[ovs-dev] [PATCH 09/11] cfm: Allow accurate transmission intervals in extended mode.

Ben Pfaff blp at nicira.com
Thu Sep 8 21:00:05 UTC 2011


On Tue, Sep 06, 2011 at 07:32:32PM -0700, Ethan Jackson wrote:
> The standard CFM protocol only allows a handful of transmission
> rates.  This is particularly problematic if you want to support a
> transmission rate slower than 100 ms and faster than 1000 ms.
> 
> This patch allows arbitrary transmission rates (between 1 ms and
> 65535 ms).  It does this by commandeering parts of a reserved
> "zero" field in the ccm message.  This breaks wire compatibility
> with standard 802.1ag implementations, and thus is only supported
> in extended mode.
> 
> Bug #7014.

Seems OK.

s/accurracy/accuracy/ in the documentation.

Have you thought at all about how CFM could be unit-tested?  Unit
tests would increase my confidence significantly.



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