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ccb7c410dd
The only thing AF-specific about remembering the timestamp for a time-wait TCP socket is getting the peer. Abstract that behind a new timewait_sock_ops vector. Support for real IPV6 sockets is not filled in yet, but curiously this makes timewait recycling start to work for v4-mapped ipv6 sockets. Signed-off-by: David S. Miller <davem@davemloft.net>
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
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* NET Generic infrastructure for Network protocols.
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*
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* Authors: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _TIMEWAIT_SOCK_H
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#define _TIMEWAIT_SOCK_H
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#include <linux/slab.h>
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#include <net/sock.h>
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struct timewait_sock_ops {
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struct kmem_cache *twsk_slab;
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char *twsk_slab_name;
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unsigned int twsk_obj_size;
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int (*twsk_unique)(struct sock *sk,
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struct sock *sktw, void *twp);
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void (*twsk_destructor)(struct sock *sk);
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void *(*twsk_getpeer)(struct sock *sk);
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};
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static inline int twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
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{
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if (sk->sk_prot->twsk_prot->twsk_unique != NULL)
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return sk->sk_prot->twsk_prot->twsk_unique(sk, sktw, twp);
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return 0;
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}
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static inline void twsk_destructor(struct sock *sk)
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{
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BUG_ON(sk == NULL);
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BUG_ON(sk->sk_prot == NULL);
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BUG_ON(sk->sk_prot->twsk_prot == NULL);
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if (sk->sk_prot->twsk_prot->twsk_destructor != NULL)
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sk->sk_prot->twsk_prot->twsk_destructor(sk);
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}
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static inline void *twsk_getpeer(struct sock *sk)
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{
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if (sk->sk_prot->twsk_prot->twsk_getpeer)
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return sk->sk_prot->twsk_prot->twsk_getpeer(sk);
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return NULL;
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}
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#endif /* _TIMEWAIT_SOCK_H */
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