1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2007-2013 Nicira, Inc.
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>
20 #include <net/inet_ecn.h>
21 #include <net/ip_tunnels.h>
25 struct mask_cache_entry {
32 u32 cache_size; /* Must be ^2 value. */
33 struct mask_cache_entry __percpu *mask_cache;
44 u64 __percpu *masks_usage_cntr;
45 u64 *masks_usage_zero_cntr;
46 struct u64_stats_sync syncp;
47 struct sw_flow_mask __rcu *masks[];
50 struct table_instance {
51 struct hlist_head *buckets;
52 unsigned int n_buckets;
60 struct table_instance __rcu *ti;
61 struct table_instance __rcu *ufid_ti;
62 struct mask_cache __rcu *mask_cache;
63 struct mask_array __rcu *mask_array;
64 unsigned long last_rehash;
66 unsigned int ufid_count;
69 extern struct kmem_cache *flow_stats_cache;
71 int ovs_flow_init(void);
72 void ovs_flow_exit(void);
74 struct sw_flow *ovs_flow_alloc(void);
75 void ovs_flow_free(struct sw_flow *, bool deferred);
77 int ovs_flow_tbl_init(struct flow_table *);
78 int ovs_flow_tbl_count(const struct flow_table *table);
79 void ovs_flow_tbl_destroy(struct flow_table *table);
80 int ovs_flow_tbl_flush(struct flow_table *flow_table);
82 int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
83 const struct sw_flow_mask *mask);
84 void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
85 int ovs_flow_tbl_num_masks(const struct flow_table *table);
86 u32 ovs_flow_tbl_masks_cache_size(const struct flow_table *table);
87 int ovs_flow_tbl_masks_cache_resize(struct flow_table *table, u32 size);
88 struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
89 u32 *bucket, u32 *idx);
90 struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *,
91 const struct sw_flow_key *,
95 struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
96 const struct sw_flow_key *);
97 struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl,
98 const struct sw_flow_match *match);
99 struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *,
100 const struct sw_flow_id *);
102 bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *);
104 void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
105 bool full, const struct sw_flow_mask *mask);
107 void ovs_flow_masks_rebalance(struct flow_table *table);
108 void table_instance_flow_flush(struct flow_table *table,
109 struct table_instance *ti,
110 struct table_instance *ufid_ti);
112 #endif /* flow_table.h */