netdev - Re: [PATCH] [RFC] allow admin/users to specify rto_min in milliseconds rather than jiffies

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Message-ID: <46DEE330.40502@hp.com>
Date:	Wed, 05 Sep 2007 10:11:12 -0700
From:	Rick Jones <rick.jones2@...com>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] [RFC] allow admin/users to specify rto_min in	milliseconds
 rather than jiffies

Stephen Hemminger wrote:
> On Tue, 4 Sep 2007 13:20:47 -0700 (PDT)
> Rick Jones <rick.jones2@...com> wrote:
> 
> 
>>Build upon David Miller's initial patches to set the per-route rto_min
>>so users can specify the rto_min in the same units (milliseconds) in
>>which they are displayed.  This is desirable because asking users to
>>convert to and from jiffies themselves, when there can be different
>>values of HZ from system to system would be error prone.
>>
>>Signed-off-by: Rick Jones <rick.jones2@...com>
>>---
> 
> 
> The api in netlink should be in milliseconds rather than compensating
> in the application (iproute2).

In unrelated work I found myself using tc to setup some WAN emulation. 
There I noticed that one can specify times using a units suffix. So, one 
can say 100ms, 100us, or 100s.

That seems like a nice, friendly interface.  I've not looked yet to see 
if it was converting up in tc and then passing a consistent unit to the 
kernel, or if all the conversion was happening in the kernel.

rick jones
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