/* SPDX-License-Identifier: GPL-2.0 */

  #ifndef __NET_PKT_CLS_H
  #define __NET_PKT_CLS_H
  
  #include <linux/pkt_cls.h>

  #include <linux/workqueue.h>

  #include <net/sch_generic.h>
  #include <net/act_api.h>

  #include <net/net_namespace.h>

  /* TC action not accessible from user space */

  #define TC_ACT_CONSUMED		(TC_ACT_VALUE_MAX + 1)

  /* Basic packet classifier frontend definitions. */

  struct tcf_walker {

  	int	stop;
  	int	skip;
  	int	count;

  	bool	nonempty;

  	unsigned long cookie;

  	int	(*fn)(struct tcf_proto *, void *node, struct tcf_walker *);

  };

  int register_tcf_proto_ops(struct tcf_proto_ops *ops);
  int unregister_tcf_proto_ops(struct tcf_proto_ops *ops);

  struct tcf_block_ext_info {

  	enum flow_block_binder_type binder_type;

  	tcf_chain_head_change_t *chain_head_change;
  	void *chain_head_change_priv;

  	u32 block_index;

  };

  struct tcf_qevent {
  	struct tcf_block	*block;
  	struct tcf_block_ext_info info;
  	struct tcf_proto __rcu *filter_chain;
  };

  struct tcf_block_cb;

  bool tcf_queue_work(struct rcu_work *rwork, work_func_t func);

  #ifdef CONFIG_NET_CLS

  struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block,
  				       u32 chain_index);

  void tcf_chain_put_by_act(struct tcf_chain *chain);

  struct tcf_chain *tcf_get_next_chain(struct tcf_block *block,
  				     struct tcf_chain *chain);

  struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain,

  				     struct tcf_proto *tp, bool rtnl_held);

  void tcf_block_netif_keep_dst(struct tcf_block *block);

  int tcf_block_get(struct tcf_block **p_block,

  		  struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
  		  struct netlink_ext_ack *extack);

  int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,

  		      struct tcf_block_ext_info *ei,
  		      struct netlink_ext_ack *extack);

  void tcf_block_put(struct tcf_block *block);

  void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,

  		       struct tcf_block_ext_info *ei);

  static inline bool tcf_block_shared(struct tcf_block *block)
  {
  	return block->index;
  }

  static inline bool tcf_block_non_null_shared(struct tcf_block *block)
  {
  	return block && block->index;
  }

  static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
  {

  	WARN_ON(tcf_block_shared(block));

  	return block->q;
  }

  int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
  		 struct tcf_result *res, bool compat_mode);

  int tcf_classify_ingress(struct sk_buff *skb,
  			 const struct tcf_block *ingress_block,
  			 const struct tcf_proto *tp, struct tcf_result *res,
  			 bool compat_mode);

  #else

  static inline bool tcf_block_shared(struct tcf_block *block)
  {
  	return false;
  }

  static inline bool tcf_block_non_null_shared(struct tcf_block *block)
  {
  	return false;
  }

  static inline
  int tcf_block_get(struct tcf_block **p_block,

  		  struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
  		  struct netlink_ext_ack *extack)

  {
  	return 0;
  }

  static inline

  int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,

  		      struct tcf_block_ext_info *ei,
  		      struct netlink_ext_ack *extack)

  {
  	return 0;
  }

  static inline void tcf_block_put(struct tcf_block *block)

  {
  }

  static inline

  void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,

  		       struct tcf_block_ext_info *ei)
  {
  }

  static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
  {
  	return NULL;
  }

  static inline

  int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb,

  			       void *cb_priv)
  {
  	return 0;
  }
  
  static inline

  void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb,

  				  void *cb_priv)
  {
  }

  static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
  			       struct tcf_result *res, bool compat_mode)
  {
  	return TC_ACT_UNSPEC;
  }

  
  static inline int tcf_classify_ingress(struct sk_buff *skb,

  				       const struct tcf_block *ingress_block,

  				       const struct tcf_proto *tp,
  				       struct tcf_result *res, bool compat_mode)
  {
  	return TC_ACT_UNSPEC;
  }

