TCA_SAMPLE_TRUNC_SIZE
if (tb[TCA_SAMPLE_TRUNC_SIZE]) {
s->trunc_size = nla_get_u32(tb[TCA_SAMPLE_TRUNC_SIZE]);
if (nla_put_u32(skb, TCA_SAMPLE_TRUNC_SIZE, s->trunc_size))
[TCA_SAMPLE_TRUNC_SIZE] = { .type = NLA_U32 },