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73 Commits

Author SHA1 Message Date
Sukchan Lee 2ceca49161 [MME/AMF] Fixed crash following Handover Request (#3014) 
1. HandoverRequired
2. HandoverRequest
3. HandoverFailure
4. UEContextReleaseCommand
5. HandoverPreparationFailure

If UEContextReleaseComplete is not received,
the Source-UE will have the Target-UE.

6. HandoverRequired

There may be cases where the Source UE has a Target UE
from a previous HandoverRequired process. In this case,
it is recommended to force the deletion of the Target UE information
when receiving a new HandoverRequired.

7. HandoverRequest
8. HandoverFailure
9. UEContextReleaseCommand
10. UEContextReleaseComplete
11. HandoverPreparationFailure

... Crashed ...
 2024-02-29 23:02:38 +09:00
Pau Espin 8f58b55e14 [MME] Fix incorrect function name printed in error line 2024-01-05 05:52:56 +09:00
Sukchan Lee a3a683e5a6 [MME] Implement ENBConfigurationUpdate (#2589) 2023-09-16 20:58:58 +09:00
Sukchan Lee b08b2adc6c [AMF/MME] Remove code that doesn't work (#2013) 
Based on the standard document below, when the UE is in the IDLE state,
we checked the implicit timer and tried to send a message to the UE,
but it doesn't work properly.

So, first of all, I deleted the related code.

- TS 24.301 Ch 5.3.7
If ISR is not activated, the network behaviour upon expiry of
the mobile reachable timer is network dependent, but typically
the network stops sending paging messages to the UE on the
first expiry, and may take other appropriate actions

- TS 24.501 Ch 5.3.7
The network behaviour upon expiry of the mobile reachable timer is network dependent,
but typically the network stops sending paging messages to the UE on the first expiry,
and may take other appropriate actions.
 2023-07-23 14:54:06 +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
Sukchan Lee 32019df0f0 Fixed MacOSX compile error 2023-04-04 21:53:39 +09:00
Sukchan Lee 82e9016164 [AMF/SMF] Fixed a crash (#2030, #2074, #2085) 2023-02-20 20:49:48 +09:00
jmasterfunk84 1e6b1d4f7b
[MME] Implicit Network-initiated Deregistration (#2013) 
* [MME] Introduce aging timers

* Creating three new timers
* mirroring work done by gstaa on the AMF
* Implicit detach procedures added
* Fix for detach from unknown UE

* no Purge Timer, no config, expanded code
 2023-01-26 21:22:17 +09:00
Sukchan Lee 11aac6a164 [CORE] Rollback ogs_pkbuf_copy() from (#2012) 
In the previous #2012 working, I've added ogs_pkbuf_free() for original
buffer. But, this rasied double free. So, I've rollback it,
 2023-01-24 00:17:10 +09:00
Sukchan Lee 689574a2d9 [AMF/MME] Fixed crash when no NG/S1 context(#2012) 2023-01-23 10:37:22 +09:00
Sukchan Lee 82863653eb Follow-up on #1828 2022-10-11 17:44:55 +09:00
Sukchan Lee 1d17e68c56 [ALL] Removing trailing whitespace and tab 2022-09-02 23:38:39 +09:00
Sukchan Lee 321c8d4cf9 [SGsAP] Changed message if Paging failed (#1701) 
The problem occurred in the following scenario:

1. VLR sent PAGING-REQUEST to the MME
2. MME sent S1-Paging to the UE
3. Paging failed
4. MME responded SERVICE-REQUEST to the VLR
5. VLR sent DOWNLINK-UNITDATA to the MME
6. Even though there is no S1 Context,
   MME try to sent DownlinkNASTransport message to the UE.
7. So, the problem occurred.

