FM / net

/usr/src/linux-headers-5.15.0-181/include/net/

/usr/src/linux-headers-5.15.0-181/include/net

Name	Size	Mode	Actions
9p/	-	0755	rm
bluetooth/	-	0755	rm
caif/	-	0755	rm
iucv/	-	0755	rm
netfilter/	-	0755	rm
netns/	-	0755	rm
nfc/	-	0755	rm
phonet/	-	0755	rm
sctp/	-	0755	rm
tc_act/	-	0755	rm
6lowpan.h	10270	0644	edit dl rm
act_api.h	8647	0644	edit dl rm
addrconf.h	14594	0644	edit dl rm
af_ieee802154.h	1220	0644	edit dl rm
af_rxrpc.h	2798	0644	edit dl rm
af_unix.h	3375	0644	edit dl rm
af_vsock.h	7592	0644	edit dl rm
ah.h	382	0644	edit dl rm
arp.h	2141	0644	edit dl rm
atmclip.h	1515	0644	edit dl rm
ax25.h	15443	0644	edit dl rm
ax88796.h	1440	0644	edit dl rm
bareudp.h	572	0644	edit dl rm
bonding.h	20263	0644	edit dl rm
bond_3ad.h	9706	0644	edit dl rm
bond_alb.h	6251	0644	edit dl rm
bond_options.h	3876	0644	edit dl rm
bpf_sk_storage.h	1780	0644	edit dl rm
busy_poll.h	3959	0644	edit dl rm
calipso.h	1590	0644	edit dl rm
cfg80211-wext.h	1854	0644	edit dl rm
cfg80211.h	301317	0644	edit dl rm
cfg802154.h	10779	0644	edit dl rm
checksum.h	4869	0644	edit dl rm
cipso_ipv4.h	7548	0644	edit dl rm
cls_cgroup.h	2086	0644	edit dl rm
codel.h	5782	0644	edit dl rm
codel_impl.h	8167	0644	edit dl rm
codel_qdisc.h	2973	0644	edit dl rm
compat.h	2586	0644	edit dl rm
datalink.h	619	0644	edit dl rm
dcbevent.h	742	0644	edit dl rm
dcbnl.h	4317	0644	edit dl rm
devlink.h	63593	0644	edit dl rm
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dsfield.h	1147	0644	edit dl rm
dst.h	15153	0644	edit dl rm
dst_cache.h	3031	0644	edit dl rm
dst_metadata.h	5521	0644	edit dl rm
dst_ops.h	2125	0644	edit dl rm
erspan.h	9180	0644	edit dl rm
esp.h	1190	0644	edit dl rm
espintcp.h	966	0644	edit dl rm
ethoc.h	391	0644	edit dl rm
failover.h	1178	0644	edit dl rm
fib_notifier.h	1384	0644	edit dl rm
fib_rules.h	6450	0644	edit dl rm
firewire.h	636	0644	edit dl rm
flow.h	5119	0644	edit dl rm
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flow_offload.h	15938	0644	edit dl rm
fou.h	549	0644	edit dl rm
fq.h	2528	0644	edit dl rm
fq_impl.h	8076	0644	edit dl rm
garp.h	2678	0644	edit dl rm
genetlink.h	13854	0644	edit dl rm
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gen_stats.h	2889	0644	edit dl rm
gre.h	3369	0644	edit dl rm
gro.h	783	0644	edit dl rm
gro_cells.h	443	0644	edit dl rm
gtp.h	633	0644	edit dl rm
gue.h	3313	0644	edit dl rm
hwbm.h	969	0644	edit dl rm
icmp.h	1918	0644	edit dl rm
ieee80211_radiotap.h	13518	0644	edit dl rm
ieee802154_netdev.h	10095	0644	edit dl rm
ife.h	1057	0644	edit dl rm
if_inet6.h	6692	0644	edit dl rm
ila.h	291	0644	edit dl rm
inet6_connection_sock.h	765	0644	edit dl rm
inet6_hashtables.h	4259	0644	edit dl rm
inetpeer.h	3372	0644	edit dl rm
inet_common.h	2614	0644	edit dl rm
inet_connection_sock.h	11519	0644	edit dl rm
inet_ecn.h	7625	0644	edit dl rm
inet_frag.h	5046	0644	edit dl rm
inet_hashtables.h	12532	0644	edit dl rm
inet_sock.h	9994	0644	edit dl rm
inet_timewait_sock.h	3735	0644	edit dl rm
ioam6.h	1199	0644	edit dl rm
ip.h	22759	0644	edit dl rm
ip6_checksum.h	2770	0644	edit dl rm
ip6_fib.h	16280	0644	edit dl rm
ip6_route.h	10230	0644	edit dl rm
ip6_tunnel.h	5096	0644	edit dl rm
ipcomp.h	659	0644	edit dl rm
ipconfig.h	811	0644	edit dl rm
ipv6.h	36182	0644	edit dl rm
ipv6_frag.h	3361	0644	edit dl rm
ipv6_stubs.h	3482	0644	edit dl rm
ip_fib.h	16346	0644	edit dl rm
