linux/net/openvswitch/meter.h
Tonghao Zhang e57358873b net: openvswitch: use u64 for meter bucket
When setting the meter rate to 4+Gbps, there is an
overflow, the meters don't work as expected.

Cc: Pravin B Shelar <pshelar@ovn.org>
Cc: Andy Zhou <azhou@ovn.org>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-23 18:26:11 -07:00

64 lines
1.3 KiB
C

/* 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 */