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/* $FreeBSD: release/9.1.0/sys/contrib/pf/net/pf_mtag.h 223637 2011-06-28 11:57:25Z bz $ */
/*
* Copyright (c) 2001 Daniel Hartmeier
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef _NET_PF_MTAG_H_
#define _NET_PF_MTAG_H_
#ifdef _KERNEL
#define PF_TAG_GENERATED 0x01
#define PF_TAG_FRAGCACHE 0x02
#define PF_TAG_TRANSLATE_LOCALHOST 0x04
#define PF_PACKET_LOOPED 0x08
#define PF_FASTFWD_OURS_PRESENT 0x10
struct pf_mtag {
void *hdr; /* saved hdr pos in mbuf, for ECN */
void *statekey; /* pf stackside statekey */
u_int32_t qid; /* queue id */
u_int rtableid; /* alternate routing table id */
u_int16_t tag; /* tag id */
u_int8_t flags;
u_int8_t routed;
};
static __inline struct pf_mtag *pf_find_mtag(struct mbuf *);
static __inline struct pf_mtag *pf_get_mtag(struct mbuf *);
static __inline struct pf_mtag *
pf_find_mtag(struct mbuf *m)
{
struct m_tag *mtag;
if ((mtag = m_tag_find(m, PACKET_TAG_PF, NULL)) == NULL)
return (NULL);
return ((struct pf_mtag *)(mtag + 1));
}
static __inline struct pf_mtag *
pf_get_mtag(struct mbuf *m)
{
struct m_tag *mtag;
if ((mtag = m_tag_find(m, PACKET_TAG_PF, NULL)) == NULL) {
mtag = m_tag_get(PACKET_TAG_PF, sizeof(struct pf_mtag),
M_NOWAIT);
if (mtag == NULL)
return (NULL);
bzero(mtag + 1, sizeof(struct pf_mtag));
m_tag_prepend(m, mtag);
}
return ((struct pf_mtag *)(mtag + 1));
}
#endif /* _KERNEL */
#endif /* _NET_PF_MTAG_H_ */