netdev - Re: [PATCH] tcp: bound RTO to minimum

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Message-ID: <CAK6E8=dXf=wsZOB+ZUNuUpLyV2vrcgf7pvwYPz1YTmF81WuGDA@mail.gmail.com>
Date:	Wed, 24 Aug 2011 18:50:29 -0700
From:	Yuchung Cheng <ycheng@...gle.com>
To:	Hagen Paul Pfeifer <hagen@...u.net>
Cc:	netdev@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH] tcp: bound RTO to minimum

On Wed, Aug 24, 2011 at 4:41 PM, Hagen Paul Pfeifer <hagen@...u.net> wrote:
> Check if calculated RTO is less then TCP_RTO_MIN. If this is true we
> adjust the value to TCP_RTO_MIN.
>
but tp->rttvar is already lower-bounded via tcp_rto_min()?

static inline void tcp_set_rto(struct sock *sk)
{
...

  /* NOTE: clamping at TCP_RTO_MIN is not required, current algo
   * guarantees that rto is higher.
   */
  tcp_bound_rto(sk);
}
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