  #endif

  static inline unsigned long
  __cls_set_class(unsigned long *clp, unsigned long cl)
  {

  	return xchg(clp, cl);

  }

  static inline void
  __tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base)

  {

  	unsigned long cl;

  	cl = q->ops->cl_ops->bind_tcf(q, base, r->classid);
  	cl = __cls_set_class(&r->class, cl);
  	if (cl)
  		q->ops->cl_ops->unbind_tcf(q, cl);

  }
  
  static inline void
  tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base)
  {

  	struct Qdisc *q = tp->chain->block->q;

  	/* Check q as it is not set for shared blocks. In that case,
  	 * setting class is not supported.
  	 */
  	if (!q)
  		return;

  	sch_tree_lock(q);
  	__tcf_bind_filter(q, r, base);
  	sch_tree_unlock(q);
  }
  
  static inline void
  __tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r)
  {
  	unsigned long cl;
  
  	if ((cl = __cls_set_class(&r->class, 0)) != 0)

  		q->ops->cl_ops->unbind_tcf(q, cl);

  }
  
  static inline void
  tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r)
  {

  	struct Qdisc *q = tp->chain->block->q;

  	if (!q)
  		return;

  	__tcf_unbind_filter(q, r);

  }

  struct tcf_exts {

  #ifdef CONFIG_NET_CLS_ACT

  	__u32	type; /* for backward compat(TCA_OLD_COMPAT) */

  	int nr_actions;
  	struct tc_action **actions;

  	struct net *net;

  #endif

  	/* Map to export classifier specific extension TLV types to the
  	 * generic extensions API. Unsupported extensions must be set to 0.
  	 */

  	int action;
  	int police;
  };

  static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net,
  				int action, int police)

  {
  #ifdef CONFIG_NET_CLS_ACT

  	exts->type = 0;

  	exts->nr_actions = 0;

  	exts->net = net;

  	exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
  				GFP_KERNEL);

  	if (!exts->actions)
  		return -ENOMEM;

  #endif

  	exts->action = action;
  	exts->police = police;

  	return 0;

  }

  /* Return false if the netns is being destroyed in cleanup_net(). Callers
   * need to do cleanup synchronously in this case, otherwise may race with
   * tc_action_net_exit(). Return true for other cases.
   */
  static inline bool tcf_exts_get_net(struct tcf_exts *exts)
  {
  #ifdef CONFIG_NET_CLS_ACT
  	exts->net = maybe_get_net(exts->net);
  	return exts->net != NULL;
  #else
  	return true;
  #endif
  }
  
  static inline void tcf_exts_put_net(struct tcf_exts *exts)
  {
  #ifdef CONFIG_NET_CLS_ACT
  	if (exts->net)
  		put_net(exts->net);
  #endif
  }

  #ifdef CONFIG_NET_CLS_ACT

  #define tcf_exts_for_each_action(i, a, exts) \
  	for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++)
  #else
  #define tcf_exts_for_each_action(i, a, exts) \

  	for (; 0; (void)(i), (void)(a), (void)(exts))

  #endif

  static inline void
  tcf_exts_stats_update(const struct tcf_exts *exts,

  		      u64 bytes, u64 packets, u64 drops, u64 lastuse,

  		      u8 used_hw_stats, bool used_hw_stats_valid)

  {
  #ifdef CONFIG_NET_CLS_ACT
  	int i;
  
  	preempt_disable();
  
  	for (i = 0; i < exts->nr_actions; i++) {
  		struct tc_action *a = exts->actions[i];

  		tcf_action_stats_update(a, bytes, packets, drops,
  					lastuse, true);

  		a->used_hw_stats = used_hw_stats;
  		a->used_hw_stats_valid = used_hw_stats_valid;

  	}
  
  	preempt_enable();
  #endif
  }

  /**

   * tcf_exts_has_actions - check if at least one action is present
   * @exts: tc filter extensions handle
   *
   * Returns true if at least one action is present.
   */
  static inline bool tcf_exts_has_actions(struct tcf_exts *exts)
  {