ip_tunnels.h	15949	0644	edit dl rm
ip_vs.h	50588	0644	edit dl rm
iw_handler.h	21413	0644	edit dl rm
kcm.h	4961	0644	edit dl rm
l3mdev.h	7202	0644	edit dl rm
lag.h	409	0644	edit dl rm
lapb.h	4938	0644	edit dl rm
lib80211.h	4017	0644	edit dl rm
llc.h	4514	0644	edit dl rm
llc_conn.h	4155	0644	edit dl rm
llc_c_ac.h	9537	0644	edit dl rm
llc_c_ev.h	10940	0644	edit dl rm
llc_c_st.h	1762	0644	edit dl rm
llc_if.h	2210	0644	edit dl rm
llc_pdu.h	14697	0644	edit dl rm
llc_sap.h	1108	0644	edit dl rm
llc_s_ac.h	1591	0644	edit dl rm
llc_s_ev.h	2255	0644	edit dl rm
llc_s_st.h	947	0644	edit dl rm
lwtunnel.h	6806	0644	edit dl rm
mac80211.h	273972	0644	edit dl rm
mac802154.h	15235	0644	edit dl rm
macsec.h	7084	0644	edit dl rm
mctp.h	6155	0644	edit dl rm
mctpdevice.h	841	0644	edit dl rm
mip6.h	1016	0644	edit dl rm
mld.h	2918	0644	edit dl rm
mpls.h	943	0644	edit dl rm
mpls_iptunnel.h	429	0644	edit dl rm
mptcp.h	6776	0644	edit dl rm
mrp.h	3119	0644	edit dl rm
ncsi.h	1964	0644	edit dl rm
ndisc.h	15150	0644	edit dl rm
neighbour.h	16099	0644	edit dl rm
netevent.h	1044	0644	edit dl rm
netlabel.h	20676	0644	edit dl rm
netlink.h	61656	0644	edit dl rm
netprio_cgroup.h	1047	0644	edit dl rm
netrom.h	7895	0644	edit dl rm
net_failover.h	1023	0644	edit dl rm
net_namespace.h	12795	0644	edit dl rm
net_ratelimit.h	220	0644	edit dl rm
nexthop.h	12565	0644	edit dl rm
nl802154.h	12384	0644	edit dl rm
nsh.h	12602	0644	edit dl rm
p8022.h	447	0644	edit dl rm
page_pool.h	8646	0644	edit dl rm
pie.h	3684	0644	edit dl rm
ping.h	2970	0644	edit dl rm
pkt_cls.h	24431	0644	edit dl rm
pkt_sched.h	6042	0644	edit dl rm
pptp.h	557	0644	edit dl rm
protocol.h	3900	0644	edit dl rm
psample.h	1083	0644	edit dl rm
psnap.h	351	0644	edit dl rm
raw.h	2136	0644	edit dl rm
rawv6.h	854	0644	edit dl rm
red.h	11654	0644	edit dl rm
regulatory.h	10901	0644	edit dl rm
request_sock.h	6660	0644	edit dl rm
rose.h	7802	0644	edit dl rm
route.h	11582	0644	edit dl rm
rpl.h	839	0644	edit dl rm
rsi_91x.h	1710	0644	edit dl rm
rtnetlink.h	7638	0644	edit dl rm
rtnh.h	859	0644	edit dl rm
sch_generic.h	34720	0644	edit dl rm
scm.h	3877	0644	edit dl rm
secure_seq.h	855	0644	edit dl rm
seg6.h	2237	0644	edit dl rm
seg6_hmac.h	1473	0644	edit dl rm
seg6_local.h	644	0644	edit dl rm
selftests.h	582	0644	edit dl rm
slhc_vj.h	6831	0644	edit dl rm
smc.h	2513	0644	edit dl rm
snmp.h	5268	0644	edit dl rm
sock.h	86351	0644	edit dl rm
sock_reuseport.h	1873	0644	edit dl rm
Space.h	737	0644	edit dl rm
stp.h	383	0644	edit dl rm
strparser.h	4250	0644	edit dl rm
switchdev.h	14614	0644	edit dl rm
tcp.h	75246	0644	edit dl rm
tcp_states.h	1225	0644	edit dl rm
timewait_sock.h	925	0644	edit dl rm
tipc.h	2405	0644	edit dl rm
tls.h	21465	0644	edit dl rm
tls_toe.h	3006	0644	edit dl rm
transp_v6.h	1996	0644	edit dl rm
tso.h	566	0644	edit dl rm
tun_proto.h	988	0644	edit dl rm
udp.h	17035	0644	edit dl rm
udplite.h	3762	0644	edit dl rm
udp_tunnel.h	12201	0644	edit dl rm
vsock_addr.h	662	0644	edit dl rm
vxlan.h	14424	0644	edit dl rm
wext.h	1510	0644	edit dl rm
x25.h	9718	0644	edit dl rm
x25device.h	387	0644	edit dl rm
xdp.h	8829	0644	edit dl rm
xdp_priv.h	446	0644	edit dl rm
xdp_sock.h	2094	0644	edit dl rm
xdp_sock_drv.h	5607	0644	edit dl rm
xfrm.h	56304	0644	edit dl rm
xsk_buff_pool.h	5138	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/include/net/sch_generic.h (34720B)

