void tcp_v4_early_demux(struct sk_buff *skb)
{
- struct net *net = dev_net(skb->dev);
const struct iphdr *iph;
const struct tcphdr *th;
struct sock *sk;
if (skb->pkt_type != PACKET_HOST)
return;
- if (!pskb_may_pull(skb, ip_hdrlen(skb) + sizeof(struct tcphdr)))
+ if (!pskb_may_pull(skb, skb_transport_offset(skb) + sizeof(struct tcphdr)))
return;
iph = ip_hdr(skb);
- th = (struct tcphdr *) ((char *)iph + ip_hdrlen(skb));
+ th = tcp_hdr(skb);
if (th->doff < sizeof(struct tcphdr) / 4)
return;
- sk = __inet_lookup_established(net, &tcp_hashinfo,
+ sk = __inet_lookup_established(dev_net(skb->dev), &tcp_hashinfo,
iph->saddr, th->source,
iph->daddr, ntohs(th->dest),
skb->skb_iif);