540 static int noop_enqueue(struct sk_buff *skb, struct Qdisc *qdisc,  in noop_enqueue()  argument
547 static struct sk_buff *noop_dequeue(struct Qdisc *qdisc)  in noop_dequeue()  argument
562 	.qdisc		=	&noop_qdisc,
578 static int noqueue_init(struct Qdisc *qdisc, struct nlattr *opt,  in noqueue_init()  argument
584 	qdisc->enqueue = NULL;  in noqueue_init()
622 static int pfifo_fast_enqueue(struct sk_buff *skb, struct Qdisc *qdisc,  in pfifo_fast_enqueue()  argument
626 	struct pfifo_fast_priv *priv = qdisc_priv(qdisc);  in pfifo_fast_enqueue()
634 		return qdisc_drop_cpu(skb, qdisc, to_free);  in pfifo_fast_enqueue()
636 	qdisc_qstats_cpu_qlen_inc(qdisc);  in pfifo_fast_enqueue()
640 	this_cpu_add(qdisc->cpu_qstats->backlog, pkt_len);  in pfifo_fast_enqueue()
644 static struct sk_buff *pfifo_fast_dequeue(struct Qdisc *qdisc)  in pfifo_fast_dequeue()  argument
646 	struct pfifo_fast_priv *priv = qdisc_priv(qdisc);  in pfifo_fast_dequeue()
659 		qdisc_qstats_cpu_backlog_dec(qdisc, skb);  in pfifo_fast_dequeue()
660 		qdisc_bstats_cpu_update(qdisc, skb);  in pfifo_fast_dequeue()
661 		qdisc_qstats_cpu_qlen_dec(qdisc);  in pfifo_fast_dequeue()
667 static struct sk_buff *pfifo_fast_peek(struct Qdisc *qdisc)  in pfifo_fast_peek()  argument
669 	struct pfifo_fast_priv *priv = qdisc_priv(qdisc);  in pfifo_fast_peek()
682 static void pfifo_fast_reset(struct Qdisc *qdisc)  in pfifo_fast_reset()  argument
685 	struct pfifo_fast_priv *priv = qdisc_priv(qdisc);  in pfifo_fast_reset()
702 		struct gnet_stats_queue *q = per_cpu_ptr(qdisc->cpu_qstats, i);  in pfifo_fast_reset()
709 static int pfifo_fast_dump(struct Qdisc *qdisc, struct sk_buff *skb)  in pfifo_fast_dump()  argument
722 static int pfifo_fast_init(struct Qdisc *qdisc, struct nlattr *opt,  in pfifo_fast_init()  argument
725 	unsigned int qlen = qdisc_dev(qdisc)->tx_queue_len;  in pfifo_fast_init()
726 	struct pfifo_fast_priv *priv = qdisc_priv(qdisc);  in pfifo_fast_init()
743 	qdisc->flags |= TCQ_F_CAN_BYPASS;  in pfifo_fast_init()
911 void qdisc_reset(struct Qdisc *qdisc)  in qdisc_reset()  argument
913 	const struct Qdisc_ops *ops = qdisc->ops;  in qdisc_reset()
917 		ops->reset(qdisc);  in qdisc_reset()
919 	skb_queue_walk_safe(&qdisc->gso_skb, skb, tmp) {  in qdisc_reset()
920 		__skb_unlink(skb, &qdisc->gso_skb);  in qdisc_reset()
924 	skb_queue_walk_safe(&qdisc->skb_bad_txq, skb, tmp) {  in qdisc_reset()
925 		__skb_unlink(skb, &qdisc->skb_bad_txq);  in qdisc_reset()
929 	qdisc->q.qlen = 0;  in qdisc_reset()
930 	qdisc->qstats.backlog = 0;  in qdisc_reset()
934 void qdisc_free(struct Qdisc *qdisc)  in qdisc_free()  argument
936 	if (qdisc_is_percpu_stats(qdisc)) {  in qdisc_free()
937 		free_percpu(qdisc->cpu_bstats);  in qdisc_free()
938 		free_percpu(qdisc->cpu_qstats);  in qdisc_free()
941 	kfree((char *) qdisc - qdisc->padded);  in qdisc_free()
944 void qdisc_destroy(struct Qdisc *qdisc)  in qdisc_destroy()  argument
946 	const struct Qdisc_ops  *ops = qdisc->ops;  in qdisc_destroy()
949 	if (qdisc->flags & TCQ_F_BUILTIN ||  in qdisc_destroy()
950 	    !refcount_dec_and_test(&qdisc->refcnt))  in qdisc_destroy()
954 	qdisc_hash_del(qdisc);  in qdisc_destroy()
956 	qdisc_put_stab(rtnl_dereference(qdisc->stab));  in qdisc_destroy()
958 	gen_kill_estimator(&qdisc->rate_est);  in qdisc_destroy()
960 		ops->reset(qdisc);  in qdisc_destroy()
962 		ops->destroy(qdisc);  in qdisc_destroy()
965 	dev_put(qdisc_dev(qdisc));  in qdisc_destroy()
967 	skb_queue_walk_safe(&qdisc->gso_skb, skb, tmp) {  in qdisc_destroy()
968 		__skb_unlink(skb, &qdisc->gso_skb);  in qdisc_destroy()
972 	skb_queue_walk_safe(&qdisc->skb_bad_txq, skb, tmp) {  in qdisc_destroy()
973 		__skb_unlink(skb, &qdisc->skb_bad_txq);  in qdisc_destroy()
977 	qdisc_free(qdisc);  in qdisc_destroy()
983 			      struct Qdisc *qdisc)  in dev_graft_qdisc()  argument
992 	if (qdisc == NULL)  in dev_graft_qdisc()
