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- /* 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[];
- };
- 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 */
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