From 0fa1a53e1f055a6c790f40e7728f42a825b29248 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 13 Dec 2005 23:23:09 -0800 Subject: [IPV6]: Introduce inet6_timewait_sock Out of tcp6_timewait_sock, that now is just an aggregation of inet_timewait_sock and inet6_timewait_sock, using tw_ipv6_offset in struct inet_timewait_sock, that is common to the IPv6 transport protocols that use timewait sockets, like DCCP and TCP. tw_ipv6_offset plays the struct inet_sock pinfo6 role, i.e. for the generic code to find the IPv6 area in a timewait sock. Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- include/linux/ipv6.h | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) (limited to 'include/linux/ipv6.h') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 69a0decfbdf4..7d3908594fac 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -348,26 +348,36 @@ static inline void inet_sk_copy_descendant(struct sock *sk_to, #include +struct inet6_timewait_sock { + struct in6_addr tw_v6_daddr; + struct in6_addr tw_v6_rcv_saddr; +}; + struct tcp6_timewait_sock { - struct tcp_timewait_sock tw_v6_sk; - struct in6_addr tw_v6_daddr; - struct in6_addr tw_v6_rcv_saddr; + struct tcp_timewait_sock tcp6tw_tcp; + struct inet6_timewait_sock tcp6tw_inet6; }; -static inline struct tcp6_timewait_sock *tcp6_twsk(const struct sock *sk) +static inline u16 inet6_tw_offset(const struct proto *prot) +{ + return prot->twsk_obj_size - sizeof(struct inet6_timewait_sock); +} + +static inline struct inet6_timewait_sock *inet6_twsk(const struct sock *sk) { - return (struct tcp6_timewait_sock *)sk; + return (struct inet6_timewait_sock *)(((u8 *)sk) + + inet_twsk(sk)->tw_ipv6_offset); } -static inline struct in6_addr *__tcp_v6_rcv_saddr(const struct sock *sk) +static inline struct in6_addr *__inet6_rcv_saddr(const struct sock *sk) { return likely(sk->sk_state != TCP_TIME_WAIT) ? - &inet6_sk(sk)->rcv_saddr : &tcp6_twsk(sk)->tw_v6_rcv_saddr; + &inet6_sk(sk)->rcv_saddr : &inet6_twsk(sk)->tw_v6_rcv_saddr; } -static inline struct in6_addr *tcp_v6_rcv_saddr(const struct sock *sk) +static inline struct in6_addr *inet6_rcv_saddr(const struct sock *sk) { - return sk->sk_family == AF_INET6 ? __tcp_v6_rcv_saddr(sk) : NULL; + return sk->sk_family == AF_INET6 ? __inet6_rcv_saddr(sk) : NULL; } static inline int inet_v6_ipv6only(const struct sock *sk) @@ -395,8 +405,8 @@ static inline struct raw6_sock *raw6_sk(const struct sock *sk) return NULL; } -#define __tcp_v6_rcv_saddr(__sk) NULL -#define tcp_v6_rcv_saddr(__sk) NULL +#define __inet6_rcv_saddr(__sk) NULL +#define inet6_rcv_saddr(__sk) NULL #define tcp_twsk_ipv6only(__sk) 0 #define inet_v6_ipv6only(__sk) 0 #endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */ -- cgit v1.2.3