On 2018-08-10 03:51, Jakub Kicinski wrote: > On Thu, 09 Aug 2018 18:18:08 +0200, kdjimeli wrote: >> Hello, >> >> I have been trying to test a sample AF_XDP program, but I have been >> experiencing some issues. >> After building the sample code >> https://github.com/torvalds/linux/tree/master/samples/bpf, >> when running the xdpsock binary, I get the errors >> "libbpf: failed to create map (name: 'xsks_map'): Invalid argument" >> "libbpf: failed to load object './xdpsock_kern.o" >> >> I tried to figure out the cause of the error but all I know is that it >> occurs at line 910 with the function >> call "bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd)". >> >> Please I would like to inquire what could be a possible for this error. > > which kernel version are you running?
My kernel version is 4.18.0-rc8+. I cloned it from https://github.com/torvalds/linux before building a running. My commit head(git show-ref --head) is at 1236568ee3cbb0d3ac62d0074a29b97ecf34cbbc HEAD 1236568ee3cbb0d3ac62d0074a29b97ecf34cbbc refs/heads/master 1236568ee3cbb0d3ac62d0074a29b97ecf34cbbc refs/remotes/origin/HEAD 1236568ee3cbb0d3ac62d0074a29b97ecf34cbbc refs/remotes/origin/master ... I also applied the patch https://patchwork.ozlabs.org/patch/949884/ (samples: bpf: convert xdpsock_user.c to libbpf ), as the error was initially in the form show below: "failed to create a map: 22 Invalid argument" "ERROR: load_bpf_file" Thanks Konrad
