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netfilter: nf_tables_offload: return EOPNOTSUPP if rule specifies no actions
[ Upstream commit81ec61074b
] If the rule only specifies the matching side, return EOPNOTSUPP. Otherwise, the front-end relies on the drivers to reject this rule. Fixes:c9626a2cbd
("netfilter: nf_tables: add hardware offload support") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -44,6 +44,9 @@ struct nft_flow_rule *nft_flow_rule_create(struct net *net,
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expr = nft_expr_next(expr);
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}
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if (num_actions == 0)
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return ERR_PTR(-EOPNOTSUPP);
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flow = nft_flow_rule_alloc(num_actions);
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if (!flow)
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return ERR_PTR(-ENOMEM);
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