[PATCH nf] netfilter: nft_fwd: really validate family

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This only supports for the netdev family, report EOPNOTSUPP otherwise.

Fixes: 76a109fac206 ("netfilter: nft_fwd_netdev: validate family and chain type")
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
 net/netfilter/nft_fwd_netdev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/netfilter/nft_fwd_netdev.c b/net/netfilter/nft_fwd_netdev.c
index 7c5876dc9ff2..138313123da6 100644
--- a/net/netfilter/nft_fwd_netdev.c
+++ b/net/netfilter/nft_fwd_netdev.c
@@ -205,6 +205,9 @@ static int nft_fwd_validate(const struct nft_ctx *ctx,
 			    const struct nft_expr *expr,
 			    const struct nft_data **data)
 {
+	if (ctx->family != NFPROTO_NETDEV)
+		return -EOPNOTSUPP;
+
 	return nft_chain_validate_hooks(ctx->chain, (1 << NF_NETDEV_INGRESS) |
 						    (1 << NF_NETDEV_EGRESS));
 }
-- 
2.30.2




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