net/openvswitch/flow_table.h

   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
  25 struct table_instance {
  26         struct hlist_head *buckets;
  27         unsigned int n_buckets;
  28         struct rcu_head rcu;
  29         int node_ver;
  30         u32 hash_seed;
  31         bool keep_flows;
  32 };
  33
  34 struct flow_table {
  35         struct table_instance __rcu *ti;
  36         struct table_instance __rcu *ufid_ti;
  37         struct list_head mask_list;
  38         unsigned long last_rehash;
  39         unsigned int count;
  40         unsigned int ufid_count;
  41 };
  42
  43 extern struct kmem_cache *flow_stats_cache;
  44
  45 int ovs_flow_init(void);
  46 void ovs_flow_exit(void);
  47
  48 struct sw_flow *ovs_flow_alloc(void);
  49 void ovs_flow_free(struct sw_flow *, bool deferred);
  50
  51 int ovs_flow_tbl_init(struct flow_table *);
  52 int ovs_flow_tbl_count(const struct flow_table *table);
  53 void ovs_flow_tbl_destroy(struct flow_table *table);
  54 int ovs_flow_tbl_flush(struct flow_table *flow_table);
  55
  56 int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
  57                         const struct sw_flow_mask *mask);
  58 void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
  59 int  ovs_flow_tbl_num_masks(const struct flow_table *table);
  60 struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
  61                                        u32 *bucket, u32 *idx);
  62 struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *,
  63                                     const struct sw_flow_key *,
  64                                     u32 *n_mask_hit);
  65 struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
  66                                     const struct sw_flow_key *);
  67 struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl,
  68                                           const struct sw_flow_match *match);
  69 struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *,
  70                                          const struct sw_flow_id *);
  71
  72 bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *);
  73
  74 void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
  75                        bool full, const struct sw_flow_mask *mask);
  76 #endif /* flow_table.h */