/* SPDX-License-Identifier: GPL-2.0 */
#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 <linux/percpu.h>
#include <linux/dynamic_queue_limits.h>
#include <linux/list.h>
#include <linux/refcount.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <linux/rwsem.h>
#include <linux/atomic.h>
#include <linux/hashtable.h>
#include <net/gen_stats.h>
#include <net/rtnetlink.h>
#include <net/flow_offload.h>

struct Qdisc_ops;
struct qdisc_walker;
struct tcf_walker;
struct module;
struct bpf_flow_keys;

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_MISSED,
	__QDISC_STATE_DRAINING,
};

#define QDISC_STATE_MISSED	BIT(__QDISC_STATE_MISSED)
#define QDISC_STATE_DRAINING	BIT(__QDISC_STATE_DRAINING)

#define QDISC_STATE_NON_EMPTY	(QDISC_STATE_MISSED | \
					QDISC_STATE_DRAINING)

struct qdisc_size_table {
	struct rcu_head		rcu;
	struct list_head	list;
	struct tc_sizespec	szopts;
	int			refcnt;
	u16			data[];
};

/* similar to sk_buff_head, but skb->prev pointer is undefined. */
struct qdisc_skb_head {
	struct sk_buff	*head;
	struct sk_buff	*tail;
	__u32		qlen;
	spinlock_t	lock;
};

struct Qdisc {
	int 			(*enqueue)(struct sk_buff *skb,
					   struct Qdisc *sch,
					   struct sk_buff **to_free);
	struct sk_buff *	(*dequeue)(struct Qdisc *sch);
	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)
#define TCQ_F_CPUSTATS		0x20 /* run using percpu statistics */
#define TCQ_F_NOPARENT		0x40 /* root of its hierarchy :
				      * qdisc_tree_decrease_qlen() should stop.
				      */
#define TCQ_F_INVISIBLE		0x80 /* invisible by default in dump */
#define TCQ_F_NOLOCK		0x100 /* qdisc does not require locking */
#define TCQ_F_OFFLOADED		0x200 /* qdisc is offloaded to HW */
	u32			limit;
	const struct Qdisc_ops	*ops;
	struct qdisc_size_table	__rcu *stab;
	struct hlist_node       hash;
	u32			handle;
	u32			parent;

struct netdev_queue	*dev_queue;

struct net_rate_estimator __rcu *rate_est;
	struct gnet_stats_basic_cpu __percpu *cpu_bstats;
	struct gnet_stats_queue	__percpu *cpu_qstats;
	int			pad;
	refcount_t		refcnt;

/*
	 * For performance sake on SMP, we put highly modified fields at the end
	 */
	struct sk_buff_head	gso_skb ____cacheline_aligned_in_smp;
	struct qdisc_skb_head	q;
	struct gnet_stats_basic_packed bstats;
	seqcount_t		running;
	struct gnet_stats_queue	qstats;
	unsigned long		state;
	struct Qdisc            *next_sched;
	struct sk_buff_head	skb_bad_txq;

spinlock_t		busylock ____cacheline_aligned_in_smp;
	spinlock_t		seqlock;

struct rcu_head		rcu;

/* private data */
	long privdata[] ____cacheline_aligned;
};

static inline void qdisc_refcount_inc(struct Qdisc *qdisc)
{
	if (qdisc->flags & TCQ_F_BUILTIN)
		return;
	refcount_inc(&qdisc->refcnt);
}

/* Intended to be used by unlocked users, when concurrent qdisc release is
 * possible.
 */

static inline struct Qdisc *qdisc_refcount_inc_nz(struct Qdisc *qdisc)
{
	if (qdisc->flags & TCQ_F_BUILTIN)
		return qdisc;
	if (refcount_inc_not_zero(&qdisc->refcnt))
		return qdisc;
	return NULL;
}

static inline bool qdisc_is_running(struct Qdisc *qdisc)
{
	if (qdisc->flags & TCQ_F_NOLOCK)
		return spin_is_locked(&qdisc->seqlock);
	return (raw_read_seqcount(&qdisc->running) & 1) ? true : false;
}

static inline bool nolock_qdisc_is_empty(const struct Qdisc *qdisc)
{
	return !(READ_ONCE(qdisc->state) & QDISC_STATE_NON_EMPTY);
}

static inline bool qdisc_is_percpu_stats(const struct Qdisc *q)
{
	return q->flags & TCQ_F_CPUSTATS;
}

static inline bool qdisc_is_empty(const struct Qdisc *qdisc)
{
	if (qdisc_is_percpu_stats(qdisc))
		return nolock_qdisc_is_empty(qdisc);
	return !READ_ONCE(qdisc->q.qlen);
}

static inline bool qdisc_run_begin(struct Qdisc *qdisc)
{
	if (qdisc->flags & TCQ_F_NOLOCK) {
		if (spin_trylock(&qdisc->seqlock))
			return true;

/* No need to insist if the MISSED flag was already set.
		 * Note that test_and_set_bit() also gives us memory ordering
		 * guarantees wrt potential earlier enqueue() and below
		 * spin_trylock(), both of which are necessary to prevent races
		 */
		if (test_and_set_bit(__QDISC_STATE_MISSED, &qdisc->state))
			return false;

/* Try to take the lock again to make sure that we will either
		 * grab it or the CPU that still has it will see MISSED set
		 * when testing it in qdisc_run_end()
		 */
		return spin_trylock(&qdisc->seqlock);
	} else if (qdisc_is_running(qdisc)) {
		return false;
	}
	/* Variant of write_seqcount_begin() telling lockdep a trylock
	 * was attempted.
	 */
	raw_write_seqcount_begin(&qdisc->running);
	seqcount_acquire(&qdisc->running.dep_map, 0, 1, _RET_IP_);
	return true;
}

static inline void qdisc_run_end(struct Qdisc *qdisc)
{
	if (qdisc->flags & TCQ_F_NOLOCK) {
		spin_unlock(&qdisc->seqlock);

/* spin_unlock() only has store-release semantic. The unlock
		 * and test_bit() ordering is a store-load ordering, so a full
		 * memory barrier is needed here.
		 */
		smp_mb();

if (unlikely(test_bit(__QDISC_STATE_MISSED,
				      &qdisc->state)))
			__netif_schedule(qdisc);
	} else {
		write_seqcount_end(&qdisc->running);
	}
}

static inline bool qdisc_may_bulk(const struct Qdisc *qdisc)
{
	return qdisc->flags & TCQ_F_ONETXQUEUE;
}

static inline int qdisc_avail_bulklimit(const struct netdev_queue *txq)
{
#ifdef CONFIG_BQL
	/* Non-BQL migrated drivers will return 0, too. */
	return dql_avail(&txq->dql);
#else
	return 0;
#endif
}

struct Qdisc_class_ops {
	unsigned int		flags;
	/* Child qdisc manipulation */
	struct netdev_queue *	(*select_queue)(struct Qdisc *, struct tcmsg *);
	int			(*graft)(struct Qdisc *, unsigned long cl,
					struct Qdisc *, struct Qdisc **,
					struct netlink_ext_ack *extack);
	struct Qdisc *		(*leaf)(struct Qdisc *, unsigned long cl);
	void			(*qlen_notify)(struct Qdisc *, unsigned long);

