#ifndef __NET_SCHED_GENERIC_H
  #define __NET_SCHED_GENERIC_H
  
  #include <linux/netdevice.h>
  #include <linux/types.h>
  #include <linux/rcupdate.h>
  #include <linux/pkt_sched.h>
  #include <linux/pkt_cls.h>
  #include <net/gen_stats.h>
  #include <net/rtnetlink.h>
  
  struct Qdisc_ops;
  struct qdisc_walker;
  struct tcf_walker;
  struct module;
  
  struct qdisc_rate_table {
  	struct tc_ratespec rate;
  	u32		data[256];
  	struct qdisc_rate_table *next;
  	int		refcnt;
  };
  
  enum qdisc_state_t {
  	__QDISC_STATE_SCHED,
  	__QDISC_STATE_DEACTIVATED,
  	__QDISC_STATE_THROTTLED,
  };
  
  /*
   * following bits are only changed while qdisc lock is held
   */
  enum qdisc___state_t {
  	__QDISC___STATE_RUNNING = 1,
  };
  
  struct qdisc_size_table {
  	struct rcu_head		rcu;
  	struct list_head	list;
  	struct tc_sizespec	szopts;
  	int			refcnt;
  	u16			data[];
  };
  
  struct Qdisc {
  	int 			(*enqueue)(struct sk_buff *skb, struct Qdisc *dev);
  	struct sk_buff *	(*dequeue)(struct Qdisc *dev);
  	unsigned int		flags;
  #define TCQ_F_BUILTIN		1
  #define TCQ_F_INGRESS		2
  #define TCQ_F_CAN_BYPASS	4
  #define TCQ_F_MQROOT		8
  #define TCQ_F_ONETXQUEUE	0x10 /* dequeue_skb() can assume all skbs are for
  				      * q->dev_queue : It can test
  				      * netif_xmit_frozen_or_stopped() before
  				      * dequeueing next packet.
  				      * Its true for MQ/MQPRIO slaves, or non
  				      * multiqueue device.
  				      */
  #define TCQ_F_WARN_NONWC	(1 << 16)
  	u32			limit;
  	const struct Qdisc_ops	*ops;
  	struct qdisc_size_table	__rcu *stab;
  	struct list_head	list;
  	u32			handle;
  	u32			parent;
  	int			(*reshape_fail)(struct sk_buff *skb,
  					struct Qdisc *q);
  
  	void			*u32_node;
  
  	/* This field is deprecated, but it is still used by CBQ
  	 * and it will live until better solution will be invented.
  	 */
  	struct Qdisc		*__parent;
  	struct netdev_queue	*dev_queue;
  
  	struct gnet_stats_rate_est64	rate_est;
  	struct Qdisc		*next_sched;
  	struct sk_buff		*gso_skb;
  	/*
  	 * For performance sake on SMP, we put highly modified fields at the end
  	 */
  	unsigned long		state;
  	struct sk_buff_head	q;
  	struct gnet_stats_basic_packed bstats;
  	unsigned int		__state;
  	struct gnet_stats_queue	qstats;
  	struct rcu_head		rcu_head;
  	int			padded;
  	atomic_t		refcnt;
  
  	spinlock_t		busylock ____cacheline_aligned_in_smp;
  };
  
  static inline bool qdisc_is_running(const struct Qdisc *qdisc)
  {
  	return (qdisc->__state & __QDISC___STATE_RUNNING) ? true : false;
  }
  
  static inline bool qdisc_run_begin(struct Qdisc *qdisc)
  {
  	if (qdisc_is_running(qdisc))
  		return false;
  	qdisc->__state |= __QDISC___STATE_RUNNING;
  	return true;
  }
  
  static inline void qdisc_run_end(struct Qdisc *qdisc)
  {
  	qdisc->__state &= ~__QDISC___STATE_RUNNING;
  }
  
  static inline bool qdisc_is_throttled(const struct Qdisc *qdisc)
  {
  	return test_bit(__QDISC_STATE_THROTTLED, &qdisc->state) ? true : false;
  }
  
  static inline void qdisc_throttled(struct Qdisc *qdisc)
  {
  	set_bit(__QDISC_STATE_THROTTLED, &qdisc->state);
  }
  
  static inline void qdisc_unthrottled(struct Qdisc *qdisc)
  {
  	clear_bit(__QDISC_STATE_THROTTLED, &qdisc->state);
  }
  
  struct Qdisc_class_ops {
  	/* Child qdisc manipulation */
  	struct netdev_queue *	(*select_queue)(struct Qdisc *, struct tcmsg *);
  	int			(*graft)(struct Qdisc *, unsigned long cl,
  					struct Qdisc *, struct Qdisc **);
  	struct Qdisc *		(*leaf)(struct Qdisc *, unsigned long cl);
  	void			(*qlen_notify)(struct Qdisc *, unsigned long);
  
