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/*
* Copyright (c) 2008, 2009, 2010, 2011 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef OFPROTO_NETFLOW_H
#define OFPROTO_NETFLOW_H 1
#include <stdint.h>
#include "flow.h"
#include "sset.h"
/* Default active timeout interval, in seconds.
*
* (The active timeout interval is the interval at which NetFlow records are
* sent for flows that do not expire, so that such flows are still
* accounted.) */
#define NF_ACTIVE_TIMEOUT_DEFAULT 600
struct ofexpired;
struct netflow_options {
struct sset collectors;
uint8_t engine_type;
uint8_t engine_id;
int active_timeout;
bool add_id_to_iface;
};
enum netflow_output_ports {
NF_OUT_FLOOD = UINT16_MAX,
NF_OUT_MULTI = UINT16_MAX - 1,
NF_OUT_DROP = UINT16_MAX - 2
};
struct netflow_flow {
long long int last_expired; /* Time this flow last timed out. */
long long int created; /* Time flow was created since time out. */
uint64_t packet_count_off; /* Packet count at last time out. */
uint64_t byte_count_off; /* Byte count at last time out. */
uint16_t output_iface; /* Output interface index. */
uint8_t tcp_flags; /* Bitwise-OR of all TCP flags seen. */
};
struct netflow *netflow_create(void);
void netflow_destroy(struct netflow *);
int netflow_set_options(struct netflow *, const struct netflow_options *);
void netflow_expire(struct netflow *, struct netflow_flow *,
struct ofexpired *);
bool netflow_run(struct netflow *);
void netflow_wait(struct netflow *);
void netflow_flow_init(struct netflow_flow *);
void netflow_flow_clear(struct netflow_flow *);
void netflow_flow_update_time(struct netflow *, struct netflow_flow *,
long long int used);
void netflow_flow_update_flags(struct netflow_flow *, uint8_t tcp_flags);
bool netflow_active_timeout_expired(struct netflow *, struct netflow_flow *);
#endif /* netflow.h */
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