[ovs-dev] [PATCH 1/2] cfm: Scope CFM packets to key zero.

Ethan Jackson ethan at nicira.com
Sat Oct 13 21:26:49 UTC 2012


Good idea, I've added the following paragraph

      <p>
          When operating over tunnels which have no <code>in_key</code>, or an
          <code>in_key</code> of <code>flow</code>.  CFM will only accept CCMs
          with a tunnel key of zero.
      </p>

Ethan

On Fri, Oct 12, 2012 at 8:12 PM, Ben Pfaff <blp at nicira.com> wrote:
> On Fri, Oct 12, 2012 at 07:40:22PM -0700, Ethan Jackson wrote:
>> Before this patch, when a tunnel is configured with key=flow, CFM
>> didn't verify that incoming packets had the appropriate key of
>> zero.  This could cause the CFM module to consume packets which
>> weren't actually intended for it.
>>
>> Bug #13542.
>> Signed-off-by: Ethan Jackson <ethan at nicira.com>
>
> This looks good to me.
>
> It might be good to add some words about this verification in the
> documentation for CFM in vswitch.xml.



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