> You just replace: > > SEC("xdp") > > with > > SEC("xdp.frags") > > in your source file and, assuming your libbpf version is up-to-date, > that should be it as far as the kernel is concerned. Nice. It loads now. I appreciate the work done for multi buffer packets. > > However, you obviously also need to make sure there are no semantic > issues in your program before doing this. I.e., data_end is no longer > the end of your packet, so if you are using data_end-data to calculate > the packet len, that will no longer be accurate. If you need to access > data beyond the first frag you'll need to use the > xdp_{load,store}_bytes() helpers. I guess, this is not the case or does bpf_redirect needs it if I have multi frame packets? I realized that redirection actually doesn't happen if the packets exceed the page size. Thank you, Henning
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