mirror of
https://gitea.osmocom.org/cellular-infrastructure/osmo-upf.git
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ladder charts
Related: SYS#5599 Change-Id: Ie8c1b1fa50cd4f1569f0fcb02d42c713e6e49cad
This commit is contained in:
Neels Hofmeyr
@@ -19,6 +19,10 @@ $(builddir)/%.png: $(srcdir)/%.msc
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$(builddir)/%.png: $(srcdir)/%.dot
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dot -Tpng $< > $@
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$(srcdir)/%.msc: $(srcdir)/%.ladder
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@which ladder_to_msc.py || (echo 'PLEASE POINT YOUR $$PATH AT libosmocore/contrib/ladder_to_msc.py' && false)
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ladder_to_msc.py -i $< -o $@
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.PHONY: poll
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poll:
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while true; do $(MAKE) msc dot; sleep 1; done
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73
doc/charts/pfcp_msgs.ladder
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73
doc/charts/pfcp_msgs.ladder
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@@ -0,0 +1,73 @@
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{hscale=1}
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upf = User Plane function
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cpf = Control Plane function
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cpf () . Look up UPF,
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pick any one of the available
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IP addrs for the UPF
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...
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upf <> cpf not yet associated
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upf () cpf reject any session related msgs
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...
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upf < cpf PFCP Association Setup Request
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CP function Node Id, features
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upf > cpf PFCP Association Setup Response
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UP function Node Id, features
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upf <> cpf associated
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upf () cpf start Heartbeat checking
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...
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upf < cpf Heartbeat Request
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upf > cpf Heartbeat Response
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...
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upf > cpf Heartbeat Request
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upf < cpf Heartbeat Response
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...
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upf < cpf Session Establishment Request
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CP Node-Id
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CP F-SEID
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1+ Packet Detection Rule(s)
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1+ Forward Action Rule(s)
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upf > cpf Session Establishment Response
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upf < cpf Session Modification Request
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upf > cpf Session Modification Response
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upf < cpf Session Deletion Request
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upf > cpf Session Deletion Response
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...
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upf () cpf F-SEID: accept any other IP addrs than peer's Node Id
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...
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--- Graceful release initiated by CP
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upf < cpf Association Update Request
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with PFCP Association Release Preparation Start = 1
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upf > cpf Association Update Response
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upf > cpf Session Report Request
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to report non-zero usage reports,
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at least one message per PFCP Session
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upf < cpf Association Release Request
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upf > cpf Association Release Response
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--- Graceful release initiated by UP
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upf > cpf Association Update Request
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with PFCP Association Release Preparation = 1
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cpf <> . refrain from establishing sessions
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upf < cpf Association Update Response
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upf < cpf Session Deletion Request(s)
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to collect usage reports
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per session
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upf > cpf Session Deletion Response(s)
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cpf () . wait Graceful Release Period
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upf < cpf Association Release Request
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upf > cpf Association Release Response
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--- Release (immediate)
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upf < cpf Association Release Request
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upf > cpf Association Release Response
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142
doc/charts/pfcp_msgs_gtp.ladder
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142
doc/charts/pfcp_msgs_gtp.ladder
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@@ -0,0 +1,142 @@
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{hscale=1}
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sgsn = SGSN
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123.44.0.9
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sgwc = SGW-C
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123.44.0.5
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sgwu = SGW-U
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123.44.0.6
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pgwc = PGW-C
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123.44.0.7
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pgwu = PGW-U
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123.44.0.8
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sgsn <-> sgwc S4-C GTPv2-C
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sgwc <-> sgwu Sxa PFCP
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sgsn <-> sgwu S4-U GTPv1-U
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sgwc <-> pgwc S5-C GTPv2-C
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pgwc <-> pgwu Sxb PFCP
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sgwu <-> pgwu S5-U GTPv1-U
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...
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sgsn -> sgwc GTP Create Session Request
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sgsn [] sgwc F-TEID S11 = 123.44.0.9,0x004
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F-TEID S5 = 123.44.0.7,0x000
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PDN addr alloc = IPv4 192.168.100.2
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sgwc -> sgwu PFCP Session Establishment Request
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sgwc [] sgwu 2x Create PDR
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F-TEID = CHOOSE
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FAR = NOCP,BUFF
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sgwc <- sgwu PFCP Session Establishment Response
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sgwc [] sgwu Created PDR F-TEID 123.44.0.6,0x015
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Created PDR F-TEID 123.44.0.6,0x016
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sgwc -> pgwc GTP Create Session Request
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sgwc [] pgwc F-TEID S5 = 123.44.0.5,0x00b
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PDN addr alloc = IPv4 192.168.100.2
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Bearer Ctx: F-TEID S5 = 123.44.0.6,0x015
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pgwc -> pgwu PFCP Session Establishment Request
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pgwc [] pgwu Create PDR 1:
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PDI: src-iface Core, UE IPv4 192.168.100.2
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FAR-1: FORW, dst-iface Access,
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hdr creation: GTP-U 123.44.0.6,0x015
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Create PDR 2:
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PDI: src-iface Access, F-TEID = CHOOSE id:05
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hdr removal: GTP-U
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FAR-2: FORW, dst-iface Core
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Create PDR 3:
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PDI: src-iface CP-function, F-TEID = CHOOSE
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hdr removal: GTP-U
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FAR-1
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Create PDR 4:
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PDI: src-iface Access, F-TEID = CHOOSE id:05, SDF Filter
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hdr removal: GTP-U
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FAR-3: FORW, dst-iface CP-Function,
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hdr creation: GTP-U 123.44.0.7,0x00b
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pgwc <- pgwu PFCP Session Establishment Response
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pgwc [] pgwu Created PDR-1
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Created PDR-2: F-TEID = 123.44.0.8,0x01e
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Created PDR-3: F-TEID = 123.44.0.8,0x01f
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Created PDR-4: F-TEID = 123.44.0.8,0x01e
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sgwc <- pgwc GTP Create Session Response
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sgwc [] pgwc TEID: 0x00b
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F-TEID: 123.44.0.7,0x00b
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PDN Addr: 192.168.100.2
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Bearer Ctx: F-TEID S5 123.44.0.8,0x01e
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sgwc -> sgwu PFCP Session Modification Request
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sgwc [] sgwu Update FAR-2: FORW, dst-iface Core,
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hdr creation GTP-U 123.44.0.8,0x01e
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sgwc <- sgwu PFCP Session Modification Response
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sgsn <- sgwc GTP Create Session Response
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sgsn [] sgwc TEID: 0x004
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F-TEID S11/S4: 123.44.0.5,0x007
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F-TEID S5/S8: 123.44.0.7,0x00b
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PDN Addr: 192.168.100.2
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Bearer Ctx:
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F-TEID S1-U: 123.44.0.6,0x016
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F-TEID S5/S8: 123.44.0.8,0x01e
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sgsn -> sgwc GTP Modify Bearer Request
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sgsn [] sgwc TEID: 0x007
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Bearer Ctx:
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F-TEID S1-U: 192.168.104.167,0x32adb2ad
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sgwc -> sgwu PFCP Session Modification Request
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sgwc [] sgwu Update FAR-1: FORW, dst-iface Access,
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hdr creation: GTP-U 192.168.104.167,0x32adb2ad
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sgwc <- sgwu PFCP Session Modification Response
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sgsn <- sgwc GTP Modify Bearer Response
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sgsn [] sgwc TEID: 0x004
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Bearer Ctx:
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F-TEID S1-U: 192.168.104.167,0x32adb2ad
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