[PATCH 05/12] netfilter: nft_meta: permit pkttype mangling in ip/ip6 prerouting

[Pablo Neira Ayuso]

From: Liping Zhang <liping.zh...@spreadtrum.com>

After supporting this, we can combine it with hash expression to emulate
the 'cluster match'.

Suggested-by: Pablo Neira Ayuso <pa...@netfilter.org>
Signed-off-by: Liping Zhang <liping.zh...@spreadtrum.com>
Signed-off-by: Pablo Neira Ayuso <pa...@netfilter.org>
---
 net/netfilter/nft_meta.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index 6c1e0246706e..64994023bf81 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -310,6 +310,11 @@ int nft_meta_set_validate(const struct nft_ctx *ctx,
        case NFPROTO_NETDEV:
                hooks = 1 << NF_NETDEV_INGRESS;
                break;
+       case NFPROTO_IPV4:
+       case NFPROTO_IPV6:
+       case NFPROTO_INET:
+               hooks = 1 << NF_INET_PRE_ROUTING;
+               break;
        default:
                return -EOPNOTSUPP;
        }
-- 
2.1.4