  	/* Class manipulation routines */
  	unsigned long		(*get)(struct Qdisc *, u32 classid);
  	void			(*put)(struct Qdisc *, unsigned long);
  	int			(*change)(struct Qdisc *, u32, u32,
  					struct nlattr **, unsigned long *);
  	int			(*delete)(struct Qdisc *, unsigned long);
  	void			(*walk)(struct Qdisc *, struct qdisc_walker * arg);
  
  	/* Filter manipulation */
  	struct tcf_proto **	(*tcf_chain)(struct Qdisc *, unsigned long);
  	unsigned long		(*bind_tcf)(struct Qdisc *, unsigned long,
  					u32 classid);
  	void			(*unbind_tcf)(struct Qdisc *, unsigned long);
  
  	/* rtnetlink specific */
  	int			(*dump)(struct Qdisc *, unsigned long,
  					struct sk_buff *skb, struct tcmsg*);
  	int			(*dump_stats)(struct Qdisc *, unsigned long,
  					struct gnet_dump *);
  };
  
  struct Qdisc_ops {
  	struct Qdisc_ops	*next;
  	const struct Qdisc_class_ops	*cl_ops;
  	char			id[IFNAMSIZ];
  	int			priv_size;
  
  	int 			(*enqueue)(struct sk_buff *, struct Qdisc *);
  	struct sk_buff *	(*dequeue)(struct Qdisc *);
  	struct sk_buff *	(*peek)(struct Qdisc *);
  	unsigned int		(*drop)(struct Qdisc *);
  
  	int			(*init)(struct Qdisc *, struct nlattr *arg);
  	void			(*reset)(struct Qdisc *);
  	void			(*destroy)(struct Qdisc *);
  	int			(*change)(struct Qdisc *, struct nlattr *arg);
  	void			(*attach)(struct Qdisc *);
  
  	int			(*dump)(struct Qdisc *, struct sk_buff *);
  	int			(*dump_stats)(struct Qdisc *, struct gnet_dump *);
  
  	struct module		*owner;
  };
  
  
  struct tcf_result {
  	unsigned long	class;
  	u32		classid;
  };
  
  struct tcf_proto_ops {
  	struct list_head	head;
  	char			kind[IFNAMSIZ];
  
  	int			(*classify)(struct sk_buff *,
  					    const struct tcf_proto *,
  					    struct tcf_result *);
  	int			(*init)(struct tcf_proto*);
  	void			(*destroy)(struct tcf_proto*);
  
  	unsigned long		(*get)(struct tcf_proto*, u32 handle);
  	void			(*put)(struct tcf_proto*, unsigned long);
  	int			(*change)(struct net *net, struct sk_buff *,
  					struct tcf_proto*, unsigned long,
  					u32 handle, struct nlattr **,
  					unsigned long *);
  	int			(*delete)(struct tcf_proto*, unsigned long);
  	void			(*walk)(struct tcf_proto*, struct tcf_walker *arg);
  
  	/* rtnetlink specific */
  	int			(*dump)(struct net*, struct tcf_proto*, unsigned long,
  					struct sk_buff *skb, struct tcmsg*);
  
  	struct module		*owner;
  };
  
  struct tcf_proto {
  	/* Fast access part */
  	struct tcf_proto	*next;
  	void			*root;
  	int			(*classify)(struct sk_buff *,
  					    const struct tcf_proto *,
  					    struct tcf_result *);
  	__be16			protocol;
  
