mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
4bc63b1b53
Port the codes to linux upstream and with little changes.
Pravin B Shelar, says:
| mask caches index of mask in mask_list. On packet recv OVS
| need to traverse mask-list to get cached mask. Therefore array
| is better for retrieving cached mask. This also allows better
| cache replacement algorithm by directly checking mask's existence.
Link: d49fc3ff53
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Tested-by: Greg Rose <gvrose8192@gmail.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (c) 2007-2013 Nicira, Inc.
|
|
*/
|
|
|
|
#ifndef FLOW_TABLE_H
|
|
#define FLOW_TABLE_H 1
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/netlink.h>
|
|
#include <linux/openvswitch.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/types.h>
|
|
#include <linux/rcupdate.h>
|
|
#include <linux/if_ether.h>
|
|
#include <linux/in6.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/time.h>
|
|
|
|
#include <net/inet_ecn.h>
|
|
#include <net/ip_tunnels.h>
|
|
|
|
#include "flow.h"
|
|
|
|
struct mask_cache_entry {
|
|
u32 skb_hash;
|
|
u32 mask_index;
|
|
};
|
|
|
|
struct mask_array {
|
|
struct rcu_head rcu;
|
|
int count, max;
|
|
struct sw_flow_mask __rcu *masks[];
|
|
};
|
|
|
|
struct table_instance {
|
|
struct hlist_head *buckets;
|
|
unsigned int n_buckets;
|
|
struct rcu_head rcu;
|
|
int node_ver;
|
|
u32 hash_seed;
|
|
bool keep_flows;
|
|
};
|
|
|
|
struct flow_table {
|
|
struct table_instance __rcu *ti;
|
|
struct table_instance __rcu *ufid_ti;
|
|
struct mask_cache_entry __percpu *mask_cache;
|
|
struct mask_array __rcu *mask_array;
|
|
unsigned long last_rehash;
|
|
unsigned int count;
|
|
unsigned int ufid_count;
|
|
};
|
|
|
|
extern struct kmem_cache *flow_stats_cache;
|
|
|
|
int ovs_flow_init(void);
|
|
void ovs_flow_exit(void);
|
|
|
|
struct sw_flow *ovs_flow_alloc(void);
|
|
void ovs_flow_free(struct sw_flow *, bool deferred);
|
|
|
|
int ovs_flow_tbl_init(struct flow_table *);
|
|
int ovs_flow_tbl_count(const struct flow_table *table);
|
|
void ovs_flow_tbl_destroy(struct flow_table *table);
|
|
int ovs_flow_tbl_flush(struct flow_table *flow_table);
|
|
|
|
int ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
|
|
const struct sw_flow_mask *mask);
|
|
void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
|
|
int ovs_flow_tbl_num_masks(const struct flow_table *table);
|
|
struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
|
|
u32 *bucket, u32 *idx);
|
|
struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *,
|
|
const struct sw_flow_key *,
|
|
u32 skb_hash,
|
|
u32 *n_mask_hit);
|
|
struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
|
|
const struct sw_flow_key *);
|
|
struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl,
|
|
const struct sw_flow_match *match);
|
|
struct sw_flow *ovs_flow_tbl_lookup_ufid(struct flow_table *,
|
|
const struct sw_flow_id *);
|
|
|
|
bool ovs_flow_cmp(const struct sw_flow *, const struct sw_flow_match *);
|
|
|
|
void ovs_flow_mask_key(struct sw_flow_key *dst, const struct sw_flow_key *src,
|
|
bool full, const struct sw_flow_mask *mask);
|
|
#endif /* flow_table.h */
|