linux/include/net/timewait_sock.h
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   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 <linux/bug.h>
  16#include <net/sock.h>
  17
  18struct timewait_sock_ops {
  19        struct kmem_cache       *twsk_slab;
  20        char            *twsk_slab_name;
  21        unsigned int    twsk_obj_size;
  22        int             (*twsk_unique)(struct sock *sk,
  23                                       struct sock *sktw, void *twp);
  24        void            (*twsk_destructor)(struct sock *sk);
  25};
  26
  27static inline int twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
  28{
  29        if (sk->sk_prot->twsk_prot->twsk_unique != NULL)
  30                return sk->sk_prot->twsk_prot->twsk_unique(sk, sktw, twp);
  31        return 0;
  32}
  33
  34static inline void twsk_destructor(struct sock *sk)
  35{
  36        BUG_ON(sk == NULL);
  37        BUG_ON(sk->sk_prot == NULL);
  38        BUG_ON(sk->sk_prot->twsk_prot == NULL);
  39        if (sk->sk_prot->twsk_prot->twsk_destructor != NULL)
  40                sk->sk_prot->twsk_prot->twsk_destructor(sk);
  41}
  42
  43#endif /* _TIMEWAIT_SOCK_H */
  44
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