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/*
* Copyright (c) 2009, 2010 Nicira Networks.
* Distributed under the terms of the GNU GPL version 2.
*
* Significant portions of this file may be copied from parts of the Linux
* kernel, by Linus Torvalds and others.
*/
#ifndef FLOW_H
#define FLOW_H 1
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/rcupdate.h>
#include <linux/gfp.h>
#include <linux/jiffies.h>
#include <linux/time.h>
#include "openvswitch/datapath-protocol.h"
#include "table.h"
struct sk_buff;
struct sw_flow_actions {
struct rcu_head rcu;
unsigned int n_actions;
union odp_action actions[];
};
struct sw_flow {
struct rcu_head rcu;
struct tbl_node tbl_node;
struct odp_flow_key key;
struct sw_flow_actions *sf_acts;
u8 ip_tos; /* IP TOS value. */
spinlock_t lock; /* Lock for values below. */
unsigned long used; /* Last used time (in jiffies). */
u64 packet_count; /* Number of packets matched. */
u64 byte_count; /* Number of bytes matched. */
u8 tcp_flags; /* Union of seen TCP flags. */
};
extern struct kmem_cache *flow_cache;
struct sw_flow_actions *flow_actions_alloc(size_t n_actions);
void flow_deferred_free(struct sw_flow *);
void flow_deferred_free_acts(struct sw_flow_actions *);
int flow_extract(struct sk_buff *, u16 in_port, struct odp_flow_key *);
void flow_used(struct sw_flow *, struct sk_buff *);
struct sw_flow *flow_cast(const struct tbl_node *);
u32 flow_hash(const struct odp_flow_key *key);
int flow_cmp(const struct tbl_node *, void *target);
void flow_free_tbl(struct tbl_node *);
int flow_init(void);
void flow_exit(void);
#endif /* flow.h */
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