[net-next PATCH v2 1/3] net: TCP thin-stream detection
From: Andreas Petlund <hidden>
Date: 2010-02-08 15:04:41
Also in:
lkml
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
Major change: Stopped stream from being detected as thin if in initial slow-start
From 1c448f7c65a016ded7eedd44fe74874e5b3cdbc0 Mon Sep 17 00:00:00 2001
From: Andreas Petlund <redacted> Date: Mon, 8 Feb 2010 14:05:24 +0100 Subject: [PATCH 1/3] net: TCP thin-stream detection Signed-off-by: Andreas Petlund <redacted> --- include/net/tcp.h | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 87d164b..e5e2056 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h@@ -1386,6 +1386,13 @@ static inline void tcp_highest_sack_combine(struct sock *sk, tcp_sk(sk)->highest_sack = new; } +/* Determines whether this is a thin stream (which may suffer from + * increased latency). Used to trigger latency-reducing mechanisms.*/ +static inline unsigned int tcp_stream_is_thin(struct tcp_sock *tp) +{ + return tp->packets_out < 4 && !tcp_in_initial_slowstart(tp); +} + /* /proc */ enum tcp_seq_states { TCP_SEQ_STATE_LISTENING,
--
1.6.3.3