  #ifdef CONFIG_NET_CLS_ACT

  	return exts->nr_actions;
  #else
  	return false;
  #endif
  }

  /**

   * tcf_exts_exec - execute tc filter extensions
   * @skb: socket buffer
   * @exts: tc filter extensions handle
   * @res: desired result
   *

   * Executes all configured extensions. Returns TC_ACT_OK on a normal execution,

   * a negative number if the filter must be considered unmatched or
   * a positive action code (TC_ACT_*) which must be returned to the
   * underlying layer.
   */
  static inline int
  tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
  	      struct tcf_result *res)
  {
  #ifdef CONFIG_NET_CLS_ACT

  	return tcf_action_exec(skb, exts->actions, exts->nr_actions, res);

  #endif

  	return TC_ACT_OK;

  }

  int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
  		      struct nlattr **tb, struct nlattr *rate_tlv,

  		      struct tcf_exts *exts, bool ovr, bool rtnl_held,

  		      struct netlink_ext_ack *extack);

  void tcf_exts_destroy(struct tcf_exts *exts);

  void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src);

  int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts);

  int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts);

  int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts);

  
  /**
   * struct tcf_pkt_info - packet information
   */

  struct tcf_pkt_info {

  	unsigned char *		ptr;
  	int			nexthdr;
  };
  
  #ifdef CONFIG_NET_EMATCH
  
  struct tcf_ematch_ops;
  
  /**
   * struct tcf_ematch - extended match (ematch)
   * 
   * @matchid: identifier to allow userspace to reidentify a match
   * @flags: flags specifying attributes and the relation to other matches
   * @ops: the operations lookup table of the corresponding ematch module
   * @datalen: length of the ematch specific configuration data
   * @data: ematch specific data
   */

  struct tcf_ematch {

  	struct tcf_ematch_ops * ops;
  	unsigned long		data;
  	unsigned int		datalen;
  	u16			matchid;
  	u16			flags;

  	struct net		*net;

  };
  
  static inline int tcf_em_is_container(struct tcf_ematch *em)
  {
  	return !em->ops;
  }
  
  static inline int tcf_em_is_simple(struct tcf_ematch *em)
  {
  	return em->flags & TCF_EM_SIMPLE;
  }
  
  static inline int tcf_em_is_inverted(struct tcf_ematch *em)
  {
  	return em->flags & TCF_EM_INVERT;
  }
  
  static inline int tcf_em_last_match(struct tcf_ematch *em)
  {
  	return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END;
  }
  
  static inline int tcf_em_early_end(struct tcf_ematch *em, int result)
  {
  	if (tcf_em_last_match(em))
  		return 1;
  
  	if (result == 0 && em->flags & TCF_EM_REL_AND)
  		return 1;
  
  	if (result != 0 && em->flags & TCF_EM_REL_OR)
  		return 1;
  
  	return 0;
  }
  	
  /**
   * struct tcf_ematch_tree - ematch tree handle
   *
   * @hdr: ematch tree header supplied by userspace
   * @matches: array of ematches
   */

  struct tcf_ematch_tree {

  	struct tcf_ematch_tree_hdr hdr;
  	struct tcf_ematch *	matches;
  	
  };
  
  /**
   * struct tcf_ematch_ops - ematch module operations
   * 
   * @kind: identifier (kind) of this ematch module
   * @datalen: length of expected configuration data (optional)
   * @change: called during validation (optional)
   * @match: called during ematch tree evaluation, must return 1/0
   * @destroy: called during destroyage (optional)
   * @dump: called during dumping process (optional)
   * @owner: owner, must be set to THIS_MODULE
   * @link: link to previous/next ematch module (internal use)
   */

  struct tcf_ematch_ops {

  	int			kind;
  	int			datalen;

  	int			(*change)(struct net *net, void *,

  					  int, struct tcf_ematch *);
  	int			(*match)(struct sk_buff *, struct tcf_ematch *,
  					 struct tcf_pkt_info *);

  	void			(*destroy)(struct tcf_ematch *);

  	int			(*dump)(struct sk_buff *, struct tcf_ematch *);
  	struct module		*owner;
  	struct list_head	link;
  };

  int tcf_em_register(struct tcf_ematch_ops *);
  void tcf_em_unregister(struct tcf_ematch_ops *);
  int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *,
  			 struct tcf_ematch_tree *);

  void tcf_em_tree_destroy(struct tcf_ematch_tree *);

  int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int);
  int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *,
  			struct tcf_pkt_info *);

