netdev - Re: dccp test tree [RFC/RFT] [Patch 1/3] dccp: minor Kconfig cosmetics

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Message-ID: <4962AE90.3030706@cn.fujitsu.com>
Date:	Tue, 06 Jan 2009 09:06:24 +0800
From:	Wei Yongjun <yjwei@...fujitsu.com>
To:	Gerrit Renker <gerrit@....abdn.ac.uk>, dccp@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: dccp test tree [RFC/RFT] [Patch 1/3] dccp: minor Kconfig cosmetics

Gerrit Renker wrote:
> dccp ccid-3: Reformat Kconfig option for RTO timeout
>
> Apart from fixing indenting, it also updates the references 
> (RFC 5348 has replaced RFC 3448).
>
> Signed-off-by: Gerrit Renker <gerrit@....abdn.ac.uk>
> ---
>  net/dccp/ccids/Kconfig |   58 ++++++++++++++++++++++++-------------------------
>  1 file changed, 29 insertions(+), 29 deletions(-)
>
> --- a/net/dccp/ccids/Kconfig
> +++ b/net/dccp/ccids/Kconfig
> @@ -48,35 +48,35 @@ config IP_DCCP_CCID3_DEBUG
>  	  If in doubt, say N.
>  
>  config IP_DCCP_CCID3_RTO
> -	  int "Use higher bound for nofeedback timer"
> -	  default 100
> -	  depends on IP_DCCP_CCID3 && EXPERIMENTAL
> -	  ---help---
> -	    Use higher lower bound for nofeedback timer expiration.
> -
> -	    The TFRC nofeedback timer normally expires after the maximum of 4
> -	    RTTs and twice the current send interval (RFC 3448, 4.3). On LANs
> -	    with a small RTT this can mean a high processing load and reduced
> -	    performance, since then the nofeedback timer is triggered very
> -	    frequently.
> -
> -	    This option enables to set a higher lower bound for the nofeedback
> -	    value. Values in units of milliseconds can be set here.
> -
> -	    A value of 0 disables this feature by enforcing the value specified
> -	    in RFC 3448. The following values have been suggested as bounds for
> -	    experimental use:
> -	    	* 16-20ms to match the typical multimedia inter-frame interval
> -	    	* 100ms as a reasonable compromise [default]
> -	    	* 1000ms corresponds to the lower TCP RTO bound (RFC 2988, 2.4)
> -
> -	    The default of 100ms is a compromise between a large value for
> -	    efficient DCCP implementations, and a small value to avoid disrupting
> -	    the network in times of congestion.
> -
> -	    The purpose of the nofeedback timer is to slow DCCP down when there
> -	    is serious network congestion: experimenting with larger values should
> -	    therefore not be performed on WANs.
> +	int "Use higher bound for nofeedback timer"
> +	default 100
> +	depends on IP_DCCP_CCID3
> +	---help---
> +	  Use higher lower bound for nofeedback timer expiration.
> +
> +	  The TFRC nofeedback timer normally expires after the maximum of 4
> +	  RTTs and twice the current send interval (RFC 5448, 4.3). On LANs
>   

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
RFC 5448 should be RFC 5348.

> +	  with a small RTT this can mean a high processing load and reduced
> +	  performance, since then the nofeedback timer is triggered very
> +	  frequently.
> +
> +	  This option enables to set a higher lower bound for the nofeedback
> +	  value. Values in units of milliseconds can be set here.
> +
> +	  A value of 0 disables this feature by enforcing the value specified
> +	  in RFC 5448. The following values have been suggested as bounds for
>   

RFC 5448 should be RFC 5348.

> +	  experimental use:
> +	    * 16-20ms to match the typical multimedia inter-frame interval
> +	    * 100ms as a reasonable compromise [default]
> +	    * 1000ms corresponds to the lower TCP RTO bound (RFC 2988, 2.4)
> +
> +	  The default of 100ms is a compromise between a large value for
> +	  efficient DCCP implementations, and a small value to avoid disrupting
> +	  the network in times of congestion.
> +
> +	  The purpose of the nofeedback timer is to slow DCCP down when there
> +	  is serious network congestion: experimenting with larger values should
> +	  therefore not be performed on WANs.
>  
>  config IP_DCCP_TFRC_LIB
>  	def_bool y if IP_DCCP_CCID3
> --
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>
>   

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