[ovs-dev] [PATCH] Document map members as separate columns

Jesse Gross jesse at nicira.com
Tue Sep 20 22:51:32 UTC 2011


On Tue, Sep 20, 2011 at 2:42 PM, Ben Pfaff <blp at nicira.com> wrote:
> +      <column name="options" key="csum">
> +        Optional.  Compute GRE checksums on outgoing packets.  Checksums
> +        present on incoming packets will be validated regardless of this
> +        setting.  Note that GRE checksums impose a significant performance
> +        penalty as they cover the entire packet.  As the contents of the packet
> +        is typically covered by L3 and L4 checksums, this additional checksum
> +        only adds value for the GRE and encapsulated Ethernet headers.  Default
> +        is disabled, set to <code>true</code> to enable.
> +      </column>

This only applies to GRE (and GRE over IPsec by extension, although
that doesn't really make sense) but it's in the section for all
tunnels.  CAPWAP doesn't support checksums (and neither does vxlan
when we implement it).

Otherwise the options for the interface table look good to me.



More information about the dev mailing list