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tcp: fix under-accounting retransmit SNMP counters

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This patch fixes these under-accounting SNMP rtx stats
LINUX_MIB_TCPFORWARDRETRANS
LINUX_MIB_TCPFASTRETRANS
LINUX_MIB_TCPSLOWSTARTRETRANS
when retransmitting TSO packets

Fixes: 10d3be5692 ("tcp-tso: do not split TSO packets at retransmit time")
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuchung Cheng 2016-09-21 16:16:14 -07:00 committed by David S. Miller
parent ba1ba25d31
commit de1d657816
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/tcp_output.c
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@ -2831,7 +2831,7 @@ begin_fwd:
if (tcp_retransmit_skb(sk, skb, segs))
return;
NET_INC_STATS(sock_net(sk), mib_idx);
NET_ADD_STATS(sock_net(sk), mib_idx, tcp_skb_pcount(skb));
if (tcp_in_cwnd_reduction(sk))
tp->prr_out += tcp_skb_pcount(skb);