1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2017 Nicira, Inc. 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef METER_H 7*4882a593Smuzhiyun #define METER_H 1 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/init.h> 10*4882a593Smuzhiyun #include <linux/module.h> 11*4882a593Smuzhiyun #include <linux/kernel.h> 12*4882a593Smuzhiyun #include <linux/netlink.h> 13*4882a593Smuzhiyun #include <linux/openvswitch.h> 14*4882a593Smuzhiyun #include <linux/genetlink.h> 15*4882a593Smuzhiyun #include <linux/skbuff.h> 16*4882a593Smuzhiyun #include <linux/bits.h> 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #include "flow.h" 19*4882a593Smuzhiyun struct datapath; 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun #define DP_MAX_BANDS 1 22*4882a593Smuzhiyun #define DP_METER_ARRAY_SIZE_MIN BIT_ULL(10) 23*4882a593Smuzhiyun #define DP_METER_NUM_MAX (200000UL) 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun struct dp_meter_band { 26*4882a593Smuzhiyun u32 type; 27*4882a593Smuzhiyun u32 rate; 28*4882a593Smuzhiyun u32 burst_size; 29*4882a593Smuzhiyun u64 bucket; /* 1/1000 packets, or in bits */ 30*4882a593Smuzhiyun struct ovs_flow_stats stats; 31*4882a593Smuzhiyun }; 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun struct dp_meter { 34*4882a593Smuzhiyun spinlock_t lock; /* Per meter lock */ 35*4882a593Smuzhiyun struct rcu_head rcu; 36*4882a593Smuzhiyun u32 id; 37*4882a593Smuzhiyun u16 kbps:1, keep_stats:1; 38*4882a593Smuzhiyun u16 n_bands; 39*4882a593Smuzhiyun u32 max_delta_t; 40*4882a593Smuzhiyun u64 used; 41*4882a593Smuzhiyun struct ovs_flow_stats stats; 42*4882a593Smuzhiyun struct dp_meter_band bands[]; 43*4882a593Smuzhiyun }; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun struct dp_meter_instance { 46*4882a593Smuzhiyun struct rcu_head rcu; 47*4882a593Smuzhiyun u32 n_meters; 48*4882a593Smuzhiyun struct dp_meter __rcu *dp_meters[]; 49*4882a593Smuzhiyun }; 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun struct dp_meter_table { 52*4882a593Smuzhiyun struct dp_meter_instance __rcu *ti; 53*4882a593Smuzhiyun u32 count; 54*4882a593Smuzhiyun u32 max_meters_allowed; 55*4882a593Smuzhiyun }; 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun extern struct genl_family dp_meter_genl_family; 58*4882a593Smuzhiyun int ovs_meters_init(struct datapath *dp); 59*4882a593Smuzhiyun void ovs_meters_exit(struct datapath *dp); 60*4882a593Smuzhiyun bool ovs_meter_execute(struct datapath *dp, struct sk_buff *skb, 61*4882a593Smuzhiyun struct sw_flow_key *key, u32 meter_id); 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun #endif /* meter.h */ 64