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);