From 756ee1729b2feb3a45767da29e338f70f2086ba3 Mon Sep 17 00:00:00 2001 From: Lawrence Brakmo Date: Wed, 11 May 2016 10:02:13 -0700 Subject: tcp: replace cnt & rtt with struct in pkts_acked() Replace 2 arguments (cnt and rtt) in the congestion control modules' pkts_acked() function with a struct. This will allow adding more information without having to modify existing congestion control modules (tcp_nv in particular needs bytes in flight when packet was sent). As proposed by Neal Cardwell in his comments to the tcp_nv patch. Signed-off-by: Lawrence Brakmo Acked-by: Yuchung Cheng Signed-off-by: David S. Miller --- net/ipv4/tcp_cubic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'net/ipv4/tcp_cubic.c') diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c index 0ce946e395e1..c99230efcd52 100644 --- a/net/ipv4/tcp_cubic.c +++ b/net/ipv4/tcp_cubic.c @@ -437,21 +437,21 @@ static void hystart_update(struct sock *sk, u32 delay) /* Track delayed acknowledgment ratio using sliding window * ratio = (15*ratio + sample) / 16 */ -static void bictcp_acked(struct sock *sk, u32 cnt, s32 rtt_us) +static void bictcp_acked(struct sock *sk, const struct ack_sample *sample) { const struct tcp_sock *tp = tcp_sk(sk); struct bictcp *ca = inet_csk_ca(sk); u32 delay; /* Some calls are for duplicates without timetamps */ - if (rtt_us < 0) + if (sample->rtt_us < 0) return; /* Discard delay samples right after fast recovery */ if (ca->epoch_start && (s32)(tcp_time_stamp - ca->epoch_start) < HZ) return; - delay = (rtt_us << 3) / USEC_PER_MSEC; + delay = (sample->rtt_us << 3) / USEC_PER_MSEC; if (delay == 0) delay = 1; -- cgit