LXR linux/include/net/timewait

   1/*
   2 * NET          Generic infrastructure for Network protocols.
   3 *
   4 * Authors:     Arnaldo Carvalho de Melo <acme@conectiva.com.br>
   5 *
   6 *              This program is free software; you can redistribute it and/or
   7 *              modify it under the terms of the GNU General Public License
   8 *              as published by the Free Software Foundation; either version
   9 *              2 of the License, or (at your option) any later version.
  10 */
  11#ifndef _TIMEWAIT_SOCK_H
  12#define _TIMEWAIT_SOCK_H
  13
  14#include <linux/slab.h>
  15#include <net/sock.h>
  16
  17struct timewait_sock_ops {
  18        struct kmem_cache       *twsk_slab;
  19        unsigned int    twsk_obj_size;
  20        int             (*twsk_unique)(struct sock *sk,
  21                                       struct sock *sktw, void *twp);
  22        void            (*twsk_destructor)(struct sock *sk);
  23};
  24
  25static inline int twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
  26{
  27        if (sk->sk_prot->twsk_prot->twsk_unique != NULL)
  28                return sk->sk_prot->twsk_prot->twsk_unique(sk, sktw, twp);
  29        return 0;
  30}
  31
  32static inline void twsk_destructor(struct sock *sk)
  33{
  34        BUG_ON(sk == NULL);
  35        BUG_ON(sk->sk_prot == NULL);
  36        BUG_ON(sk->sk_prot->twsk_prot == NULL);
  37        if (sk->sk_prot->twsk_prot->twsk_destructor != NULL)
  38                sk->sk_prot->twsk_prot->twsk_destructor(sk);
  39}
  40
  41#endif /* _TIMEWAIT_SOCK_H */
  42