SKB_TRACE_FMT
SKB_TRACE_FMT(skb, "qmap %u", skb->qmap);
SKB_TRACE_FMT(new, "prev %p next %p q %p", prev, next, q);
SKB_TRACE_FMT(q, "skb %p new %p", skb, new);
SKB_TRACE_FMT(q, "skb %p new %p", skb, new);
SKB_TRACE_FMT(skb, "qmap %u", qmap);
SKB_TRACE_FMT(skb, "data %p size %zu", (skb) ? skb->data : NULL, size);
SKB_TRACE_FMT(skb, "data %p size %zu len %zu",