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_yeah.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/ipv4/tcp_yeah.c') diff --git a/net/ipv4/tcp_yeah.c b/net/ipv4/tcp_yeah.c index c04b7c6ec702..c107fba7430e 100644 --- a/net/ipv4/tcp_yeah.c +++ b/net/ipv4/tcp_yeah.c @@ -58,7 +58,7 @@ static void tcp_yeah_init(struct sock *sk) } -static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked, ktime_t last) +static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked, s32 rtt_us) { const struct inet_connection_sock *icsk = inet_csk(sk); struct yeah *yeah = inet_csk_ca(sk); @@ -66,7 +66,7 @@ static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked, ktime_t last) if (icsk->icsk_ca_state == TCP_CA_Open) yeah->pkts_acked = pkts_acked; - tcp_vegas_pkts_acked(sk, pkts_acked, last); + tcp_vegas_pkts_acked(sk, pkts_acked, rtt_us); } static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack, -- cgit