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| author | Yuchung Cheng <ycheng@google.com> | 2016-09-21 16:16:15 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-22 03:33:01 -0400 |
| commit | 7e32b44361abc77fbc01f2b97b045c405b2583e5 (patch) | |
| tree | db26faa9681668af9678e478ec9aaed6a1b58c01 /net/ipv4/tcp_output.c | |
| parent | de1d657816c6fbb70f07b01d50ec669dff0d4e60 (diff) | |
| download | linux-7e32b44361abc77fbc01f2b97b045c405b2583e5.tar.gz linux-7e32b44361abc77fbc01f2b97b045c405b2583e5.tar.xz | |
tcp: properly account Fast Open SYN-ACK retrans
Since the TFO socket is accepted right off SYN-data, the socket
owner can call getsockopt(TCP_INFO) to collect ongoing SYN-ACK
retransmission or timeout stats (i.e., tcpi_total_retrans,
tcpi_retransmits). Currently those stats are only updated
upon handshake completes. This patch fixes it.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
| -rw-r--r-- | net/ipv4/tcp_output.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index e15ec82a6319..5288cec4a2b2 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -3568,6 +3568,8 @@ int tcp_rtx_synack(const struct sock *sk, struct request_sock *req) if (!res) { __TCP_INC_STATS(sock_net(sk), TCP_MIB_RETRANSSEGS); __NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPSYNRETRANS); + if (unlikely(tcp_passive_fastopen(sk))) + tcp_sk(sk)->total_retrans++; } return res; } |