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tcp: Remove tw->tw_peer 

No longer used.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-07-10 03:27:56 -07:00
parent 81166dd6fa
commit b6242b9b45
2 changed files with 2 additions and 15 deletions
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1
include/linux/tcp.h
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@ -506,7 +506,6 @@ struct tcp_timewait_sock {
u32 tw_rcv_wnd;
u32 tw_ts_recent;
long tw_ts_recent_stamp;
struct inet_peer *tw_peer;
#ifdef CONFIG_TCP_MD5SIG
struct tcp_md5sig_key *tw_md5_key;
#endif

16
net/ipv4/tcp_minisocks.c
View File

@ -267,12 +267,9 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
const struct inet_connection_sock *icsk = inet_csk(sk);
const struct tcp_sock *tp = tcp_sk(sk);
bool recycle_ok = false;
bool recycle_on = false;
if (tcp_death_row.sysctl_tw_recycle && tp->rx_opt.ts_recent_stamp) {
if (tcp_death_row.sysctl_tw_recycle && tp->rx_opt.ts_recent_stamp)
recycle_ok = tcp_remember_stamp(sk);
recycle_on = true;
}
if (tcp_death_row.tw_count < tcp_death_row.sysctl_max_tw_buckets)
tw = inet_twsk_alloc(sk, state);
@ -281,7 +278,6 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
struct tcp_timewait_sock *tcptw = tcp_twsk((struct sock *)tw);
const int rto = (icsk->icsk_rto << 2) - (icsk->icsk_rto >> 1);
struct inet_sock *inet = inet_sk(sk);
struct inet_peer *peer = NULL;
tw->tw_transparent = inet->transparent;
tw->tw_rcv_wscale = tp->rx_opt.rcv_wscale;
@ -305,12 +301,6 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
}
#endif
if (recycle_on)
peer = icsk->icsk_af_ops->get_peer(sk);
tcptw->tw_peer = peer;
if (peer)
atomic_inc(&peer->refcnt);
#ifdef CONFIG_TCP_MD5SIG
/*
* The timewait bucket does not have the key DB from the
@ -362,11 +352,9 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
void tcp_twsk_destructor(struct sock *sk)
{
#ifdef CONFIG_TCP_MD5SIG
struct tcp_timewait_sock *twsk = tcp_twsk(sk);
if (twsk->tw_peer)
inet_putpeer(twsk->tw_peer);
#ifdef CONFIG_TCP_MD5SIG
if (twsk->tw_md5_key) {
tcp_free_md5sig_pool();
kfree_rcu(twsk->tw_md5_key, rcu);