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 mask_cache_entry
{
47 struct sw_flow_mask __rcu
*masks
[];
50 struct table_instance
{
51 struct flex_array
*buckets
;
52 unsigned int n_buckets
;
60 struct table_instance __rcu
*ti
;
61 struct mask_cache_entry __percpu
*mask_cache
;
62 struct mask_array __rcu
*mask_array
;
63 unsigned long last_rehash
;
67 extern struct kmem_cache
*flow_stats_cache
;
69 int ovs_flow_init(void);
70 void ovs_flow_exit(void);
72 struct sw_flow
*ovs_flow_alloc(void);
73 void ovs_flow_free(struct sw_flow
*, bool deferred
);
75 int ovs_flow_tbl_init(struct flow_table
*);
76 int ovs_flow_tbl_count(const struct flow_table
*table
);
77 void ovs_flow_tbl_destroy(struct flow_table
*table
);
78 int ovs_flow_tbl_flush(struct flow_table
*flow_table
);
80 int ovs_flow_tbl_insert(struct flow_table
*table
, struct sw_flow
*flow
,
81 const struct sw_flow_mask
*mask
);
82 void ovs_flow_tbl_remove(struct flow_table
*table
, struct sw_flow
*flow
);
83 int ovs_flow_tbl_num_masks(const struct flow_table
*table
);
84 struct sw_flow
*ovs_flow_tbl_dump_next(struct table_instance
*table
,
85 u32
*bucket
, u32
*idx
);
86 struct sw_flow
*ovs_flow_tbl_lookup_stats(struct flow_table
*,
87 const struct sw_flow_key
*,
90 struct sw_flow
*ovs_flow_tbl_lookup(struct flow_table
*,
91 const struct sw_flow_key
*);
92 struct sw_flow
*ovs_flow_tbl_lookup_exact(struct flow_table
*tbl
,
93 const struct sw_flow_match
*match
);
94 bool ovs_flow_cmp_unmasked_key(const struct sw_flow
*flow
,
95 const struct sw_flow_match
*match
);
97 void ovs_flow_mask_key(struct sw_flow_key
*dst
, const struct sw_flow_key
*src
,
98 const struct sw_flow_mask
*mask
);
99 #endif /* flow_table.h */