Needed by multi-family tables to distinguish IPv4 and IPv6 packets.
Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
---
include/uapi/linux/netfilter/nf_tables.h | 2 ++
net/netfilter/nft_meta.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index fbfd229..7ec92a9 100644
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -529,6 +529,7 @@ enum nft_exthdr_attributes {
* @NFT_META_NFTRACE: packet nftrace bit
* @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
* @NFT_META_SECMARK: packet secmark (skb->secmark)
+ * @NFT_META_NFPROTO: netfilter protocol
*/
enum nft_meta_keys {
NFT_META_LEN,
@@ -546,6 +547,7 @@ enum nft_meta_keys {
NFT_META_NFTRACE,
NFT_META_RTCLASSID,
NFT_META_SECMARK,
+ NFT_META_NFPROTO,
};
/**
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index 8c28220..06a4f30 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -40,6 +40,9 @@ static void nft_meta_eval(const struct nft_expr *expr,
case NFT_META_PROTOCOL:
*(__be16 *)dest->data = skb->protocol;
break;
+ case NFT_META_NFPROTO:
+ dest->data[0] = pkt->ops->pf;
+ break;
case NFT_META_PRIORITY:
dest->data[0] = skb->priority;
break;
@@ -151,6 +154,7 @@ static int nft_meta_init(const struct nft_ctx *ctx, const struct nft_expr *expr,
switch (priv->key) {
case NFT_META_LEN:
case NFT_META_PROTOCOL:
+ case NFT_META_NFPROTO:
case NFT_META_PRIORITY:
case NFT_META_MARK:
case NFT_META_IIF:
--
1.8.4.2
--
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