** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Groovy)
Importance: Undecided
Status: Incomplete
** Changed in: linux (Ubuntu Focal)
Status: New => Confirmed
** Changed in: linux (Ubuntu Groovy)
Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)
** Changed in: linux (Ubuntu Focal)
Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)
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https://bugs.launchpad.net/bugs/1896504
Title:
tc/ebpf: unable to use BPF_FUNC_skb_change_head
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
Confirmed
Status in linux source package in Groovy:
Incomplete
Bug description:
[Impact]
tc ebpf program that uses BPF_FUNC_skb_change_head are rejected.
This helper exists since linux v4.10, but it cannot be used until the the
upstream commit 6f3f65d80dac ("net: bpf: Allow TC programs to call
BPF_FUNC_skb_change_head"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6f3f65d80dac
[Test Case]
Create a, ebpf program that uses this helper and load it with tc.
[Regression Potential]
The patch is trivial, the potential regressions are low.
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