[Bug 1744] Packet corruption occurs when using the nftables vlan pcp set command

[bugzilla-daemon at netfilter.org]

https://bugzilla.netfilter.org/show_bug.cgi?id=1744

--- Comment #4 from Yungan Wang <yungan.wang at broadcom.com> ---
(In reply to Phil Sutter from comment #2)
> Hi,
> 
> (In reply to Yungan Wang from comment #1)
> > Hi netfilter team,
> > 
> > I was hoping you could assist in clarifying whether the issue I'm
> > encountering is a bug or not.
> 
> It clearly is a bug, but the question is whether it has been fixed already
> or not. I see several fixes in respective kernel code in near past, could
> you please try to reproduce using a more recent (v6.2 at least) kernel?
> 
> Cheers, Phil

Hi Phil,

I took a look at the latest version of the kernel's net/netfilter/nft_payload.c
file:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/net/netfilter/nft_payload.c?h=v6.9-rc6

It seems that nft_payload_set_eval() still doesn't handle skb->vlan_tci.
Therefore, I believe this issue may still occur in the latest kernel version.

Cheers,
Yungan

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