*
* Implementation of the Transmission Control Protocol(TCP).
*
- * Version: $Id: tcp_timer.c,v 1.88 2002/02/01 22:01:04 davem Exp $
- *
* Authors: Ross Biro
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* Mark Evans, <evansmp@uhura.aston.ac.uk>
sk->sk_error_report(sk);
tcp_done(sk);
- NET_INC_STATS_BH(LINUX_MIB_TCPABORTONTIMEOUT);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONTIMEOUT);
}
/* Do not allow orphaned sockets to eat all our resources.
static int tcp_out_of_resources(struct sock *sk, int do_reset)
{
struct tcp_sock *tp = tcp_sk(sk);
- int orphans = atomic_read(&tcp_orphan_count);
+ int orphans = percpu_counter_read_positive(&tcp_orphan_count);
/* If peer does not open window for long time, or did not transmit
* anything for long time, penalize it. */
if (do_reset)
tcp_send_active_reset(sk, GFP_ATOMIC);
tcp_done(sk);
- NET_INC_STATS_BH(LINUX_MIB_TCPABORTONMEMORY);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONMEMORY);
return 1;
}
return 0;
static void tcp_delack_timer(unsigned long data)
{
- struct sock *sk = (struct sock*)data;
+ struct sock *sk = (struct sock *)data;
struct tcp_sock *tp = tcp_sk(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
if (sock_owned_by_user(sk)) {
/* Try again later. */
icsk->icsk_ack.blocked = 1;
- NET_INC_STATS_BH(LINUX_MIB_DELAYEDACKLOCKED);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_DELAYEDACKLOCKED);
sk_reset_timer(sk, &icsk->icsk_delack_timer, jiffies + TCP_DELACK_MIN);
goto out_unlock;
}
- sk_stream_mem_reclaim(sk);
+ sk_mem_reclaim_partial(sk);
if (sk->sk_state == TCP_CLOSE || !(icsk->icsk_ack.pending & ICSK_ACK_TIMER))
goto out;
if (!skb_queue_empty(&tp->ucopy.prequeue)) {
struct sk_buff *skb;
- NET_INC_STATS_BH(LINUX_MIB_TCPSCHEDULERFAILED);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSCHEDULERFAILED);
while ((skb = __skb_dequeue(&tp->ucopy.prequeue)) != NULL)
- sk->sk_backlog_rcv(sk, skb);
+ sk_backlog_rcv(sk, skb);
tp->ucopy.memory = 0;
}
icsk->icsk_ack.ato = TCP_ATO_MIN;
}
tcp_send_ack(sk);
- NET_INC_STATS_BH(LINUX_MIB_DELAYEDACKS);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_DELAYEDACKS);
}
TCP_CHECK_TIMER(sk);
out:
if (tcp_memory_pressure)
- sk_stream_mem_reclaim(sk);
+ sk_mem_reclaim(sk);
out_unlock:
bh_unlock_sock(sk);
sock_put(sk);
if (!tp->packets_out)
goto out;
- BUG_TRAP(!tcp_write_queue_empty(sk));
+ WARN_ON(tcp_write_queue_empty(sk));
if (!tp->snd_wnd && !sock_flag(sk, SOCK_DEAD) &&
!((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV))) {
* we cannot allow such beasts to hang infinitely.
*/
#ifdef TCP_DEBUG
- if (1) {
- struct inet_sock *inet = inet_sk(sk);
- LIMIT_NETDEBUG(KERN_DEBUG "TCP: Treason uncloaked! Peer %u.%u.%u.%u:%u/%u shrinks window %u:%u. Repaired.\n",
- NIPQUAD(inet->daddr), ntohs(inet->dport),
+ struct inet_sock *inet = inet_sk(sk);
+ if (sk->sk_family == AF_INET) {
+ LIMIT_NETDEBUG(KERN_DEBUG "TCP: Peer %pI4:%u/%u unexpectedly shrunk window %u:%u (repaired)\n",
+ &inet->daddr, ntohs(inet->dport),
+ inet->num, tp->snd_una, tp->snd_nxt);
+ }
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ else if (sk->sk_family == AF_INET6) {
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ LIMIT_NETDEBUG(KERN_DEBUG "TCP: Peer %pI6:%u/%u unexpectedly shrunk window %u:%u (repaired)\n",
+ &np->daddr, ntohs(inet->dport),
inet->num, tp->snd_una, tp->snd_nxt);
}
#endif
+#endif
if (tcp_time_stamp - tp->rcv_tstamp > TCP_RTO_MAX) {
tcp_write_err(sk);
goto out;
goto out;
if (icsk->icsk_retransmits == 0) {
- if (icsk->icsk_ca_state == TCP_CA_Disorder ||
- icsk->icsk_ca_state == TCP_CA_Recovery) {
- if (tcp_is_sack(tp)) {
- if (icsk->icsk_ca_state == TCP_CA_Recovery)
- NET_INC_STATS_BH(LINUX_MIB_TCPSACKRECOVERYFAIL);
- else
- NET_INC_STATS_BH(LINUX_MIB_TCPSACKFAILURES);
- } else {
- if (icsk->icsk_ca_state == TCP_CA_Recovery)
- NET_INC_STATS_BH(LINUX_MIB_TCPRENORECOVERYFAIL);
- else
- NET_INC_STATS_BH(LINUX_MIB_TCPRENOFAILURES);
- }
+ int mib_idx;
+
+ if (icsk->icsk_ca_state == TCP_CA_Disorder) {
+ if (tcp_is_sack(tp))
+ mib_idx = LINUX_MIB_TCPSACKFAILURES;
+ else
+ mib_idx = LINUX_MIB_TCPRENOFAILURES;
+ } else if (icsk->icsk_ca_state == TCP_CA_Recovery) {
+ if (tcp_is_sack(tp))
+ mib_idx = LINUX_MIB_TCPSACKRECOVERYFAIL;
+ else
+ mib_idx = LINUX_MIB_TCPRENORECOVERYFAIL;
} else if (icsk->icsk_ca_state == TCP_CA_Loss) {
- NET_INC_STATS_BH(LINUX_MIB_TCPLOSSFAILURES);
+ mib_idx = LINUX_MIB_TCPLOSSFAILURES;
} else {
- NET_INC_STATS_BH(LINUX_MIB_TCPTIMEOUTS);
+ mib_idx = LINUX_MIB_TCPTIMEOUTS;
}
+ NET_INC_STATS_BH(sock_net(sk), mib_idx);
}
if (tcp_use_frto(sk)) {
static void tcp_write_timer(unsigned long data)
{
- struct sock *sk = (struct sock*)data;
+ struct sock *sk = (struct sock *)data;
struct inet_connection_sock *icsk = inet_csk(sk);
int event;
TCP_CHECK_TIMER(sk);
out:
- sk_stream_mem_reclaim(sk);
+ sk_mem_reclaim(sk);
out_unlock:
bh_unlock_sock(sk);
sock_put(sk);
}
TCP_CHECK_TIMER(sk);
- sk_stream_mem_reclaim(sk);
+ sk_mem_reclaim(sk);
resched:
inet_csk_reset_keepalive_timer (sk, elapsed);