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 18 struct 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 void *(*twsk_getpeer)(struct sock *sk); 26 }; 27 twsk_unique(struct sock * sk,struct sock * sktw,void * twp)28static inline int twsk_unique(struct sock *sk, struct sock *sktw, void *twp) 29 { 30 if (sk->sk_prot->twsk_prot->twsk_unique != NULL) 31 return sk->sk_prot->twsk_prot->twsk_unique(sk, sktw, twp); 32 return 0; 33 } 34 twsk_destructor(struct sock * sk)35static inline void twsk_destructor(struct sock *sk) 36 { 37 BUG_ON(sk == NULL); 38 BUG_ON(sk->sk_prot == NULL); 39 BUG_ON(sk->sk_prot->twsk_prot == NULL); 40 if (sk->sk_prot->twsk_prot->twsk_destructor != NULL) 41 sk->sk_prot->twsk_prot->twsk_destructor(sk); 42 } 43 twsk_getpeer(struct sock * sk)44static inline void *twsk_getpeer(struct sock *sk) 45 { 46 if (sk->sk_prot->twsk_prot->twsk_getpeer) 47 return sk->sk_prot->twsk_prot->twsk_getpeer(sk); 48 return NULL; 49 } 50 51 #endif /* _TIMEWAIT_SOCK_H */ 52