Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2007-2013 Nicira, Inc.
4 */
5
6#ifndef FLOW_TABLE_H
7#define FLOW_TABLE_H 1
8
9#include <linux/kernel.h>
10#include <linux/netlink.h>
11#include <linux/openvswitch.h>
12#include <linux/spinlock.h>
13#include <linux/types.h>
14#include <linux/rcupdate.h>
15#include <linux/if_ether.h>
16#include <linux/in6.h>
17#include <linux/jiffies.h>
18#include <linux/time.h>
19
20#include <net/inet_ecn.h>
21#include <net/ip_tunnels.h>
22
23#include "flow.h"
24
25struct mask_cache_entry {
26 u32 skb_hash;
27 u32 mask_index;
28};
29
30struct mask_array {
31 struct rcu_head rcu;
32 int count, max;
33 struct sw_flow_mask __rcu *masks[];
34};
35
36struct table_instance {
37 struct hlist_head *buckets;
38 unsigned int n_buckets;
39 struct rcu_head rcu;
40 int node_ver;
41 u32 hash_seed;
42 bool keep_flows;
43};
44
45struct flow_table {
46 struct table_instance __rcu *ti;
47 struct table_instance __rcu *ufid_ti;
48 struct mask_cache_entry __percpu *mask_cache;
49 struct mask_array __rcu *mask_array;
50 unsigned long last_rehash;
51 unsigned int count;
52 unsigned int ufid_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(const struct flow_table *table);
65void ovs_flow_tbl_destroy(struct flow_table *table);
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 const 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 skb_hash,
77 u32 *n_mask_hit);
78struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
79 const struct sw_flow_key *);
80struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl,
81 const struct sw_flow_match *match);
82struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *,
83 const struct sw_flow_id *);
84
85bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *);
86
87void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
88 bool full, const struct sw_flow_mask *mask);
89#endif /* flow_table.h */