XDP prog replace/update

[cjcanbibi]

How can I use LinkSetXdpFdWithFlags so that I can force update or replace XDP programs that are already mounted on the network interface card? I tried to set the flag to 0, but the result was "file exists". I checked the relevant network information and noticed a similar flag called XDP_FLAGS_REPLACE, but I couldn't find its definition or reference in the netlink library. What's going on? Or LinkSetXdpFdWithFlags doesn't support forced replacement of XDP programs?
But I think that smooth upgrade is still very important in the production environment. So I need help in this regard, thank you！