  	/* All the rest */
  	u32			prio;
  	u32			classid;
  	struct Qdisc		*q;
  	void			*data;
  	const struct tcf_proto_ops	*ops;
  };
  
  struct qdisc_skb_cb {
  	unsigned int		pkt_len;
  	u16			slave_dev_queue_mapping;
  	u16			_pad;
  	unsigned char		data[20];
  };
  
  static inline void qdisc_cb_private_validate(const struct sk_buff *skb, int sz)
  {
  	struct qdisc_skb_cb *qcb;
  
  	BUILD_BUG_ON(sizeof(skb->cb) < offsetof(struct qdisc_skb_cb, data) + sz);
  	BUILD_BUG_ON(sizeof(qcb->data) < sz);
  }
  
  static inline int qdisc_qlen(const struct Qdisc *q)
  {
  	return q->q.qlen;
  }
  
  static inline struct qdisc_skb_cb *qdisc_skb_cb(const struct sk_buff *skb)
  {
  	return (struct qdisc_skb_cb *)skb->cb;
  }
  
  static inline spinlock_t *qdisc_lock(struct Qdisc *qdisc)
  {
  	return &qdisc->q.lock;
  }
  
  static inline struct Qdisc *qdisc_root(const struct Qdisc *qdisc)
  {
  	return qdisc->dev_queue->qdisc;
  }
  
  static inline struct Qdisc *qdisc_root_sleeping(const struct Qdisc *qdisc)
  {
  	return qdisc->dev_queue->qdisc_sleeping;
  }
  
  /* The qdisc root lock is a mechanism by which to top level
   * of a qdisc tree can be locked from any qdisc node in the
   * forest.  This allows changing the configuration of some
   * aspect of the qdisc tree while blocking out asynchronous
   * qdisc access in the packet processing paths.
   *
   * It is only legal to do this when the root will not change
   * on us.  Otherwise we'll potentially lock the wrong qdisc
   * root.  This is enforced by holding the RTNL semaphore, which
   * all users of this lock accessor must do.
   */
  static inline spinlock_t *qdisc_root_lock(const struct Qdisc *qdisc)
  {
  	struct Qdisc *root = qdisc_root(qdisc);
  
  	ASSERT_RTNL();
  	return qdisc_lock(root);
  }
  
  static inline spinlock_t *qdisc_root_sleeping_lock(const struct Qdisc *qdisc)
  {
  	struct Qdisc *root = qdisc_root_sleeping(qdisc);
  
  	ASSERT_RTNL();
  	return qdisc_lock(root);
  }
  
  static inline struct net_device *qdisc_dev(const struct Qdisc *qdisc)
  {
  	return qdisc->dev_queue->dev;
  }
  
  static inline void sch_tree_lock(const struct Qdisc *q)
  {
  	spin_lock_bh(qdisc_root_sleeping_lock(q));
  }
  
  static inline void sch_tree_unlock(const struct Qdisc *q)
  {
  	spin_unlock_bh(qdisc_root_sleeping_lock(q));
  }
  
  #define tcf_tree_lock(tp)	sch_tree_lock((tp)->q)
  #define tcf_tree_unlock(tp)	sch_tree_unlock((tp)->q)
  
  extern struct Qdisc noop_qdisc;
  extern struct Qdisc_ops noop_qdisc_ops;
  extern struct Qdisc_ops pfifo_fast_ops;
  extern struct Qdisc_ops mq_qdisc_ops;
  extern const struct Qdisc_ops *default_qdisc_ops;
  
  struct Qdisc_class_common {
  	u32			classid;
  	struct hlist_node	hnode;
  };
  
  struct Qdisc_class_hash {
  	struct hlist_head	*hash;
  	unsigned int		hashsize;
  	unsigned int		hashmask;
  	unsigned int		hashelems;
  };
  
  static inline unsigned int qdisc_class_hash(u32 id, u32 mask)
  {
  	id ^= id >> 8;
  	id ^= id >> 4;
  	return id & mask;
  }
  
  static inline struct Qdisc_class_common *
  qdisc_class_find(const struct Qdisc_class_hash *hash, u32 id)
  {
  	struct Qdisc_class_common *cl;
  	unsigned int h;
  
  	h = qdisc_class_hash(id, hash->hashmask);
  	hlist_for_each_entry(cl, &hash->hash[h], hnode) {
  		if (cl->classid == id)
  			return cl;
  	}
  	return NULL;
  }
  
