133 	struct sfq_slot *tail;		/* current slot in round */  member
318 		x = q->tail->next;  in sfq_drop()
320 		q->tail->next = slot->next;  in sfq_drop()
446 		if (q->tail == NULL) {	/* It is the first flow */  in sfq_enqueue()
449 			slot->next = q->tail->next;  in sfq_enqueue()
450 			q->tail->next = x;  in sfq_enqueue()
456 		q->tail = slot;  in sfq_enqueue()
485 	if (q->tail == NULL)  in sfq_dequeue()
489 	a = q->tail->next;  in sfq_dequeue()
492 		q->tail = slot;  in sfq_dequeue()
507 			q->tail = NULL; /* no more active slots */  in sfq_dequeue()
510 		q->tail->next = next_a;  in sfq_dequeue()
557 	q->tail = NULL;  in sfq_rehash()
588 			if (q->tail == NULL) {	/* It is the first flow */  in sfq_rehash()
591 				slot->next = q->tail->next;  in sfq_rehash()
592 				q->tail->next = x;  in sfq_rehash()
594 			q->tail = slot;  in sfq_rehash()
610 	if (!q->filter_list && q->tail)  in sfq_perturbation()
728 	q->tail = NULL;  in sfq_init()