flow_table.h 2.3 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
/*
 * 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"

39
struct table_instance {
40
	struct flex_array *buckets;
41
	unsigned int n_buckets;
42 43 44 45 46 47
	struct rcu_head rcu;
	int node_ver;
	u32 hash_seed;
	bool keep_flows;
};

48 49 50 51 52 53 54
struct flow_table {
	struct table_instance __rcu *ti;
	struct list_head mask_list;
	unsigned long last_rehash;
	unsigned int count;
};

55 56 57 58 59 60
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);

61 62
int ovs_flow_tbl_init(struct flow_table *);
int ovs_flow_tbl_count(struct flow_table *table);
63
void ovs_flow_tbl_destroy(struct flow_table *table);
64
int ovs_flow_tbl_flush(struct flow_table *flow_table);
65

66 67
int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
			struct sw_flow_mask *mask);
68
void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
69
struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
70 71 72 73 74 75 76 77 78 79
				       u32 *bucket, u32 *idx);
struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
				    const struct sw_flow_key *);

bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow,
			       struct sw_flow_match *match);

void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
		       const struct sw_flow_mask *mask);
#endif /* flow_table.h */