/* Class manipulation routines */
	unsigned long		(*find)(struct Qdisc *, u32 classid);
	int			(*change)(struct Qdisc *, u32, u32,
					struct nlattr **, unsigned long *,
					struct netlink_ext_ack *);
	int			(*delete)(struct Qdisc *, unsigned long,
					  struct netlink_ext_ack *);
	void			(*walk)(struct Qdisc *, struct qdisc_walker * arg);

/* Filter manipulation */
	struct tcf_block *	(*tcf_block)(struct Qdisc *sch,
					     unsigned long arg,
					     struct netlink_ext_ack *extack);
	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 *);
};

/* Qdisc_class_ops flag values */

/* Implements API that doesn't require rtnl lock */
enum qdisc_class_ops_flags {
	QDISC_CLASS_OPS_DOIT_UNLOCKED = 1,
};

struct Qdisc_ops {
	struct Qdisc_ops	*next;
	const struct Qdisc_class_ops	*cl_ops;
	char			id[IFNAMSIZ];
	int			priv_size;
	unsigned int		static_flags;

int 			(*enqueue)(struct sk_buff *skb,
					   struct Qdisc *sch,
					   struct sk_buff **to_free);
	struct sk_buff *	(*dequeue)(struct Qdisc *);
	struct sk_buff *	(*peek)(struct Qdisc *);

int			(*init)(struct Qdisc *sch, struct nlattr *arg,
					struct netlink_ext_ack *extack);
	void			(*reset)(struct Qdisc *);
	void			(*destroy)(struct Qdisc *);
	int			(*change)(struct Qdisc *sch,
					  struct nlattr *arg,
					  struct netlink_ext_ack *extack);
	void			(*attach)(struct Qdisc *sch);
	int			(*change_tx_queue_len)(struct Qdisc *, unsigned int);
	void			(*change_real_num_tx)(struct Qdisc *sch,
						      unsigned int new_real_tx);

int			(*dump)(struct Qdisc *, struct sk_buff *);
	int			(*dump_stats)(struct Qdisc *, struct gnet_dump *);

void			(*ingress_block_set)(struct Qdisc *sch,
						     u32 block_index);
	void			(*egress_block_set)(struct Qdisc *sch,
						    u32 block_index);
	u32			(*ingress_block_get)(struct Qdisc *sch);
	u32			(*egress_block_get)(struct Qdisc *sch);

struct module		*owner;
};

struct tcf_result {
	union {
		struct {
			unsigned long	class;
			u32		classid;
		};
		const struct tcf_proto *goto_tp;

/* used in the skb_tc_reinsert function */
		struct {
			bool		ingress;
			struct gnet_stats_queue *qstats;
		};
	};
};

struct tcf_chain;

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 *tp, bool rtnl_held,
					   struct netlink_ext_ack *extack);

void*			(*get)(struct tcf_proto*, u32 handle);
	void			(*put)(struct tcf_proto *tp, void *f);
	int			(*change)(struct net *net, struct sk_buff *,
					struct tcf_proto*, unsigned long,
					u32 handle, struct nlattr **,
					void **, u32,
					struct netlink_ext_ack *);
	int			(*delete)(struct tcf_proto *tp, void *arg,
					  bool *last, bool rtnl_held,
					  struct netlink_ext_ack *);
	bool			(*delete_empty)(struct tcf_proto *tp);
	void			(*walk)(struct tcf_proto *tp,
					struct tcf_walker *arg, bool rtnl_held);
	int			(*reoffload)(struct tcf_proto *tp, bool add,
					     flow_setup_cb_t *cb, void *cb_priv,
					     struct netlink_ext_ack *extack);
	void			(*hw_add)(struct tcf_proto *tp,
					  void *type_data);
	void			(*hw_del)(struct tcf_proto *tp,
					  void *type_data);
	void			(*bind_class)(void *, u32, unsigned long,
					      void *, unsigned long);
	void *			(*tmplt_create)(struct net *net,
						struct tcf_chain *chain,
						struct nlattr **tca,
						struct netlink_ext_ack *extack);
	void			(*tmplt_destroy)(void *tmplt_priv);
	void			(*tmplt_reoffload)(struct tcf_chain *chain,
						   bool add,
						   flow_setup_cb_t *cb,
						   void *cb_priv);
	/* rtnetlink specific */
	int			(*dump)(struct net*, struct tcf_proto*, void *,
					struct sk_buff *skb, struct tcmsg*,
					bool);
	int			(*terse_dump)(struct net *net,
					      struct tcf_proto *tp, void *fh,
					      struct sk_buff *skb,
					      struct tcmsg *t, bool rtnl_held);
	int			(*tmplt_dump)(struct sk_buff *skb,
					      struct net *net,
					      void *tmplt_priv);

struct module		*owner;
	int			flags;
};

/* Classifiers setting TCF_PROTO_OPS_DOIT_UNLOCKED in tcf_proto_ops->flags
 * are expected to implement tcf_proto_ops->delete_empty(), otherwise race
 * conditions can occur when filters are inserted/deleted simultaneously.
 */
enum tcf_proto_ops_flags {
	TCF_PROTO_OPS_DOIT_UNLOCKED = 1,
};

struct tcf_proto {
	/* Fast access part */
	struct tcf_proto __rcu	*next;
	void __rcu		*root;

/* called under RCU BH lock*/
	int			(*classify)(struct sk_buff *,
					    const struct tcf_proto *,
					    struct tcf_result *);
	__be16			protocol;

