• Jacob Keller's avatar
    devlink: implement DEVLINK_CMD_REGION_NEW · b9a17abf
    Jacob Keller authored
    Implement support for the DEVLINK_CMD_REGION_NEW command for creating
    snapshots. This new command parallels the existing
    DEVLINK_CMD_REGION_DEL.
    
    In order for DEVLINK_CMD_REGION_NEW to work for a region, the new
    ".snapshot" operation must be implemented in the region's ops structure.
    
    The desired snapshot id must be provided. This helps avoid confusion on
    the purpose of DEVLINK_CMD_REGION_NEW, and keeps the API simpler.
    
    The requested id will be inserted into the xarray tracking the number of
    snapshots using each id. If this id is already used by another snapshot
    on any region, an error will be returned.
    Signed-off-by: default avatarJacob Keller <jacob.e.keller@intel.com>
    Reviewed-by: default avatarJiri Pirko <jiri@mellanox.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    b9a17abf
devlink.h 37.3 KB