act_api.h | Explore in Territory

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_ACT_API_H
#define __NET_ACT_API_H

/*
 * Public action API for classifiers/qdiscs
*/

#include <linux/refcount.h>
#include <net/flow_offload.h>
#include <net/sch_generic.h>
#include <net/pkt_sched.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>

struct tcf_idrinfo { … };

struct tc_action_ops;

struct tc_action { … };
#define tcf_index …
#define tcf_refcnt …
#define tcf_bindcnt …
#define tcf_action …
#define tcf_tm …
#define tcf_bstats …
#define tcf_qstats …
#define tcf_rate_est …
#define tcf_lock …

#define TCA_ACT_HW_STATS_ANY …

/* Reserve 16 bits for user-space. See TCA_ACT_FLAGS_NO_PERCPU_STATS. */
#define TCA_ACT_FLAGS_USER_BITS …
#define TCA_ACT_FLAGS_USER_MASK …
#define TCA_ACT_FLAGS_POLICE …
#define TCA_ACT_FLAGS_BIND …
#define TCA_ACT_FLAGS_REPLACE …
#define TCA_ACT_FLAGS_NO_RTNL …
#define TCA_ACT_FLAGS_AT_INGRESS …

/* Update lastuse only if needed, to avoid dirtying a cache line.
 * We use a temp variable to avoid fetching jiffies twice.
 */
static inline void tcf_lastuse_update(struct tcf_t *tm)
{ … }

static inline void tcf_tm_dump(struct tcf_t *dtm, const struct tcf_t *stm)
{ … }

static inline enum flow_action_hw_stats tc_act_hw_stats(u8 hw_stats)
{ … }

tc_action_priv_destructor;

struct tc_action_ops { … };

#ifdef CONFIG_NET_CLS_ACT

#define ACT_P_BOUND …
#define ACT_P_CREATED …
#define ACT_P_DELETED …

struct tc_action_net { … };

static inline
int tc_action_net_init(struct net *net, struct tc_action_net *tn,
		       const struct tc_action_ops *ops)
{ … }

void tcf_idrinfo_destroy(const struct tc_action_ops *ops,
			 struct tcf_idrinfo *idrinfo);

static inline void tc_action_net_exit(struct list_head *net_list,
				      unsigned int id)
{ … }

int tcf_generic_walker(struct tc_action_net *tn, struct sk_buff *skb,
		       struct netlink_callback *cb, int type,
		       const struct tc_action_ops *ops,
		       struct netlink_ext_ack *extack);
int tcf_idr_search(struct tc_action_net *tn, struct tc_action **a, u32 index);
int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est,
		   struct tc_action **a, const struct tc_action_ops *ops,
		   int bind, bool cpustats, u32 flags);
int tcf_idr_create_from_flags(struct tc_action_net *tn, u32 index,
			      struct nlattr *est, struct tc_action **a,
			      const struct tc_action_ops *ops, int bind,
			      u32 flags);
void tcf_idr_insert_many(struct tc_action *actions[], int init_res[]);
void tcf_idr_cleanup(struct tc_action_net *tn, u32 index);
int tcf_idr_check_alloc(struct tc_action_net *tn, u32 *index,
			struct tc_action **a, int bind);
int tcf_idr_release(struct tc_action *a, bool bind);

int tcf_register_action(struct tc_action_ops *a, struct pernet_operations *ops);
int tcf_unregister_action(struct tc_action_ops *a,
			  struct pernet_operations *ops);
#define NET_ACT_ALIAS_PREFIX …
#define MODULE_ALIAS_NET_ACT(kind) …
int tcf_action_destroy(struct tc_action *actions[], int bind);
int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions,
		    int nr_actions, struct tcf_result *res);
int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
		    struct nlattr *est,
		    struct tc_action *actions[], int init_res[], size_t *attr_size,
		    u32 flags, u32 fl_flags, struct netlink_ext_ack *extack);
struct tc_action_ops *tc_action_load_ops(struct nlattr *nla, u32 flags,
					 struct netlink_ext_ack *extack);
struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
				    struct nlattr *nla, struct nlattr *est,
				    struct tc_action_ops *a_o, int *init_res,
				    u32 flags, struct netlink_ext_ack *extack);
int tcf_action_dump(struct sk_buff *skb, struct tc_action *actions[], int bind,
		    int ref, bool terse);
int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);

static inline void tcf_action_update_bstats(struct tc_action *a,
					    struct sk_buff *skb)
{ … }

static inline void tcf_action_inc_drop_qstats(struct tc_action *a)
{ … }

static inline void tcf_action_inc_overlimit_qstats(struct tc_action *a)
{ … }

void tcf_action_update_stats(struct tc_action *a, u64 bytes, u64 packets,
			     u64 drops, bool hw);
int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int);

int tcf_action_update_hw_stats(struct tc_action *action);
int tcf_action_reoffload_cb(flow_indr_block_bind_cb_t *cb,
			    void *cb_priv, bool add);
int tcf_action_check_ctrlact(int action, struct tcf_proto *tp,
			     struct tcf_chain **handle,
			     struct netlink_ext_ack *newchain);
struct tcf_chain *tcf_action_set_ctrlact(struct tc_action *a, int action,
					 struct tcf_chain *newchain);

#ifdef CONFIG_INET
DECLARE_STATIC_KEY_FALSE(tcf_frag_xmit_count);
#endif

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

#else /* !CONFIG_NET_CLS_ACT */

static inline int tcf_action_reoffload_cb(flow_indr_block_bind_cb_t *cb,
					  void *cb_priv, bool add) {
	return 0;
}

#endif /* CONFIG_NET_CLS_ACT */

static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes,
					   u64 packets, u64 drops,
					   u64 lastuse, bool hw)
{ … }


#endif
linux/include/net/act_api.h
