IORING_REGISTER

pub const IORING_REGISTER = enum(u32) {
    REGISTER_BUFFERS,
    UNREGISTER_BUFFERS,
    REGISTER_FILES,
    UNREGISTER_FILES,
    REGISTER_EVENTFD,
    UNREGISTER_EVENTFD,
    REGISTER_FILES_UPDATE,
    REGISTER_EVENTFD_ASYNC,
    REGISTER_PROBE,
    REGISTER_PERSONALITY,
    UNREGISTER_PERSONALITY,
    REGISTER_RESTRICTIONS,
    REGISTER_ENABLE_RINGS,

    // extended with tagging
    REGISTER_FILES2,
    REGISTER_FILES_UPDATE2,
    REGISTER_BUFFERS2,
    REGISTER_BUFFERS_UPDATE,

    // set/clear io-wq thread affinities
    REGISTER_IOWQ_AFF,
    UNREGISTER_IOWQ_AFF,

    // set/get max number of io-wq workers
    REGISTER_IOWQ_MAX_WORKERS,

    // register/unregister io_uring fd with the ring
    REGISTER_RING_FDS,
    UNREGISTER_RING_FDS,

    // register ring based provide buffer group
    REGISTER_PBUF_RING,
    UNREGISTER_PBUF_RING,

    // sync cancelation API
    REGISTER_SYNC_CANCEL,

    // register a range of fixed file slots for automatic slot allocation
    REGISTER_FILE_ALLOC_RANGE,

    // return status information for a buffer group
    REGISTER_PBUF_STATUS,

    // set/clear busy poll settings
    REGISTER_NAPI,
    UNREGISTER_NAPI,

    REGISTER_CLOCK,

    // clone registered buffers from source ring to current ring
    REGISTER_CLONE_BUFFERS,

    // send MSG_RING without having a ring
    REGISTER_SEND_MSG_RING,

    // register a netdev hw rx queue for zerocopy
    REGISTER_ZCRX_IFQ,

    // resize CQ ring
    REGISTER_RESIZE_RINGS,

    REGISTER_MEM_REGION,

    // flag added to the opcode to use a registered ring fd
    REGISTER_USE_REGISTERED_RING = 1 << 31,

    _,
}