1c9422999SThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 2e6445719SPravin B Shelar /* 3e6445719SPravin B Shelar * Copyright (c) 2007-2013 Nicira, Inc. 4e6445719SPravin B Shelar */ 5e6445719SPravin B Shelar 6e6445719SPravin B Shelar #ifndef FLOW_TABLE_H 7e6445719SPravin B Shelar #define FLOW_TABLE_H 1 8e6445719SPravin B Shelar 9e6445719SPravin B Shelar #include <linux/kernel.h> 10e6445719SPravin B Shelar #include <linux/netlink.h> 11e6445719SPravin B Shelar #include <linux/openvswitch.h> 12e6445719SPravin B Shelar #include <linux/spinlock.h> 13e6445719SPravin B Shelar #include <linux/types.h> 14e6445719SPravin B Shelar #include <linux/rcupdate.h> 15e6445719SPravin B Shelar #include <linux/if_ether.h> 16e6445719SPravin B Shelar #include <linux/in6.h> 17e6445719SPravin B Shelar #include <linux/jiffies.h> 18e6445719SPravin B Shelar #include <linux/time.h> 19e6445719SPravin B Shelar 20e6445719SPravin B Shelar #include <net/inet_ecn.h> 21e6445719SPravin B Shelar #include <net/ip_tunnels.h> 22e6445719SPravin B Shelar 23e6445719SPravin B Shelar #include "flow.h" 24e6445719SPravin B Shelar 2504b7d136STonghao Zhang struct mask_cache_entry { 2604b7d136STonghao Zhang u32 skb_hash; 2704b7d136STonghao Zhang u32 mask_index; 2804b7d136STonghao Zhang }; 2904b7d136STonghao Zhang 30*4bc63b1bSTonghao Zhang struct mask_array { 31*4bc63b1bSTonghao Zhang struct rcu_head rcu; 32*4bc63b1bSTonghao Zhang int count, max; 33*4bc63b1bSTonghao Zhang struct sw_flow_mask __rcu *masks[]; 34*4bc63b1bSTonghao Zhang }; 35*4bc63b1bSTonghao Zhang 36b637e498SPravin B Shelar struct table_instance { 37ee9c5e67SKent Overstreet struct hlist_head *buckets; 38b637e498SPravin B Shelar unsigned int n_buckets; 39e6445719SPravin B Shelar struct rcu_head rcu; 40e6445719SPravin B Shelar int node_ver; 41e6445719SPravin B Shelar u32 hash_seed; 42e6445719SPravin B Shelar bool keep_flows; 43e6445719SPravin B Shelar }; 44e6445719SPravin B Shelar 45b637e498SPravin B Shelar struct flow_table { 46b637e498SPravin B Shelar struct table_instance __rcu *ti; 4774ed7ab9SJoe Stringer struct table_instance __rcu *ufid_ti; 4804b7d136STonghao Zhang struct mask_cache_entry __percpu *mask_cache; 49*4bc63b1bSTonghao Zhang struct mask_array __rcu *mask_array; 50b637e498SPravin B Shelar unsigned long last_rehash; 51b637e498SPravin B Shelar unsigned int count; 5274ed7ab9SJoe Stringer unsigned int ufid_count; 53b637e498SPravin B Shelar }; 54b637e498SPravin B Shelar 5563e7959cSJarno Rajahalme extern struct kmem_cache *flow_stats_cache; 5663e7959cSJarno Rajahalme 57e6445719SPravin B Shelar int ovs_flow_init(void); 58e6445719SPravin B Shelar void ovs_flow_exit(void); 59e6445719SPravin B Shelar 6023dabf88SJarno Rajahalme struct sw_flow *ovs_flow_alloc(void); 61e6445719SPravin B Shelar void ovs_flow_free(struct sw_flow *, bool deferred); 62e6445719SPravin B Shelar 63b637e498SPravin B Shelar int ovs_flow_tbl_init(struct flow_table *); 6412eb18f7SThomas Graf int ovs_flow_tbl_count(const struct flow_table *table); 659b996e54SPravin B Shelar void ovs_flow_tbl_destroy(struct flow_table *table); 66b637e498SPravin B Shelar int ovs_flow_tbl_flush(struct flow_table *flow_table); 67e6445719SPravin B Shelar 68618ed0c8SPravin B Shelar int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow, 6912eb18f7SThomas Graf const struct sw_flow_mask *mask); 70e6445719SPravin B Shelar void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow); 711bd7116fSAndy Zhou int ovs_flow_tbl_num_masks(const struct flow_table *table); 72b637e498SPravin B Shelar struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table, 73e6445719SPravin B Shelar u32 *bucket, u32 *idx); 745bb50632SAndy Zhou struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *, 751bd7116fSAndy Zhou const struct sw_flow_key *, 7604b7d136STonghao Zhang u32 skb_hash, 771bd7116fSAndy Zhou u32 *n_mask_hit); 785bb50632SAndy Zhou struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *, 795bb50632SAndy Zhou const struct sw_flow_key *); 804a46b24eSAlex Wang struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl, 8112eb18f7SThomas Graf const struct sw_flow_match *match); 8274ed7ab9SJoe Stringer struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *, 8374ed7ab9SJoe Stringer const struct sw_flow_id *); 8474ed7ab9SJoe Stringer 8574ed7ab9SJoe Stringer bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *); 86e6445719SPravin B Shelar 87e6445719SPravin B Shelar void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src, 88ae5f2fb1SJesse Gross bool full, const struct sw_flow_mask *mask); 89e6445719SPravin B Shelar #endif /* flow_table.h */ 90