freebsd-dev/sys/netpfil/pf/pf_mtag.h
Kristof Provost a908f8f0dc pf: tag dummynet'd route-to packets with their real destination
If we delay route-to/dup-to/reply-to through dummynet we are eventually
returned to pf_test(). At that point we no longer have the context for
the route-to destination. We'd just skip the pf_test() and continue
processing. This means that route-to did not work as expected.

Extend pf_mtag to carry the route-to destination so we can apply it when
we re-enter pf_test().

Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D35159
2022-05-12 21:50:10 +02:00

74 lines
2.4 KiB
C

/* $FreeBSD$ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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_ROUTE_TO 0x01
#define PF_TAG_DUMMYNET 0x02
#define PF_TAG_TRANSLATE_LOCALHOST 0x04
#define PF_PACKET_LOOPED 0x08
#define PF_FASTFWD_OURS_PRESENT 0x10
#define PF_REASSEMBLED 0x20
#define PF_DUPLICATED 0x40
#define PF_TAG_SYNCOOKIE_RECREATED 0x80
struct pf_mtag {
void *hdr; /* saved hdr pos in mbuf, for ECN */
u_int16_t qid; /* queue id */
u_int32_t qid_hash; /* queue hashid used by WFQ like algos */
u_int16_t tag; /* tag id */
u_int8_t flags;
u_int8_t routed;
u_int16_t dnpipe;
u_int32_t dnflags;
u_int16_t if_index; /* For ROUTE_TO */
u_int16_t if_idxgen; /* For ROUTE_TO */
struct sockaddr_storage dst; /* For ROUTE_TO */
};
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));
}
#endif /* _KERNEL */
#endif /* _NET_PF_MTAG_H_ */