From: Eric Dumazet <edumazet@google.com>
Date: Tue, 16 May 2017 14:00:11 -0700
Subject: tcp_westwood: use tcp_jiffies32 instead of tcp_time_stamp
Patch-mainline: v4.13-rc1
Git-commit: ad5ad69e6b48a7e5cc0391cc57c9e8a93a0c969c
References: bsc#1061739

This CC does not need 1 ms tcp_time_stamp and can use
the jiffy based 'timestamp'.

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>
Acked-by: Michal Kubecek <mkubecek@suse.cz>

---
 net/ipv4/tcp_westwood.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/ipv4/tcp_westwood.c b/net/ipv4/tcp_westwood.c
index 9775453b8d17..bec9cafbe3f9 100644
--- a/net/ipv4/tcp_westwood.c
+++ b/net/ipv4/tcp_westwood.c
@@ -68,7 +68,7 @@ static void tcp_westwood_init(struct sock *sk)
 	w->cumul_ack = 0;
 	w->reset_rtt_min = 1;
 	w->rtt_min = w->rtt = TCP_WESTWOOD_INIT_RTT;
-	w->rtt_win_sx = tcp_time_stamp;
+	w->rtt_win_sx = tcp_jiffies32;
 	w->snd_una = tcp_sk(sk)->snd_una;
 	w->first_ack = 1;
 }
@@ -116,7 +116,7 @@ static void tcp_westwood_pkts_acked(struct sock *sk,
 static void westwood_update_window(struct sock *sk)
 {
 	struct westwood *w = inet_csk_ca(sk);
-	s32 delta = tcp_time_stamp - w->rtt_win_sx;
+	s32 delta = tcp_jiffies32 - w->rtt_win_sx;
 
 	/* Initialize w->snd_una with the first acked sequence number in order
 	 * to fix mismatch between tp->snd_una and w->snd_una for the first
@@ -140,7 +140,7 @@ static void westwood_update_window(struct sock *sk)
 		westwood_filter(w, delta);
 
 		w->bk = 0;
-		w->rtt_win_sx = tcp_time_stamp;
+		w->rtt_win_sx = tcp_jiffies32;
 	}
 }
 
-- 
2.15.1