From c33ad6e476e4cdc245215f3eb5b3df353df1b370 Mon Sep 17 00:00:00 2001 From: Baruch Even Date: Mon, 20 Mar 2006 22:22:20 -0800 Subject: [PATCH] [TCP] H-TCP: Use msecs_to_jiffies Use functions to calculate jiffies from milliseconds and not the old, crude method of dividing HZ by a value. Ensures more accurate values even in the face of strange HZ values. Signed-off-By: Baruch Even Signed-off-by: David S. Miller --- net/ipv4/tcp_htcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv4/tcp_htcp.c b/net/ipv4/tcp_htcp.c index 128de4d7c0..fda2f87359 100644 --- a/net/ipv4/tcp_htcp.c +++ b/net/ipv4/tcp_htcp.c @@ -80,7 +80,7 @@ static inline void measure_rtt(struct sock *sk) if (icsk->icsk_ca_state == TCP_CA_Open && tp->snd_ssthresh < 0xFFFF && ca->ccount > 3) { if (ca->maxRTT < ca->minRTT) ca->maxRTT = ca->minRTT; - if (ca->maxRTT < srtt && srtt <= ca->maxRTT+HZ/50) + if (ca->maxRTT < srtt && srtt <= ca->maxRTT+msecs_to_jiffies(20)) ca->maxRTT = srtt; } } @@ -135,7 +135,7 @@ static inline void htcp_beta_update(struct htcp *ca, u32 minRTT, u32 maxRTT) } } - if (ca->modeswitch && minRTT > max(HZ/100, 1) && maxRTT) { + if (ca->modeswitch && minRTT > msecs_to_jiffies(10) && maxRTT) { ca->beta = (minRTT<<7)/maxRTT; if (ca->beta < BETA_MIN) ca->beta = BETA_MIN; -- 2.39.5