xref: /freebsd-9.3-release/sys/net/flowtable.h

/**************************************************************************

Copyright (c) 2008-2010, BitGravity Inc.
All rights reserved.

Redistribution and use in source and binary forms, with or without
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 1. Redistributions of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer.

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    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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$FreeBSD$

***************************************************************************/

#ifndef	_NET_FLOWTABLE_H_
#define	_NET_FLOWTABLE_H_

#ifdef	_KERNEL

#define	FL_HASH_ALL	(1<<0)	/* hash 4-tuple + protocol */
#define	FL_PCPU		(1<<1)	/* pcpu cache */
#define	FL_NOAUTO	(1<<2)	/* don't automatically add flentry on miss */
#define FL_IPV6  	(1<<9)

#define	FL_TCP		(1<<11)
#define	FL_SCTP		(1<<12)
#define	FL_UDP		(1<<13)
#define	FL_DEBUG	(1<<14)
#define	FL_DEBUG_ALL	(1<<15)

struct flowtable;
struct flentry;
struct route;
struct route_in6;

VNET_DECLARE(struct flowtable *, ip_ft);
#define	V_ip_ft			VNET(ip_ft)

VNET_DECLARE(struct flowtable *, ip6_ft);
#define	V_ip6_ft		VNET(ip6_ft)

struct flowtable *flowtable_alloc(char *name, int nentry, int flags);

/*
 * Given a flow table, look up the L3 and L2 information and
 * return it in the route.
 *
 */
struct flentry *flowtable_lookup_mbuf(struct flowtable *ft, struct mbuf *m, int af);

struct flentry *flowtable_lookup(struct flowtable *ft, struct sockaddr_storage *ssa,
    struct sockaddr_storage *dsa, uint32_t fibnum, int flags);

int kern_flowtable_insert(struct flowtable *ft, struct sockaddr_storage *ssa,
    struct sockaddr_storage *dsa, struct route *ro, uint32_t fibnum, int flags);

void flow_invalidate(struct flentry *fl);
void flowtable_route_flush(struct flowtable *ft, struct rtentry *rt);

void flow_to_route(struct flentry *fl, struct route *ro);

void flow_to_route_in6(struct flentry *fl, struct route_in6 *ro);


#endif /* _KERNEL */
#endif