  int qdisc_class_hash_init(struct Qdisc_class_hash *);
  void qdisc_class_hash_insert(struct Qdisc_class_hash *,
  			     struct Qdisc_class_common *);
  void qdisc_class_hash_remove(struct Qdisc_class_hash *,
  			     struct Qdisc_class_common *);
  void qdisc_class_hash_grow(struct Qdisc *, struct Qdisc_class_hash *);
  void qdisc_class_hash_destroy(struct Qdisc_class_hash *);
  
  void dev_init_scheduler(struct net_device *dev);
  void dev_shutdown(struct net_device *dev);
  void dev_activate(struct net_device *dev);
  void dev_deactivate(struct net_device *dev);
  void dev_deactivate_many(struct list_head *head);
  struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
  			      struct Qdisc *qdisc);
  void qdisc_reset(struct Qdisc *qdisc);
  void qdisc_destroy(struct Qdisc *qdisc);
  void qdisc_tree_decrease_qlen(struct Qdisc *qdisc, unsigned int n);
  struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
  			  const struct Qdisc_ops *ops);
  struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue,
  				const struct Qdisc_ops *ops, u32 parentid);
  void __qdisc_calculate_pkt_len(struct sk_buff *skb,
  			       const struct qdisc_size_table *stab);
  void tcf_destroy(struct tcf_proto *tp);
  void tcf_destroy_chain(struct tcf_proto **fl);
  
  /* Reset all TX qdiscs greater then index of a device.  */
  static inline void qdisc_reset_all_tx_gt(struct net_device *dev, unsigned int i)
  {
  	struct Qdisc *qdisc;
  
  	for (; i < dev->num_tx_queues; i++) {
  		qdisc = netdev_get_tx_queue(dev, i)->qdisc;
  		if (qdisc) {
  			spin_lock_bh(qdisc_lock(qdisc));
  			qdisc_reset(qdisc);
  			spin_unlock_bh(qdisc_lock(qdisc));
  		}
  	}
  }
  
  static inline void qdisc_reset_all_tx(struct net_device *dev)
  {
  	qdisc_reset_all_tx_gt(dev, 0);
  }
  
  /* Are all TX queues of the device empty?  */
  static inline bool qdisc_all_tx_empty(const struct net_device *dev)
  {
  	unsigned int i;
  	for (i = 0; i < dev->num_tx_queues; i++) {
  		struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
  		const struct Qdisc *q = txq->qdisc;
  
  		if (q->q.qlen)
  			return false;
  	}
  	return true;
  }
  
  /* Are any of the TX qdiscs changing?  */
  static inline bool qdisc_tx_changing(const struct net_device *dev)
  {
  	unsigned int i;
  	for (i = 0; i < dev->num_tx_queues; i++) {
  		struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
  		if (txq->qdisc != txq->qdisc_sleeping)
  			return true;
  	}
  	return false;
  }
  
  /* Is the device using the noop qdisc on all queues?  */
  static inline bool qdisc_tx_is_noop(const struct net_device *dev)
  {
  	unsigned int i;
  	for (i = 0; i < dev->num_tx_queues; i++) {
  		struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
  		if (txq->qdisc != &noop_qdisc)
  			return false;
  	}
  	return true;
  }
  
  static inline unsigned int qdisc_pkt_len(const struct sk_buff *skb)
  {
  	return qdisc_skb_cb(skb)->pkt_len;
  }
  
  /* additional qdisc xmit flags (NET_XMIT_MASK in linux/netdevice.h) */
  enum net_xmit_qdisc_t {
  	__NET_XMIT_STOLEN = 0x00010000,
  	__NET_XMIT_BYPASS = 0x00020000,
  };
  
