Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (c) 2007-2013 Nicira, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #ifndef FLOW_TABLE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #define FLOW_TABLE_H 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/openvswitch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/rcupdate.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <net/inet_ecn.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <net/ip_tunnels.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include "flow.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) struct mask_cache_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	u32 skb_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	u32 mask_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) struct mask_cache {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	u32 cache_size;  /* Must be ^2 value. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	struct mask_cache_entry __percpu *mask_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) struct mask_count {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	u64 counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) struct mask_array_stats {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	struct u64_stats_sync syncp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	u64 usage_cntrs[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) struct mask_array {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	int count, max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct mask_array_stats __percpu *masks_usage_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	u64 *masks_usage_zero_cntr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	struct sw_flow_mask __rcu *masks[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) struct table_instance {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	struct hlist_head *buckets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	unsigned int n_buckets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	int node_ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	u32 hash_seed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) struct flow_table {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	struct table_instance __rcu *ti;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct table_instance __rcu *ufid_ti;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	struct mask_cache __rcu *mask_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	struct mask_array __rcu *mask_array;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	unsigned long last_rehash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	unsigned int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	unsigned int ufid_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) extern struct kmem_cache *flow_stats_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) int ovs_flow_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) void ovs_flow_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) struct sw_flow *ovs_flow_alloc(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) void ovs_flow_free(struct sw_flow *, bool deferred);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) int ovs_flow_tbl_init(struct flow_table *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) int ovs_flow_tbl_count(const struct flow_table *table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) void ovs_flow_tbl_destroy(struct flow_table *table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) int ovs_flow_tbl_flush(struct flow_table *flow_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			const struct sw_flow_mask *mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) int  ovs_flow_tbl_num_masks(const struct flow_table *table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) u32  ovs_flow_tbl_masks_cache_size(const struct flow_table *table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) int  ovs_flow_tbl_masks_cache_resize(struct flow_table *table, u32 size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 				       u32 *bucket, u32 *idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 					  const struct sw_flow_key *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 					  u32 skb_hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 					  u32 *n_mask_hit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 					  u32 *n_cache_hit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 				    const struct sw_flow_key *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 					  const struct sw_flow_match *match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 					 const struct sw_flow_id *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		       bool full, const struct sw_flow_mask *mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) void ovs_flow_masks_rebalance(struct flow_table *table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) void table_instance_flow_flush(struct flow_table *table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 			       struct table_instance *ti,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 			       struct table_instance *ufid_ti);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #endif /* flow_table.h */