/* All the rest */
	u32			prio;
	void			*data;
	const struct tcf_proto_ops	*ops;
	struct tcf_chain	*chain;
	/* Lock protects tcf_proto shared state and can be used by unlocked
	 * classifiers to protect their private data.
	 */
	spinlock_t		lock;
	bool			deleting;
	refcount_t		refcnt;
	struct rcu_head		rcu;
	struct hlist_node	destroy_ht_node;
};

struct qdisc_skb_cb {
	struct {
		unsigned int		pkt_len;
		u16			slave_dev_queue_mapping;
		u16			tc_classid;
	};
#define QDISC_CB_PRIV_LEN 20
	unsigned char		data[QDISC_CB_PRIV_LEN];
};

typedef void tcf_chain_head_change_t(struct tcf_proto *tp_head, void *priv);

struct tcf_chain {
	/* Protects filter_chain. */
	struct mutex filter_chain_lock;
	struct tcf_proto __rcu *filter_chain;
	struct list_head list;
	struct tcf_block *block;
	u32 index; /* chain index */
	unsigned int refcnt;
	unsigned int action_refcnt;
	bool explicitly_created;
	bool flushing;
	const struct tcf_proto_ops *tmplt_ops;
	void *tmplt_priv;
	struct rcu_head rcu;
};

struct tcf_block {
	/* Lock protects tcf_block and lifetime-management data of chains
	 * attached to the block (refcnt, action_refcnt, explicitly_created).
	 */
	struct mutex lock;
	struct list_head chain_list;
	u32 index; /* block index for shared blocks */
	u32 classid; /* which class this block belongs to */
	refcount_t refcnt;
	struct net *net;
	struct Qdisc *q;
	struct rw_semaphore cb_lock; /* protects cb_list and offload counters */
	struct flow_block flow_block;
	struct list_head owner_list;
	bool keep_dst;
	atomic_t offloadcnt; /* Number of oddloaded filters */
	unsigned int nooffloaddevcnt; /* Number of devs unable to do offload */
	unsigned int lockeddevcnt; /* Number of devs that require rtnl lock. */
	struct {
		struct tcf_chain *chain;
		struct list_head filter_chain_list;
	} chain0;
	struct rcu_head rcu;
	DECLARE_HASHTABLE(proto_destroy_ht, 7);
	struct mutex proto_destroy_lock; /* Lock for proto_destroy hashtable. */
};

static inline bool lockdep_tcf_chain_is_locked(struct tcf_chain *chain)
{
	return lockdep_is_held(&chain->filter_chain_lock);
}

static inline bool lockdep_tcf_proto_is_locked(struct tcf_proto *tp)
{
	return lockdep_is_held(&tp->lock);
}

#define tcf_chain_dereference(p, chain)					\
	rcu_dereference_protected(p, lockdep_tcf_chain_is_locked(chain))

#define tcf_proto_dereference(p, tp)					\
	rcu_dereference_protected(p, lockdep_tcf_proto_is_locked(tp))

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) < sizeof(*qcb));
	BUILD_BUG_ON(sizeof(qcb->data) < sz);
}

static inline int qdisc_qlen_cpu(const struct Qdisc *q)
{
	return this_cpu_ptr(q->cpu_qstats)->qlen;
}

static inline int qdisc_qlen(const struct Qdisc *q)
{
	return q->q.qlen;
}

static inline int qdisc_qlen_sum(const struct Qdisc *q)
{
	__u32 qlen = q->qstats.qlen;
	int i;

if (qdisc_is_percpu_stats(q)) {
		for_each_possible_cpu(i)
			qlen += per_cpu_ptr(q->cpu_qstats, i)->qlen;
	} else {
		qlen += q->q.qlen;
	}

return 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)
{
	struct Qdisc *q = rcu_dereference_rtnl(qdisc->dev_queue->qdisc);

return q;
}

static inline struct Qdisc *qdisc_root_bh(const struct Qdisc *qdisc)
{
	return rcu_dereference_bh(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 seqcount_t *qdisc_root_sleeping_running(const struct Qdisc *qdisc)
{
	struct Qdisc *root = qdisc_root_sleeping(qdisc);

ASSERT_RTNL();
	return &root->running;
}

static inline struct net_device *qdisc_dev(const struct Qdisc *qdisc)
{
	return qdisc->dev_queue->dev;
}

static inline void sch_tree_lock(struct Qdisc *q)
{
	if (q->flags & TCQ_F_MQROOT)
		spin_lock_bh(qdisc_lock(q));
	else
		spin_lock_bh(qdisc_root_sleeping_lock(q));
}

static inline void sch_tree_unlock(struct Qdisc *q)
{
	if (q->flags & TCQ_F_MQROOT)
		spin_unlock_bh(qdisc_lock(q));
	else
		spin_unlock_bh(qdisc_root_sleeping_lock(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 struct Qdisc_ops noqueue_qdisc_ops;
extern const struct Qdisc_ops *default_qdisc_ops;
static inline const struct Qdisc_ops *
get_default_qdisc_ops(const struct net_device *dev, int ntx)
{
	return ntx < dev->real_num_tx_queues ?
			default_qdisc_ops : &pfifo_fast_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;

if (!id)
		return NULL;

h = qdisc_class_hash(id, hash->hashmask);
	hlist_for_each_entry(cl, &hash->hash[h], hnode) {
		if (cl->classid == id)
			return cl;
	}
	return NULL;
}

static inline int tc_classid_to_hwtc(struct net_device *dev, u32 classid)
{
	u32 hwtc = TC_H_MIN(classid) - TC_H_MIN_PRIORITY;

return (hwtc < netdev_get_num_tc(dev)) ? hwtc : -EINVAL;
}

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 *);

