Lines Matching refs:head
443 #define IDXDIFF(head, tail, wrap) \
444 ((head) >= (tail) ? (head) - (tail) : (wrap) - (tail) + (head))
613 * XXX need to ensure that this can't accidentally cause the head to be moved backwards
917 * pointer to overrun the head/cons pointer, although this is
1024 u_int const head = kring->rhead;
1045 * If we have packets to send (nm_i != head)
1063 if (nm_i != head) { /* we have new packets to send */
1075 for (n = 0; nm_i != head; n++) {
1307 * (kring->nr_hwcur to head excluded),