  
  /**

   * tcf_em_tree_match - evaulate an ematch tree
   *
   * @skb: socket buffer of the packet in question
   * @tree: ematch tree to be used for evaluation
   * @info: packet information examined by classifier
   *
   * This function matches @skb against the ematch tree in @tree by going
   * through all ematches respecting their logic relations returning
   * as soon as the result is obvious.
   *
   * Returns 1 if the ematch tree as-one matches, no ematches are configured
   * or ematch is not enabled in the kernel, otherwise 0 is returned.
   */
  static inline int tcf_em_tree_match(struct sk_buff *skb,
  				    struct tcf_ematch_tree *tree,
  				    struct tcf_pkt_info *info)
  {
  	if (tree->hdr.nmatches)
  		return __tcf_em_tree_match(skb, tree, info);
  	else
  		return 1;
  }

  #define MODULE_ALIAS_TCF_EMATCH(kind)	MODULE_ALIAS("ematch-kind-" __stringify(kind))

  #else /* CONFIG_NET_EMATCH */

  struct tcf_ematch_tree {

  };
  
  #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0)

  #define tcf_em_tree_destroy(t) do { (void)(t); } while(0)

  #define tcf_em_tree_dump(skb, t, tlv) (0)

  #define tcf_em_tree_match(skb, t, info) ((void)(info), 1)
  
  #endif /* CONFIG_NET_EMATCH */
  
  static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer)
  {
  	switch (layer) {
  		case TCF_LAYER_LINK:

  			return skb_mac_header(skb);

  		case TCF_LAYER_NETWORK:

  			return skb_network_header(skb);

  		case TCF_LAYER_TRANSPORT:

  			return skb_transport_header(skb);

  	}
  
  	return NULL;
  }

  static inline int tcf_valid_offset(const struct sk_buff *skb,
  				   const unsigned char *ptr, const int len)

  {

  	return likely((ptr + len) <= skb_tail_pointer(skb) &&
  		      ptr >= skb->head &&
  		      (ptr <= (ptr + len)));

  }

  static inline int

  tcf_change_indev(struct net *net, struct nlattr *indev_tlv,
  		 struct netlink_ext_ack *extack)

  {

  	char indev[IFNAMSIZ];
  	struct net_device *dev;

  	if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) {

  		NL_SET_ERR_MSG_ATTR(extack, indev_tlv,
  				    "Interface name too long");

  		return -EINVAL;

  	}

  	dev = __dev_get_by_name(net, indev);

  	if (!dev) {
  		NL_SET_ERR_MSG_ATTR(extack, indev_tlv,
  				    "Network device not found");

  		return -ENODEV;

  	}

  	return dev->ifindex;

  }

  static inline bool
  tcf_match_indev(struct sk_buff *skb, int ifindex)

  {

  	if (!ifindex)
  		return true;
  	if  (!skb->skb_iif)
  		return false;
  	return ifindex == skb->skb_iif;

