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 17 struct 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 25 static 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 32 static 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