Commit dd52bc2b authored Nov 18, 2015 by Yuchung Cheng Committed by David S. Miller Nov 20, 2015

tcp: fix Fast Open snmp over-counting bug



Fix incrementing TCPFastOpenActiveFailed snmp stats multiple times
when the handshake experiences multiple SYN timeouts.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 0e45f4da

net/ipv4/tcp_timer.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -168,7 +168,7 @@ static int tcp_write_timeout(struct sock *sk)
		dst_negative_advice(sk);
		if (tp->syn_fastopen \|\| tp->syn_data)
		tcp_fastopen_cache_set(sk, 0, NULL, true, 0);
		if (tp->syn_data)
		if (tp->syn_data && icsk->icsk_retransmits == 1)
		NET_INC_STATS_BH(sock_net(sk),
		LINUX_MIB_TCPFASTOPENACTIVEFAIL);
		}