** Also affects: linux-bluefield (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux-bluefield (Ubuntu Focal)
Importance: Undecided => Medium
** Changed in: linux-bluefield (Ubuntu Focal)
Status: New => In Progress
** Changed in: linux-bluefield (Ubuntu Focal)
Assignee: (unassigned) => Bodong Wang (bodong-wang)
** Changed in: linux-bluefield (Ubuntu)
Status: New => Invalid
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Packages, which is subscribed to linux-bluefield in Ubuntu.
https://bugs.launchpad.net/bugs/1940448
Title:
CT state not reset when packet redirected to different port
Status in linux-bluefield package in Ubuntu:
Invalid
Status in linux-bluefield source package in Focal:
In Progress
Bug description:
* Explain the bug(s)
CT state not reset when packet redirected to different port, thus
making it possible to match rules with wrong ct state on the other port.
* brief explanation of fixes
Reset ct state when redirecting to a different port.
The sauce fix being reverted and should apply the upstream fix to catch all
cases correctly.
* How to test
tc qdisc add dev veth0 clsact
# The same with "action mirred egress mirror dev veth1" or "action mirred
ingress redirect dev veth1"
tc filter add dev veth0 egress chain 1 protocol ip flower ct_state +trk
action mirred ingress mirror dev veth1
tc filter add dev veth0 egress chain 0 protocol ip flower ct_state -inv
action ct commit action goto chain 1
tc qdisc add dev veth1 clsact
tc filter add dev veth1 ingress chain 0 protocol ip flower ct_state +trk
action drop
ping <remove ip via veth0> &
tc -s filter show dev veth1 ingress
With command 'tc -s filter show', we can find the pkts were dropped on veth1.
* What it could break.
Wrong matching. Traffic failure when redirecting to different ports and there
are more
rules to match on the other port.
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