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"
  18 struct datapath;
  19
  20 #define DP_MAX_BANDS            1
  21
  22 struct 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
  30 struct 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
  45 extern struct genl_family dp_meter_genl_family;
  46 int ovs_meters_init(struct datapath *dp);
  47 void ovs_meters_exit(struct datapath *dp);
  48 bool ovs_meter_execute(struct datapath *dp, struct sk_buff *skb,
  49                        struct sw_flow_key *key, u32 meter_id);
  50
  51 #endif /* meter.h */