2 * Copyright (c) 2007-2013 Nicira, Inc.
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.
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.
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
20 #define FLOW_TABLE_H 1
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>
34 #include <net/inet_ecn.h>
35 #include <net/ip_tunnels.h>
39 struct table_instance {
40 struct flex_array *buckets;
41 unsigned int n_buckets;
49 struct table_instance __rcu *ti;
50 struct list_head mask_list;
51 unsigned long last_rehash;
55 int ovs_flow_init(void);
56 void ovs_flow_exit(void);
58 struct sw_flow *ovs_flow_alloc(bool percpu_stats);
59 void ovs_flow_free(struct sw_flow *, bool deferred);
61 int ovs_flow_tbl_init(struct flow_table *);
62 int ovs_flow_tbl_count(struct flow_table *table);
63 void ovs_flow_tbl_destroy(struct flow_table *table, bool deferred);
64 int ovs_flow_tbl_flush(struct flow_table *flow_table);
66 int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
67 struct sw_flow_mask *mask);
68 void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
69 int ovs_flow_tbl_num_masks(const struct flow_table *table);
70 struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
71 u32 *bucket, u32 *idx);
72 struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *,
73 const struct sw_flow_key *,
75 struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
76 const struct sw_flow_key *);
78 bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow,
79 struct sw_flow_match *match);
81 void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
82 const struct sw_flow_mask *mask);
83 #endif /* flow_table.h */