• Jacob Keller's avatar
    i40e: add parsing of flexible filter fields from userdef · e793095e
    Jacob Keller authored
    Add code to parse the user-def field into a data structure format. This
    code is intended to allow future extensions of the user-def field by
    keeping all code that actually reads and writes the field into a single
    location. This ensures that we do not litter the driver with references
    to the user-def field and minimizes the amount of bitwise operations we
    need to do on the data.
    
    Add code which parses the lower 32bits into a flexible word and its
    offset. This will be used in a future patch to enable flexible filters
    which can match on some arbitrary data in the packet payload. For now,
    we just return -EOPNOTSUPP when this is used.
    
    Add code to fill in the user-def field when reporting the filter back,
    even though we don't actually implement any user-def fields yet.
    
    Additionally, ensure that we mask the extended FLOW_EXT bit from the
    flow_type now that we will be accepting filters which have the FLOW_EXT
    bit set (and thus make use of the user-def field).
    
    Change-Id: I238845035c179380a347baa8db8223304f5f6dd7
    Signed-off-by: default avatarJacob Keller <jacob.e.keller@intel.com>
    Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
    Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
    e793095e
i40e_ethtool.c 109 KB