bsd/net/if_vlan_var.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright 1998 Massachusetts Institute of Technology
  24  *
  25  * Permission to use, copy, modify, and distribute this software and
  26  * its documentation for any purpose and without fee is hereby
  27  * granted, provided that both the above copyright notice and this
  28  * permission notice appear in all copies, that both the above
  29  * copyright notice and this permission notice appear in all
  30  * supporting documentation, and that the name of M.I.T. not be used
  31  * in advertising or publicity pertaining to distribution of the
  32  * software without specific, written prior permission.  M.I.T. makes
  33  * no representations about the suitability of this software for any
  34  * purpose.  It is provided "as is" without express or implied
  35  * warranty.
  36  *
  37  * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
  38  * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
  39  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  40  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
  41  * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  48  * SUCH DAMAGE.
  49  *
  50  */
  51
  52 #ifndef _NET_IF_VLAN_VAR_H_
  53 #define _NET_IF_VLAN_VAR_H_     1
  54
  55 #ifdef KERNEL
  56 struct  ifvlan {
  57         struct  arpcom ifv_ac;  /* make this an interface */
  58         struct  ifnet *ifv_p;   /* parent inteface of this vlan */
  59         struct  ifv_linkmib {
  60                 int     ifvm_parent;
  61                 u_int16_t ifvm_proto; /* encapsulation ethertype */
  62                 u_int16_t ifvm_tag; /* tag to apply on packets leaving if */
  63         }       ifv_mib;
  64 };
  65 #define ifv_if  ifv_ac.ac_if
  66 #define ifv_tag ifv_mib.ifvm_tag
  67 #endif /* KERNEL */
  68
  69 struct  ether_vlan_header {
  70         u_char  evl_dhost[ETHER_ADDR_LEN];
  71         u_char  evl_shost[ETHER_ADDR_LEN];
  72         u_int16_t evl_encap_proto;
  73         u_int16_t evl_tag;
  74         u_int16_t evl_proto;
  75 };
  76
  77 #define EVL_VLANOFTAG(tag) ((tag) & 4095)
  78 #define EVL_PRIOFTAG(tag) (((tag) >> 13) & 7)
  79 #define EVL_ENCAPLEN    4       /* length in octets of encapsulation */
  80
  81 /* When these sorts of interfaces get their own identifier... */
  82 #define IFT_8021_VLAN   IFT_PROPVIRTUAL
  83
  84 /* sysctl(3) tags, for compatibility purposes */
  85 #define VLANCTL_PROTO   1
  86 #define VLANCTL_MAX     2
  87
  88 /*
  89  * Configuration structure for SIOCSETVLAN and SIOCGETVLAN ioctls.
  90  */
  91 struct  vlanreq {
  92         char    vlr_parent[IFNAMSIZ];
  93         u_short vlr_tag;
  94 };
  95 #define SIOCSETVLAN     SIOCSIFGENERIC
  96 #define SIOCGETVLAN     SIOCGIFGENERIC
  97
  98 #ifdef KERNEL
  99 /* shared with if_ethersubr.c: */
 100 extern  u_int vlan_proto;
 101 extern  int vlan_input(struct ether_header *eh, struct mbuf *m);
 102 #endif
 103
 104 #endif /* _NET_IF_VLAN_VAR_H_ */