The second field of metadata is reserved for user data
which was using a deprecated mbuf field.
It is moved to dynamic fields in order to allow removal of udata64.
The use of meta data must be enabled with a compile-time flag
RTE_PMD_ARK_{TX,RX}_USERDATA_ENABLE.
User data on Tx and Rx paths can be defined and used separately.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Signed-off-by: Ed Czeck <ed.czeck@atomicrules.com>
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