Re: [PATCH net v6 1/2] flow_dissector: do not dissect PPPoE PFC frames

patchwork-bot+netdevbpf
2026-04-20T22:00:16Z

Hello:

This series was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Wed, 15 Apr 2026 10:24:50 +0800 you wrote:
> RFC 2516 Section 7 states that Protocol Field Compression (PFC) is NOT
> RECOMMENDED for PPPoE. In practice, pppd does not support negotiating
> PFC for PPPoE sessions, and the flow dissector driver has assumed an
> uncompressed frame until the blamed commit.
>
> During the review process of that commit [1], support for PFC is
> suggested. However, having a compressed (1-byte) protocol field means
> the subsequent PPP payload is shifted by one byte, causing 4-byte
> misalignment for the network header and an unaligned access exception
> on some architectures.
>
> [...]

Here is the summary with links:
- [net,v6,1/2] flow_dissector: do not dissect PPPoE PFC frames
https://git.kernel.org/netdev/net/c/d6c19b31a3c1
- [net,v6,2/2] pppoe: drop PFC frames
https://git.kernel.org/netdev/net/c/cc1ff87bce1c

You are awesome, thank you!
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