int dev_qdisc_change_tx_queue_len(struct net_device *dev);
void dev_qdisc_change_real_num_tx(struct net_device *dev,
				  unsigned int new_real_tx);
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_put(struct Qdisc *qdisc);
void qdisc_put_unlocked(struct Qdisc *qdisc);
void qdisc_tree_reduce_backlog(struct Qdisc *qdisc, int n, int len);
#ifdef CONFIG_NET_SCHED
int qdisc_offload_dump_helper(struct Qdisc *q, enum tc_setup_type type,
			      void *type_data);
void qdisc_offload_graft_helper(struct net_device *dev, struct Qdisc *sch,
				struct Qdisc *new, struct Qdisc *old,
				enum tc_setup_type type, void *type_data,
				struct netlink_ext_ack *extack);
#else
static inline int
qdisc_offload_dump_helper(struct Qdisc *q, enum tc_setup_type type,
			  void *type_data)
{
	q->flags &= ~TCQ_F_OFFLOADED;
	return 0;
}

static inline void
qdisc_offload_graft_helper(struct net_device *dev, struct Qdisc *sch,
			   struct Qdisc *new, struct Qdisc *old,
			   enum tc_setup_type type, void *type_data,
			   struct netlink_ext_ack *extack)
{
}
#endif
struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
			  const struct Qdisc_ops *ops,
			  struct netlink_ext_ack *extack);
void qdisc_free(struct Qdisc *qdisc);
struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue,
				const struct Qdisc_ops *ops, u32 parentid,
				struct netlink_ext_ack *extack);
void __qdisc_calculate_pkt_len(struct sk_buff *skb,
			       const struct qdisc_size_table *stab);
int skb_do_redirect(struct sk_buff *);

static inline bool skb_at_tc_ingress(const struct sk_buff *skb)
{
#ifdef CONFIG_NET_CLS_ACT
	return skb->tc_at_ingress;
#else
	return false;
#endif
}

static inline bool skb_skip_tc_classify(struct sk_buff *skb)
{
#ifdef CONFIG_NET_CLS_ACT
	if (skb->tc_skip_classify) {
		skb->tc_skip_classify = 0;
		return true;
	}
#endif
	return false;
}

/* Reset all TX qdiscs greater than 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 = rtnl_dereference(netdev_get_tx_queue(dev, i)->qdisc);
		if (qdisc) {
			spin_lock_bh(qdisc_lock(qdisc));
			qdisc_reset(qdisc);
			spin_unlock_bh(qdisc_lock(qdisc));
		}
	}
}

/* Are all TX queues of the device empty?  */
static inline bool qdisc_all_tx_empty(const struct net_device *dev)
{
	unsigned int i;

rcu_read_lock();
	for (i = 0; i < dev->num_tx_queues; i++) {
		struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
		const struct Qdisc *q = rcu_dereference(txq->qdisc);

if (!qdisc_is_empty(q)) {
			rcu_read_unlock();
			return false;
		}
	}
	rcu_read_unlock();
	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 (rcu_access_pointer(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 (rcu_access_pointer(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,
				struct sk_buff **to_free)
{
	return sch->enqueue(skb, sch, to_free);
}

static inline void _bstats_update(struct gnet_stats_basic_packed *bstats,
				  __u64 bytes, __u32 packets)
{
	bstats->bytes += bytes;
	bstats->packets += packets;
}

static inline void bstats_update(struct gnet_stats_basic_packed *bstats,
				 const struct sk_buff *skb)
{
	_bstats_update(bstats,
		       qdisc_pkt_len(skb),
		       skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1);
}

static inline void _bstats_cpu_update(struct gnet_stats_basic_cpu *bstats,
				      __u64 bytes, __u32 packets)
{
	u64_stats_update_begin(&bstats->syncp);
	_bstats_update(&bstats->bstats, bytes, packets);
	u64_stats_update_end(&bstats->syncp);
}

static inline void bstats_cpu_update(struct gnet_stats_basic_cpu *bstats,
				     const struct sk_buff *skb)
{
	u64_stats_update_begin(&bstats->syncp);
	bstats_update(&bstats->bstats, skb);
	u64_stats_update_end(&bstats->syncp);
}

static inline void qdisc_bstats_cpu_update(struct Qdisc *sch,
					   const struct sk_buff *skb)
{
	bstats_cpu_update(this_cpu_ptr(sch->cpu_bstats), skb);
}

static inline void qdisc_bstats_update(struct Qdisc *sch,
				       const struct sk_buff *skb)
{
	bstats_update(&sch->bstats, skb);
}

static inline void qdisc_qstats_backlog_dec(struct Qdisc *sch,
					    const struct sk_buff *skb)
{
	sch->qstats.backlog -= qdisc_pkt_len(skb);
}

static inline void qdisc_qstats_cpu_backlog_dec(struct Qdisc *sch,
						const struct sk_buff *skb)
{
	this_cpu_sub(sch->cpu_qstats->backlog, qdisc_pkt_len(skb));
}

static inline void qdisc_qstats_backlog_inc(struct Qdisc *sch,
					    const struct sk_buff *skb)
{
	sch->qstats.backlog += qdisc_pkt_len(skb);
}

static inline void qdisc_qstats_cpu_backlog_inc(struct Qdisc *sch,
						const struct sk_buff *skb)
{
	this_cpu_add(sch->cpu_qstats->backlog, qdisc_pkt_len(skb));
}

static inline void qdisc_qstats_cpu_qlen_inc(struct Qdisc *sch)
{
	this_cpu_inc(sch->cpu_qstats->qlen);
}

static inline void qdisc_qstats_cpu_qlen_dec(struct Qdisc *sch)
{
	this_cpu_dec(sch->cpu_qstats->qlen);
}

static inline void qdisc_qstats_cpu_requeues_inc(struct Qdisc *sch)
{
	this_cpu_inc(sch->cpu_qstats->requeues);
}

static inline void __qdisc_qstats_drop(struct Qdisc *sch, int count)
{
	sch->qstats.drops += count;
}

static inline void qstats_drop_inc(struct gnet_stats_queue *qstats)
{
	qstats->drops++;
}

