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 30eac87c41SEelco Chaudron struct mask_count { 31eac87c41SEelco Chaudron int index; 32eac87c41SEelco Chaudron u64 counter; 33eac87c41SEelco Chaudron }; 34eac87c41SEelco Chaudron 354bc63b1bSTonghao Zhang struct mask_array { 364bc63b1bSTonghao Zhang struct rcu_head rcu; 374bc63b1bSTonghao Zhang int count, max; 38eac87c41SEelco Chaudron u64 __percpu *masks_usage_cntr; 39eac87c41SEelco Chaudron u64 *masks_usage_zero_cntr; 40eac87c41SEelco Chaudron struct u64_stats_sync syncp; 414bc63b1bSTonghao Zhang struct sw_flow_mask __rcu *masks[]; 424bc63b1bSTonghao Zhang }; 434bc63b1bSTonghao Zhang 44b637e498SPravin B Shelar struct table_instance { 45ee9c5e67SKent Overstreet struct hlist_head *buckets; 46b637e498SPravin B Shelar unsigned int n_buckets; 47e6445719SPravin B Shelar struct rcu_head rcu; 48e6445719SPravin B Shelar int node_ver; 49e6445719SPravin B Shelar u32 hash_seed; 50e6445719SPravin B Shelar bool keep_flows; 51e6445719SPravin B Shelar }; 52e6445719SPravin B Shelar 53b637e498SPravin B Shelar struct flow_table { 54b637e498SPravin B Shelar struct table_instance __rcu *ti; 5574ed7ab9SJoe Stringer struct table_instance __rcu *ufid_ti; 5604b7d136STonghao Zhang struct mask_cache_entry __percpu *mask_cache; 574bc63b1bSTonghao Zhang struct mask_array __rcu *mask_array; 58b637e498SPravin B Shelar unsigned long last_rehash; 59b637e498SPravin B Shelar unsigned int count; 6074ed7ab9SJoe Stringer unsigned int ufid_count; 61b637e498SPravin B Shelar }; 62b637e498SPravin B Shelar 6363e7959cSJarno Rajahalme extern struct kmem_cache *flow_stats_cache; 6463e7959cSJarno Rajahalme 65e6445719SPravin B Shelar int ovs_flow_init(void); 66e6445719SPravin B Shelar void ovs_flow_exit(void); 67e6445719SPravin B Shelar 6823dabf88SJarno Rajahalme struct sw_flow *ovs_flow_alloc(void); 69e6445719SPravin B Shelar void ovs_flow_free(struct sw_flow *, bool deferred); 70e6445719SPravin B Shelar 71b637e498SPravin B Shelar int ovs_flow_tbl_init(struct flow_table *); 7212eb18f7SThomas Graf int ovs_flow_tbl_count(const struct flow_table *table); 739b996e54SPravin B Shelar void ovs_flow_tbl_destroy(struct flow_table *table); 74b637e498SPravin B Shelar int ovs_flow_tbl_flush(struct flow_table *flow_table); 75e6445719SPravin B Shelar 76618ed0c8SPravin B Shelar int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow, 7712eb18f7SThomas Graf const struct sw_flow_mask *mask); 78e6445719SPravin B Shelar void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow); 791bd7116fSAndy Zhou int ovs_flow_tbl_num_masks(const struct flow_table *table); 80b637e498SPravin B Shelar struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table, 81e6445719SPravin B Shelar u32 *bucket, u32 *idx); 825bb50632SAndy Zhou struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *, 831bd7116fSAndy Zhou const struct sw_flow_key *, 8404b7d136STonghao Zhang u32 skb_hash, 85*9d2f627bSEelco Chaudron u32 *n_mask_hit, 86*9d2f627bSEelco Chaudron u32 *n_cache_hit); 875bb50632SAndy Zhou struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *, 885bb50632SAndy Zhou const struct sw_flow_key *); 894a46b24eSAlex Wang struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl, 9012eb18f7SThomas Graf const struct sw_flow_match *match); 9174ed7ab9SJoe Stringer struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *, 9274ed7ab9SJoe Stringer const struct sw_flow_id *); 9374ed7ab9SJoe Stringer 9474ed7ab9SJoe Stringer bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *); 95e6445719SPravin B Shelar 96e6445719SPravin B Shelar void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src, 97ae5f2fb1SJesse Gross bool full, const struct sw_flow_mask *mask); 98eac87c41SEelco Chaudron 99eac87c41SEelco Chaudron void ovs_flow_masks_rebalance(struct flow_table *table); 100eac87c41SEelco Chaudron 101e6445719SPravin B Shelar #endif /* flow_table.h */ 102