LXR linux/net/openvswitch/meter.h

   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 */
  55