29 00:10:17 -05:00
Sukchan Lee 49a9e58efe feat: Add N2-Handover 2021-01-28 14:23:54 -05:00
Sukchan Lee c9363b1320 5gc: Paging was added 2021-01-18 11:48:35 -05:00
Sukchan Lee 55e9f08430 Add special sponsors 2021-01-11 11:10:17 -05:00
Sukchan Lee 6946dc4998 fix: update to avoid MME crash (#708) 2021-01-07 22:41:13 -05:00
Sukchan Lee 235a041b8d feat: Add dedicated QoS flow 2020-12-31 21:07:08 -05:00
Sukchan Lee f1a207fd9b Support VoLTE service in ECM-IDLE 2020-11-07 17:27:12 -05:00
Sukchan Lee f137d1947f Last Modification for releasing v2.0.19 
1. SCTP event size workaround - stolen code from libosmo-netif
2. Remove PFCP User Plane IP resource information
3. Fix the bug when building Initial Context Setup Request with EMM NAS message.
 2020-10-31 00:30:42 -04:00
Sukchan Lee 93312e8f3d Fix the bug for S1-reset or eNB-restart(#627) 2020-10-28 22:59:27 -04:00
Sukchan Lee 887a0a10d3 Fixing the problem of the test program 2020-09-01 23:04:35 -04:00
Sukchan Lee bc476c2e0e Instead of OGS_NEXT_ID, Use memory pool-index 2020-08-29 23:27:54 -04:00
Sukchan Lee 8e048be082 Release v2.0.0 2020-08-21 23:33:45 -04:00
Sukchan Lee fae342ecce Apply Release-16 in 4G EPC(S1AP,NAS,GTP) 2020-07-01 00:22:55 -04:00
Sukchan Lee ca4ee27e84 more bug is fixed 2020-06-27 00:46:06 -04:00
Sukchan Lee c54e85c5c0 Session-AMBR changes required field in WebUI 2020-06-17 21:43:16 -04:00
Sukchan Lee 72370ff0b2 Add AUSF, UDM, and UDR 2020-06-04 14:12:05 -04:00
Sukchan Lee 9bfb4591ea Add MMEName in S1SetupResponse [#444] 2020-05-25 12:34:05 -04:00
Sukchan Lee 6f6800b52e NGAP is added 2020-05-22 22:24:48 -04:00
Sukchan Lee 82eebc3b80 Rollback mme_enb_pool instead of ogs_calloc (#423) 2020-04-26 22:18:47 -04:00
Sukchan Lee 636170e0da Review ogs_expect() (#314) 2019-11-30 16:45:09 +09:00
Sukchan Lee 2cd9f496e2 This bug has already been fixed 2019-11-30 14:32:49 +09:00
Spencer Sevilla 5b59f09d9f ogs_assert to ogs_expects (#314) 
* HACK: Don't retransmit InitialContextSetupReq

Related: #256

* HACK: Don't use buggy sa1p_copy()  in eNBConfigTransfer

Related: #257

* mme: don't reject with 'IMSI is unknown in HLR' (permanent reject)

* MME: Implement S6a result -> EMM cause code mapping

Closes: #263

* Spencer: modification to Haralds fix because macros are now renamed

* MME: don't assert on MAC failures of uplink NAS frames

Closes: #267

* MME: Avoid ogs_assert() in many situations

We don't want to crash the entire program just because a message
received from an external entity didn't match some of our expectations.

* compiles fine, checked DIFFs and only difference is the ogs_assert -> ogs_expect
 2019-11-29 15:31:22 +09:00
Sukchan Lee 3c8af69805 Re-factoring the all library 2019-09-13 21:07:47 +09:00
Sukchan Lee a3c5dcd190 [#231] Fix the NextEPC die in MT-Fallback 2019-07-28 15:09:23 +00:00
Sukchan Lee dba1fcac5c Use asn1c library interface(CALLOC) for s1ap memory 2019-07-24 21:03:36 +09:00
Sukchan Lee f19009c736 [#231] Hotfix for asn1c library 
Workaround for asn1c library
- More than 9 ProtocolIE cannot be built from InitialContextSetupRequest
 2019-07-21 22:39:23 +09:00
Sukchan Lee 78eeb1ad45 [#231] TAI-LAI configuration changed 2019-07-21 20:25:29 +09:00
Sukchan Lee 99d91da6eb Clarify code for pull request (#223) 2019-07-14 11:00:11 +09:00
Romeu Medeiros a6fe0cb44f Changes to obey the 3GPP specification for CSFallback 2019-07-13 20:26:39 -03:00
Sukchan Lee 7d42465f4e [Done] SMS over SGs 2019-07-13 22:52:50 +09:00