[PATCH 1/3] tcp_cubic: fix train length comparision
From: Sangtae Ha <hidden>
Date: 2011-03-14 00:03:32
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
HyStart detects the safe exit point when the ACK train length is larger than the one-way delay. This needs to be applied after the patches Stephen made to fix clock dependency of HyStart. Signed-off-by: Sangtae Ha <redacted> --- net/ipv4/tcp_cubic.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index 91ef5e6..ab9f888 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c@@ -356,7 +356,7 @@ static void hystart_update(struct sock *sk, u32 delay) /* first detection parameter - ack-train detection */ if ((s32)(now - ca->last_ack) <= hystart_ack_delta) { ca->last_ack = now; - if ((s32)(now - ca->round_start) <= ca->delay_min >> 4) + if ((s32)(now - ca->round_start) > ca->delay_min >> 4) ca->found |= HYSTART_ACK_TRAIN; }
--
1.7.0.4