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Annotation of XNU/bsd/net/if_vlan_var.h, revision 1.1.1.1

1.1       root        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_ */

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