xbpf_prog_attach
xbpf_prog_attach(t->progfd, mapfd, t->atype, 0) != 0)
err = xbpf_prog_attach(parser, sock_map, BPF_SK_SKB_STREAM_PARSER, 0);
err = xbpf_prog_attach(verdict, sock_map, BPF_SK_SKB_STREAM_VERDICT, 0);
err = xbpf_prog_attach(verdict, sock_map, BPF_SK_MSG_VERDICT, 0);
err = xbpf_prog_attach(parser, sock_map, BPF_SK_SKB_STREAM_PARSER, 0);
err = xbpf_prog_attach(verdict, sock_map, BPF_SK_SKB_STREAM_VERDICT, 0);
err = xbpf_prog_attach(verdict, sock_map, BPF_SK_MSG_VERDICT, 0);
err = xbpf_prog_attach(parser, sock_map, BPF_SK_SKB_STREAM_PARSER, 0);
err = xbpf_prog_attach(verdict, sock_map, BPF_SK_SKB_STREAM_VERDICT, 0);
if (xbpf_prog_attach(prog_fd, maps.in, attach_type, 0))