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@@ -302,6 +302,17 @@ static struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr,
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return result;
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}
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+static inline struct sock *__udp4_lib_lookup_skb(struct sk_buff *skb,
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+ __be16 sport, __be16 dport,
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+ struct hlist_head udptable[])
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+{
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+ const struct iphdr *iph = ip_hdr(skb);
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+
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+ return __udp4_lib_lookup(dev_net(skb->dst->dev), iph->saddr, sport,
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+ iph->daddr, dport, inet_iif(skb),
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+ udptable);
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+}
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+
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struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
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__be32 daddr, __be16 dport, int dif)
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{
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@@ -1208,8 +1219,7 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
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return __udp4_lib_mcast_deliver(net, skb, uh,
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saddr, daddr, udptable);
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- sk = __udp4_lib_lookup(net, saddr, uh->source, daddr,
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- uh->dest, inet_iif(skb), udptable);
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+ sk = __udp4_lib_lookup_skb(skb, uh->source, uh->dest, udptable);
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if (sk != NULL) {
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int ret = udp_queue_rcv_skb(sk, skb);
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