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authorEric Dumazet <edumazet@google.com>2018-09-21 08:51:50 -0700
committerDavid S. Miller <davem@davemloft.net>2018-09-21 19:37:59 -0700
commitd3edd06ea8ea9e03de6567fda80b8be57e21a537 (patch)
tree090196833fede243080048ee8d143b3cc83fecd4 /net/ipv4/tcp_timer.c
parenttcp: add tcp_wstamp_ns socket field (diff)
downloadlinux-dev-d3edd06ea8ea9e03de6567fda80b8be57e21a537.tar.xz
linux-dev-d3edd06ea8ea9e03de6567fda80b8be57e21a537.zip
tcp: provide earliest departure time in skb->tstamp
Switch internal TCP skb->skb_mstamp to skb->skb_mstamp_ns, from usec units to nsec units. Do not clear skb->tstamp before entering IP stacks in TX, so that qdisc or devices can implement pacing based on the earliest departure time instead of socket sk->sk_pacing_rate Packets are fed with tcp_wstamp_ns, and following patch will update tcp_wstamp_ns when both TCP and sch_fq switch to the earliest departure time mechanism. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--net/ipv4/tcp_timer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index 7fdf222a0bdf..61023d50cd60 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 = tp->tcp_mstamp;
+ skb->skb_mstamp_ns = tp->tcp_wstamp_ns;
else if (icsk->icsk_user_timeout &&
(s32)(tcp_time_stamp(tp) - start_ts) > icsk->icsk_user_timeout)
goto abort;