  }

  int tc_setup_flow_action(struct flow_action *flow_action,

  			 const struct tcf_exts *exts);

  void tc_cleanup_flow_action(struct flow_action *flow_action);

  int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type,

  		     void *type_data, bool err_stop, bool rtnl_held);
  int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp,
  		    enum tc_setup_type type, void *type_data, bool err_stop,
  		    u32 *flags, unsigned int *in_hw_count, bool rtnl_held);
  int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp,
  			enum tc_setup_type type, void *type_data, bool err_stop,
  			u32 *old_flags, unsigned int *old_in_hw_count,
  			u32 *new_flags, unsigned int *new_in_hw_count,
  			bool rtnl_held);
  int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp,
  			enum tc_setup_type type, void *type_data, bool err_stop,
  			u32 *flags, unsigned int *in_hw_count, bool rtnl_held);
  int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp,
  			  bool add, flow_setup_cb_t *cb,
  			  enum tc_setup_type type, void *type_data,
  			  void *cb_priv, u32 *flags, unsigned int *in_hw_count);

  unsigned int tcf_exts_num_actions(struct tcf_exts *exts);

  #ifdef CONFIG_NET_CLS_ACT
  int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch,
  		    enum flow_block_binder_type binder_type,
  		    struct nlattr *block_index_attr,
  		    struct netlink_ext_ack *extack);
  void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch);
  int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr,
  			       struct netlink_ext_ack *extack);
  struct sk_buff *tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb,

  				  struct sk_buff **to_free, int *ret);

  int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe);
  #else
  static inline int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch,
  				  enum flow_block_binder_type binder_type,
  				  struct nlattr *block_index_attr,
  				  struct netlink_ext_ack *extack)
  {
  	return 0;
  }
  
  static inline void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch)
  {
  }
  
  static inline int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr,
  					     struct netlink_ext_ack *extack)
  {
  	return 0;
  }
  
  static inline struct sk_buff *
  tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb,

  		  struct sk_buff **to_free, int *ret)

  {
  	return skb;
  }
  
  static inline int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe)
  {
  	return 0;
  }
  #endif

  struct tc_cls_u32_knode {
  	struct tcf_exts *exts;

  	struct tcf_result *res;

  	struct tc_u32_sel *sel;

  	u32 handle;
  	u32 val;
  	u32 mask;
  	u32 link_handle;

  	u8 fshift;

  };
  
  struct tc_cls_u32_hnode {
  	u32 handle;
  	u32 prio;
  	unsigned int divisor;
  };
  
  enum tc_clsu32_command {
  	TC_CLSU32_NEW_KNODE,
  	TC_CLSU32_REPLACE_KNODE,
  	TC_CLSU32_DELETE_KNODE,
  	TC_CLSU32_NEW_HNODE,
  	TC_CLSU32_REPLACE_HNODE,
  	TC_CLSU32_DELETE_HNODE,
  };
  
  struct tc_cls_u32_offload {

  	struct flow_cls_common_offload common;

  	/* knode values */
  	enum tc_clsu32_command command;
  	union {
  		struct tc_cls_u32_knode knode;
  		struct tc_cls_u32_hnode hnode;
  	};
  };

  static inline bool tc_can_offload(const struct net_device *dev)

  {

  	return dev->features & NETIF_F_HW_TC;

  }

  static inline bool tc_can_offload_extack(const struct net_device *dev,
  					 struct netlink_ext_ack *extack)
  {
  	bool can = tc_can_offload(dev);
  
  	if (!can)
  		NL_SET_ERR_MSG(extack, "TC offload is disabled on net device");
  
  	return can;
  }

  static inline bool
  tc_cls_can_offload_and_chain0(const struct net_device *dev,

  			      struct flow_cls_common_offload *common)

  {
  	if (!tc_can_offload_extack(dev, common->extack))
  		return false;
  	if (common->chain_index) {
  		NL_SET_ERR_MSG(common->extack,
  			       "Driver supports only offload of chain 0");
  		return false;
  	}
  	return true;
  }

  static inline bool tc_skip_hw(u32 flags)
  {
  	return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false;
  }

  static inline bool tc_skip_sw(u32 flags)
  {
  	return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false;
  }
  
