redirect_err_cnt_map_fd 45 samples/bpf/xdp_redirect_cpu_user.c static int redirect_err_cnt_map_fd; redirect_err_cnt_map_fd 474 samples/bpf/xdp_redirect_cpu_user.c fd = redirect_err_cnt_map_fd; redirect_err_cnt_map_fd 641 samples/bpf/xdp_redirect_cpu_user.c redirect_err_cnt_map_fd = redirect_err_cnt_map_fd 660 samples/bpf/xdp_redirect_cpu_user.c redirect_err_cnt_map_fd < 0 || cpumap_enqueue_cnt_map_fd < 0 ||