sys/net/if_atm.h

   1 /*      $NetBSD: if_atm.h,v 1.17 2007/12/25 18:33:44 perry Exp $       */
   2
   3 /*
   4  *
   5  * Copyright (c) 1996 Charles D. Cranor and Washington University.
   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  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Charles D. Cranor and
  19  *      Washington University.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 /*
  36  * net/if_atm.h
  37  */
  38
  39 #ifndef _NET_IF_ATM_H_
  40 #define _NET_IF_ATM_H_
  41
  42 #if (defined(__FreeBSD__) || defined(__bsdi__)) && defined(KERNEL)
  43 #ifndef _KERNEL
  44 #define _KERNEL
  45 #endif
  46 #endif /* freebsd doesn't define _KERNEL */
  47
  48 #ifndef NO_ATM_PVCEXT
  49 /*
  50  * ATM_PVCEXT enables PVC extension: VP/VC shaping
  51  * and PVC shadow interfaces.
  52  */
  53 #define ATM_PVCEXT      /* enable pvc extension */
  54 #endif
  55
  56 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
  57 #define RTALLOC1(A,B)           rtalloc1((A),(B))
  58 #elif defined(__FreeBSD__)
  59 #define RTALLOC1(A,B)           rtalloc1((A),(B),0UL)
  60 #endif
  61
  62 /*
  63  * pseudo header for packet transmission
  64  */
  65
  66 struct atm_pseudohdr {
  67   uint8_t atm_ph[4];    /* flags+VPI+VCI1(msb)+VCI2(lsb) */
  68 };
  69
  70 #define ATM_PH_FLAGS(X) ((X)->atm_ph[0])
  71 #define ATM_PH_VPI(X)   ((X)->atm_ph[1])
  72 #define ATM_PH_VCI(X)   ((((X)->atm_ph[2]) << 8) | ((X)->atm_ph[3]))
  73 #define ATM_PH_SETVCI(X,V) { \
  74         (X)->atm_ph[2] = ((V) >> 8) & 0xff; \
  75         (X)->atm_ph[3] = ((V) & 0xff); \
  76 }
  77
  78 #define ATM_PH_AAL5    0x01     /* use AAL5? (0 == aal0) */
  79 #define ATM_PH_LLCSNAP 0x02     /* use the LLC SNAP encoding (iff aal5) */
  80
  81 #ifdef ATM_PVCEXT
  82 #define ATM_PH_INERNAL  0x20    /* reserve for kernel internal use */
  83 #endif
  84 #define ATM_PH_DRIVER7  0x40    /* reserve for driver's use */
  85 #define ATM_PH_DRIVER8  0x80    /* reserve for driver's use */
  86
  87 #define ATMMTU          9180    /* ATM MTU size for IP */
  88                                 /* XXX: could be 9188 with LLC/SNAP according
  89                                         to comer */
  90
  91 /* user's ioctl hook for raw atm mode */
  92 #define SIOCRAWATM      _IOWR('a', 122, int)    /* set driver's raw mode */
  93
  94 /* atm_pseudoioctl: turns on and off RX VCIs  [for internal use only!] */
  95 struct atm_pseudoioctl {
  96   struct atm_pseudohdr aph;
  97   void *rxhand;
  98 };
  99 #define SIOCATMENA      _IOWR('a', 123, struct atm_pseudoioctl) /* enable */
 100 #define SIOCATMDIS      _IOWR('a', 124, struct atm_pseudoioctl) /* disable */
 101
 102 #ifdef ATM_PVCEXT
 103
 104 /* structure to control PVC transmitter */
 105 struct pvctxreq {
 106     /* first entry must be compatible with struct ifreq */
 107     char pvc_ifname[IFNAMSIZ];          /* if name, e.g. "en0" */
 108     struct atm_pseudohdr pvc_aph;       /* (flags) + vpi:vci */
 109     struct atm_pseudohdr pvc_joint;     /* for vp shaping: another vc
 110                                            to share the shaper */
 111     int pvc_pcr;                        /* peak cell rate (shaper value) */
 112 };
 113
 114 /* use ifioctl for now */
 115 #define SIOCSPVCTX      _IOWR('i', 95, struct pvctxreq)
 116 #define SIOCGPVCTX      _IOWR('i', 96, struct pvctxreq)
 117 #define SIOCSPVCSIF     _IOWR('i', 97, struct ifreq)
 118 #define SIOCGPVCSIF     _IOWR('i', 98, struct ifreq)
 119
 120 #endif /* ATM_PVCEXT */
 121
 122 /*
 123  * XXX forget all the garbage in if_llc.h and do it the easy way
 124  */
 125
 126 #define ATMLLC_HDR "\252\252\3\0\0\0"
 127 struct atmllc {
 128   uint8_t llchdr[6];    /* aa.aa.03.00.00.00 */
 129   uint8_t type[2];      /* "ethernet" type */
 130 } __packed;
 131
 132 /* ATM_LLC macros: note type code in host byte order */
 133 #define ATM_LLC_TYPE(X) (((X)->type[0] << 8) | ((X)->type[1]))
 134 #define ATM_LLC_SETTYPE(X,V) { \
 135         (X)->type[0] = ((V) >> 8) & 0xff; \
 136         (X)->type[1] = ((V) & 0xff); \
 137 }
 138
 139 #ifdef _KERNEL
 140 void    atm_ifattach(struct ifnet *);
 141 void    atm_input(struct ifnet *, struct atm_pseudohdr *,
 142                 struct mbuf *, void *);
 143 int     atm_output(struct ifnet *, struct mbuf *, const struct sockaddr *,
 144                 struct rtentry *);
 145 #endif
 146 #ifdef ATM_PVCEXT
 147 #ifdef _KERNEL
 148 #include <sys/queue.h>
 149 /*
 150  * ATM PVC subinterface: a trick to assign a subinterface
 151  * to a PVC.
 152  * with a pvc subinterface, each PVC looks like an individual
 153  * Point-to-Point interface.
 154  * as opposed to the NBMA model, a pvc subinterface is inherently
 155  * multicast capable (no LANE/MARS required).
 156  */
 157 struct pvcsif {
 158         /*
 159          * The ifnet struct _must_ be at the head of this structure.
 160          */
 161         struct ifnet sif_if;            /* ifnet structure per pvc */
 162         struct atm_pseudohdr sif_aph;   /* flags + vpi:vci */
 163         int     sif_vci;                /* vci no */
 164         LIST_ENTRY(pvcsif) sif_links;
 165 };
 166 struct ifnet *pvcsif_alloc(void);
 167 #endif
 168 #endif /* ATM_PVCEXT */
 169 #endif /* !_NET_IF_ATM_H_ */