From a5f37a687f3fc7c3cea674287642424ebf9764a1 Mon Sep 17 00:00:00 2001 From: Yuchung Cheng Date: Wed, 28 Nov 2018 16:06:44 -0800 Subject: [PATCH] tcp: fix SNMP under-estimation on failed retransmission [ Upstream commit ec641b39457e17774313b66697a8a1dc070257bd ] Previously the SNMP counter LINUX_MIB_TCPRETRANSFAIL is not counting the TSO/GSO properly on failed retransmission. This patch fixes that. Signed-off-by: Yuchung Cheng Signed-off-by: Eric Dumazet Signed-off-by: Neal Cardwell Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/ipv4/tcp_output.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 53f910bb5508..8971cc15d278 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -2919,7 +2919,7 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs) TCP_SKB_CB(skb)->sacked |= TCPCB_EVER_RETRANS; trace_tcp_retransmit_skb(sk, skb); } else if (err != -EBUSY) { - NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPRETRANSFAIL); + NET_ADD_STATS(sock_net(sk), LINUX_MIB_TCPRETRANSFAIL, segs); } return err; } -- 2.11.0