From 56fa95014a0447f798444e626091cbeb3176af24 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Mon, 25 Oct 2021 15:43:29 +0200 Subject: netfilter: nft_meta: add NFT_META_IFTYPE Generalize NFT_META_IIFTYPE to NFT_META_IFTYPE which allows you to match on the interface type of the skb->dev field. This field is used by the netdev family to add an implicit dependency to skip non-ethernet packets when matching on layer 3 and 4 TCP/IP header fields. For backward compatibility, add the NFT_META_IIFTYPE alias to NFT_META_IFTYPE. Add __NFT_META_IIFTYPE, to be used by userspace in the future to match specifically on the iiftype. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nft_meta.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'net/netfilter') diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c index a7e01e9952f1..516e74635bae 100644 --- a/net/netfilter/nft_meta.c +++ b/net/netfilter/nft_meta.c @@ -244,7 +244,11 @@ static bool nft_meta_get_eval_ifname(enum nft_meta_keys key, u32 *dest, case NFT_META_OIF: nft_meta_store_ifindex(dest, nft_out(pkt)); break; - case NFT_META_IIFTYPE: + case NFT_META_IFTYPE: + if (!nft_meta_store_iftype(dest, pkt->skb->dev)) + return false; + break; + case __NFT_META_IIFTYPE: if (!nft_meta_store_iftype(dest, nft_in(pkt))) return false; break; -- cgit v1.2.3