| Andy Zhou | 96fbc13 | 2017-11-10 12:09:42 -0800 | [diff] [blame] | 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" |
| 21 | struct datapath; |
| 22 | |
| 23 | #define DP_MAX_BANDS 1 |
| 24 | |
| 25 | struct 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 | |
| 33 | struct 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 | |
| 48 | extern struct genl_family dp_meter_genl_family; |
| 49 | int ovs_meters_init(struct datapath *dp); |
| 50 | void ovs_meters_exit(struct datapath *dp); |
| 51 | bool ovs_meter_execute(struct datapath *dp, struct sk_buff *skb, |
| 52 | struct sw_flow_key *key, u32 meter_id); |
| 53 | |
| 54 | #endif /* meter.h */ |