ci: enhance validation steps for Ethernet PDU sessions - #11
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…multicast handling Signed-off-by: Tariro Mukute <tariro.mukute@phine.tech>
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CI Build: #173 | Failed on the following stages: |
-f is a per-interface option: placed after an -i it filters only the
interface named by that last -i, and it sets the default filter for all
interfaces only when it precedes the first -i. From the tshark(1) man
page, on -f:
"If used before the first occurrence of the -i option, it sets the
default capture filter expression. If used after an -i option, it
sets the capture filter expression for the interface specified by
the last -i option occurring before this option."
demo-oai was therefore captured unfiltered on the multi-interface
deployments, recording the rfsim IQ stream into a 63 GB PCAP. port 2152
and arp are added because demo-n3 and demo-n6 previously got that
traffic only by being unfiltered.
Signed-off-by: Shubhika Garg <shubhika.garg@openairinterface.org>
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docs/Ethernet_PDU_Sessions.mdcurrently validates the feature with a singlearping.ARP is answered locally by the UPF and never enters the GTP-U tunnel —
tcpdump -i demo-n3shows zero GTP-U packets during anarpingrun. A build in which the Ethernet PDU user plane is completely non-functional passes the existing test.Related to: openairinterface/oai-cn5g-upf#16
The tests below were written while debugging several Ethernet-PDU datapath issues; each one corresponds to a failure mode that the current document does not detect.
What changes
multicast_snooping=1with no querier, so unregistered L2 multicast is never forwarded to ports — gPTP and similar fail silently while ARP appears to workarping, since any uplink teaches the UPF the UE's MAC and the test then passes for the wrong reason