1/*
 2 * Copyright (c) 2017 Nicira, Inc.
 3 *
 4 * This program is free software; you can redistribute it and/or
 5 * modify it under the terms of version 2 of the GNU General Public
 6 * License as published by the Free Software Foundation.
 7 */
 8
 9#ifndef METER_H
10#define METER_H 1
11
12#include <linux/init.h>
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/netlink.h>
16#include <linux/openvswitch.h>
17#include <linux/genetlink.h>
18#include <linux/skbuff.h>
19
20#include "flow.h"
21struct datapath;
22
23#define DP_MAX_BANDS		1
24
25struct dp_meter_band {
26	u32 type;
27	u32 rate;
28	u32 burst_size;
29	u32 bucket; /* 1/1000 packets, or in bits */
30	struct ovs_flow_stats stats;
31};
32
33struct dp_meter {
34	spinlock_t lock;    /* Per meter lock */
35	struct rcu_head rcu;
36	struct hlist_node dp_hash_node; /*Element in datapath->meters
37					 * hash table.
38					 */
39	u32 id;
40	u16 kbps:1, keep_stats:1;
41	u16 n_bands;
42	u32 max_delta_t;
43	u64 used;
44	struct ovs_flow_stats stats;
45	struct dp_meter_band bands[];
46};
47
48extern struct genl_family dp_meter_genl_family;
49int ovs_meters_init(struct datapath *dp);
50void ovs_meters_exit(struct datapath *dp);
51bool ovs_meter_execute(struct datapath *dp, struct sk_buff *skb,
52		       struct sw_flow_key *key, u32 meter_id);
53
54#endif /* meter.h */