[linux-block.git] / net / openvswitch / meter.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2017 Nicira, Inc.
 */

#ifndef METER_H
#define METER_H 1

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/netlink.h>
#include <linux/openvswitch.h>
#include <linux/genetlink.h>
#include <linux/skbuff.h>
#include <linux/bits.h>

#include "flow.h"
struct datapath;

#define DP_MAX_BANDS		1
#define DP_METER_ARRAY_SIZE_MIN	BIT_ULL(10)
#define DP_METER_NUM_MAX	(200000UL)

struct dp_meter_band {
	u32 type;
	u32 rate;
	u32 burst_size;
	u64 bucket; /* 1/1000 packets, or in bits */
	struct ovs_flow_stats stats;
};

struct dp_meter {
	spinlock_t lock;    /* Per meter lock */
	struct rcu_head rcu;
	u32 id;
	u16 kbps:1, keep_stats:1;
	u16 n_bands;
	u32 max_delta_t;
	u64 used;
	struct ovs_flow_stats stats;
	struct dp_meter_band bands[];
};

struct dp_meter_instance {
	struct rcu_head rcu;
	u32 n_meters;
	struct dp_meter __rcu *dp_meters[];
};

struct dp_meter_table {
	struct dp_meter_instance __rcu *ti;
	u32 count;
	u32 max_meters_allowed;
};

extern struct genl_family dp_meter_genl_family;
int ovs_meters_init(struct datapath *dp);
void ovs_meters_exit(struct datapath *dp);
bool ovs_meter_execute(struct datapath *dp, struct sk_buff *skb,
		       struct sw_flow_key *key, u32 meter_id);

#endif /* meter.h */
Commit	Line	Data
25763b3c	1	/* SPDX-License-Identifier: GPL-2.0-only */
96fbc13d AZ	2	/*
96fbc13d AZ	3	* Copyright (c) 2017 Nicira, Inc.
96fbc13d AZ	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>
c7c4c44c	16	#include <linux/bits.h>
96fbc13d AZ	17
	18	#include "flow.h"
	19	struct datapath;
	20
	21	#define DP_MAX_BANDS 1
c7c4c44c	22	#define DP_METER_ARRAY_SIZE_MIN BIT_ULL(10)
eb58eebc	23	#define DP_METER_NUM_MAX (200000UL)
96fbc13d AZ	24
	25	struct dp_meter_band {
	26	u32 type;
	27	u32 rate;
	28	u32 burst_size;
e5735887	29	u64 bucket; /* 1/1000 packets, or in bits */
96fbc13d AZ	30	struct ovs_flow_stats stats;
	31	};
	32
	33	struct dp_meter {
	34	spinlock_t lock; /* Per meter lock */
	35	struct rcu_head rcu;
96fbc13d AZ	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
c7c4c44c TZ	45	struct dp_meter_instance {
	46	struct rcu_head rcu;
	47	u32 n_meters;
	48	struct dp_meter __rcu *dp_meters[];
	49	};
	50
	51	struct dp_meter_table {
	52	struct dp_meter_instance __rcu *ti;
	53	u32 count;
eb58eebc	54	u32 max_meters_allowed;
c7c4c44c TZ	55	};
c7c4c44c TZ	56
96fbc13d AZ	57	extern struct genl_family dp_meter_genl_family;
	58	int ovs_meters_init(struct datapath *dp);
	59	void ovs_meters_exit(struct datapath *dp);
	60	bool ovs_meter_execute(struct datapath dp, struct sk_buff skb,
	61	struct sw_flow_key *key, u32 meter_id);
	62
	63	#endif /* meter.h */