LWT_BPF_OUT
[LWT_BPF_OUT] = { .type = NLA_NESTED, },
if (!tb[LWT_BPF_IN] && !tb[LWT_BPF_OUT] && !tb[LWT_BPF_XMIT])
if (tb[LWT_BPF_OUT]) {
ret = bpf_parse_prog(tb[LWT_BPF_OUT], &bpf->out,
bpf_fill_lwt_prog(skb, LWT_BPF_OUT, &bpf->out) < 0 ||