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 */ 52