Subject: Re: [PATCH v2 8/8] Document future removal of sysctl_tcp_* options

From: William Allen Simpson <[email-masked]>
Date: Thu, 22 Oct 2009 06:53:03 -0400

Eric Dumazet wrote:
> Absolutely, global setting is a must when an admin wants a quick path.
> 
> The more flexible would be to have two bits per route, plus
> 2 bits on the global configuration.
> 
> global conf:
> 00 : timestamps OFF, unless a route setting is not 00
> 01 : timestamps ON, unless a route setting is not 00
> 10 : Force timestamps OFF, ignore route settings (emergency sysadmin request)
> 11 : Force timestamps ON, ignore route settings 
> 
> Route settings (used *only* if global setting is 0Y)
> 00 : global conf is used
> 01 : Force timestamps being OFF for this route
> 10 : Force timestamps being ON for this route
> 11 : complement global conf
> 
Nice!  Seems to have all the bases covered.  For consistency, I'd swap the
latter values (although I doubt complement will have much use):

00 : global conf is used
01 : complement global conf
10 : Timestamps OFF for this route
11 : Timestamps ON for this route

And the documentation should make it clear that global 10 and 11 override
per route 10 and 11.