TCA_BPF_OPS_LEN
bpf_num_ops = nla_get_u16(tb[TCA_BPF_OPS_LEN]);
is_bpf = tb[TCA_BPF_OPS_LEN] && tb[TCA_BPF_OPS];
if (nla_put_u16(skb, TCA_BPF_OPS_LEN, prog->bpf_num_ops))
[TCA_BPF_OPS_LEN] = { .type = NLA_U16 },