SFQ_MAX_DEPTH
struct sfq_head dep[SFQ_MAX_DEPTH + 1];
maxdepth = min_t(u32, ctl_v1->depth, SFQ_MAX_DEPTH);
#define SFQ_MAX_FLOWS (0x10000 - SFQ_MAX_DEPTH - 1) /* max number of flows */
for (i = 0; i < SFQ_MAX_DEPTH + 1; i++) {
q->limit = SFQ_MAX_DEPTH;
q->maxdepth = SFQ_MAX_DEPTH;