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>

1 files changed, 7 insertions, 7 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index c0b3f909df39..6a15c9b80b09 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -463,7 +463,7 @@ void tcp_init_buffer_space(struct sock *sk)
 		tp->window_clamp = max(2 * tp->advmss, maxwin - tp->advmss);
 
 	tp->rcv_ssthresh = min(tp->rcv_ssthresh, tp->window_clamp);
-	tp->snd_cwnd_stamp = tcp_time_stamp;
+	tp->snd_cwnd_stamp = tcp_jiffies32;
 }
 
 /* 5. Recalculate window clamp after socket hit its memory bounds. */
@@ -1954,7 +1954,7 @@ void tcp_enter_loss(struct sock *sk)
 	}
 	tp->snd_cwnd	   = 1;
 	tp->snd_cwnd_cnt   = 0;
-	tp->snd_cwnd_stamp = tcp_time_stamp;
+	tp->snd_cwnd_stamp = tcp_jiffies32;
 
 	tp->retrans_out = 0;
 	tp->lost_out = 0;
@@ -2383,7 +2383,7 @@ static void tcp_undo_cwnd_reduction(struct sock *sk, bool unmark_loss)
 			tcp_ecn_withdraw_cwr(tp);
 		}
 	}
-	tp->snd_cwnd_stamp = tcp_time_stamp;
+	tp->snd_cwnd_stamp = tcp_jiffies32;
 	tp->undo_marker = 0;
 }
 
@@ -2520,7 +2520,7 @@ static inline void tcp_end_cwnd_reduction(struct sock *sk)
 	if (inet_csk(sk)->icsk_ca_state == TCP_CA_CWR ||
 	    (tp->undo_marker && tp->snd_ssthresh < TCP_INFINITE_SSTHRESH)) {
 		tp->snd_cwnd = tp->snd_ssthresh;
-		tp->snd_cwnd_stamp = tcp_time_stamp;
+		tp->snd_cwnd_stamp = tcp_jiffies32;
 	}
 	tcp_ca_event(sk, CA_EVENT_COMPLETE_CWR);
 }
@@ -2590,7 +2590,7 @@ static void tcp_mtup_probe_success(struct sock *sk)
 		       tcp_mss_to_mtu(sk, tp->mss_cache) /
 		       icsk->icsk_mtup.probe_size;
 	tp->snd_cwnd_cnt = 0;
-	tp->snd_cwnd_stamp = tcp_time_stamp;
+	tp->snd_cwnd_stamp = tcp_jiffies32;
 	tp->snd_ssthresh = tcp_current_ssthresh(sk);
 
 	icsk->icsk_mtup.search_low = icsk->icsk_mtup.probe_size;
@@ -2976,7 +2976,7 @@ static void tcp_cong_avoid(struct sock *sk, u32 ack, u32 acked)
 	const struct inet_connection_sock *icsk = inet_csk(sk);
 
 	icsk->icsk_ca_ops->cong_avoid(sk, ack, acked);
-	tcp_sk(sk)->snd_cwnd_stamp = tcp_time_stamp;
+	tcp_sk(sk)->snd_cwnd_stamp = tcp_jiffies32;
 }
 
 /* Restart timer after forward progress on connection.
@@ -5019,7 +5019,7 @@ static void tcp_new_space(struct sock *sk)
 
 	if (tcp_should_expand_sndbuf(sk)) {
 		tcp_sndbuf_expand(sk);
-		tp->snd_cwnd_stamp = tcp_time_stamp;
+		tp->snd_cwnd_stamp = tcp_jiffies32;
 	}
 
 	sk->sk_write_space(sk);