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-rw-r--r--net/ipv4/tcp_output.c9
-rw-r--r--net/ipv4/tcp_timer.c2
2 files changed, 7 insertions, 4 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 059b67af28b1..f14df66a0c85 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -52,9 +52,8 @@ void tcp_mstamp_refresh(struct tcp_sock *tp)
{
u64 val = tcp_clock_ns();
- /* departure time for next data packet */
- if (val > tp->tcp_wstamp_ns)
- tp->tcp_wstamp_ns = val;
+ if (val > tp->tcp_clock_cache)
+ tp->tcp_clock_cache = val;
val = div_u64(val, NSEC_PER_USEC);
if (val > tp->tcp_mstamp)
@@ -1050,6 +1049,10 @@ static int __tcp_transmit_skb(struct sock *sk, struct sk_buff *skb,
if (unlikely(!skb))
return -ENOBUFS;
}
+
+ /* TODO: might take care of jitter here */
+ tp->tcp_wstamp_ns = max(tp->tcp_wstamp_ns, tp->tcp_clock_cache);
+
skb->skb_mstamp_ns = tp->tcp_wstamp_ns;
inet = inet_sk(sk);
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index 61023d50cd60..676020663ce8 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -360,7 +360,7 @@ static void tcp_probe_timer(struct sock *sk)
*/
start_ts = tcp_skb_timestamp(skb);
if (!start_ts)
- skb->skb_mstamp_ns = tp->tcp_wstamp_ns;
+ skb->skb_mstamp_ns = tp->tcp_clock_cache;
else if (icsk->icsk_user_timeout &&
(s32)(tcp_time_stamp(tp) - start_ts) > icsk->icsk_user_timeout)
goto abort;