  #ifdef CONFIG_NET_CLS_ACT
  #define net_xmit_drop_count(e)	((e) & __NET_XMIT_STOLEN ? 0 : 1)
  #else
  #define net_xmit_drop_count(e)	(1)
  #endif
  
  static inline void qdisc_calculate_pkt_len(struct sk_buff *skb,
  					   const struct Qdisc *sch)
  {
  #ifdef CONFIG_NET_SCHED
  	struct qdisc_size_table *stab = rcu_dereference_bh(sch->stab);
  
  	if (stab)
  		__qdisc_calculate_pkt_len(skb, stab);
  #endif
  }
  
  static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
  {
  	qdisc_calculate_pkt_len(skb, sch);
  	return sch->enqueue(skb, sch);
  }
  
  static inline int qdisc_enqueue_root(struct sk_buff *skb, struct Qdisc *sch)
  {
  	qdisc_skb_cb(skb)->pkt_len = skb->len;
  	return qdisc_enqueue(skb, sch) & NET_XMIT_MASK;
  }
  
  
  static inline void bstats_update(struct gnet_stats_basic_packed *bstats,
  				 const struct sk_buff *skb)
  {
  	bstats->bytes += qdisc_pkt_len(skb);
  	bstats->packets += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
  }
  
  static inline void qdisc_bstats_update(struct Qdisc *sch,
  				       const struct sk_buff *skb)
  {
  	bstats_update(&sch->bstats, skb);
  }
  
  static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch,
  				       struct sk_buff_head *list)
  {
  	__skb_queue_tail(list, skb);
  	sch->qstats.backlog += qdisc_pkt_len(skb);
  
  	return NET_XMIT_SUCCESS;
  }
  
  static inline int qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch)
  {
  	return __qdisc_enqueue_tail(skb, sch, &sch->q);
  }
  
  static inline struct sk_buff *__qdisc_dequeue_head(struct Qdisc *sch,
  						   struct sk_buff_head *list)
  {
  	struct sk_buff *skb = __skb_dequeue(list);
  
  	if (likely(skb != NULL)) {
  		sch->qstats.backlog -= qdisc_pkt_len(skb);
  		qdisc_bstats_update(sch, skb);
  	}
  
  	return skb;
  }
  
  static inline struct sk_buff *qdisc_dequeue_head(struct Qdisc *sch)
  {
  	return __qdisc_dequeue_head(sch, &sch->q);
  }
  
  static inline unsigned int __qdisc_queue_drop_head(struct Qdisc *sch,
  					      struct sk_buff_head *list)
  {
  	struct sk_buff *skb = __skb_dequeue(list);
  
  	if (likely(skb != NULL)) {
  		unsigned int len = qdisc_pkt_len(skb);
  		sch->qstats.backlog -= len;
  		kfree_skb(skb);
  		return len;
  	}
  
  	return 0;
  }
  
  static inline unsigned int qdisc_queue_drop_head(struct Qdisc *sch)
  {
  	return __qdisc_queue_drop_head(sch, &sch->q);
  }
  
  static inline struct sk_buff *__qdisc_dequeue_tail(struct Qdisc *sch,
  						   struct sk_buff_head *list)
  {
  	struct sk_buff *skb = __skb_dequeue_tail(list);
  
  	if (likely(skb != NULL))
  		sch->qstats.backlog -= qdisc_pkt_len(skb);
  
  	return skb;
  }
  
  static inline struct sk_buff *qdisc_dequeue_tail(struct Qdisc *sch)
  {
  	return __qdisc_dequeue_tail(sch, &sch->q);
  }
  
  static inline struct sk_buff *qdisc_peek_head(struct Qdisc *sch)
  {
  	return skb_peek(&sch->q);
  }
  
  /* generic pseudo peek method for non-work-conserving qdisc */
  static inline struct sk_buff *qdisc_peek_dequeued(struct Qdisc *sch)
  {
  	/* we can reuse ->gso_skb because peek isn't called for root qdiscs */
  	if (!sch->gso_skb) {
  		sch->gso_skb = sch->dequeue(sch);
  		if (sch->gso_skb)
  			/* it's still part of the queue */
  			sch->q.qlen++;
  	}
  
  	return sch->gso_skb;
  }
  
  /* use instead of qdisc->dequeue() for all qdiscs queried with ->peek() */
  static inline struct sk_buff *qdisc_dequeue_peeked(struct Qdisc *sch)
  {
  	struct sk_buff *skb = sch->gso_skb;
  
  	if (skb) {
  		sch->gso_skb = NULL;
  		sch->q.qlen--;
  	} else {
  		skb = sch->dequeue(sch);
  	}
  
