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authorEric Dumazet <edumazet@google.com>2018-09-21 18:51:46 +0300
committerDavid S. Miller <davem@davemloft.net>2018-09-22 05:37:59 +0300
commit72b0094f918294e6cb8cf5c3b4520d928fbb1a57 (patch)
treed654b14a3f6b48816a2f3416f9632648e2de8fde /include
parent4f4b93a88c9cf40b3d8711cba062d2dd45f30896 (diff)
downloadlinux-72b0094f918294e6cb8cf5c3b4520d928fbb1a57.tar.xz
tcp: switch tcp_clock_ns() to CLOCK_TAI base
TCP pacing is either implemented in sch_fq or internally. We have the goal of being able to offload pacing on the NICS. TCP will soon provide per skb skb->tstamp as early departure time. Like ETF in commit 25db26a91364 ("net/sched: Introduce the ETF Qdisc") we chose CLOCK_T as the clock base, so that TCP and pacers can share a common clock, to get better RTT samples (without pacing artificially inflating these samples). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/tcp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 770917d0caa7..c6f0bc1dc678 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -732,7 +732,7 @@ void tcp_send_window_probe(struct sock *sk);
static inline u64 tcp_clock_ns(void)
{
- return local_clock();
+ return ktime_get_tai_ns();
}
static inline u64 tcp_clock_us(void)