diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 10 | ||||
| -rw-r--r-- | net/ipv4/tcp_minisocks.c | 27 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 13 |
3 files changed, 20 insertions, 30 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 77f049d00dbb..fda2ca17135e 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1835,20 +1835,10 @@ struct inet_peer *tcp_v4_get_peer(struct sock *sk) } EXPORT_SYMBOL(tcp_v4_get_peer); -void *tcp_v4_tw_get_peer(struct sock *sk) -{ - const struct inet_timewait_sock *tw = inet_twsk(sk); - struct net *net = sock_net(sk); - - return inet_getpeer_v4(net, tw->tw_daddr, 1); -} -EXPORT_SYMBOL(tcp_v4_tw_get_peer); - static struct timewait_sock_ops tcp_timewait_sock_ops = { .twsk_obj_size = sizeof(struct tcp_timewait_sock), .twsk_unique = tcp_twsk_unique, .twsk_destructor= tcp_twsk_destructor, - .twsk_getpeer = tcp_v4_tw_get_peer, }; const struct inet_connection_sock_af_ops ipv4_specific = { diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index fef9dbf3af00..cb015317c9f7 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -77,20 +77,19 @@ static bool tcp_remember_stamp(struct sock *sk) static bool tcp_tw_remember_stamp(struct inet_timewait_sock *tw) { + const struct tcp_timewait_sock *tcptw; struct sock *sk = (struct sock *) tw; struct inet_peer *peer; - peer = twsk_getpeer(sk); + tcptw = tcp_twsk(sk); + peer = tcptw->tw_peer; if (peer) { - const struct tcp_timewait_sock *tcptw = tcp_twsk(sk); - if ((s32)(peer->tcp_ts - tcptw->tw_ts_recent) <= 0 || ((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL && peer->tcp_ts_stamp <= (u32)tcptw->tw_ts_recent_stamp)) { peer->tcp_ts_stamp = (u32)tcptw->tw_ts_recent_stamp; peer->tcp_ts = tcptw->tw_ts_recent; } - inet_putpeer(peer); return true; } return false; @@ -314,9 +313,12 @@ 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); @@ -324,8 +326,10 @@ void tcp_time_wait(struct sock *sk, int state, int timeo) if (tw != NULL) { 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_sk(sk)->transparent; + tw->tw_transparent = inet->transparent; tw->tw_rcv_wscale = tp->rx_opt.rcv_wscale; tcptw->tw_rcv_nxt = tp->rcv_nxt; tcptw->tw_snd_nxt = tp->snd_nxt; @@ -347,6 +351,12 @@ 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 @@ -398,8 +408,11 @@ 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); diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index b5ecf37b61a6..f91b0bfd12d5 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1746,23 +1746,10 @@ static struct inet_peer *tcp_v6_get_peer(struct sock *sk) return rt6_get_peer_create(rt); } -static void *tcp_v6_tw_get_peer(struct sock *sk) -{ - const struct inet6_timewait_sock *tw6 = inet6_twsk(sk); - const struct inet_timewait_sock *tw = inet_twsk(sk); - struct net *net = sock_net(sk); - - if (tw->tw_family == AF_INET) - return tcp_v4_tw_get_peer(sk); - - return inet_getpeer_v6(net, &tw6->tw_v6_daddr, 1); -} - 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 = { |