diff options
| author | Yuchung Cheng <ycheng@google.com> | 2019-04-29 15:46:15 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-01 11:47:54 -0400 |
| commit | 9e450c1ecb027417c99eba651413d2a6ba6ffc1f (patch) | |
| tree | f399effe5bad9cdffefb6485555f269016233c71 /net/ipv4/tcp_input.c | |
| parent | 7c1f08154c4e34d10be41156375ce2b8ab591b0f (diff) | |
| download | linux-9e450c1ecb027417c99eba651413d2a6ba6ffc1f.tar.gz | |
tcp: better SYNACK sent timestamp
Detecting spurious SYNACK timeout using timestamp option requires recording the exact SYNACK skb timestamp. Previously the SYNACK sent timestamp was stamped slightly earlier before the skb was transmitted. This patch uses the SYNACK skb transmission timestamp directly. Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 695f840acc14..30c6a42b1f5b 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -6319,7 +6319,7 @@ static void tcp_openreq_init(struct request_sock *req, req->cookie_ts = 0; tcp_rsk(req)->rcv_isn = TCP_SKB_CB(skb)->seq; tcp_rsk(req)->rcv_nxt = TCP_SKB_CB(skb)->seq + 1; - tcp_rsk(req)->snt_synack = tcp_clock_us(); + tcp_rsk(req)->snt_synack = 0; tcp_rsk(req)->last_oow_ack_time = 0; req->mss = rx_opt->mss_clamp; req->ts_recent = rx_opt->saw_tstamp ? rx_opt->rcv_tsval : 0; |