  /* SKIP_HW and SKIP_SW are mutually exclusive flags. */
  static inline bool tc_flags_valid(u32 flags)
  {

  	if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW |
  		      TCA_CLS_FLAGS_VERBOSE))

  		return false;

  	flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW;

  	if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)))
  		return false;
  
  	return true;
  }

  static inline bool tc_in_hw(u32 flags)
  {
  	return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false;
  }

  static inline void

  tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common,

  			   const struct tcf_proto *tp, u32 flags,
  			   struct netlink_ext_ack *extack)
  {
  	cls_common->chain_index = tp->chain->index;
  	cls_common->protocol = tp->protocol;

  	cls_common->prio = tp->prio >> 16;

  	if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE)

  		cls_common->extack = extack;
  }

  enum tc_matchall_command {
  	TC_CLSMATCHALL_REPLACE,
  	TC_CLSMATCHALL_DESTROY,

  	TC_CLSMATCHALL_STATS,

  };
  
  struct tc_cls_matchall_offload {

  	struct flow_cls_common_offload common;

  	enum tc_matchall_command command;

  	struct flow_rule *rule;

  	struct flow_stats stats;

  	unsigned long cookie;
  };

  enum tc_clsbpf_command {

  	TC_CLSBPF_OFFLOAD,

  	TC_CLSBPF_STATS,

  };
  
  struct tc_cls_bpf_offload {

  	struct flow_cls_common_offload common;

  	enum tc_clsbpf_command command;
  	struct tcf_exts *exts;
  	struct bpf_prog *prog;

  	struct bpf_prog *oldprog;

  	const char *name;
  	bool exts_integrated;
  };

  struct tc_mqprio_qopt_offload {
  	/* struct tc_mqprio_qopt must always be the first element */
  	struct tc_mqprio_qopt qopt;
  	u16 mode;
  	u16 shaper;
  	u32 flags;
  	u64 min_rate[TC_QOPT_MAX_QUEUE];
  	u64 max_rate[TC_QOPT_MAX_QUEUE];
  };

  
  /* This structure holds cookie structure that is passed from user
   * to the kernel for actions and classifiers
   */
  struct tc_cookie {
  	u8  *data;
  	u32 len;

  	struct rcu_head rcu;

  };

  struct tc_qopt_offload_stats {
  	struct gnet_stats_basic_packed *bstats;
  	struct gnet_stats_queue *qstats;
  };

  enum tc_mq_command {
  	TC_MQ_CREATE,
  	TC_MQ_DESTROY,

  	TC_MQ_STATS,

  	TC_MQ_GRAFT,
  };
  
  struct tc_mq_opt_offload_graft_params {
  	unsigned long queue;
  	u32 child_handle;

  };
  
  struct tc_mq_qopt_offload {
  	enum tc_mq_command command;
  	u32 handle;

  	union {
  		struct tc_qopt_offload_stats stats;
  		struct tc_mq_opt_offload_graft_params graft_params;
  	};

  };

  enum tc_red_command {
  	TC_RED_REPLACE,
  	TC_RED_DESTROY,
  	TC_RED_STATS,
  	TC_RED_XSTATS,

  	TC_RED_GRAFT,

  };
  
  struct tc_red_qopt_offload_params {
  	u32 min;
  	u32 max;
  	u32 probability;

  	u32 limit;

  	bool is_ecn;

  	bool is_harddrop;

  	bool is_nodrop;

  	struct gnet_stats_queue *qstats;

  };

  
  struct tc_red_qopt_offload {
  	enum tc_red_command command;
  	u32 handle;
  	u32 parent;
  	union {
  		struct tc_red_qopt_offload_params set;

  		struct tc_qopt_offload_stats stats;

  		struct red_stats *xstats;

  		u32 child_handle;

