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43 Commits

Author SHA1 Message Date
Bostjan Meglic 474b2d4134 [SBI,NF] Don't treat SBI connection errors as asserts 2023-02-07 22:49:11 +09:00
Flander Bojan af07cc75ec Support for UPF HA - release/establish new PDU session 2023-02-04 22:40:33 +09:00
Sukchan Lee 8553c77733 [METRICS] Fixed a core dump in SMF/UPF/PCF (#1985) 2023-01-07 21:17:14 +09:00
Bostjan Meglic 0f5d968149 [SMF] Wait for both N1&N2 release signals before releasing session 
When UE would send a request to release PDU session, AMF would
eventually send "PDU Session Resource Release Command" downlink to both
UE (N1) and gNB (N2). Each UE and gNB would then reply with "PDU Session
Resource Release Response" indicating they released their own resources.

Usually the first one to respond would be gNB. SMF made an assumption
that this would always be the case. And it would wait for signal that UE
resources were freed, before releasing session resources. But
occasionally the situation is that UE responds first, and SMF releases
resources prematurely.

This situation does not normally occur. But under high stress (100's of
UE PDU releases at the same time) this happens occasionally.
According to the standard, this situation is perfectly normal.

3GPP TS 23.502 Rel. 16
4.3.4.2 UE or network requested PDU Session Release for Non-Roaming and
Roaming with Local Breakout
...
Steps 8-10 may happen before steps 6-7.
...
 2022-09-13 21:39:21 +09:00
Bostjan Meglic 87cd34d300 Minor typo fix 2022-09-07 18:01:21 +09:00
Sukchan Lee f020732ce9 [SBI] Support service-names in discovery option 2022-08-27 00:12:22 +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 a5010a61ef Support Discovery Optional Parameter (#1671) 
To support target-nf-instance-id in the discovery,
Discovery optional parameter is implemeted
 2022-07-24 15:10:09 +09:00
Pau Espin e1e8018919
[SMF] Avoid crash if Create{Session,PdpContext}Resp fails to be sent (#1566) 
* [SMF] Gn: Drop unreachable return line

* [SMF] Avoid crash if Create{Session,PdpContext}Resp fails to be sent

Crash spotted in a running open5gs-smfd process, triggered by:
ERROR: ogs_gtp_sendto() failed (1:Operation not permitted) (../lib/gtp/path.c:119)
ERROR: ogs_gtp_xact_commit: Expectation `rv == OGS_OK' failed. (../lib/gtp/xact.c:730)
ERROR: smf_gtp2_send_create_session_response: Expectation `rv == OGS_OK' failed. (../src/smf/gtp-path.c:451)
FATAL: smf_gsm_state_wait_pfcp_establishment: Assertion `OGS_OK == smf_gtp2_send_create_session_response( sess, gtp_xact)' failed. (../src/smf/gsm-sm.c:676)

* [SMF] Avoid crash if Delete{Sesson,PdpContext}Resp fails to be sent

Let's simply continuing with release of the session, there's not much we
can do about it. Peer will eventually realize the conn is no longer
there.
 2022-05-31 21:27:42 +09:00
Sukchan Lee 6710c13a44 update it 2022-05-17 21:44:52 +09:00
Sukchan Lee c391ac1334 [SMF] Apply 5G Core into GSM (#1498) 2022-05-15 06:27:54 +09:00
Sukchan Lee 4d2f7726b9 X2 handover with SGW change (#1367, #1459) 2022-05-12 22:52:36 +09:00
Pau Espin 2de12e32f4
[SMF] Integrate session tear down cycle into sess->sm (#1500) 
* [SMF] smf_sm.c Fix indentation

* [SMF] gsm-sm: log fsm events

* [SMF] Integrate session tear down cycle into sess->sm
 2022-04-20 21:42:18 +09:00
Pau Espin 5f979d0cc3
[SMF] Parallelize Gx+Gy CCR Initial (#1491) 
There's no real need to having to wait until Gx is processed in order to
set up Gy. This speeds up time required to set up the UE session.
 2022-04-15 07:00:32 +09:00
Pau Espin e61b469489
[SMF] Inegrate session setup cycle into sess->sm (#1489) 
It allows for much better control on the lifecycle of the session, and
already shows some missing tear down paths in case of errors.
It also clarifies the existence of "sess" pointer in several paths.