  	return skb;
  }
  
  static inline void __qdisc_reset_queue(struct Qdisc *sch,
  				       struct sk_buff_head *list)
  {
  	/*
  	 * We do not know the backlog in bytes of this list, it
  	 * is up to the caller to correct it
  	 */
  	__skb_queue_purge(list);
  }
  
  static inline void qdisc_reset_queue(struct Qdisc *sch)
  {
  	__qdisc_reset_queue(sch, &sch->q);
  	sch->qstats.backlog = 0;
  }
  
  static inline unsigned int __qdisc_queue_drop(struct Qdisc *sch,
  					      struct sk_buff_head *list)
  {
  	struct sk_buff *skb = __qdisc_dequeue_tail(sch, list);
  
  	if (likely(skb != NULL)) {
  		unsigned int len = qdisc_pkt_len(skb);
  		kfree_skb(skb);
  		return len;
  	}
  
  	return 0;
  }
  
  static inline unsigned int qdisc_queue_drop(struct Qdisc *sch)
  {
  	return __qdisc_queue_drop(sch, &sch->q);
  }
  
  static inline int qdisc_drop(struct sk_buff *skb, struct Qdisc *sch)
  {
  	kfree_skb(skb);
  	sch->qstats.drops++;
  
  	return NET_XMIT_DROP;
  }
  
  static inline int qdisc_reshape_fail(struct sk_buff *skb, struct Qdisc *sch)
  {
  	sch->qstats.drops++;
  
  #ifdef CONFIG_NET_CLS_ACT
  	if (sch->reshape_fail == NULL || sch->reshape_fail(skb, sch))
  		goto drop;
  
  	return NET_XMIT_SUCCESS;
  
  drop:
  #endif
  	kfree_skb(skb);
  	return NET_XMIT_DROP;
  }
  
  /* Length to Time (L2T) lookup in a qdisc_rate_table, to determine how
     long it will take to send a packet given its size.
   */
  static inline u32 qdisc_l2t(struct qdisc_rate_table* rtab, unsigned int pktlen)
  {
  	int slot = pktlen + rtab->rate.cell_align + rtab->rate.overhead;
  	if (slot < 0)
  		slot = 0;
  	slot >>= rtab->rate.cell_log;
  	if (slot > 255)
  		return rtab->data[255]*(slot >> 8) + rtab->data[slot & 0xFF];
  	return rtab->data[slot];
  }
  
  #ifdef CONFIG_NET_CLS_ACT
  static inline struct sk_buff *skb_act_clone(struct sk_buff *skb, gfp_t gfp_mask,
  					    int action)
  {
  	struct sk_buff *n;
  
  	n = skb_clone(skb, gfp_mask);
  
  	if (n) {
  		n->tc_verd = SET_TC_VERD(n->tc_verd, 0);
  		n->tc_verd = CLR_TC_OK2MUNGE(n->tc_verd);
  		n->tc_verd = CLR_TC_MUNGED(n->tc_verd);
  	}
  	return n;
  }
  #endif
  
  struct psched_ratecfg {
  	u64	rate_bytes_ps; /* bytes per second */
  	u32	mult;
  	u16	overhead;
  	u8	linklayer;
  	u8	shift;
  };
  
  static inline u64 psched_l2t_ns(const struct psched_ratecfg *r,
  				unsigned int len)
  {
  	len += r->overhead;
  
  	if (unlikely(r->linklayer == TC_LINKLAYER_ATM))
  		return ((u64)(DIV_ROUND_UP(len,48)*53) * r->mult) >> r->shift;
  
  	return ((u64)len * r->mult) >> r->shift;
  }
  
  void psched_ratecfg_precompute(struct psched_ratecfg *r,
  			       const struct tc_ratespec *conf,
  			       u64 rate64);
  
  static inline void psched_ratecfg_getrate(struct tc_ratespec *res,
  					  const struct psched_ratecfg *r)
  {
  	memset(res, 0, sizeof(*res));
  
  	/* legacy struct tc_ratespec has a 32bit @rate field
  	 * Qdisc using 64bit rate should add new attributes
  	 * in order to maintain compatibility.
  	 */
  	res->rate = min_t(u64, r->rate_bytes_ps, ~0U);
  
  	res->overhead = r->overhead;
  	res->linklayer = (r->linklayer & TC_LINKLAYER_MASK);
  }
  
  #endif