static inline void qstats_overlimit_inc(struct gnet_stats_queue *qstats)
{
	qstats->overlimits++;
}

static inline void qdisc_qstats_drop(struct Qdisc *sch)
{
	qstats_drop_inc(&sch->qstats);
}

static inline void qdisc_qstats_cpu_drop(struct Qdisc *sch)
{
	this_cpu_inc(sch->cpu_qstats->drops);
}

static inline void qdisc_qstats_overlimit(struct Qdisc *sch)
{
	sch->qstats.overlimits++;
}

static inline int qdisc_qstats_copy(struct gnet_dump *d, struct Qdisc *sch)
{
	__u32 qlen = qdisc_qlen_sum(sch);

return gnet_stats_copy_queue(d, sch->cpu_qstats, &sch->qstats, qlen);
}

static inline void qdisc_qstats_qlen_backlog(struct Qdisc *sch,  __u32 *qlen,
					     __u32 *backlog)
{
	struct gnet_stats_queue qstats = { 0 };
	__u32 len = qdisc_qlen_sum(sch);

__gnet_stats_copy_queue(&qstats, sch->cpu_qstats, &sch->qstats, len);
	*qlen = qstats.qlen;
	*backlog = qstats.backlog;
}

static inline void qdisc_tree_flush_backlog(struct Qdisc *sch)
{
	__u32 qlen, backlog;

qdisc_qstats_qlen_backlog(sch, &qlen, &backlog);
	qdisc_tree_reduce_backlog(sch, qlen, backlog);
}

static inline void qdisc_purge_queue(struct Qdisc *sch)
{
	__u32 qlen, backlog;

qdisc_qstats_qlen_backlog(sch, &qlen, &backlog);
	qdisc_reset(sch);
	qdisc_tree_reduce_backlog(sch, qlen, backlog);
}

static inline void qdisc_skb_head_init(struct qdisc_skb_head *qh)
{
	qh->head = NULL;
	qh->tail = NULL;
	qh->qlen = 0;
}

static inline void __qdisc_enqueue_tail(struct sk_buff *skb,
					struct qdisc_skb_head *qh)
{
	struct sk_buff *last = qh->tail;

if (last) {
		skb->next = NULL;
		last->next = skb;
		qh->tail = skb;
	} else {
		qh->tail = skb;
		qh->head = skb;
	}
	qh->qlen++;
}

static inline int qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch)
{
	__qdisc_enqueue_tail(skb, &sch->q);
	qdisc_qstats_backlog_inc(sch, skb);
	return NET_XMIT_SUCCESS;
}

static inline void __qdisc_enqueue_head(struct sk_buff *skb,
					struct qdisc_skb_head *qh)
{
	skb->next = qh->head;

if (!qh->head)
		qh->tail = skb;
	qh->head = skb;
	qh->qlen++;
}

static inline struct sk_buff *__qdisc_dequeue_head(struct qdisc_skb_head *qh)
{
	struct sk_buff *skb = qh->head;

if (likely(skb != NULL)) {
		qh->head = skb->next;
		qh->qlen--;
		if (qh->head == NULL)
			qh->tail = NULL;
		skb->next = NULL;
	}

return skb;
}

static inline struct sk_buff *qdisc_dequeue_internal(struct Qdisc *sch, bool direct)
{
	struct sk_buff *skb;

skb = __skb_dequeue(&sch->gso_skb);
	if (skb) {
		sch->q.qlen--;
		return skb;
	}
	if (direct)
		return __qdisc_dequeue_head(&sch->q);
	else
		return sch->dequeue(sch);
}

static inline struct sk_buff *qdisc_dequeue_head(struct Qdisc *sch)
{
	struct sk_buff *skb = __qdisc_dequeue_head(&sch->q);

if (likely(skb != NULL)) {
		qdisc_qstats_backlog_dec(sch, skb);
		qdisc_bstats_update(sch, skb);
	}

return skb;
}

/* Instead of calling kfree_skb() while root qdisc lock is held,
 * queue the skb for future freeing at end of __dev_xmit_skb()
 */
static inline void __qdisc_drop(struct sk_buff *skb, struct sk_buff **to_free)
{
	skb->next = *to_free;
	*to_free = skb;
}

static inline void __qdisc_drop_all(struct sk_buff *skb,
				    struct sk_buff **to_free)
{
	if (skb->prev)
		skb->prev->next = *to_free;
	else
		skb->next = *to_free;
	*to_free = skb;
}

static inline unsigned int __qdisc_queue_drop_head(struct Qdisc *sch,
						   struct qdisc_skb_head *qh,
						   struct sk_buff **to_free)
{
	struct sk_buff *skb = __qdisc_dequeue_head(qh);

if (likely(skb != NULL)) {
		unsigned int len = qdisc_pkt_len(skb);

qdisc_qstats_backlog_dec(sch, skb);
		__qdisc_drop(skb, to_free);
		return len;
	}

return 0;
}

static inline struct sk_buff *qdisc_peek_head(struct Qdisc *sch)
{
	const struct qdisc_skb_head *qh = &sch->q;

return qh->head;
}

/* generic pseudo peek method for non-work-conserving qdisc */
static inline struct sk_buff *qdisc_peek_dequeued(struct Qdisc *sch)
{
	struct sk_buff *skb = skb_peek(&sch->gso_skb);

