Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1/*
2 * Copyright (c) 2007-2013 Nicira, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
16 * 02110-1301, USA
17 */
18
19#ifndef FLOW_TABLE_H
20#define FLOW_TABLE_H 1
21
22#include <linux/kernel.h>
23#include <linux/netlink.h>
24#include <linux/openvswitch.h>
25#include <linux/spinlock.h>
26#include <linux/types.h>
27#include <linux/rcupdate.h>
28#include <linux/if_ether.h>
29#include <linux/in6.h>
30#include <linux/jiffies.h>
31#include <linux/time.h>
32#include <linux/flex_array.h>
33
34#include <net/inet_ecn.h>
35#include <net/ip_tunnels.h>
36
37#include "flow.h"
38
39struct table_instance {
40 struct flex_array *buckets;
41 unsigned int n_buckets;
42 struct rcu_head rcu;
43 int node_ver;
44 u32 hash_seed;
45 bool keep_flows;
46};
47
48struct flow_table {
49 struct table_instance __rcu *ti;
50 struct list_head mask_list;
51 unsigned long last_rehash;
52 unsigned int count;
53};
54
55extern struct kmem_cache *flow_stats_cache;
56
57int ovs_flow_init(void);
58void ovs_flow_exit(void);
59
60struct sw_flow *ovs_flow_alloc(void);
61void ovs_flow_free(struct sw_flow *, bool deferred);
62
63int ovs_flow_tbl_init(struct flow_table *);
64int ovs_flow_tbl_count(struct flow_table *table);
65void ovs_flow_tbl_destroy(struct flow_table *table, bool deferred);
66int ovs_flow_tbl_flush(struct flow_table *flow_table);
67
68int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
69 struct sw_flow_mask *mask);
70void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
71int ovs_flow_tbl_num_masks(const struct flow_table *table);
72struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
73 u32 *bucket, u32 *idx);
74struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *,
75 const struct sw_flow_key *,
76 u32 *n_mask_hit);
77struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
78 const struct sw_flow_key *);
79struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl,
80 struct sw_flow_match *match);
81bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow,
82 struct sw_flow_match *match);
83
84void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
85 const struct sw_flow_mask *mask);
86#endif /* flow_table.h */