include/net/netfilter/nf_tproxy_core.h

   1 #ifndef _NF_TPROXY_CORE_H
   2 #define _NF_TPROXY_CORE_H
   3
   4 #include <linux/types.h>
   5 #include <linux/in.h>
   6 #include <linux/skbuff.h>
   7 #include <net/sock.h>
   8 #include <net/inet_sock.h>
   9 #include <net/tcp.h>
  10
  11 /* look up and get a reference to a matching socket */
  12 extern struct sock *
  13 nf_tproxy_get_sock_v4(struct net *net, const u8 protocol,
  14                       const __be32 saddr, const __be32 daddr,
  15                       const __be16 sport, const __be16 dport,
  16                       const struct net_device *in, bool listening);
  17
  18 static inline void
  19 nf_tproxy_put_sock(struct sock *sk)
  20 {
  21         /* TIME_WAIT inet sockets have to be handled differently */
  22         if ((sk->sk_protocol == IPPROTO_TCP) && (sk->sk_state == TCP_TIME_WAIT))
  23                 inet_twsk_put(inet_twsk(sk));
  24         else
  25                 sock_put(sk);
  26 }
  27
  28 /* assign a socket to the skb -- consumes sk */
  29 int
  30 nf_tproxy_assign_sock(struct sk_buff *skb, struct sock *sk);
  31
  32 #endif