FreeBSD/Linux Kernel Cross Reference
sys/net/if_gif.h

     /*      $FreeBSD$       */
     /*      $KAME: if_gif.h,v 1.17 2000/09/11 11:36:41 sumikawa Exp $       */
     
     /*-
      * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. 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.
     * 3. Neither the name of the project nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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_IF_GIF_H_
    #define _NET_IF_GIF_H_
    
    #ifdef _KERNEL
    #include "opt_inet.h"
    #include "opt_inet6.h"
    
    #include <netinet/in.h>
    
    struct ip;
    struct ip6_hdr;
    struct encaptab;
    
    extern  void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp,
                    int af);
    extern  void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m,
                    int af);
    extern  int  (*ng_gif_output_p)(struct ifnet *ifp, struct mbuf **mp);
    extern  void (*ng_gif_attach_p)(struct ifnet *ifp);
    extern  void (*ng_gif_detach_p)(struct ifnet *ifp);
    
    struct gif_softc {
            struct ifnet            *gif_ifp;
            struct rmlock           gif_lock;
            const struct encaptab   *gif_ecookie;
            int                     gif_family;
            int                     gif_flags;
            u_int                   gif_fibnum;
            u_int                   gif_options;
            void                    *gif_netgraph;  /* netgraph node info */
            union {
                    void            *hdr;
                    struct ip       *iphdr;
    #ifdef INET6
                    struct ip6_hdr  *ip6hdr;
    #endif
            } gif_uhdr;
            LIST_ENTRY(gif_softc)   gif_list; /* all gif's are linked */
    };
    #define GIF2IFP(sc)     ((sc)->gif_ifp)
    #define GIF_LOCK_INIT(sc)       rm_init(&(sc)->gif_lock, "gif softc")
    #define GIF_LOCK_DESTROY(sc)    rm_destroy(&(sc)->gif_lock)
    #define GIF_RLOCK_TRACKER       struct rm_priotracker gif_tracker
    #define GIF_RLOCK(sc)           rm_rlock(&(sc)->gif_lock, &gif_tracker)
    #define GIF_RUNLOCK(sc)         rm_runlock(&(sc)->gif_lock, &gif_tracker)
    #define GIF_RLOCK_ASSERT(sc)    rm_assert(&(sc)->gif_lock, RA_RLOCKED)
    #define GIF_WLOCK(sc)           rm_wlock(&(sc)->gif_lock)
    #define GIF_WUNLOCK(sc)         rm_wunlock(&(sc)->gif_lock)
    #define GIF_WLOCK_ASSERT(sc)    rm_assert(&(sc)->gif_lock, RA_WLOCKED)
    
    #define gif_iphdr       gif_uhdr.iphdr
    #define gif_hdr         gif_uhdr.hdr
    #ifdef INET6
    #define gif_ip6hdr      gif_uhdr.ip6hdr
    #endif
    
    #define GIF_MTU         (1280)  /* Default MTU */
    #define GIF_MTU_MIN     (1280)  /* Minimum MTU */
    #define GIF_MTU_MAX     (8192)  /* Maximum MTU */
    
    struct etherip_header {
    #if BYTE_ORDER == LITTLE_ENDIAN
            u_int   eip_resvl:4,    /* reserved */
                    eip_ver:4;      /* version */
    #endif
    #if BYTE_ORDER == BIG_ENDIAN
            u_int   eip_ver:4,      /* version */
                   eip_resvl:4;    /* reserved */
   #endif
           u_int8_t eip_resvh;     /* reserved */
   } __packed;
   
   #define ETHERIP_VERSION                 0x3
   /* mbuf adjust factor to force 32-bit alignment of IP header */
   #define ETHERIP_ALIGN           2
   
   /* Prototypes */
   void gif_input(struct mbuf *, struct ifnet *, int, uint8_t);
   int gif_output(struct ifnet *, struct mbuf *, const struct sockaddr *,
                  struct route *);
   int gif_encapcheck(const struct mbuf *, int, int, void *);
   #ifdef INET
   int in_gif_output(struct ifnet *, struct mbuf *, int, uint8_t);
   int in_gif_encapcheck(const struct mbuf *, int, int, void *);
   int in_gif_attach(struct gif_softc *);
   #endif
   #ifdef INET6
   int in6_gif_output(struct ifnet *, struct mbuf *, int, uint8_t);
   int in6_gif_encapcheck(const struct mbuf *, int, int, void *);
   int in6_gif_attach(struct gif_softc *);
   #endif
   #endif /* _KERNEL */
   
   #define GIFGOPTS        _IOWR('i', 150, struct ifreq)
   #define GIFSOPTS        _IOW('i', 151, struct ifreq)
   
   #define GIF_IGNORE_SOURCE       0x0002
   #define GIF_OPTMASK             (GIF_IGNORE_SOURCE)
   
   #endif /* _NET_IF_GIF_H_ */

Cache object: 096282b55ee4f10c2c15f719deac2341