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authorPablo Neira Ayuso <pablo@netfilter.org>2019-12-06 22:49:58 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2019-12-09 13:14:05 +0100
commit81ec61074bcf68acfcb2820cda3ff9d9984419c7 (patch)
treee60fc2f886d1f4944449f2c1f8dff19e1f0c985f /net
parentfd57d0cbe187e93f63777d36e9f49293311d417f (diff)
netfilter: nf_tables_offload: return EOPNOTSUPP if rule specifies no actions
If the rule only specifies the matching side, return EOPNOTSUPP. Otherwise, the front-end relies on the drivers to reject this rule. Fixes: c9626a2cbdb2 ("netfilter: nf_tables: add hardware offload support") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nf_tables_offload.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/netfilter/nf_tables_offload.c b/net/netfilter/nf_tables_offload.c
index d7a35da008ef..22fb18906ccf 100644
--- a/net/netfilter/nf_tables_offload.c
+++ b/net/netfilter/nf_tables_offload.c
@@ -44,6 +44,9 @@ struct nft_flow_rule *nft_flow_rule_create(struct net *net,
expr = nft_expr_next(expr);
}
+ if (num_actions == 0)
+ return ERR_PTR(-EOPNOTSUPP);
+
flow = nft_flow_rule_alloc(num_actions);
if (!flow)
return ERR_PTR(-ENOMEM);