/* we can reuse ->gso_skb because peek isn't called for root qdiscs */
	if (!skb) {
		skb = sch->dequeue(sch);

if (skb) {
			__skb_queue_head(&sch->gso_skb, skb);
			/* it's still part of the queue */
			qdisc_qstats_backlog_inc(sch, skb);
			sch->q.qlen++;
		}
	}

return skb;
}

static inline void qdisc_update_stats_at_dequeue(struct Qdisc *sch,
						 struct sk_buff *skb)
{
	if (qdisc_is_percpu_stats(sch)) {
		qdisc_qstats_cpu_backlog_dec(sch, skb);
		qdisc_bstats_cpu_update(sch, skb);
		qdisc_qstats_cpu_qlen_dec(sch);
	} else {
		qdisc_qstats_backlog_dec(sch, skb);
		qdisc_bstats_update(sch, skb);
		sch->q.qlen--;
	}
}

static inline void qdisc_update_stats_at_enqueue(struct Qdisc *sch,
						 unsigned int pkt_len)
{
	if (qdisc_is_percpu_stats(sch)) {
		qdisc_qstats_cpu_qlen_inc(sch);
		this_cpu_add(sch->cpu_qstats->backlog, pkt_len);
	} else {
		sch->qstats.backlog += pkt_len;
		sch->q.qlen++;
	}
}

/* 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 = skb_peek(&sch->gso_skb);

if (skb) {
		skb = __skb_dequeue(&sch->gso_skb);
		if (qdisc_is_percpu_stats(sch)) {
			qdisc_qstats_cpu_backlog_dec(sch, skb);
			qdisc_qstats_cpu_qlen_dec(sch);
		} else {
			qdisc_qstats_backlog_dec(sch, skb);
			sch->q.qlen--;
		}
	} else {
		skb = sch->dequeue(sch);
	}

return skb;
}

static inline void __qdisc_reset_queue(struct qdisc_skb_head *qh)
{
	/*
	 * We do not know the backlog in bytes of this list, it
	 * is up to the caller to correct it
	 */
	ASSERT_RTNL();
	if (qh->qlen) {
		rtnl_kfree_skbs(qh->head, qh->tail);

qh->head = NULL;
		qh->tail = NULL;
		qh->qlen = 0;
	}
}

static inline void qdisc_reset_queue(struct Qdisc *sch)
{
	__qdisc_reset_queue(&sch->q);
}

static inline struct Qdisc *qdisc_replace(struct Qdisc *sch, struct Qdisc *new,
					  struct Qdisc **pold)
{
	struct Qdisc *old;

sch_tree_lock(sch);
	old = *pold;
	*pold = new;
	if (old != NULL)
		qdisc_purge_queue(old);
	sch_tree_unlock(sch);

return old;
}

static inline void rtnl_qdisc_drop(struct sk_buff *skb, struct Qdisc *sch)
{
	rtnl_kfree_skbs(skb, skb);
	qdisc_qstats_drop(sch);
}

static inline int qdisc_drop_cpu(struct sk_buff *skb, struct Qdisc *sch,
				 struct sk_buff **to_free)
{
	__qdisc_drop(skb, to_free);
	qdisc_qstats_cpu_drop(sch);

return NET_XMIT_DROP;
}

static inline int qdisc_drop(struct sk_buff *skb, struct Qdisc *sch,
			     struct sk_buff **to_free)
{
	__qdisc_drop(skb, to_free);
	qdisc_qstats_drop(sch);

return NET_XMIT_DROP;
}

static inline int qdisc_drop_all(struct sk_buff *skb, struct Qdisc *sch,
				 struct sk_buff **to_free)
{
	__qdisc_drop_all(skb, to_free);
	qdisc_qstats_drop(sch);

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];
}

struct psched_ratecfg {
	u64	rate_bytes_ps; /* bytes per second */
	u32	mult;
	u16	overhead;
	u16	mpu;
	u8	linklayer;
	u8	shift;
};

static inline u64 psched_l2t_ns(const struct psched_ratecfg *r,
				unsigned int len)
{
	len += r->overhead;

if (len < r->mpu)
		len = r->mpu;

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->mpu = r->mpu;
	res->linklayer = (r->linklayer & TC_LINKLAYER_MASK);
}

struct psched_pktrate {
	u64	rate_pkts_ps; /* packets per second */
	u32	mult;
	u8	shift;
};

static inline u64 psched_pkt2t_ns(const struct psched_pktrate *r,
				  unsigned int pkt_num)
{
	return ((u64)pkt_num * r->mult) >> r->shift;
}

void psched_ppscfg_precompute(struct psched_pktrate *r, u64 pktrate64);

/* Mini Qdisc serves for specific needs of ingress/clsact Qdisc.
 * The fast path only needs to access filter list and to update stats
 */
struct mini_Qdisc {
	struct tcf_proto *filter_list;
	struct tcf_block *block;
	struct gnet_stats_basic_cpu __percpu *cpu_bstats;
	struct gnet_stats_queue	__percpu *cpu_qstats;
	struct rcu_head rcu;
};

static inline void mini_qdisc_bstats_cpu_update(struct mini_Qdisc *miniq,
						const struct sk_buff *skb)
{
	bstats_cpu_update(this_cpu_ptr(miniq->cpu_bstats), skb);
}

static inline void mini_qdisc_qstats_cpu_drop(struct mini_Qdisc *miniq)
{
	this_cpu_inc(miniq->cpu_qstats->drops);
}

struct mini_Qdisc_pair {
	struct mini_Qdisc miniq1;
	struct mini_Qdisc miniq2;
	struct mini_Qdisc __rcu **p_miniq;
};

void mini_qdisc_pair_swap(struct mini_Qdisc_pair *miniqp,
			  struct tcf_proto *tp_head);
void mini_qdisc_pair_init(struct mini_Qdisc_pair *miniqp, struct Qdisc *qdisc,
			  struct mini_Qdisc __rcu **p_miniq);
void mini_qdisc_pair_block_init(struct mini_Qdisc_pair *miniqp,
				struct tcf_block *block);

int sch_frag_xmit_hook(struct sk_buff *skb, int (*xmit)(struct sk_buff *skb));

/* Make sure qdisc is no longer in SCHED state. */
static inline void qdisc_synchronize(const struct Qdisc *q)
{
	while (test_bit(__QDISC_STATE_SCHED, &q->state))
		msleep(1);
}

#endif

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