bpfprog_fd 74 samples/bpf/hbm.c int bpfprog_fd; bpfprog_fd 138 samples/bpf/hbm.c if (bpf_prog_load_xattr(&prog_load_attr, &obj, &bpfprog_fd)) bpfprog_fd 200 samples/bpf/hbm.c if (bpf_prog_attach(bpfprog_fd, cg1, type, 0)) {