diff options
| author |   Eric Dumazet <edumazet@google.com> | 2017-05-16 14:00:04 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-05-17 16:06:01 -0400 |
| commit | c2203cf75ed7dfab8dfc7ac915a726880ee7512f (patch) | |
| tree | 502b28a4374307fe23a75adc34e167fdf7e3cba3 /net/ipv4/tcp_output.c | |
| parent | tcp: use tcp_jiffies32 to feed tp->lsndtime (diff) | |
| download | linux-dev-c2203cf75ed7dfab8dfc7ac915a726880ee7512f.tar.xz linux-dev-c2203cf75ed7dfab8dfc7ac915a726880ee7512f.zip | |
tcp: use tcp_jiffies32 to feed tp->snd_cwnd_stamp
Use tcp_jiffies32 instead of tcp_time_stamp to feed
tp->snd_cwnd_stamp.
tcp_time_stamp will soon be a litle bit more expensive
than simply reading 'jiffies'.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-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 | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index be9f8f483e21..4bd50f0b236b 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -151,7 +151,7 @@ void tcp_cwnd_restart(struct sock *sk, s32 delta) while ((delta -= inet_csk(sk)->icsk_rto) > 0 && cwnd > restart_cwnd) cwnd >>= 1; tp->snd_cwnd = max(cwnd, restart_cwnd); - tp->snd_cwnd_stamp = tcp_time_stamp; + tp->snd_cwnd_stamp = tcp_jiffies32; tp->snd_cwnd_used = 0; } @@ -1576,7 +1576,7 @@ static void tcp_cwnd_application_limited(struct sock *sk) } tp->snd_cwnd_used = 0; } - tp->snd_cwnd_stamp = tcp_time_stamp; + tp->snd_cwnd_stamp = tcp_jiffies32; } static void tcp_cwnd_validate(struct sock *sk, bool is_cwnd_limited) @@ -1597,14 +1597,14 @@ static void tcp_cwnd_validate(struct sock *sk, bool is_cwnd_limited) if (tcp_is_cwnd_limited(sk)) { /* Network is feed fully. */ tp->snd_cwnd_used = 0; - tp->snd_cwnd_stamp = tcp_time_stamp; + tp->snd_cwnd_stamp = tcp_jiffies32; } else { /* Network starves. */ if (tp->packets_out > tp->snd_cwnd_used) tp->snd_cwnd_used = tp->packets_out; if (sysctl_tcp_slow_start_after_idle && - (s32)(tcp_time_stamp - tp->snd_cwnd_stamp) >= inet_csk(sk)->icsk_rto && + (s32)(tcp_jiffies32 - tp->snd_cwnd_stamp) >= inet_csk(sk)->icsk_rto && !ca_ops->cong_control) tcp_cwnd_application_limited(sk); |