netfilter: flowtable: add a 'default' case to flowtable datapath
Add a 'default' case in case return a uninitialized value of ret, this should not ever happen since the follow transmit path types: - FLOW_OFFLOAD_XMIT_UNSPEC - FLOW_OFFLOAD_XMIT_TC are never observed from this path. Add this check for safety reasons. Signed-off-by: Li Qiong <liqiong@nfschina.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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@ -421,6 +421,10 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb,
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if (ret == NF_DROP)
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flow_offload_teardown(flow);
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break;
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default:
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WARN_ON_ONCE(1);
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ret = NF_DROP;
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break;
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}
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return ret;
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@ -682,6 +686,10 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb,
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if (ret == NF_DROP)
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flow_offload_teardown(flow);
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break;
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default:
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WARN_ON_ONCE(1);
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ret = NF_DROP;
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break;
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}
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return ret;
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