From: Liping Zhang <liping.zhang@spreadtrum.com>
Date: Wed, 19 Oct 2016 15:31:29 +0000 (+0800)
Subject: netfilter: nft_meta: permit pkttype mangling in ip/ip6 prerouting
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=96d9f2a72c719d985fdbae4e3d63ddc874947a7e;p=openwrt%2Fstaging%2Fblogic.git

netfilter: nft_meta: permit pkttype mangling in ip/ip6 prerouting

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

Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

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;
 	}