993 		qdisc = &noop_qdisc;  in dev_graft_qdisc()
994 	dev_queue->qdisc_sleeping = qdisc;  in dev_graft_qdisc()
995 	rcu_assign_pointer(dev_queue->qdisc, &noop_qdisc);  in dev_graft_qdisc()
1007 	struct Qdisc *qdisc;  in attach_one_default_qdisc()  local
1013 	qdisc = qdisc_create_dflt(dev_queue, ops, TC_H_ROOT, NULL);  in attach_one_default_qdisc()
1014 	if (!qdisc) {  in attach_one_default_qdisc()
1019 		qdisc->flags |= TCQ_F_ONETXQUEUE | TCQ_F_NOPARENT;  in attach_one_default_qdisc()
1020 	dev_queue->qdisc_sleeping = qdisc;  in attach_one_default_qdisc()
1026 	struct Qdisc *qdisc;  in attach_default_qdiscs()  local
1033 		dev->qdisc = txq->qdisc_sleeping;  in attach_default_qdiscs()
1034 		qdisc_refcount_inc(dev->qdisc);  in attach_default_qdiscs()
1036 		qdisc = qdisc_create_dflt(txq, &mq_qdisc_ops, TC_H_ROOT, NULL);  in attach_default_qdiscs()
1037 		if (qdisc) {  in attach_default_qdiscs()
1038 			dev->qdisc = qdisc;  in attach_default_qdiscs()
1039 			qdisc->ops->attach(qdisc);  in attach_default_qdiscs()
1043 	if (dev->qdisc != &noop_qdisc)  in attach_default_qdiscs()
1044 		qdisc_hash_add(dev->qdisc, false);  in attach_default_qdiscs()
1058 	rcu_assign_pointer(dev_queue->qdisc, new_qdisc);  in transition_one_qdisc()
1074 	if (dev->qdisc == &noop_qdisc)  in dev_activate()
1098 	struct Qdisc *qdisc;  in dev_deactivate_queue()  local
1100 	qdisc = rtnl_dereference(dev_queue->qdisc);  in dev_deactivate_queue()
1101 	if (qdisc) {  in dev_deactivate_queue()
1102 		bool nolock = qdisc->flags & TCQ_F_NOLOCK;  in dev_deactivate_queue()
1105 			spin_lock_bh(&qdisc->seqlock);  in dev_deactivate_queue()
1106 		spin_lock_bh(qdisc_lock(qdisc));  in dev_deactivate_queue()
1108 		if (!(qdisc->flags & TCQ_F_BUILTIN))  in dev_deactivate_queue()
1109 			set_bit(__QDISC_STATE_DEACTIVATED, &qdisc->state);  in dev_deactivate_queue()
1111 		rcu_assign_pointer(dev_queue->qdisc, qdisc_default);  in dev_deactivate_queue()
1112 		qdisc_reset(qdisc);  in dev_deactivate_queue()
1114 		spin_unlock_bh(qdisc_lock(qdisc));  in dev_deactivate_queue()
1116 			spin_unlock_bh(&qdisc->seqlock);  in dev_deactivate_queue()
1151 	struct Qdisc *qdisc = dev_queue->qdisc_sleeping;  in dev_qdisc_reset()  local
1153 	if (qdisc)  in dev_qdisc_reset()
1154 		qdisc_reset(qdisc);  in dev_qdisc_reset()
1210 	struct Qdisc *qdisc = dev_queue->qdisc_sleeping;  in qdisc_change_tx_queue_len()  local
1211 	const struct Qdisc_ops *ops = qdisc->ops;  in qdisc_change_tx_queue_len()
1214 		return ops->change_tx_queue_len(qdisc, dev->tx_queue_len);  in qdisc_change_tx_queue_len()
1244 	struct Qdisc *qdisc = _qdisc;  in dev_init_scheduler_queue()  local
1246 	rcu_assign_pointer(dev_queue->qdisc, qdisc);  in dev_init_scheduler_queue()
1247 	dev_queue->qdisc_sleeping = qdisc;  in dev_init_scheduler_queue()
1248 	__skb_queue_head_init(&qdisc->gso_skb);  in dev_init_scheduler_queue()
1249 	__skb_queue_head_init(&qdisc->skb_bad_txq);  in dev_init_scheduler_queue()
1254 	dev->qdisc = &noop_qdisc;  in dev_init_scheduler()
1266 	struct Qdisc *qdisc = dev_queue->qdisc_sleeping;  in shutdown_scheduler_queue()  local
1269 	if (qdisc) {  in shutdown_scheduler_queue()
1270 		rcu_assign_pointer(dev_queue->qdisc, qdisc_default);  in shutdown_scheduler_queue()
1273 		qdisc_destroy(qdisc);  in shutdown_scheduler_queue()
1282 	qdisc_destroy(dev->qdisc);  in dev_shutdown()
1283 	dev->qdisc = &noop_qdisc;  in dev_shutdown()
1361 void mini_qdisc_pair_init(struct mini_Qdisc_pair *miniqp, struct Qdisc *qdisc,  in mini_qdisc_pair_init()  argument
1364 	miniqp->miniq1.cpu_bstats = qdisc->cpu_bstats;  in mini_qdisc_pair_init()
1365 	miniqp->miniq1.cpu_qstats = qdisc->cpu_qstats;  in mini_qdisc_pair_init()
1366 	miniqp->miniq2.cpu_bstats = qdisc->cpu_bstats;  in mini_qdisc_pair_init()
1367 	miniqp->miniq2.cpu_qstats = qdisc->cpu_qstats;  in mini_qdisc_pair_init()