The code also becomes clearer overall, since all the transitions and
logic to send next messages are put together.

Tear down of the session will be integrated into gsm-sm in a follow-up
patch.

The 5gc session setup is only partially moved to gsm-sm, and left as an
exercise for users wishin to improve 5gc support.
 2022-04-14 10:30:58 +09:00
Sukchan Lee 72ecd1c005 [SMF] Remove T_RELEASE_HOLDING timer 2022-03-17 16:07:19 +09:00
Sukchan Lee cfd0193bbd [PCRF] fix the crash in flow->description (#1313) 2022-01-12 10:15:36 +09:00
Sukchan Lee 07a61018b2 [AMF] fix the crash (#1280) 
During PDU Session Establishment,
if gNB sends PDUSessionResourceReleaseResponse,
AMF was crashed.

In this case, AMF/SMF remove Session Context and sends ErrorIndication.
 2021-12-11 20:35:16 +09:00
Sukchan Lee acd67c7aa6 [5GC] Service Request Race Condition(#1226) 
When UE-triggered and Network-triggered Service Request was occurred at
the same time, we need UPF deactivation and UEContextRelease
 2021-11-28 20:54:51 +09:00
Sukchan Lee 0fb8279e36 VoNR added but not tested! 2021-11-14 21:07:56 +09:00
Sukchan Lee e730530f7b [SMF] Exception handling in session release(#1155) 
- UE changes the airplain-mode. However, it does not send PDU
    session complete message
    - Added exception handling for PDU session release
 2021-09-04 16:14:18 +09:00
Sukchan Lee 233db575ea [SMF] fix crash when BSF is not running [#1149] 2021-08-29 00:02:39 +09:00
Sukchan Lee 118d62d42d Add more memory log 2021-06-06 22:35:46 +09:00
Sukchan Lee fe89f7cd11 [5GC] Added BSF(Binding Support Function) 2021-05-29 15:56:12 +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 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 c9363b1320 5gc: Paging was added 2021-01-18 11:48:35 -05:00
Sukchan Lee 70a7bac6b2 feat: Add 5G Core Xn Handover (#726) 2021-01-03 00:50:59 -05:00
Sukchan Lee 235a041b8d feat: Add dedicated QoS flow 2020-12-31 21:07:08 -05:00
Sukchan Lee 198abc6e8b Add PCF(Policy Control Function) 2020-12-11 14:03:20 -05:00
Sukchan Lee 2c2b6dfcaf Use HTTP/2 instead of HTTP/1.1 in 5G Core SBI 2020-11-26 21:44:37 -05:00
Sukchan Lee 19b9360687 Split SGW into SGW-C/SGW-U 2020-08-12 20:31:22 -04:00
Sukchan Lee bcffdd823e Re-factoring 5GC for solving crash issue 2020-08-02 23:22:41 -04:00
Sukchan Lee 4d5b38c8f4 Fix the AMF crash [#521] 2020-07-30 22:10:20 -04:00
Sukchan Lee 2b2c51722f fix the 5GC test program 2020-07-29 23:26:12 -04:00
Sukchan Lee 661da4e034 5GC UPF selection is added 2020-07-19 21:42:58 -04:00
Sukchan Lee 9b3176ca4a QFI is added 2020-07-17 23:29:45 -04:00
Sukchan Lee a71d2ee3db refine SGW/UPF selection code 2020-07-09 01:38:09 -04:00
Sukchan Lee c7d87c9180 Fix the SMF crash bug [#487] 2020-07-03 23:14:48 -04:00
Sukchan Lee d9743286c5 Add PDU Session Release [#488] 2020-07-02 01:50:23 -04:00
Sukchan Lee c54e85c5c0 Session-AMBR changes required field in WebUI 2020-06-17 21:43:16 -04:00
Sukchan Lee dbee687a75 Add only one 5GC scenario (call-flow) 2020-06-17 01:22:28 -04:00