leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tcp: fix Fast Open snmp over-counting bug

Browse Source 
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>
This commit is contained in:
Yuchung Cheng 2015-11-18 18:17:31 -08:00 committed by David S. Miller
parent 0e45f4da59
commit dd52bc2b4e
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/ipv4/tcp_timer.c
View File

@ -168,7 +168,7 @@ static int tcp_write_timeout(struct sock *sk)
dst_negative_advice(sk); dst_negative_advice(sk);
if (tp->syn_fastopen || tp->syn_data) if (tp->syn_fastopen || tp->syn_data)
tcp_fastopen_cache_set(sk, 0, NULL, true, 0); 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), NET_INC_STATS_BH(sock_net(sk),
LINUX_MIB_TCPFASTOPENACTIVEFAIL); LINUX_MIB_TCPFASTOPENACTIVEFAIL);
} }