From: Fernando Fernandez Mancera <ffmancera@xxxxxxxxxx>
The nft_osf extension, like xt_osf, is not supported from the output
path.
Fixes: b96af92d6eaf ("netfilter: nf_tables: implement Passive OS fingerprint module in nft_osf")
Signed-off-by: Fernando Fernandez Mancera <ffmancera@xxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
net/netfilter/nft_osf.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/net/netfilter/nft_osf.c b/net/netfilter/nft_osf.c
index a35fb59ace73..df4e3e0412ed 100644
--- a/net/netfilter/nft_osf.c
+++ b/net/netfilter/nft_osf.c
@@ -69,6 +69,15 @@ static int nft_osf_dump(struct sk_buff *skb, const struct nft_expr *expr)
return -1;
}
+static int nft_osf_validate(const struct nft_ctx *ctx,
+ const struct nft_expr *expr,
+ const struct nft_data **data)
+{
+ return nft_chain_validate_hooks(ctx->chain, (1 << NF_INET_LOCAL_IN) |
+ (1 << NF_INET_PRE_ROUTING) |
+ (1 << NF_INET_FORWARD));
+}
+
static struct nft_expr_type nft_osf_type;
static const struct nft_expr_ops nft_osf_op = {
.eval = nft_osf_eval,
@@ -76,6 +85,7 @@ static const struct nft_expr_ops nft_osf_op = {
.init = nft_osf_init,
.dump = nft_osf_dump,
.type = &nft_osf_type,
+ .validate = nft_osf_validate,
};
static struct nft_expr_type nft_osf_type __read_mostly = {
--
2.11.0
