/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (c) 2007-2013 Nicira, Inc. */ #ifndef FLOW_TABLE_H#define FLOW_TABLE_H 1 #include <linux/kernel.h>#include <linux/netlink.h>#include <linux/openvswitch.h>#include <linux/spinlock.h>#include <linux/types.h>#include <linux/rcupdate.h>#include <linux/if_ether.h>#include <linux/in6.h>#include <linux/jiffies.h>#include <linux/time.h> #include <net/inet_ecn.h>#include <net/ip_tunnels.h> #include "flow.h" struct mask_cache_entry {	u32 skb_hash;	u32 mask_index;}; struct mask_cache {	struct rcu_head rcu;	u32 cache_size;  /* Must be ^2 value. */	struct mask_cache_entry __percpu *mask_cache;}; struct mask_count {	int index;	u64 counter;}; struct mask_array_stats {	struct u64_stats_sync syncp;	u64 usage_cntrs[];}; struct mask_array {	struct rcu_head rcu;	int count, max;	struct mask_array_stats __percpu *masks_usage_stats;	u64 *masks_usage_zero_cntr;	struct sw_flow_mask __rcu *masks[] __counted_by(max);}; struct table_instance {	struct hlist_head *buckets;	unsigned int n_buckets;	struct rcu_head rcu;	int node_ver;	u32 hash_seed;}; struct flow_table {	struct table_instance __rcu *ti;	struct table_instance __rcu *ufid_ti;	struct mask_cache __rcu *mask_cache;	struct mask_array __rcu *mask_array;	unsigned long last_rehash;	unsigned int count;	unsigned int ufid_count;}; extern struct kmem_cache *flow_stats_cache; int ovs_flow_init(void);void ovs_flow_exit(void); struct sw_flow *ovs_flow_alloc(void);void ovs_flow_free(struct sw_flow *, bool deferred); int ovs_flow_tbl_init(struct flow_table *);int ovs_flow_tbl_count(const struct flow_table *table);void ovs_flow_tbl_destroy(struct flow_table *table);int ovs_flow_tbl_flush(struct flow_table *flow_table); int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,			const struct sw_flow_mask *mask);void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);int  ovs_flow_tbl_num_masks(const struct flow_table *table);u32  ovs_flow_tbl_masks_cache_size(const struct flow_table *table);int  ovs_flow_tbl_masks_cache_resize(struct flow_table *table, u32 size);struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,				       u32 *bucket, u32 *idx);struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *,					  const struct sw_flow_key *,					  u32 skb_hash,					  u32 *n_mask_hit,					  u32 *n_cache_hit);struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,				    const struct sw_flow_key *);struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl,					  const struct sw_flow_match *match);struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *,					 const struct sw_flow_id *); bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *); void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,		       bool full, const struct sw_flow_mask *mask); void ovs_flow_masks_rebalance(struct flow_table *table);void table_instance_flow_flush(struct flow_table *table,			       struct table_instance *ti,			       struct table_instance *ufid_ti); #endif /* flow_table.h */