From 30cfd0baf0a0c4329fff1ef4b622919297969ec8 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Wed, 25 Jul 2007 23:49:34 -0700 Subject: [TCP]: congestion control API pass RTT in microseconds This patch changes the API for the callback that is done after an ACK is received. It solves a couple of issues: * Some congestion controls want higher resolution value of RTT (controlled by TCP_CONG_RTT_SAMPLE flag). These don't really want a ktime, but all compute a RTT in microseconds. * Other congestion control could use RTT at jiffies resolution. To keep API consistent the units should be the same for both cases, just the resolution should change. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- net/ipv4/tcp_htcp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/ipv4/tcp_htcp.c') diff --git a/net/ipv4/tcp_htcp.c b/net/ipv4/tcp_htcp.c index 08a02e6045c9..fa61663ace3b 100644 --- a/net/ipv4/tcp_htcp.c +++ b/net/ipv4/tcp_htcp.c @@ -98,7 +98,7 @@ static inline void measure_rtt(struct sock *sk) } } -static void measure_achieved_throughput(struct sock *sk, u32 pkts_acked, ktime_t last) +static void measure_achieved_throughput(struct sock *sk, u32 pkts_acked, s32 rtt) { const struct inet_connection_sock *icsk = inet_csk(sk); const struct tcp_sock *tp = tcp_sk(sk); -- cgit v1.2.3