The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netpfil/pf/pf_mtag.h

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    1 /*      $FreeBSD$       */
    2 /*-
    3  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    4  *
    5  * Copyright (c) 2001 Daniel Hartmeier
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  *
   12  *    - Redistributions of source code must retain the above copyright
   13  *      notice, this list of conditions and the following disclaimer.
   14  *    - Redistributions in binary form must reproduce the above
   15  *      copyright notice, this list of conditions and the following
   16  *      disclaimer in the documentation and/or other materials provided
   17  *      with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   22  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   23  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   25  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   26  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   27  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   29  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  */
   33 
   34 #ifndef _NET_PF_MTAG_H_
   35 #define _NET_PF_MTAG_H_
   36 
   37 #ifdef _KERNEL
   38 
   39 #define PF_TAG_ROUTE_TO                 0x01
   40 #define PF_TAG_DUMMYNET                 0x02
   41 #define PF_TAG_TRANSLATE_LOCALHOST      0x04
   42 #define PF_PACKET_LOOPED                0x08
   43 #define PF_FASTFWD_OURS_PRESENT         0x10
   44 #define PF_REASSEMBLED                  0x20
   45 #define PF_DUPLICATED                   0x40
   46 #define PF_TAG_SYNCOOKIE_RECREATED      0x80
   47 
   48 struct pf_mtag {
   49         void            *hdr;           /* saved hdr pos in mbuf, for ECN */
   50         u_int16_t        qid;           /* queue id */
   51         u_int32_t        qid_hash;      /* queue hashid used by WFQ like algos */
   52         u_int16_t        tag;           /* tag id */
   53         u_int8_t         flags;
   54         u_int8_t         routed;
   55         u_int16_t        dnpipe;
   56         u_int32_t        dnflags;
   57         u_int16_t        if_index;      /* For ROUTE_TO */
   58         u_int16_t        if_idxgen;     /* For ROUTE_TO */
   59         struct sockaddr_storage dst;    /* For ROUTE_TO */
   60 };
   61 
   62 static __inline struct pf_mtag *
   63 pf_find_mtag(struct mbuf *m)
   64 {
   65         struct m_tag    *mtag;
   66 
   67         if ((mtag = m_tag_find(m, PACKET_TAG_PF, NULL)) == NULL)
   68                 return (NULL);
   69 
   70         return ((struct pf_mtag *)(mtag + 1));
   71 }
   72 #endif /* _KERNEL */
   73 #endif /* _NET_PF_MTAG_H_ */

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