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timewait_sock: Create and use getpeer op.

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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>
This commit is contained in:
David S. Miller 2010-12-01 18:09:13 -08:00
parent 4399ce402c
commit ccb7c410dd
5 changed files with 63 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

26
net/ipv6/tcp_ipv6.c
View file

@ -906,12 +906,6 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
};
#endif
static struct timewait_sock_ops tcp6_timewait_sock_ops = {
.twsk_obj_size = sizeof(struct tcp6_timewait_sock),
.twsk_unique = tcp_twsk_unique,
.twsk_destructor= tcp_twsk_destructor,
};
static void __tcp_v6_send_check(struct sk_buff *skb,
struct in6_addr *saddr, struct in6_addr *daddr)
{
@ -1818,12 +1812,30 @@ do_time_wait:
goto discard_it;
}
struct inet_peer *tcp_v6_get_peer(struct sock *sk, bool *release_it)
static struct inet_peer *tcp_v6_get_peer(struct sock *sk, bool *release_it)
{
/* Alas, not yet... */
return NULL;
}
static void *tcp_v6_tw_get_peer(struct sock *sk)
{
struct inet_timewait_sock *tw = inet_twsk(sk);
if (tw->tw_family == AF_INET)
return tcp_v4_tw_get_peer(sk);
/* Alas, not yet... */
return NULL;
}
static struct timewait_sock_ops tcp6_timewait_sock_ops = {
.twsk_obj_size = sizeof(struct tcp6_timewait_sock),
.twsk_unique = tcp_twsk_unique,
.twsk_destructor= tcp_twsk_destructor,
.twsk_getpeer = tcp_v6_tw_get_peer,
};
static const struct inet_connection_sock_af_ops ipv6_specific = {
.queue_xmit = inet6_csk_xmit,
.send_check = tcp_v6_send_check,