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

     /*      $NetBSD: if_atm.h,v 1.15 2005/12/11 23:05:24 thorpej Exp $       */
     
     /*
      *
      * Copyright (c) 1996 Charles D. Cranor and Washington University.
      * 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. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Charles D. Cranor and
     *      Washington University.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
     */
    
    /*
     * net/if_atm.h
     */
    
    #ifndef _NET_IF_ATM_H_
    #define _NET_IF_ATM_H_
    
    #if (defined(__FreeBSD__) || defined(__bsdi__)) && defined(KERNEL)
    #ifndef _KERNEL
    #define _KERNEL
    #endif
    #endif /* freebsd doesn't define _KERNEL */
    
    #ifndef NO_ATM_PVCEXT
    /*
     * ATM_PVCEXT enables PVC extension: VP/VC shaping
     * and PVC shadow interfaces.
     */
    #define ATM_PVCEXT      /* enable pvc extension */
    #endif
    
    #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
    #define RTALLOC1(A,B)           rtalloc1((A),(B))
    #elif defined(__FreeBSD__)
    #define RTALLOC1(A,B)           rtalloc1((A),(B),0UL)
    #endif
    
    /*
     * pseudo header for packet transmission
     */
    
    struct atm_pseudohdr {
      u_int8_t atm_ph[4];   /* flags+VPI+VCI1(msb)+VCI2(lsb) */
    };
    
    #define ATM_PH_FLAGS(X) ((X)->atm_ph[0])
    #define ATM_PH_VPI(X)   ((X)->atm_ph[1])
    #define ATM_PH_VCI(X)   ((((X)->atm_ph[2]) << 8) | ((X)->atm_ph[3]))
    #define ATM_PH_SETVCI(X,V) { \
            (X)->atm_ph[2] = ((V) >> 8) & 0xff; \
            (X)->atm_ph[3] = ((V) & 0xff); \
    }
    
    #define ATM_PH_AAL5    0x01     /* use AAL5? (0 == aal0) */
    #define ATM_PH_LLCSNAP 0x02     /* use the LLC SNAP encoding (iff aal5) */
    
    #ifdef ATM_PVCEXT
    #define ATM_PH_INERNAL  0x20    /* reserve for kernel internal use */
    #endif
    #define ATM_PH_DRIVER7  0x40    /* reserve for driver's use */
    #define ATM_PH_DRIVER8  0x80    /* reserve for driver's use */
    
    #define ATMMTU          9180    /* ATM MTU size for IP */
                                    /* XXX: could be 9188 with LLC/SNAP according
                                            to comer */
    
    /* user's ioctl hook for raw atm mode */
    #define SIOCRAWATM      _IOWR('a', 122, int)    /* set driver's raw mode */
    
    /* atm_pseudoioctl: turns on and off RX VCIs  [for internal use only!] */
    struct atm_pseudoioctl {
      struct atm_pseudohdr aph;
      void *rxhand;
    };
    #define SIOCATMENA      _IOWR('a', 123, struct atm_pseudoioctl) /* enable */
   #define SIOCATMDIS      _IOWR('a', 124, struct atm_pseudoioctl) /* disable */
   
   #ifdef ATM_PVCEXT
   
   /* structure to control PVC transmitter */
   struct pvctxreq {
       /* first entry must be compatible with struct ifreq */
       char pvc_ifname[IFNAMSIZ];          /* if name, e.g. "en0" */
       struct atm_pseudohdr pvc_aph;       /* (flags) + vpi:vci */
       struct atm_pseudohdr pvc_joint;     /* for vp shaping: another vc
                                              to share the shaper */
       int pvc_pcr;                        /* peak cell rate (shaper value) */
   };
   
   /* use ifioctl for now */
   #define SIOCSPVCTX      _IOWR('i', 95, struct pvctxreq)
   #define SIOCGPVCTX      _IOWR('i', 96, struct pvctxreq)
   #define SIOCSPVCSIF     _IOWR('i', 97, struct ifreq)
   #define SIOCGPVCSIF     _IOWR('i', 98, struct ifreq)
   
   #endif /* ATM_PVCEXT */
   
   /*
    * XXX forget all the garbage in if_llc.h and do it the easy way
    */
   
   #define ATMLLC_HDR "\252\252\3\0\0\0"
   struct atmllc {
     u_int8_t llchdr[6];   /* aa.aa.03.00.00.00 */
     u_int8_t type[2];     /* "ethernet" type */
   } __attribute__((__packed__));
   
   /* ATM_LLC macros: note type code in host byte order */
   #define ATM_LLC_TYPE(X) (((X)->type[0] << 8) | ((X)->type[1]))
   #define ATM_LLC_SETTYPE(X,V) { \
           (X)->type[0] = ((V) >> 8) & 0xff; \
           (X)->type[1] = ((V) & 0xff); \
   }
   
   #ifdef _KERNEL
   void    atm_ifattach(struct ifnet *);
   void    atm_input(struct ifnet *, struct atm_pseudohdr *,
                   struct mbuf *, void *);
   int     atm_output(struct ifnet *, struct mbuf *, struct sockaddr *,
                   struct rtentry *);
   #endif
   #ifdef ATM_PVCEXT
   #ifdef _KERNEL
   #include <sys/queue.h>
   /*
    * ATM PVC subinterface: a trick to assign a subinterface
    * to a PVC.
    * with a pvc subinterface, each PVC looks like an individual
    * Point-to-Point interface.
    * as opposed to the NBMA model, a pvc subinterface is inherently
    * multicast capable (no LANE/MARS required).
    */
   struct pvcsif {
           /*
            * The ifnet struct _must_ be at the head of this structure.
            */
           struct ifnet sif_if;            /* ifnet structure per pvc */
           struct atm_pseudohdr sif_aph;   /* flags + vpi:vci */
           int     sif_vci;                /* vci no */
           LIST_ENTRY(pvcsif) sif_links;
   };
   struct ifnet *pvcsif_alloc(void);
   #endif
   #endif /* ATM_PVCEXT */
   #endif /* !_NET_IF_ATM_H_ */

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