/* * Copyright (c) 2007-2013 Nicira, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA */ #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 <linux/flex_array.h> #include <net/inet_ecn.h>#include <net/ip_tunnels.h> #include "flow.h" struct table_instance {	struct flex_array *buckets;	unsigned int n_buckets;	struct rcu_head rcu;	int node_ver;	u32 hash_seed;	bool keep_flows;}; struct flow_table {	struct table_instance __rcu *ti;	struct table_instance __rcu *ufid_ti;	struct list_head mask_list;	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);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 *n_mask_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);#endif /* flow_table.h */