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