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 {
38 u64 __percpu *masks_usage_cntr;
39 u64 *masks_usage_zero_cntr;
40 struct u64_stats_sync syncp;
41 struct sw_flow_mask __rcu *masks[];
44 struct table_instance {
45 struct hlist_head *buckets;
46 unsigned int n_buckets;
54 struct table_instance __rcu *ti;
55 struct table_instance __rcu *ufid_ti;
56 struct mask_cache_entry __percpu *mask_cache;
57 struct mask_array __rcu *mask_array;
58 unsigned long last_rehash;
60 unsigned int ufid_count;
63 extern struct kmem_cache *flow_stats_cache;
65 int ovs_flow_init(void);
66 void ovs_flow_exit(void);
68 struct sw_flow *ovs_flow_alloc(void);
69 void ovs_flow_free(struct sw_flow *, bool deferred);
71 int ovs_flow_tbl_init(struct flow_table *);
72 int ovs_flow_tbl_count(const struct flow_table *table);
73 void ovs_flow_tbl_destroy(struct flow_table *table);
74 int ovs_flow_tbl_flush(struct flow_table *flow_table);
76 int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
77 const struct sw_flow_mask *mask);
78 void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
79 int ovs_flow_tbl_num_masks(const struct flow_table *table);
80 struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
81 u32 *bucket, u32 *idx);
82 struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *,
83 const struct sw_flow_key *,
86 struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
87 const struct sw_flow_key *);
88 struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl,
89 const struct sw_flow_match *match);
90 struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *,
91 const struct sw_flow_id *);
93 bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *);
95 void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
96 bool full, const struct sw_flow_mask *mask);
98 void ovs_flow_masks_rebalance(struct flow_table *table);
100 #endif /* flow_table.h */