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 */ 77