netdev - Re: [PATCH v14 nf-next 3/3] netfilter: nft_chain_filter: Add bridge double vlan and pppoe

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Message-ID: <aG2Vfqd779sIK1eL@strlen.de>
Date: Wed, 9 Jul 2025 00:02:38 +0200
From: Florian Westphal <fw@...len.de>
To: Eric Woudstra <ericwouds@...il.com>
Cc: Pablo Neira Ayuso <pablo@...filter.org>,
	Jozsef Kadlecsik <kadlec@...filter.org>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Ido Schimmel <idosch@...dia.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>, netfilter-devel@...r.kernel.org,
	bridge@...ts.linux.dev, netdev@...r.kernel.org
Subject: Re: [PATCH v14 nf-next 3/3] netfilter: nft_chain_filter: Add bridge
 double vlan and pppoe

Eric Woudstra <ericwouds@...il.com> wrote:
> +		if (!pskb_may_pull(skb, VLAN_HLEN))
> +			break;
> +		vhdr = (struct vlan_hdr *)(skb->data);
> +		offset = VLAN_HLEN;
> +		outer_proto = skb->protocol;
> +		proto = vhdr->h_vlan_encapsulated_proto;
> +		skb_set_network_header(skb, offset);
> +		skb->protocol = proto;

Why is skb->protocol munged?  Also applies to the previous patch,
I forgot to ask.