  	};
  };

  enum tc_gred_command {
  	TC_GRED_REPLACE,
  	TC_GRED_DESTROY,

  	TC_GRED_STATS,

  };
  
  struct tc_gred_vq_qopt_offload_params {
  	bool present;
  	u32 limit;
  	u32 prio;
  	u32 min;
  	u32 max;
  	bool is_ecn;
  	bool is_harddrop;
  	u32 probability;
  	/* Only need backlog, see struct tc_prio_qopt_offload_params */
  	u32 *backlog;
  };
  
  struct tc_gred_qopt_offload_params {
  	bool grio_on;
  	bool wred_on;
  	unsigned int dp_cnt;
  	unsigned int dp_def;
  	struct gnet_stats_queue *qstats;
  	struct tc_gred_vq_qopt_offload_params tab[MAX_DPs];
  };

  struct tc_gred_qopt_offload_stats {
  	struct gnet_stats_basic_packed bstats[MAX_DPs];
  	struct gnet_stats_queue qstats[MAX_DPs];
  	struct red_stats *xstats[MAX_DPs];
  };

  struct tc_gred_qopt_offload {
  	enum tc_gred_command command;
  	u32 handle;
  	u32 parent;
  	union {
  		struct tc_gred_qopt_offload_params set;

  		struct tc_gred_qopt_offload_stats stats;

  	};
  };

  enum tc_prio_command {
  	TC_PRIO_REPLACE,
  	TC_PRIO_DESTROY,
  	TC_PRIO_STATS,

  	TC_PRIO_GRAFT,

  };
  
  struct tc_prio_qopt_offload_params {
  	int bands;
  	u8 priomap[TC_PRIO_MAX + 1];

  	/* At the point of un-offloading the Qdisc, the reported backlog and
  	 * qlen need to be reduced by the portion that is in HW.

  	 */
  	struct gnet_stats_queue *qstats;
  };

  struct tc_prio_qopt_offload_graft_params {
  	u8 band;
  	u32 child_handle;
  };

  struct tc_prio_qopt_offload {
  	enum tc_prio_command command;
  	u32 handle;
  	u32 parent;
  	union {
  		struct tc_prio_qopt_offload_params replace_params;
  		struct tc_qopt_offload_stats stats;

  		struct tc_prio_qopt_offload_graft_params graft_params;

  	};
  };

  enum tc_root_command {
  	TC_ROOT_GRAFT,
  };
  
  struct tc_root_qopt_offload {
  	enum tc_root_command command;
  	u32 handle;
  	bool ingress;
  };

  enum tc_ets_command {
  	TC_ETS_REPLACE,
  	TC_ETS_DESTROY,
  	TC_ETS_STATS,
  	TC_ETS_GRAFT,
  };
  
  struct tc_ets_qopt_offload_replace_params {
  	unsigned int bands;
  	u8 priomap[TC_PRIO_MAX + 1];
  	unsigned int quanta[TCQ_ETS_MAX_BANDS];	/* 0 for strict bands. */
  	unsigned int weights[TCQ_ETS_MAX_BANDS];
  	struct gnet_stats_queue *qstats;
  };
  
  struct tc_ets_qopt_offload_graft_params {
  	u8 band;
  	u32 child_handle;
  };
  
  struct tc_ets_qopt_offload {
  	enum tc_ets_command command;
  	u32 handle;
  	u32 parent;
  	union {
  		struct tc_ets_qopt_offload_replace_params replace_params;
  		struct tc_qopt_offload_stats stats;
  		struct tc_ets_qopt_offload_graft_params graft_params;
  	};
  };

  enum tc_tbf_command {
  	TC_TBF_REPLACE,
  	TC_TBF_DESTROY,
  	TC_TBF_STATS,
  };
  
  struct tc_tbf_qopt_offload_replace_params {
  	struct psched_ratecfg rate;
  	u32 max_size;
  	struct gnet_stats_queue *qstats;
  };
  
  struct tc_tbf_qopt_offload {
  	enum tc_tbf_command command;
  	u32 handle;
  	u32 parent;
  	union {
  		struct tc_tbf_qopt_offload_replace_params replace_params;
  		struct tc_qopt_offload_stats stats;
  	};
  };

  enum tc_fifo_command {
  	TC_FIFO_REPLACE,
  	TC_FIFO_DESTROY,
  	TC_FIFO_STATS,
  };
  
  struct tc_fifo_qopt_offload {
  	enum tc_fifo_command command;
  	u32 handle;
  	u32 parent;
  	union {
  		struct tc_qopt_offload_stats stats;
  	};
  };

  #endif