I've changed the number 4 PAGING-REJECT instead of SERVICE-REQUEST.
 2022-08-19 18:58:55 +09:00
Sukchan Lee e6a14cb73d Move src/../nf-sm.[ch] to lib/sbi/nf-sm.[ch] 2022-08-12 14:03:53 +09:00
Sukchan Lee 5e18b2bd13 [SCP] Support of Indirect Communication 2022-07-16 13:27:18 +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
Sukchan Lee bf77318602 [MME] re-factor to check a piggybacked ESM (#1431) 2022-03-16 20:48:48 +09:00
Sukchan Lee 74bbc6ecbf [MME] Add S1AP debug (#1263) 2021-12-11 17:28:05 +09:00
Sukchan Lee ab7f565dd6 [MME/AMF] Use Non-UE signalling in Paging (#1134) 2021-08-18 19:42:27 +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 793a82020f [ALL] Init updated for an Invalid IP (#938) 2021-04-21 17:24:17 +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 b6bcbac3e3 fix: Add the exception handling (#804) 
When UE/gNB repeatedly sends NGAP message repeatedly, AMF crashed.
Exception routines have been added to resolve this issue.
 2021-02-15 12:17:33 -05:00
Sukchan Lee 5e839e25fe fix: amf crash bug (#793) 2021-02-03 23:49:16 -05:00
Sukchan Lee 49a9e58efe feat: Add N2-Handover 2021-01-28 14:23:54 -05:00
Sukchan Lee 9eac90252e fix: AMF/SMF/UDM crash issues resolved (#770/#771) 2021-01-22 22:17:01 -05:00
Sukchan Lee c9363b1320 5gc: Paging was added 2021-01-18 11:48:35 -05:00
Sukchan Lee c9cfc4cf6e etc: update debug message 2021-01-04 23:24:22 -05:00
Sukchan Lee 6f11a78079 If SCTP use SOCK_STREAM, Use BUFFERING method. 
Most of the time, an application wants to perform some amount of data buffering
in addition to just responding to events. When we want to write data,
for example, the usual pattern runs something like:

1. Decide that we want to write some data to a connection;
   put that data in a buffer.
2. Wait for the connection to become writable
3. Write as much of the data as we can
4. Remember how much we wrote, and if we still have more data to write,
   wait for the connection to become writable again.

Now, Open5GS implements the above method by default when transmitting data
in a stream type socket.
 2020-11-11 13:21:32 -05:00
Sukchan Lee 830587a250 Fix the possible vulnerabilities 2020-11-07 21:25:53 -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 3554419d97 Fix the connection refused bug [#568, #551] 2020-09-24 21:29:48 -04:00
Sukchan Lee 8c7d401636 fix the bug OGS_ADDR crash [#551] 2020-09-22 21:20:13 -04:00
Sukchan Lee d148012d82 Fix the MME crash #551 2020-09-21 20:06:41 -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 160490483a Fix the many UEs issues [#551] 2020-09-07 22:02:45 -04:00
Sukchan Lee 4d023d0de0 fix overflow bug in the packet memory pool 2020-09-06 23:53:38 -04:00
Sukchan Lee 3c3bac6812 4G/EPC: Maintaining Old NAS signalling [#546] 2020-09-03 19:59:00 -04:00
Sukchan Lee 18c483950c Change Number of UEs usage [#533] 
- Set the number of UEs in units of AMF/MME instead of gNB/eNB.
- See default value as shown below
    Number of UEs per AMF/MME : 4,096
    Number of gNB/eNB per AMF/MME : 32
 2020-08-25 23:05:01 -04:00
Sukchan Lee 8e048be082 Release v2.0.0 2020-08-21 23:33:45 -04:00
Sukchan Lee 6ef5a746e5 NGSetup is added 2020-05-25 12:15:22 -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 ae75f43a88 Initial proposal CUPS using PFCP 2020-04-26 15:36:05 -04:00
Spencer Sevilla 66f839592f assign enb_ue_s1ap_id as a part of enb_ue_add function (#326) 2019-12-13 13:46:22 +09:00
Sukchan Lee 636170e0da Review ogs_expect() (#314) 2019-11-30 16:45:09 +09:00