LXR linux/net/openvswitch/meter.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (c) 2017 Nicira, Inc.
   4 */
   5
   6#ifndef METER_H
   7#define METER_H 1
   8
   9#include <linux/init.h>
  10#include <linux/module.h>
  11#include <linux/kernel.h>
  12#include <linux/netlink.h>
  13#include <linux/openvswitch.h>
  14#include <linux/genetlink.h>
  15#include <linux/skbuff.h>
  16
  17#include "flow.h"
  18struct datapath;
  19
  20#define DP_MAX_BANDS            1
  21
  22struct dp_meter_band {
  23        u32 type;
  24        u32 rate;
  25        u32 burst_size;
  26        u32 bucket; /* 1/1000 packets, or in bits */
  27        struct ovs_flow_stats stats;
  28};
  29
  30struct dp_meter {
  31        spinlock_t lock;    /* Per meter lock */
  32        struct rcu_head rcu;
  33        struct hlist_node dp_hash_node; /*Element in datapath->meters
  34                                         * hash table.
  35                                         */
  36        u32 id;
  37        u16 kbps:1, keep_stats:1;
  38        u16 n_bands;
  39        u32 max_delta_t;
  40        u64 used;
  41        struct ovs_flow_stats stats;
  42        struct dp_meter_band bands[];
  43};
  44
  45extern struct genl_family dp_meter_genl_family;
  46int ovs_meters_init(struct datapath *dp);
  47void ovs_meters_exit(struct datapath *dp);
  48bool ovs_meter_execute(struct datapath *dp, struct sk_buff *skb,
  49                       struct sw_flow_key *key, u32 meter_id);
  50
  51#endif /* meter.h */
  52